Toshiba Satellite A20 Series Maintenance Manual Download Page 94

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2 Troubleshooting Procedures

2.8 Display Troubleshooting

Procedure 3

Connector and Replacement Check

The FL, FL inverter, LCD module, and system board are connected to the display circuits. Any
of these components may be damaged. Refer to Chapter 4,

Replacement Procedures,

for

instructions on how to disassemble the computer and then perform the following checks:

If the FL does not light, perform Check 1.

If characters or graphics are not displayed clearly, perform Check 2.

If some screen functions do not operate properly, perform Check 3.

If the FL remains lit when the display is closed, perform Check 4.

Check 1 Replace the FL inverter with a new one and test the display again. If the problem still

exists, perform Check 2.

HV cable

System board

PJ5600

LCD

PJ5601

FL Inverter

CN1

CN2

FL cable

Check 2 The FL cable or HV cable may be defective or damaged. Replace the FL or HV cable

with a new one and test the display again. If the problem still exists, perform Check3.

Check 3 The LCD module may be defective or damaged. Replace the LCD module with a

new one and test the display again. If the problem still exists, perform Check 4.

Check 4 The FL cable may be defective or damaged. Replace the FL cable with a new one and

test the display again. If the problem still exists, perform Check 5.

Check 5 The system board may be defective or damaged. Replace it with a new one following

the instructions in Chapter 4,

Replacement Procedure

2-44

Satellite A20 Maintenance Manual (960-444)

Summary of Contents for Satellite A20 Series

Page 1: ...Toshiba Personal Computer Satellite A20 Series Maintenance Manual TOSHIBA CORPORATION File Number 960 444 ...

Page 2: ...tains are accurate for the TOSHIBA A20 Series Portable Personal Computer at the time of this manual s production However succeeding computers and manuals are subject to change without notice TOSHIBA assumes no liability for damages incurred directly or indirectly from errors omissions or discrepancies between the computer and the manual Trademarks Intel Intel SpeedStep and Pentium are trademarks o...

Page 3: ...icates the existence of a hazard that could result in bodily injury if the safety instruction is not observed CAUTION Caution indicates the existence of a hazard that could result in property damage if the safety instruction is not observed NOTE Note contains general information that relates to your safe maintenance service Improper repair of the computer may result in safety hazards Toshiba requi...

Page 4: ...ow to diagnose and resolve FRU problems Chapter 3 Test and Diagnostics describes how to perform test and diagnostic operations for maintenance service Chapter 4 Replacement Procedures describes the removal and replacement of the FRUs Appendices The appendices describe the following Handling the LCD module Board layout Pin assignments Keyboard scan character codes Key layout Wiring diagrams BIOS Re...

Page 5: ...on the keyboard is printed in boldface type Key operation Some operations require you to simultaneously use two or more keys We identify such operations by the key top symbols separated by a plus sign For example Ctrl Pause Break means you must hold down Ctrl and at the same time press Pause Break If three keys are used hold down the first two and at the same time press the third User input Text t...

Page 6: ...vi Satellite A20 Maintenance Manual 960 444 ...

Page 7: ...28 Chapter 2 Troubleshooting Procedures 2 1 Troubleshooting 2 1 2 2 Troubleshooting Flowchart 2 3 2 3 Power Supply Troubleshooting 2 7 2 4 System Board Troubleshooting 2 19 2 5 FDD Troubleshooting 2 33 2 6 HDD Troubleshooting 2 36 2 7 Keyboard Troubleshooting 2 41 2 8 Display Troubleshooting 2 44 2 9 CD RW DVD DVD ROM DVD R RW and DVD Multi Drive Troubleshooting 2 46 2 10 Modem Troubleshooting 2 4...

Page 8: ...ard Disk Test 3 27 3 12 Real Timer Test 3 30 3 13 NDP Test 3 32 3 14 Expansion Test 3 34 3 15 CD ROM DVD ROM Test 3 36 3 16 Wireless LAN Test Agere 3 37 3 17 Wireless LAN Test Atheros 3 42 3 18 Sound LAN Modem Test 3 45 3 19 Error Code and Error Status Names 3 51 3 20 Hard Disk Test Detail Status 3 54 3 21 Head Cleaning 3 56 3 22 Log Utilities 3 57 3 23 Running Test 3 59 3 24 Floppy Disk Drive Uti...

Page 9: ... Bluetooth 4 41 4 14 Switch Board 4 43 4 15 Top Cover with Display Assembly 4 45 4 16 Touch Pad 4 48 4 17 Front Membrane ASSY 4 50 4 18 USB Board 4 52 4 19 Sound Board 4 54 4 20 RTC Battery 4 56 4 21 DC IN Jack 4 58 4 22 System Board 4 59 4 23 Sub Fan 4 61 4 24 PC Card Slot 4 63 4 25 Speakers 4 65 4 26 Touch Pad Switch 4 67 4 27 Display Mask 4 68 4 28 FL Inverter 4 70 4 29 LCD Module 4 72 4 30 Wir...

Page 10: ...CD Module A 1 Appendix B Board Layout B 1 Appendix C Pin Assignments C 1 Appendix D Keyboard Scan Character Codes D 1 Appendix E Key Layout E 1 Appendix F Wiring Diagram F 1 Appendix G BIOS Rewrite Procedures G 1 Appendix H EC KBC Rewrite Procedures H 1 Appendix I Reliability I 1 ...

Page 11: ...Chapter 1 Hardware Overview ...

Page 12: ...1 Hardware Overview 1 ii Satellite A20 Maintenance Manual 960 444 ...

Page 13: ... DVD R RW Drive 1 19 1 6 DVD Multi Drive 1 20 1 7 Keyboard 1 23 1 8 TFT Color Display 1 24 1 8 1 LCD Module 1 24 1 8 2 FL Inverter Board 1 25 1 9 Power Supply 1 26 1 10 Batteries 1 28 1 10 1 Main Battery 1 28 1 10 2 Battery LED Main Battery 1 28 1 10 3 Battery Charging Control 1 29 1 10 4 RTC battery 1 30 Satellite A20 Maintenance Manual 960 444 1 iii ...

Page 14: ...igure 1 8 Keyboard 1 23 Figure 1 9 LCD module 1 24 Tables Table 1 1 2 5 inch HDD specifications 1 14 Table 1 2 CD RW DVD drive specifications 1 17 Table 1 3 DVD R RW drive specifications 1 19 Table 1 4 DVD Multi drive specifications 1 20 Table 1 5 LCD module specifications 1 25 Table 1 6 FL inverter board specifications 1 25 Table 1 7 Power supply board output rating 1 27 Table 1 8 Battery specifi...

Page 15: ...esktop Pentium 4 Processor The processor runs at one of the following speeds 2 53GHz 1 525volts 533MHz 2 66GHz 1 525volts 533MHz 2 80GHz 1 525volts 533MHz 3 06GHz 1 525volts 533MHz The processor incorporates a 12KB L1 cache memory and 512KB L2 cache memory Memory The computer contains no on board memory Two PC2100 266MHz compatible DDR SDRAM slots are available for installation of a 128MB 256MB 51...

Page 16: ... at single speed This drive supports the following formats Photo CD CD R CD ROM CD RW CD ROM XA CD DA CD TEXT DVD Video DVD ROM DVD R DVD RW DVD RAM DVD Multi Drive A full size DVD Multi drive module lets you run either 12 cm 4 72 or 8 cm 3 15 CD DVDs without using an adaptor It reads DVD ROMs at maximum 8 speed and CD ROMs at maximum 24 speed It writes CD R at up to 16 speed CD RW at up to 8 spee...

Page 17: ...niversal Serial Bus USB The computer comes with three USB 2 0 ports that comply with Enhanced Host Controller Interface EHCI and Open Host Controller Interface OHCI The USB enables daisy chain connection of up to 127 USB equipped devices and 480Mbps serial data transfer It is designed for easy configuration by a Plug and Play operating system and provides hot insertion ejection capability Infrared...

Page 18: ...Card 16 s multifunction cards and CardBus 32 bit cards SD Card Slot The computer is equipped with an SD Card slot that can accommodate Secure Digital flash memory cards with capacities of 8MB 16MB 32MB 64MB and 256MB SD cards let the user easily transfer data from devices such as digital cameras and Personal Digital Assistants that use SD Card flash memory The cards have a high level of security a...

Page 19: ...r data reception it operates at 56 000bps and for data transmission it operates at 33 600bps For fax transmission it operates at 14 400bps The speed of data transfer and fax depends on analog telephone line conditions It has an RJ11 modem jack for connecting to a telephone line The computer is shown in figure 1 1 The system unit configuration is shown in figure 1 2 Figure 1 1 Front of the computer...

Page 20: ... PJ9500 PJ9610 Headphone PJ8800 PJ8810 PJ9999 PJ9900 PJ5600 LCD 0 Memory 2 PJ1401 PJ3260 PJ1400 PJ2010 PJ6001 Line IN MDC Network HDD ODD PC Card Keyboard PJ4100 PJ1800 PJ1820 PJ2110 PJ8770 PJ2200 PJ3510 PJ5655 USB Memory 1 PJ9513 Speaker Left PJ9512 Speaker Right DC IN 1st Battery FAN 0 RTC Battery Debug port FAN 1 Mini PCI Parallel Figure 1 2 System unit configuration 1 6 Satellite A20 Maintenan...

Page 21: ... Bus Expansion Memory 128 256 512MB 1GB Expansion Memory 128 256 512MB 1GB Slot0 Slot1 B2 5V B1 25V P3V 266MHz SMBUS BGA 352 Balls South Bridge ALi M1535 PCI South I O bridge IDE USB1 1 SM BUS AC 97 Modem Audio Super I O PIT DMAC PIC Power management BIOS ROM 4Mbit P5V RTC bq3285 R3V P5V P5V HDD Primary IDE Secondary IDE CDPLAY Cont O2Micro OZ168 S5V P2 5V P3V P5V S3V S5V Parallel Port ODD CD E5V ...

Page 22: ...e back data cache 4 way set associative Integrated L2 cache memory 512KB ECC protected cache data array 8 way set associative Integrated NDP Intel Desktop Pentium 4 Processor 2 8GHz Processor core speed 2 8GHz at 1 525V Processor bus speed 533MHz Integrated L1 cache memory 12KB instruction cache and 8KB write back data cache 4 way set associative Integrated L2 cache memory 512KB ECC protected cach...

Page 23: ...imized latency Memory Support Supports SDR DRAM PC 100 PC 133 Supports DDR up to 200 266MHz Supports symmetrical and asymmetrical SDRAM DDR addressing Supports 64 128 256 512Mbit SDRAM DDR Maximum memory size 3GB Supports 6 memory rows with per byte access on each row Supports memory shadowing x 1 1 1 1 1 1 1 back to back page hit CAS before RAS and self refresh for SDRAM Pipelined SDRAM DDR cycle...

Page 24: ...ollection Write assembly of line bursts Supports concurrent PCI bus burst transfer at zero wait states Trident CyberBlade XP Graphic Core Highly Integrated Graphics Engine Advanced CyberBlade XP Dual Pixel Quad Texture Single Pass 3D rendering engine 128 bit internal bus interface to Core logic block Supports Microsoft DirectX 7 0 8 0 with Cubic Mapping Integrated Dual channel LVDS transmitter Dig...

Page 25: ...orts up to 512 KB ROM Size Decoding PMU Features Built in PCI IDE Controller USB Interface SMBus Interface Super I O Interface Audio System Software Modem Interface 352 pin 27mm x 27mm BGA Package Card Controller YEBISU SS This gate array has the following functions and components PCI Interface PCI Rev 2 2 Chipset Interface Intel serial interrupt CardBus PC Card Controller Yenta Ver 2 2 1 slot SD ...

Page 26: ...emory 0MB Optional memory Two SO DIMM slots are available for 128 256 512MB and 1GB memory modules consisting of SDRAM chips PC2100 3 3 volts operation No parity bit Data transfer width is 64 bit 128 256 512 1024 MB selectable 128MB eight 128Mbit 8M x 16bit chips 128MB four 256Mbit 16M x 16bit chips 256MB eight 256Mbit 16M x 16bit chips 512MB eight 512Mbit 32M x 16bit chips 1GB eight 1Gbit 64M x 1...

Page 27: ...1 2 System Unit Block Diagram 1 Hardware Overview Clock Generator One ICS951104 is used This device generates the system clock Satellite A20 Maintenance Manual 960 444 1 13 ...

Page 28: ...ure 1 4 2 5 inch HDD Table 1 1 2 5 inch HDD specifications 1 3 Specifications Parameter TOSHIBA HDD2181B TOSHIBA HDD2182B TOSHIBA HDD2171B TOSHIBA HDD2183B TOSHIBA HDD2184B Storage size formatted 30 40 60 Speed RPM 4 200 5 400 4 200 5 400 Data transfer speed Mbits s 154 3 298 0 200 8 333 2 154 3 298 0 202 9 373 3 Interface transfer rate MB s 100 Storage density Kbpi 618 607 618 632 Track density K...

Page 29: ...density Kbpi 716 644 MAX 612 716 MAX Track density Kbpi 70 0 63 0 70 0 Average random seek time read ms 13 Average random seek time write ms Motor start up time ms 5 Table 1 1 2 5 inch HDD specifications 3 3 Specifications Parameter TOSHIBA HDD2188B HITACHI G8BC0000Z810 Storage size formatted 80 80 Speed RPM 4200 4200 Data transfer speed Mbits s 350 350 Interface transfer rate MB s 100 MAX Ultra D...

Page 30: ...t maximum 24 speed It writes CD R at up to 24 speed and CD RW at up to 10 speed A Mode Control button turns power to the fixed CD RW DVD ROM drive on and off so you can use the drive as a stand alone audio CD player The CD RW DVD drive is shown in figure 1 5 Specifications for the CD RW DVD drive are described in table 1 2 Figure 1 5 CD RW DVD drive 1 16 Satellite A20 Maintenance Manual 960 444 ...

Page 31: ...ion Enhanced CD CD TEXT DVD DVD ROM DVD Video DVD R General Authoring DVD RAM 4 7GB 2 6GB Table 1 2 CD RW DVD drive specifications 2 4 Specifications Item Panasonic G8CC00010410 Read CD ROM MAX 8x CAV MAX 10 800KB sec Read DVD ROM MAX 24x CAV MAX 3 600KB sec Write CD R 4x 8x CLV MAX 16x MAX 24x ZCLV Transfer rate Write CD RW 4x CLV CD ROM 130 Average access time msec DVD ROM 180 Data Buffer Capaci...

Page 32: ...D CD EXTRA CD G Audio CD only Addressing Method 2 CD DA CD Text Photo CD CD ROM Mode 1 Mode 2 CD ROM XA Mode 2 Form 1 Form 2 Enhanced CD CD EXTRA CD G Audio CD only Addressing Method 2 Table 1 2 CD RW DVD drive specifications 4 4 TOSHIBA SD R2212 Item DVD ROM mode CD ROM mode CD R CD RW Write ATAPI Burst Mbytes s 33 3 Ultra DMA mode 2 16 6 PIO Mode 4 Multi word DMA mode 2 Access time ms 1 3 Stroke...

Page 33: ...or the DVD R RW drive are described in table 1 3 Figure 1 6 DVD R RW drive Table 1 3 DVD R RW drive specifications Specifications TOSHIBA G8CC0000ZD10 Item DVD ROM CD ROM DVD RAM Write Transfer rate Kbytes s 33 3 Ultra DMA 16 7 PIO mode 4 Multiple word DMA transfer mode 2 Access time ms Average Random Access Average Full Stroke Access Average Full Stroke Access 100 95 160 95 90 160 170 120 350 Dat...

Page 34: ...ecifications for the DVD Multi drive are listed in table 1 4 Figure 1 7 DVD Multi drive Table 1 4 DVD Multi drive specifications 1 2 TEAC G8CC00013410 Item DVD ROM mode CD ROM mode CD R CD RW Write ATAPI Burst Mbytes s 33 3 Ultra DMA mode 2 16 7 PIO Mode 4 Multi word DMA mode 2 Access time ms 1 3 Stroke Access typ 130 110 Data Buffer Capacity Mbytes 2 Supported Formats CD CD DA CD ROM Mode1 Mode2 ...

Page 35: ... Ultra DMA mode 2 16 6 PIO Mode 4 Multi word DMA mode 2 Access time ms 1 3 Stroke Access typ 180 130 Data Buffer Capacity Mbytes 2 Supported Formats CD CD DA CD ROM CD R W CD R CD ROM XA except ADPCM CD I Ready Photo CD Multi session Video CD CD EXTRA CD CD TEXT DVD DVD VIDEO DVD ROM DVD R 3 9GB 4 7GB DVD RW Ver 1 1 DVD RAM CD R CD RW Satellite A20 Maintenance Manual 960 444 1 21 ...

Page 36: ......

Page 37: ...cter key and control key and in conformity with JIS The keyboard is connected to membrane connector on the system board and controlled by the keyboard controller Figure1 8 is a view of the keyboard See Appendix E about a layout of the keyboard Figure 1 8 Keyboard Satellite A20 Maintenance Manual 960 444 1 23 ...

Page 38: ...for the TFT color display uses a backlight as the light source and can display a maximum of 262 144 colors with 1 024 x 768 or 1 400 x 1 050 resolution The M1672 can control both internal and external XGA or SXGA support displays simultaneously Figure 1 9 shows a view of the LCD module and Table 1 5 lists the specifications Figure 1 9 LCD module 1 24 Satellite A20 Maintenance Manual 960 444 ...

Page 39: ...768 H Dot spacing mm 0 297 H x 0 297 V Display range mm 304 128 H x 228 096 V Table 1 5 LCD module specifications 15 0 inch SXGA TFT 3 3 Specifications Item G33C0000P110 G33C0000N110 G33C0000R110 Number of Dots 1 400 W x 1 050 H Dot spacing mm 0 2175 H x 0 2175 V Display range mm 304 5 H x 228 375 V 1 8 2 FL Inverter Board The FL inverter board supplies a high frequency current to illuminate the L...

Page 40: ... to system components load and logic circuits Controls circuit breakers in event of a power supply malfunction 3 Management of power to logic circuits Controls power to the CPU Regulates power supplied to gate arrays Controls ON OFF power 4 Status indicators DC IN LED Battery LED 5 External device interface Monitors I2 C bus connections through EC KBC on the system board Transmits the power supply...

Page 41: ...rd s uPD720101 TVXPRESS2 B3V 3 3 YES NO NO M1535 Clock Generator Memory Mini PCI P3V 3 3 NO NO NO LCD PNL P3V 3 3 NO NO NO USB Power E5V 5 0 YES NO NO M1672 PC Card s B5V 5 0 YES NO NO M1535 BIOS HDD Mini PCI Keyboard TouchPad FAN LEDs P5V 5 0 NO NO NO ODD CD E5V 5 0 YES YES NO FL inv FL P5V 5 0 NO NO NO SD card SD B3V 3 3 YES NO NO MDC MDC B3V 3 3 YES NO NO CRT DDC P5V 5 0 NO NO NO Sound SND E5V ...

Page 42: ...main power source when the AC adaptor is not attached When the main battery is fully charged it can power the computer for the following duration Power ON about 2 5 to 4 hours Normal Mode 1 10 2 Battery LED Main Battery The battery LED displays the status of the battery pack The battery LED on the computer displays the status of the main battery Orange Main battery is charging with AC Adaptor Gree...

Page 43: ...bout 3 5 hours Power on 3 5 to 12 5 hours or longer NOTE The time required for quick charge when power is on is affected by the amount of power the system is consuming Use of the fluorescent lamp and frequent disk access consumes power and lengthens the charge time If any of the following occurs the battery charge stops 1 The battery becomes fully charged 2 The AC adaptor or battery is removed 3 T...

Page 44: ...tup information in memory while the computer is turned off Table 1 10 lists the charging time and data preservation period of the RTC battery The adapter or main battery charges the RTC battery while the computer is powered on Table 1 10 RTC battery charging data preservation time Status Time Charging Time power on About 8 hours Data preservation period full charge 1 month ...

Page 45: ...Chapter 2 Troubleshooting Procedures ...

Page 46: ...2 Troubleshooting Procedures 2 ii Satellite A20 Maintenance Manual 960 444 ...

Page 47: ...Program Execution Check 2 31 Procedure 4 Replacement Check 2 32 2 5 FDD Troubleshooting 2 33 Procedure 1 FDD Head Cleaning Check 2 33 Procedure 2 Diagnostic Test Program Execution Check 2 34 Procedure 3 Connector Check and Replacement Check 2 35 2 6 HDD Troubleshooting 2 36 Procedure 1 Message Check 2 36 Procedure 2 Partition Check 2 37 Procedure 3 Format Check 2 38 Procedure 4 Diagnostic Test Pro...

Page 48: ... Procedure 2 Connector Check and Replacement Check 2 49 2 11 LAN Troubleshooting 2 50 Procedure 1 Diagnostic Test Program Execution Check 2 50 Procedure 2 Connector Check and Replacement Check 2 51 2 12 Wireless LAN Troubleshooting 2 52 Procedure 1 Transmitting Receiving Check 2 52 Procedure 2 Antennas Connection Check 2 53 Procedure 3 Antenna Check 2 54 Procedure 4 Replacement Check 2 55 2 13 Sou...

Page 49: ...ter port LED 2 22 Figure 2 3 Antenna test jig 2 54 Tables Table 2 1 Battery LED 2 7 Table 2 2 DC IN LED 2 8 Table 2 3 Printer port LED boot mode status 2 23 Table 2 4 FDD error code and status 2 34 Table 2 5 Hard disk drive error code and status 2 39 Satellite A20 Maintenance Manual 960 444 2 v ...

Page 50: ...2 Troubleshooting Procedures 2 vi Satellite A20 Maintenance Manual 960 444 ...

Page 51: ...Disk 2 Phillips screwdriver 2 mm 3 Toshiba MS DOS system disk s You must install the following onto the disk SYS COM FORMAT COM FDISK COM and FDISK EXE 4 2DD or 2HD formatted work disk for floppy disk drive testing 5 Cleaning kit for floppy disk drive troubleshooting 6 Cleaning kit for CD RW DVD DVD ROM DVD R RW and DVD Multi Drive troubleshooting 7 Printer port LED 8 Printer port wrap around conn...

Page 52: ...iting and is formatted with DirectCD media manufactured by RICOH or Mitsubishi Chemical are recommended 21 RJ11 connector checker and modular cable or RJ11 connector checker LED 22 LAN wraparound connector 23 Music CD 24 DVD that isn t a test media 2 2 Satellite A20 Maintenance Manual 960 444 ...

Page 53: ...gotten the system password perform the following procedure at the appropriate step in the flowchart in Figure 2 1 Connect the printer port wraparound board F31PRT and then turn the POWER switch on The computer will override the password function by erasing the current password Verify with the customer that Toshiba Windows XP Pro Home is installed on the hard disk Operating systems that were not pr...

Page 54: ...2 Troubleshooting Procedures 2 2 Troubleshooting Flowchart Figure 2 1 Troubleshooting flowchart 1 2 2 4 Satellite A20 Maintenance Manual 960 444 ...

Page 55: ...2 2 Troubleshooting Flowchart 2 Troubleshooting Procedures Figure 2 1 Troubleshooting flowchart 2 2 Satellite A20 Maintenance Manual 960 444 2 5 ...

Page 56: ...hooting Procedures in Section 2 5 3 If an error is detected by the hard disk test perform the HDD Troubleshooting Procedures in Section 2 6 4 If an error is detected by the keyboard test perform the Keyboard Troubleshooting Procedures in Section 2 7 5 If an error is detected by the display test perform the Display Troubleshooting Procedures in Section 2 8 6 If an error is detected by the CD ROM DV...

Page 57: ...ing LEDs indicate the power supply status Battery LED DC IN LED The power supply controller displays the power supply status through the Battery and the DC IN LEDs as listed in the tables below Table 2 1 Battery LED Battery LED Power supply status Lights orange Quick charge Lights green Battery is fully charged and AC adaptor is connected Blinks orange even intervals The battery level becomes low ...

Page 58: ...er than those above 3 When the power supply controller detects a malfunction the DC IN LED blinks and an error code is displayed To check the power supply status install a battery pack and connect an AC adaptor Check 1 If the DC IN LED blinks orange go to Procedure 2 Check 2 If the DC IN LED does not light go to Procedure 3 Check 3 If the battery LED does not light orange or green go to Procedure ...

Page 59: ...links orange The blink pattern indicates an error as shown below Start Off for 2 seconds Error code 8 bit 1 On for one second 0 On for a half second Interval between data bits Off for a half second The error code begins with the least significant digit Example Error code 12h Error codes are given in hexadecimal format Satellite A20 Maintenance Manual 960 444 2 9 ...

Page 60: ...st Battery The 1st Battery is not connected Error code begins with 0x20 Error code ends with 0x2F 3 h The 2nd Battery The 2nd Battery is not connected Error code begins with 0x30 Error code ends with 0x3F 4 h S3V output P60 Operating Power ON 5 h E5V output P61 Error code begins with 0x40 6 h E3V output P62 Error code ends with 0xEF 7 h PPV output P63 CH0 8 h EMV output P64 CH0 9 h 2R5 E2V output ...

Page 61: ...4 3A when the main battery isn t being quick charged 24h Current sensing IC is abnormal when there is no load 25h Main battery charge current is more than 0 3A when the main battery isn t being charged 2nd Battery Error code Meaning 30h Overvoltage is detected Not supported 31h Main battery charge current is over 13 2A 32h Main battery discharge current is over 0 5A when there is no load 33h Main ...

Page 62: ... voltage is over 3 96V when the computer is powered on off 61h E3V voltage is 2 81V or less when the computer is powered on 62h E3V voltage is 2 81V or less when the computer is booting up 63h E3V voltage is abnormal when the computer is suspended 64h E3V voltage is abnormal when the computer shuts down CV support 65h E3V voltage is 2 81V or less when the computer is booting up CV support PPV outp...

Page 63: ... 2R5 E2V voltage is 2 125V or less when the computer is powered on 92h 2R5 E2V voltage is 2 125V or less when the computer is booting up 93h 2R5 E2V voltage is 2 125V or more when the computer is powered off 94h 2R5 E2V voltage is 2 125V or less when the computer is suspended 1R25 B1V output Error code Meaning A0h 1R25 B1V voltage is over 1 50V when the computer is powered on off A1h 1R25 B1V volt...

Page 64: ...is 1 53V or less when the computer is suspended 2R5 E2V output Error code Meaning D0h 2R5 E2V voltage is over 3 00V when the computer is powered on off D1h 2R5 E2V voltage is 2 125V or less when the computer is powered on D2h 2R5 E2V voltage is 2 125V or less when the computer is booting up D3h 2R5 E2V voltage is 2 125V or more when the computer is powered off D4h 2R5 E2V voltage is 2 125V or less...

Page 65: ...lowing step Connect a new AC adaptor and or AC power cord if necessary If the error still exists go to Procedure 5 Check 3 In the case of error code 2Xh Make sure the battery pack is correctly installed in the computer If the battery pack is correctly installed go to the following step Replace the battery pack with a new one If the error still exists go to Procedure 5 Check 4 Any other error is oc...

Page 66: ...rd are firmly plugged into the DC IN 15 V socket AC adaptor inlet and wall outlet If these cables are connected correctly go to Check 3 Check 3 Use a multimeter to make sure that the AC adaptor output voltage is close to 15 V If the output is several percent lower than 15 V go to Check 4 If the output is close to 15 V go to Check 5 Check 4 Connect a new AC adaptor or AC power cord If the DC IN LED...

Page 67: ...attery is not installed Check 2 5 The battery s output voltage is not normal Check 3 6 The battery s temperature is not normal Check 4 7 A bad battery is installed Check 2 8 Any other problems Check 5 Check 1 Make sure the AC adaptor and AC power cord are firmly plugged into the DC IN socket and the wall outlet If these cables are connected correctly replace the AC adaptor and or AC power cord if ...

Page 68: ...aptor with a new one If the AC adaptor is still not functioning properly perform Check 2 Check 2 Use a multimeter to make sure that F5602 F5603 and F8800 fuses on the system board are not blown If a fuse s is not blown go to Check 3 If a fuse s is blown go to Check 4 Check 3 Use a multimeter to make sure that F8810 fuse on the battery board are not blown If the fuse is not blown go to Check 4 If t...

Page 69: ...ective or not functioning properly Start with Procedure 1 and continue with the other procedures as instructed The procedures described in this section are Procedure 1 Message Check Procedure 2 Printer Port LED Check on Boot Mode Procedure 3 Diagnostic Test Program Execution Check Procedure 4 Replacement Check Satellite A20 Maintenance Manual 960 444 2 19 ...

Page 70: ...the system configuration preserved in the RTC memory CMOS type memory is not the same as the actual configuration or when the data is lost If you press F1 as the message instructs the SETUP screen appears to set the system configuration If the error message b appears often when the power is turned on replace the RTC battery If any other error message displays perform Check 2 a Bad HDD type Check s...

Page 71: ...CD RW DVD ROM Troubleshooting Procedures in Section 2 9 If the error message 22 or 23 appears go to the FDD Troubleshooting Procedures in Section 2 5 1 PIT ERROR 2 MEMORY REFRESH ERROR 3 TIMER CH 2 OUT ERROR 4 CMOS CHECKSUM ERROR 5 CMOS BAD BATTERY ERROR 6 FIRST 64KB MEMORY ERROR 7 FIRST 64KB MEMORY PARITY ERROR 8 VRAM ERROR 9 SYSTEM MEMORY ERROR 10 SYSTEM MEMORY PARITY ERROR 11 EXTENDED MEMORY ER...

Page 72: ...D status from left to right as you are facing the back of the computer 4 Convert the status from binary to hexadecimal notation 5 If the final LED status is FFh normal status go to Procedure 3 6 If the final LED status matches any of the test status values in Table 2 3 perform Check 1 NOTE If an error condition is detected by the IRT test the printer port LED displays an error code after the IRT t...

Page 73: ...zation sequence Enabling keyboard B1h EC KBC rewrite check Tilde TAB key check BIOS rewrite request check when check sum error except for Boot Block is detected or rewrite is requested by user B2h BIOS rewrite check Transition to BIOS rewrite System BIOS rewrite transition to IRT System BIOS rewrite transition to IRT Hardware initialization Setting base for Power Management I O Space Enabling BIOS...

Page 74: ...ED Key input Disabling USB Sound beep Waiting for key input Reading CHGBIOSA EXE CHGFIRMA EXE FDC reset Setting parameters for 2DD 720KB setting transmission rate Reading the first sector For 2HD 1 44MB the media is defined Setting parameters for 2SS 720KB setting transmission rate Searching CHGBIOSA EXE from route directory Working out the head and sector of directory start Reading the route dire...

Page 75: ...hecksum CMOS data initialization 1 Setting of IRT status setting boot status and IRT busy flag the bit remained is zero 02h CMOS check and initialization Storing DRAM size Resume branch at Cold Boot Not resume when a CMOS error is detected Not resume when resume status code is not set Resume error check ICH Power Failure error resume error 7Ah SM RAM checksum check resume error 73h Check of change...

Page 76: ...attern set can be read PIT CH0 initialization setting timer interrupt internal to 55m s PIT CH2 initialization setting the frequency for sound generator to 55 m s PIT CH1 test Check whether the refresh signal is working properly when the refresh interval is 30m s The system halts when the time is out PIT CH2 test Check whether the speaker gate is working properly Measuring of CPU clock Enabling SM...

Page 77: ...ing VGA display to off and reset control Sound initialization Acquiring Multibox status of the computer HC initialization connection recognition and initialization of a USB device Enable Disable control of the internal LAN PIC initialization PIC test Check whether self test is necessary at Cold Boot Check of space key and printer wraparound connector 06h PCI initialization Initialization of passwo...

Page 78: ... initialization sequence SD initialization 0Ah Output code generation Output code generation 0Bh First 64KB memory check First 64KB memory check 0Ch Interrupting vector initialization Interrupting vector initialization 0Dh NDP initialization NDP initialization Storing CMOS error status in IRT error status buffer Start of timer initialization Initialization of buffer for power save EC initializatio...

Page 79: ...g IRT Waiting for the completion of KBC initialization Initialization of ATA priority Boot Loading BM BM initialization Key input check during IRT Waiting for the completion of KBC initialization Password input 1Ah Boot password Releasing BM 1Bh Extension I O ROM check Optional I O ROM check Storing the value of 40 00h for SIO save restore Setting of font address for resume password Setting repeat...

Page 80: ... used Hardware initialization Pre Boot Notifying the conditional of DVI connection to VGA BIOS Setting of the battery save mode Setting of date Waiting for the completion of Bluetooth initialization Update of DMI Wakeup factor and SM BIOS structure table Closing the configuration space for PCI device Cache control Update of parameter block A Process related to CPU Setting CPU clock to setup specif...

Page 81: ... the following sections Section 2 5 FDD Troubleshooting Section 2 6 HDD Troubleshooting Procedure 3 Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu Refer to Chapter 3 Tests and Diagnostics for more information on how to perform these tests 1 System test 2 Memory test 3 Keyboard test 4 Display test 5 Floppy Disk test 6 Printer test 7 Async test 8 Ha...

Page 82: ...d connectors may be damaged Disassemble the computer following the steps described in Chapter 4 Replacement Procedures and perform Check 1 Check 1 Visually check for the following conditions a Connector housing is cracked or broken b Connector pins are damaged If there is damage go to Check 2 If there is no damage but an error message still appears go to Check 2 Check 2 The system board may be dam...

Page 83: ...re 3 Connector Check and Replacement Check Procedure 1 FDD Head Cleaning Check FDD head cleaning is one option available in the Diagnostic Program The detailed operation is given in Chapter 3 Tests and Diagnostics Insert the Diagnostics Disk in the external floppy disk drive Then turn on the computer and run the test Clean the FDD heads using the cleaning kit If the FDD still does not function pro...

Page 84: ... while executing the FDD diagnostics test go to Check 1 Table 2 4 FDD error code and status Code Status 01h Bad command 02h Address mark not found 03h Write protected 04h Record not found 06h Media removed on dual attach card 08h DMA overrun error 09h DMA boundary error 10h CRC error 20h FDC error 40h Seek error 60h FDD not drive 80h Time out error Not ready EEh Write buffer error FFh Data compare...

Page 85: ...stem board PJ4600 USB FDD If any of the connections is loose reconnect firmly and repeat Procedure 2 If any of the connections is damaged or there is still an error go to Check 2 Check 2 The FDD or USB cable may be defective or damaged Replace it with a new one If the USB FDD is still not functioning properly perform Check 3 Check 3 Replace the system board with a new one following the steps in Ch...

Page 86: ...D does not function properly some of the following error messages may appear on the display Start with Check 1 below and perform the other checks as instructed Check 1 If any of the following messages appear go to Procedure 5 If the following messages do not appear perform Check 2 HDC ERROR After 5 seconds this message will disappear or IDE 0 ERROR After 5 seconds this message will disappear Check...

Page 87: ...ll exists go to Procedure 3 Check 3 If the drive C is listed as active in the FDISK menu go to Check 4 If the drive C is not listed as active return to the FDISK menu and choose the option to set the active partition for the drive C Restart the computer If the problem still exists go to Check 4 Check 4 Type DIR C and press Enter If the following message appears go to Procedure 3 If contents of dri...

Page 88: ...MS DOS FORMAT program To format the HDD follow the steps below Check 1 Format the HDD and transfer system files using FORMAT C S U If the following message appears on the display the HDD is formatted Format complete If an error message appears on the display go to Procedure 4 2 38 Satellite A20 Maintenance Manual 960 444 ...

Page 89: ...es and statuses are listed in Table 2 5 If an error code is not generated and the problem still exists go to Procedure 5 Table 2 5 Hard disk drive error code and status Code Status 01h Bad command 02h Bad address mark 04h Record not found 05h HDC not reset 07h Drive not initialized 08h HDC overrun DRQ 09h DMA boundary error 0Ah Bad sector error 0Bh Bad track error 10h ECC error 11h ECC recover ena...

Page 90: ... Make sure the HDD is firmly connected to PJ1800 on the system board System board PJ1800 HD DD If the connection is loose reconnect firmly and repeat Procedure 1 If there is still an error go to Check 2 Check 2 The HDD may be damaged Replace it with a new one following the instructions in Chapter 4 If the problem still exists perform Check 3 Check 3 The system board may be damaged Replace it with ...

Page 91: ...s as instructed Procedure 1 Diagnostic Test Program Execution Check Procedure 2 Connector and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Keyboard Test in the Diagnostic Program Refer to Chapter 3 Tests and Diagnostics for more information on how to perform the test program If an error occurs go to Procedure 2 If an error does not occur the keyboard is functio...

Page 92: ...ct firmly and repeat Procedure 2 If there is still an error go to Check 2 Check 2 The keyboard may be damaged Replace it with a new one following the instructions in Chapter 4 If the problem still exists perform Check 3 Check 3 Make sure the touch pad cable is firmly connected to PJ3240 on the system board Touch pad cable System board PJ3240 Touch pad If the connection is loose reconnect firmly an...

Page 93: ...tects the external monitor If the external monitor works correctly the internal LCD may be damaged Go to Procedure 3 If the external monitor appears to have the same problem as the internal monitor the system board may be damaged Go to Procedure 2 Procedure 2 Diagnostic Test Program Execution Check The Display Test program is stored on the computer s Diagnostics disk This program checks the displa...

Page 94: ...th a new one and test the display again If the problem still exists perform Check 2 HV cable System board PJ5600 LCD FL PJ5601 FL Inverter CN1 CN2 FL cable Check 2 The FL cable or HV cable may be defective or damaged Replace the FL or HV cable with a new one and test the display again If the problem still exists perform Check3 Check 3 The LCD module may be defective or damaged Replace the LCD modu...

Page 95: ...The object must be long enough to activate the eject mechanism 3 Clean the laser pickup lens with a lens cleaner Apply the cleaner to a cloth and wipe the lens 4 If the drive still does not function properly after cleaning go to Procedure 2 Procedure 2 Diagnostic Test Program Execution Check The CD ROM DVD ROM test program is stored in the Diagnostics Disk For the DVD ROM test prepare a test DVD T...

Page 96: ... sure the drive is firmly connected to PJ1820 on the system board System board PJ1820 CD RW DVD DVD ROM DVD R RW or DVD Multi Drive If the connection is loose reconnect firmly and repeat Procedure 2 If there is still an error go to Check 2 Check 2 The drive may be defective or damaged Replace the drive with a new one following the steps in Chapter 4 Replacement Procedures If the drive is still not...

Page 97: ...stic Test Program Execution Check Procedure 2 Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check The modem Diagnostic test program is stored on the computer s diagnostic disk Insert the diagnostics disk in the computer s floppy disk drive turn the computer on and run the test Refer to Chapter 3 Tests and Diagnostics for details If an error occurs while execut...

Page 98: ...1 Modem jack Sound board PJ3010 JP1 MDC System board PJ9600 PJ9601 PJ9511 PJ9510 If a connector is disconnected connect it firmly and repeat Procedure 1 If the Modem is still not functioning properly perform Check 2 Check 2 The RJ 11 jack may be defective or damaged Replace the RJ 11 jack with a new one following the steps in Chapter 4 Replacement Procedures If the modem is still not functioning p...

Page 99: ...Execution Check Procedure 2 Connector Check and Replacement Check Procedure 1 Diagnostic Test Program Execution Check The LAN Diagnostic test program is stored on the computer s diagnostic disk This program checks the LAN function Insert the diagnostics disk in the computer s floppy disk drive turn the computer on and run the test Refer to Chapter 3 Tests and Diagnostics for details If an error oc...

Page 100: ...irmly connected to PJ4100 on system board System board PJ4100 RJ 45 If a connector is disconnected connect it firmly and repeat Procedure 1 If the LAN port is still not functioning properly perform Check 2 Check 2 The RJ 45 jack may be defective or damaged Replace the RJ 45 jack with a new one following the steps in Chapter 4 Replacement Procedures If the LAN port is still not functioning properly...

Page 101: ... Antennas Capability Check Procedure 4 Replacement Check Procedure 1 Transmitting Receiving Check Make sure the wireless communication switch on the computer is turned on If it is not turn the switch on Check 1 Execute the test program for the wireless LAN function to check the transmitting receiving function of the wireless LAN You will need a second computer that can communicate by the wireless ...

Page 102: ...e following checks Check 1 The wireless LAN card and the system board may be disconnected Make sure the wireless LAN card is firmly connected to the PJ2200 on the system board If the connector is disconnected connect firmly and return to Procedure 1 If there is still an error go to Check 2 Check 2 Make sure the wireless LAN antenna cable black and white are firmly connected to the wireless LAN car...

Page 103: ...ses the test when the resistance is less than 5 ohm If it is more than 5 ohm the antenna is faulty 4 Measure the black antenna s resistance Check if there is a faulty Figure 2 3 Antenna Test jig Measurement Value Pass fail Comment Less than 5Ω Pass Include cable loss More than 5Ω Fail The digital tester shows 0L etc if there is a broken wire NOTE 1 The resistances determined with the steps above m...

Page 104: ...ble the computer following the steps described in Chapter 4 and replace the board with a new one If there is still an error go to Check 2 Check 2 The wireless LAN antenna or wireless LAN antenna cables may be defective or damaged Disassemble the computer following the steps described in Chapter 4 and replace it with a new one If there is still an error go to Check 3 Check 3 The system board may be...

Page 105: ...uired Procedure 1 Diagnostic Test Program Execution Check Procedure 2 Connector Check Procedure 3 Replacement Check Procedure 1 Diagnostic Test Program Execution Check The sound test program is stored on the computer s diagnostic disk Insert the Diagnostics disk in the external floppy disk drive Then turn on the computer and run the test Refer to Chapter 3 Tests and Diagnostics for details If an e...

Page 106: ...rrectly perform Check 1 If the external microphone or the headphone doesn t work correctly perform Check 2 Check 1 If the speakers don t sound properly the speaker cable may be disconnected Make sure the speaker cable is firmly connected to PJ9512 and PJ9513 on the system board If the stereo speakers are still not functioning properly go to Procedure 3 Check 2 If the external microphone or the hea...

Page 107: ...eo speakers still do not work properly go to Check 3 Check 2 If the external microphone or the headphone does not work correctly the cable or the sound board may be defective or damaged Replace it with a new one If the external microphone or the headphone still does not work correctly go to Check 3 Check 3 The system board may be defective or damaged Replace it with a new one Satellite A20 Mainten...

Page 108: ...rd can be read If the card is not recognized or data are not read go to Procedure 2 Procedure 2 Connector Replacement Check The SD card is connected to PJ2130 on the sound board Sound board PJ2130 SD Card System board PJ9600 PJ9601 PJ9511 PJ9510 Check 1 The SD card and the sound board may be disconnected Make sure the SD card is firmly inserted to PJ2130 on the sound board If not insert it firmly ...

Page 109: ...Chapter 3 Tests and Diagnostics ...

Page 110: ...3 Tests and Diagnostics 3 ii Satellite A20 Maintenance Manual 960 444 ...

Page 111: ...14 Expansion Test 3 34 3 15 CD ROM DVD ROM Test 3 36 3 16 Wireless LAN Test Agere 3 37 3 17 Wireless LAN Test Atheros 3 42 3 18 Sound LAN Modem Test 3 45 3 19 Error Code and Error Status Names 3 51 3 20 Hard Disk Test Detail Status 3 54 3 21 Head Cleaning 3 56 3 21 1 Function Description 3 56 3 21 2 Operations 3 56 3 22 Log Utilities 3 57 3 22 1 Function Description 3 57 3 22 2 Operations 3 57 3 2...

Page 112: ...iguration 3 66 3 25 1 Function Description 3 66 3 25 2 Operations 3 67 3 26 SETUP 3 68 3 26 1 Function Description 3 68 3 26 2 Accessing the SETUP Program 3 70 Tables Table 3 1 Subtest names 3 7 Table 3 2 Error codes and error status names 3 51 Table 3 3 Hard disk controller status register contents 3 54 Table 3 4 Error register contents 3 55 ...

Page 113: ...se connections 2 Exit any application you may be using and close Windows The DIAGNOSTIC MENU consists of the following eight functions DIAGNOSTIC TEST HEAD CLEANING LOG UTILITIES RUNNING TEST FDD UTILITIES SYSTEM CONFIGURATION EXIT TO MS DOS SETUP The DIAGNOSTIC TEST MENU contains the following twelve functional tests SYSTEM TEST MEMORY TEST KEYBOARD TEST DISPLAY TEST FLOPPY DISK TEST PRINTER TEST...

Page 114: ...CD ROM TEST DISK ZA1217P01 P000204190 CD ROM DVD ROM test A DVD test media Toshiba EMI DVD ROM TEST DISK TSD 1 CD ROM DVD ROM test CD RW media that supports four speed writing media manufactured by RICOH or Mitsubishi Chemical are recommended External CRT Display test Headphone Sound test CD ROM drive CD ROM test A microphone A modular cable and RJ11 connector checker A modular cable and RJ11 conn...

Page 115: ...d turn on the computer while pressing U The Diagnostics Disk contains the MS DOS boot files NOTE To execute the CD ROM or DVD ROM test make sure the CD ROM and CD ROM drive or DVD ROM and DVD ROM drive is installed in the computer The following menu will appear NOTE To exit the DIAGNOSTIC TEST MENU press Esc If a test program is in progress press Ctrl Break to exit the test program or press Ctrl C...

Page 116: ...ST 3 KEYBOARD TEST 4 DISPLAY TEST 5 FLOPPY DISK TEST 6 PRINTER TEST 7 ASYNC test 8 HARD DISK TEST 9 REAL TIMER TEST 10 NDP TEST 11 EXPANSION TEST 12 13 CD ROM DVD ROM TEST 14 88 ERROR RETRY COUNT SET FDD HDD 99 EXIT TO DIAGNOSTICS MENU Refer to sections 3 4 through 3 15 for detailed descriptions of each Diagnostic Tests 1 through 13 Function 88 sets the floppy disk drive and hard disk drive error ...

Page 117: ...hermister Check 03 04 CPU Fan ON OFF 05 2nd Fan ON OFF 06 Quick charge 07 DMI read 08 DMI write 09 CPU Temperature 99 Exit to DIAGNOSTIC TEST MENU NOTE The menu displayed by your computer may be slightly different from the one shown above 4 Select the desired subtest number from the subtest menu and press Enter The following message will appear TEST LOOP YES NO Selecting YES increases the pass cou...

Page 118: ...HALT OPERATION 1 Test end 2 Continue 3 Retry These three selections have the following functions respectively 1 Terminates the test program and exits to the subtest menu 2 Continues the test 3 Restarts the test from the error Selecting NO keeps the test running even if an error is found 6 Use the arrow keys to move the cursor to the desired option and press Enter Table 3 1 in section 3 3 describes...

Page 119: ...ional memory Protected mode Cache memory L2 cache memory Stress 3 KEYBOARD 01 02 04 05 08 Pressed key display Pressed key code display Touch Pad USB test CD function key test 4 DISPLAY 01 02 03 04 05 06 07 VRAM read write for VGA Gradation for VGA Gradation for LCD Gradation Mode test for VGA All dot on off for LCD H pattern display LCD Brightness 5 FLOPPY DISK 01 02 03 04 05 Sequential read Seque...

Page 120: ...l time carry 10 NDP 01 NDP test 11 EXPANSION 01 03 PCMCIA Wrap around RGB monitor ID 13 CD ROM DVD ROM 01 02 03 04 07 Sequential read Read specified address Random address data Playback music RW 1point W R C Wireless LAN Agere 1 2 3 0 Transmit Receive test Responder MAC Address test Mini PCI Wireless LAN Wireless LAN WEP64 128 test Transmit Receive test Initiator Wireless LAN Atheros 1 0 Test PC I...

Page 121: ...CPU fan operation using the on off command The following message will appear when this subtest is executed Make sure the fan does not rotate and press Enter Test CPU Fan Revolution 0000RPM Start The following message will appear Make sure the fan rotates at high speed and press Enter Test CPU Fan Revolution LEVEL 5 speed start Subtest 05 2nd Fan On Off This subtest checks 2nd fan operation using t...

Page 122: ...er Model Name is displayed Input the computer s model name and press Enter e g DynaBook Satellite 2 Enter Version Number Input the computer s version number and press Enter e g PS245U AAA13 3 Enter Serial Number Input the computer s serial number and press Enter e g Z2020855JU 4 Enter Model Number Input the computer s sales model number and press Enter e g PS245U AAA13 5 Enter Bundle Number Input ...

Page 123: ...d This number takes one of the following three values 0000h The CPU is running full speed 4000h The CPU has slowed to 75 of its maximum speed 8000h The CPU has slowed to 50 of its maximum speed The subtest displays the message five times at intervals of one minute therefore it takes five minutes to complete the test The computer passes the test if the CPU temperature is less than 70 degrees at the...

Page 124: ...40 KB then reads the new data and compares the result with the original data Subtest 02 Protected Mode NOTE The CONFIG SYS file must be configured without expanded memory manager programs such as EMM386 EXE EMM386 SYS or QEMM386 SYS Also the HIMEM SYS must be deleted from the CONFIG SYS file This subtest writes constant data and address data to extended memory maximum address 100000h then reads th...

Page 125: ...f misses Number of hits OK Number of misses Number of hits Fail Subtest 05 L2 Cache Memory To test the L2 cache memory a test similar to that for the cache memory is performed Subtest 06 Stress The conventional memory is provided with a write read buffer size 1b30 h and creates write data in the write buffer Subsequent to 1 MB the data is written in the write buffer and is read into the read buffe...

Page 126: ...Pressed Key Display NOTE The Num Lock and the Overlay mode must be off to execute this subtest When you execute this subtest the keyboard layout is drawn on the display as shown below When any key is pressed the corresponding key on the screen changes to the key that was pressed Holding a key down enables the auto repeat function which causes the key s display character to blink To exit this subte...

Page 127: ...s Lock Num Lock Scroll Lock Alt Ctrl Left Shift Right Shift PRESS Enter KEY Subtest 04 Touch Pad This Subtest checks the functions of the touch pad as shown below A Touch Pad pressure sensing direction and parameter B Touch Pad switch function check This test reports the pointing stick motion response from the touch pad and touch pad switch When the touch pad is pressed towards the upper left the ...

Page 128: ...RAMETER STATUS 0000h X RATE 0000h Y RATE 0000H BUTTON 1 2 POINTING POINTING IPS 4 Btton TEST Vx xx Subtest 05 USB Test This Subtest checks USB The USB TEST Module ZD0003P01 and USB Cable ZD0003P02 must be connected to the computer The following message will appear Select a port to test and press Enter Test port number select 1 Port0 2 Port1 3 Port2 3 16 Satellite A20 Maintenance Manual 960 444 ...

Page 129: ...you move the USB mouse The display reverses when you click the right button or left button To stop this test press the two IPS buttons on the computer connected to PJ10 at the same time You cannot use the USB mouse to stop the test Subtest 08 CD function key test When this subtest displays a message shown below press MODE button for 3 seconds to release the key lock Press MODE Control Button CAUTI...

Page 130: ...inal data Subtest 02 Gradation for VGA This subtest displays four colors red green blue and white from left to right across the screen from black to maximum brightness The display below appears on the screen when this subtest is executed To exit this subtest and return to the DISPLAY TEST menu press Enter Subtest 03 Gradation for LCD This subtest displays several horizontal bands of multiple color...

Page 131: ...ns for each mode Execute the test then press Enter to change the mode The display below appears on the screen when this subtest is executed Pressing Enter changes the size of the displayed image Mode 12 Mode 13 Pressing Enter changes the size of the displayed image Satellite A20 Maintenance Manual 960 444 3 19 ...

Page 132: ... 800 600 64K Mode 115 800 600 16M Mode 117 1024 768 64K Mode 111 640 480 64K To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break Subtest 05 All Dot On Off for LCD This subtest displays an all white screen all dots on for three seconds then an all black screen all dots off for three seconds To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break 3 20 Satellit...

Page 133: ...HHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH To exit this subtest and return to the DISPLAY TEST menu Ctrl Break...

Page 134: ... 00 79 2 The Floppy Disk test contains five subtests that test the FDD The floppy disk test menu will appear after you select FDD test parameters SUB TEST MENU 01 Sequential read 02 Sequential read write 03 Random address data 04 Write specified address 05 Read specified address 99 Exit to DIAGNOSTIC TEST MENU Select the number of the subtest you want to execute and press Enter The following messa...

Page 135: ...rack 0 to 39 0 to 79 on a floppy disk The data is then read and compared to the original data Subtest 03 Random address data This subtest writes random data to random addresses on all tracks track 0 to 39 0 to 79 on a floppy disk The data is then read and compared to the original data Subtest 04 Write specified address This subtest writes the data specified by an operator to a place pointed by tra...

Page 136: ...NOTE A Port Replicator and an IBM compatible printer must be connected to the system to execute this test The following message will appear when the printer test is selected channel 1 XXXXh channel 2 XXXXh channel 3 XXXXh Select the channel number 1 3 The printer I O port address is specified by the XXXXh number The computer supports three printer channels Select the printer channel number and pre...

Page 137: ...prints the various print types shown below Subtest 03 Wrap around NOTE To execute this subtest a printer wraparound connector must be connected to the printer port in the Port Replicator The printer wraparound connector 34M741986G01 wiring diagram is described in Appendix F This subtest checks the output and bi directional modes of the data control and status lines through the parallel port wrapar...

Page 138: ...00BPS Subtests 06 07 Data 8 bits and one parity bit EVEN Data pattern 20h to 7Eh Subtest 06 FIR SIR Point to Point send NOTE To execute subtests 06 and 07 each computer must have access to the other computer s infrared port This subtest sends 20h through 7Eh data to the receive side then receives the sent data and compares it to the original data through the FIR SIR port Subtest 07 FIR SIR Point t...

Page 139: ...ools folder to back up the entire disk including the user s files Refer to the operating system instructions After selecting the hard disk test from the DIAGNOSTIC TEST MENU answer each of the questions with an appropriate response to execute the test 1 Select the hard disk drive number to be tested Test drive number select 1 HDD 1 2 HDD 2 0 HDD1 2 2 This message is used to select the retry operat...

Page 140: ... a sequential reading of all the tracks on the HDD starting at track 0 When all the tracks on the HDD have been read the test starts at the maximum track and reads the tracks on the HDD sequentially back to track 0 Subtest 02 Address Uniqueness This subtest writes unique address data to each sector of the HDD track by track The data written to each sector is then read and compared with the origina...

Page 141: ...er D24924 7 cylinder Subtest 06 Write Specified Address This subtest writes specified data to a specified cylinder and head on the HDD Subtest 07 Read Specified Address This subtest reads data that has been written to a specified cylinder and head on the HDD Subtest 09 Sequential Write This subtest writes specified 2 byte data to all of the cylinders on the HDD Subtest 10 W R C Specified Address T...

Page 142: ...ime XX XX XX Enter new date PRESS ENTER KEY TO EXIT TEST 2 If the current date is not correct input the correct date at the Enter new date prompt and press Enter To enter press Shift The date is updated and the following prompt will appear Enter new time 3 If the current time is not correct input the correct time in 24 hour format and press Enter The time is updated Subtest 02 Backup Memory This S...

Page 143: ...Subtest the current date and time are erased This Subtest checks the real time clock increments making sure the date and time are displayed in the following format Current date 12 31 2001 Current time 23 59 58 PRESS Enter KEY TO EXIT TEST Press Enter to exit Satellite A20 Maintenance Manual 960 444 3 31 ...

Page 144: ...ss Enter and follow the directions on the screen The NDP test contains one Subtest that tests the computer s NDP functions Subtest 01 NDP This test checks the following functions of the coprocessor Control word Status word Bus Addition Multiplication Press Ctrl Break to exit 3 32 Satellite A20 Maintenance Manual 960 444 ...

Page 145: ... PC card slot Address line REG CE 1 CE 2 line Data line Speaker line Wait line BSY BVD1 line This subtest is executed in the following order Sub Address Good Bad Contents 01 00001 00001 nn nn xx xx Address line REG CE 1 CE 2 nn A0 90 80 00 02 00002 ww rr Data line ww write data rr read data 03 00003 Speaker line 04 00004 40 80 xx Wait line 40 xx 80 05 00005 nn xx Other lines BSY BVD1 NN 21 00 NOTE...

Page 146: ...ion Test 3 Tests and Diagnostics Subtest 03 RGB monitor ID For this test the computer must be in CRT mode Connect the CRT an RGB monitor with the external monitor port Satellite A20 Maintenance Manual 960 444 3 35 ...

Page 147: ...s Subtest reads one block data from a specified address Subtest 03 Random Address Data This Subtest reads one block data and multi block data from random addresses 200 times Subtest 04 Playback Music CD only NOTE You cannot use the Toshiba EMI DVD ROM TEST DISK TSD 1 for Subtest 04 For this test use an ordinary music CD This Subtest reads track data from a specified track and plays the sound Subte...

Page 148: ...puter is turned on The Wireless Communication LED lights orange Release the write protection of the floppy disk for the test Insert a floppy disk containing the test program into the target machine and turn on the target machine The Wireless LAN test menu will appear Wireless LAN sub system repair test VX XX 1 Transmit Receive test Responder 2 MAC Address test Mini PCI Wireless LAN 3 Wireless LAN ...

Page 149: ...XXXXXXXX Ad hoc mode SS ID PHN Test Channel 10 Tx ratio 2 Mbps To prepare the tester machine for the Wireless LAN test program insert a floppy disk containing the test program into the tester machine and turn on the tester machine The Wireless LAN test menu will appear Press 0 to select the test and press Enter in the initiator machine The following message will appear Wireless LAN sub system repa...

Page 150: ...he test program into the tester machine and turn on the tester machine The Wireless LAN test menu will appear Press 1 to select the test and press Enter The following message will appear Wireless LAN sub system repair test VX XX 1 Transmit Receive test Responder 2 MAC Address test Mini PCI Wireless LAN 3 Wireless LAN WEP64 128 test 0 Transmit Receive test Initiator Press test number 1 2 0 1 RESPON...

Page 151: ...st 0 Transmit Receive test Initiator Press test number 1 2 0 1 RESPONDER SET ORiWL EXE Rev 03 Copyright c Toshiba Corporation 2000 2001 Initializing Responder Mode MAC address XXXXXXXXXXXX Ad hoc mode SS ID PHN Test Channel 10 Tx ratio 2 Mbps When the machine has passed the test OK message will appear in the target machine Then press Enter in the test machine the OK message will appear also in the...

Page 152: ...ss If there is no problem the OK message will appear Subtest 03 Wireless LAN WEP64 128 test This subtest reads the WEP of the wireless LAN card installed in the target machine A message similar to the following will appear This CARD is WEP Press any key to continue Satellite A20 Maintenance Manual 960 444 3 41 ...

Page 153: ...nna 5 Communication test 802 11b Responder side 1 Communication test 802 11b This program conducts the above test items continuously and displays results for each item during the test However only the last result for the whole test shall be checked The message OK or NG is displayed When an NG item is detected during the test the message NG is displayed on the screen and the test stops Note This pr...

Page 154: ... 3 seconds Waiting for transmitter to ring the bell in 11a mode Input or output error EIO rxDatBegin nothing receive within 3000millisecs waitTime The responder machine is ready for the test Setting the tester machine Note Release the write protection of the floppy disk for the test Insert a floppy disk containing the test program into the FDD of the tester machine and turn on the tester machine T...

Page 155: ...ster machine Press Enter to return to the main menu When the tester machine has not passed the test NG message will appear in the tester machine Pressing Enter on the screen shows the following message 8 02 11a Tx Test AUX Antenna NG Then the test returns to the main menu automatically 3 44 Satellite A20 Maintenance Manual 960 444 ...

Page 156: ... ears Toshiba MS DOS is required to run the DIAGNOSTICS TEST PROGRAM To start the DIAGNOSTIC TEST PROGRAM follow these steps a Insert the test program disk in the floppy disk drive and turn on the computer The Diagnostics Disk contains the MS DOS boot files The following menu will appear Satellite 2450 DIAGNOSTICS PROGRAM SOUND LAN MODEM TEST 1 Microphoned Recording play 2 DOREMI 3 LAN 4 MODEM 5 U...

Page 157: ...boratories Inc All Rights Reserved Record Parameters Wave Channel Index 31 d Wave File Name Record wav Recording Length 3 d sec PCM Sample Rate 11000 d PCM Sample Size 8 d PCM Tone Type 2 d Record Input Mic In SPDIF In Option 0 d Play Volume Gain 11 d Record Volume Gain 15 d When SPDIF is On Options Listed Below Will Be Ignored Play Volume Gain Record Volume Gain Recording Press s to Stop ALi Audi...

Page 158: ... and turn the computer off Subtest 02 DOREMI The subtest is executed the following message appears Copyright C 2000 Acer Laboratories Inc All Rights Reserved Playback Parameters Wave File Name doremi wav Wave Channel Index 1 d SPDIF On Off Option 0 d Play Wave Volume Gain 11 d When SPDIF is On Options Listed Below Will Be Ignored Sound Track Option Play Wave Volume Gain Playing Press s to Stop Whe...

Page 159: ...t 00000 XXXX XXXXX LAN TEST Vol X XX 100Mbps Auto negotiation TxRx Test Destination Address xxxxxxxxxxxx Source Address xxxxxxxxxxxx 100Base TX Full Duplex TRANSMIT RECEIVE NOTE The menu displayed by your computer may be slightly different from the one shown above b Check that the message OK appears c Press Enter to return to Main Menu 3 48 Satellite A20 Maintenance Manual 960 444 ...

Page 160: ... message will appear Press Key Y OK N NG If you hear the modem sound from the speakers press Y Otherwise press N NOTE The menu displayed by your computer may be slightly different from the one shown above c After you press Y or N the RJ11 Connection Check LED Operator s Check LED test will execute and the following message will appear Press Key Y OK N NG If the color in the LED of the connection c...

Page 161: ...oration 2001 2002 All rights reserved Read PCI Configuration OK HC Initialize OK Work Area Memory Initialize OK OHCI0 Interrupt test OK EHCI Interrupt test OK PME status check OK To execute a subtest continuously select the test number and press Enter To exit the Sound LAN Modem test remove the test program disk from the USB FDD and turn the computer off 3 50 Satellite A20 Maintenance Manual 960 4...

Page 162: ...nding Error For 2nd Battery Thormistor error 1 Thormistor error 2 Thormistor error 3 Memory 01 02 0D RAM Parity Error Protected Mode Not Changed Cache Memory Error USB EE FE FD F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA EF ED USB NO DESCR ERROR USB GET DESCR ERROR FIRST USB SET ADDRESS ERROR HUB GET DESCR ERROR Top 8B HUB GET DESCR ERROR Whole HUB SET CONFIGURATION ERROR HUB GET DESCR ERROR DESCR HUB SET FE...

Page 163: ...t Line Out Of Paper Power Off Busy Line ASYNC 01 02 04 08 10 20 40 80 88 DSR Off Time Out CTS Off Time Out RX Empty Time Out TX BUFFER Full Time Out Parity Error Framing Error Overrun Error Line Status Error Modem Status Error HDD 01 02 04 05 07 08 09 0A 0B 10 11 20 40 80 AA BB CC E0 EE DA Bad Command Error Address Mark Not Found Record Not Found HDC Not Reset Error Drive Not Initialized HDC Overr...

Page 164: ... Error WAIT Line Error BSY Line Error BVD1 Line Error ZV Port Error No PCMCIA Card Type Error ZV_CONT Error CD DVD ROM 01 02 03 04 05 06 09 11 20 40 80 90 BO Bad Command Illegal Length Unit Attention Media Change Request Media Detected Additional Sense Boundary Error Corrected Data Error Drive Not Ready Seek Error Time Out Reset Error Address Error Keyboard 01 02 03 04 05 06 Mouse Interface Error ...

Page 165: ... HDC status register and error register are listed in Tables 3 3 and 3 4 Table 3 3 Hard disk controller status register contents Bit Name Description 7 BSY Busy 0 HDC is ready 1 HDC is busy 6 DRDY Drive ready 0 Hard disk drive is not ready to accept any command 1 Hard disk drive is ready 5 DWF Drive write fault 0 DWF error is not detected 1 Write fault condition occurred 4 DSC Drive seek complete ...

Page 166: ...rror 1 Uncorrectable data error has been detected 5 Not used 4 IDNF Identification 0 Not used 1 There was no ID field in the requested sector 3 Not used 2 ABRT Abort 0 Not used 1 Illegal command error or a drive status error occurred 1 TK00 Track 0 0 The hard disk found track 0 during a recalibrate command 1 The hard disk could not find track 0 during a recalibrate command 0 Not used Satellite A20...

Page 167: ...rom the DIAGNOSTIC MENU and pressing Enter displays the following messages DIAGNOSTICS FLOPPY DISK HEAD CLEANING VX XX Mount cleaning disk s on drive s Press any key when ready 2 Remove the Diagnostics Disk from the FDD then insert the cleaning disk and press Enter 3 When the following message appears the FDD head cleaning has begun cleaning start 4 The display automatically returns to the DIAGNOS...

Page 168: ...DD or memory address ADDR 7 Write data WD 8 Read data RD 9 HDC status HSTS 10 Error status name ERROR STATUS NAME 3 22 2 Operations Selecting 5 and pressing Enter in the DIAGNOSTIC MENU logs error information into RAM or onto a floppy disk The error information is displayed in the following format XXXXX ERRORS CNT TS NO PASS STS ADDR WD RD HSTS ERROR STATUS NAME 001 FDD 02 0000 103 00001 00 00 000...

Page 169: ...vious page 3 returns to the Diagnostic Menu 4 erases all error log information in RAM 5 outputs the error log information to a printer 6 reads the log information from a floppy disk 7 writes the log information to a floppy disk 3 In the case of error retry OK a capital R will be placed at the beginning of the error status However it is not added to the error count 3 58 Satellite A20 Maintenance Ma...

Page 170: ... error will be generated during the FDD testing 1 Remove the diagnostics disk from the floppy disk drive and insert the work disk 2 Select 6 from the Diagnostic Menu and press Enter the following message displays Printer wrap around test Y N Selecting Y yes executes the printer wraparound test A printer wraparound connector must be connected to the parallel port of the computer to properly execute...

Page 171: ...The following message will appear Mount the work disk s on the drive s then press Enter key Warning The contents of the disk s will be destroyed 5 This program is executed continuously To terminate the program press Ctrl Break 3 60 Satellite A20 Maintenance Manual 960 444 ...

Page 172: ... inch floppy disk in the following formats a 2DD Double sided double density double track 96 135 TPI MFM mode 512 bytes 9 sectors track b 2HD Double sided high density double track 96 135 TPI MFM mode 512 bytes 18 sectors track 2 COPY This program copies data from a source floppy disk to a target floppy disk 3 DUMP This program displays the contents of the floppy disk and the designated sectors of...

Page 173: ... drive type number and press Enter A message similar to the one below will be displayed Warning Disk data will be destroyed Insert work disk into drive A Press any key when ready d Remove the Diagnostics Disk from the FDD insert the work disk and press any key The following message will be displayed when the FDD format is executed FDD TYPE TRACK XXX FDD TYPE HEAD X FDD TYPE SECTOR XX Format start ...

Page 174: ... program has started FD TYPE TRACK XXX FD TYPE HEAD X FD TYPE SECTOR XX Copy start track head XXX X d Remove the source disk from the FDD insert a formatted work disk and press any key The track head XXX X message will appear and start copying to the target disk When the amount of data is too large to be copied in one operation the message from step b displays again After the floppy disk has been ...

Page 175: ...ny key and the following message will appear Max address Track XXXX Head XX Sector XX Track number f Set the track number head number and sector number you want to dump The system will access the disk and dump a list and the following message appears Select 3 to end the list display Press number key 1 up 2 down 3 end g When HDD is selected in step a the following message appears Select drive numbe...

Page 176: ...rs XXXX XXXX Removable Cylinders XXXX XXXX No of Heads XXXX XXXX Unformat Bytes Track XXXX XXXX Unformat Bytes Sector XXXX XXXX Sectors Track XXXX XXXX Gap Length XXXX XXXX Sync Bytes XXXX XXXX Reserved h XXXX Serial No YYY Controller Type h XXXX Sector Buffers XXXX XXXX ECC Bytes XXXX XXXX Firmware Rev YYYYYY Model No YYYY Reserved h XXXX Double Word Capability XXXX XXXX Press Enter key Press Ent...

Page 177: ... MS DOS Version 4 BIOS ROM version 1st ID 2nd ID 5 Boot ROM version 6 KBC version 7 PS Microprocessor Version 8 Total Memory Size 9 Battery code 10 Sound System 11 The number of printer ports 12 The number of ASYNC ports 13 The number of math co processors 14 The number of PCMCIA Slots 15 Modem Type 16 LAN Type 17 The number of floppy disk drives 18 The number of hard disk drives 19 Date Time 3 66...

Page 178: ... XX KBC Version VX XX PS Micom Version VX XX EC Version VX XX Total Memory Size XXXXXMB Conventional Memory XXXXX KB Battery Code XXXXXMB Sound System XXXXX X Printer Adapter LPT1 XXXX LPT2 XXXX LPT3 XXXX X ASYNC Adapter COM1 XXXX COM2 XXXX COM3 XXXX X Math Co Processor X PCMCIA Slot Modem XX LAN XX X Floppy Disk Drive s Track XX Head XX Sector XX X Hard Disk Drive s 1 Sectors XXXXX XX GB 2 Sector...

Page 179: ...pheral a Internal Pointing Device b Parallel Port Mode c Hard Disk Mode 5 Display a Power On Display b LCD Display Stretch c TV Type 6 Boot Priority a Boot Priority b HDD Priority c Network Boot Protocol 7 Others a Power up Mode b CPU Cache c Level 2 Cache d Auto Power On e Panel Power On Off 8 Configuration a Device Config 9 I O Ports a Parallel 10 PCI Bus a PCI Bus 3 68 Satellite A20 Maintenance...

Page 180: ...tics 11 Legacy Emulation a USB keyboard Mouse Legacy Emulation b USB FDD Legacy Emulation 12 PC Card a Controller Mode 13 Drives I O a Built in HDD b Select Bay 14 PCI LAN a Built in LAN Satellite A20 Maintenance Manual 960 444 3 69 ...

Page 181: ...che Enabled Level 2 Cache Enabled Auto Power On Disabled Select items Space BkSp Change values PgDn PgUp Change pages Esc Exit without saving Home Set default values End Save changes and Exit SYSTEM SETUP 2 2 ACPI BIOS version x xx CONFIGURATION PC CARD Device Config Setup by OS Controller Mode Auto Selected I O PORTS PERIPHERAL Parallel LPT1 378H IRQ7 CH3 Internal Pointing Device Enabled Parallel...

Page 182: ... is in Resume mode 2 The USB FDD Legacy Emulation item appears under the LEGACY EMULATION item only when Floppy Disk I O is set to Disabled 3 The LCD Display Stretch item appears under the Display item only when the LCD screen resolution is XGA 1024 768 LCD Satellite A20 Maintenance Manual 960 444 3 71 ...

Page 183: ...use the system to reboot 2 To make other changes press N Repeat the steps above 3 To accept the changes press Y NOTE You can press Esc to quit at any time without saving changes SETUP asks you to confirm that you do not want to save your changes toward User The Factory Preset Configuration When you access SETUP the current configuration is displayed 1 To show the factory preset configuration press...

Page 184: ...t the user password for power on Not Registered Change or remove the password Default For details on setting the user password refer to the User s Manual 3 Battery This option is used to select the battery setting a Battery Save Options The following set of options can be selected in the submenu Processing Speed This feature changes the CPU processing speed High CPU operates at high speed Default ...

Page 185: ...r to the hard disk drive if it is not used for the duration set The duration xx can be set to 1 3 5 10 15 20 or 30 minutes LCD Brightness Use this option to set the level of LCD brightness Super Bright Full brightness for maximum visibility Bright Full brightness for high visibility Semi Bright Less than full brightness for saving power Cooling Method If the CPU becomes too hot the fan turns on or...

Page 186: ...CP For most printers the port should be set to ECP Default Std Bi Direct This setting should be used with some other parallel devices c Hard Disk Mode Use this item to select the hard disk mode Enhanced IDE Select this mode when using an operating system that Normal supports Enhanced IDE Default Standard IDE Select this mode when using an operating system that does not support Enhanced IDE NOTE Fo...

Page 187: ...ter in Resume mode the last configuration is remembered If data does not appear on the display you are using after starting in Resume mode pressing Fn F5 Pressing Fn F5 changes the display setting in the order of internal LCD to simultaneous to external monitor b LCD Display Stretch LCD Display Stretch enables or disables a larger display area of the screen Enabled Enables the LCD display stretch ...

Page 188: ...oks for bootable files in the following order HDD CD ROM LAN and FDD FDD CD ROM LAN HDD The computer looks for bootable files in the following order FDD CD ROM LAN and HDD CD ROM LAN HDD FDD The computer looks for bootable files in the following order CD ROM LAN HDD and FDD CD ROM LAN FDD HDD The computer looks for bootable files in the following order CD ROM LAN FDD and HDD NOTE CD ROM refers to ...

Page 189: ... Enabled Enables the CPU cache Default Disabled Disables the CPU cache When enabled is selected a subwindow similar to the one below is displayed to select the cache write policy The options for this setting are Write back default and Write through for CPU cache Write policy Write back OPTION Write back policy provides better system performance because main memory is accessed only when necessary t...

Page 190: ...he same time when you use this feature If you do so data saved by the resume function will be lost You must also reset this option 2 If you have set a password and the computer boots by the Auto Power On function and Resume is on the computer will start with the instant security function enabled The password message is not displayed however you must enter the password to use the computer e Panel P...

Page 191: ...If you are using an OS that does not have PNP capacity select All Devices The Display shows the following message Device Config All Devices 10 I O ports This option controls settings for the parallel port NOTE Do not assign the same interrupt request level and I O address to the serial port and PC card a Parallel This option sets the interrupt request level IRQ and I O port base address for the pa...

Page 192: ...t LPT 2 5 278H 3 LPT 3 7 3BCH 3 Not Used Disables the port When you select one of the above options except for Not Used a subwindow similar to the one below appears to let you set the DMA The options for this setting are Channel 1and Channel 3 Default DMA Channel 3 Default OPTIONS For most printers the port should be set to ECP With some other parallel devices the setting should be Std Bi Direct S...

Page 193: ...cy Emulation Enabled USB Legacy Support can be used Default Disabled USB Legacy Support cannot be used 13 PC Card This option sets the PC Card Controller mode This option can be changed when Device Config is set to All Devices Auto Selected Use this setting for all PC Cards when OS supports Plug Play Default PCI Compatible Use this setting for PCIC compatible PC card CardBus 16 bit Use this settin...

Page 194: ...ub window below is displayed Built in HDD Primary IDE 1F0H IRQ14 ATA Card Others 190H IRQ DRIVES I O 15 PCI LAN Not used This option enables disables the Built in LAN functions a Built in LAN Enabled Enables Built in LAN functions Default Disabled Disables Built in LAN functions Satellite A20 Maintenance Manual 960 444 3 83 ...

Page 195: ...3 Tests and Diagnostics 3 26 SETUP 3 84 Satellite A20 Maintenance Manual 960 444 ...

Page 196: ...Chapter 4 Replacement Procedures ...

Page 197: ...4 Replacement Procedures 4 ii Satellite A20 Maintenance Manual 960 444 ...

Page 198: ...uetooth 4 40 4 14 Top Cover with Display Assembly 4 42 4 15 Touch Pad 4 45 4 16 Front Membrane ASSY 4 47 4 17 FIR Board 4 49 4 18 Sound Board 4 51 4 19 RTC Battery 4 53 4 20 DC IN Jack 4 55 4 21 System Board 4 56 4 22 Sub Fan 4 58 4 23 PC Card Slot 4 60 4 24 Speakers 4 62 4 25 Touch Pad Switch 4 64 4 26 Display Mask 4 65 4 27 FL Inverter 4 67 4 28 LCD Module 4 69 4 29 Wireless LAN Antenna Bluetoot...

Page 199: ...4 30 10 Replacing the 14 1 inch XGA Samsung Fluorescent Lamp 4 199 4 30 11 Replacing the 14 1 inch XGA L G Philips Fluorescent Lamp 4 208 Figures Figure 4 1 Removing the Battery cover 4 8 Figure 4 2 Removing a PC card 4 10 Figure 4 3 Removing an SD card 4 12 Figure 4 4 Removing the HDD cover 4 13 Figure 4 5 Removing the HDD pack 4 14 Figure 4 6 Removing the HDD bracket 4 15 Figure 4 7 Removing the...

Page 200: ... 4 32 Removing the Sub Fan 4 58 Figure 4 33 Removing the PC card slot 4 60 Figure 4 34 Removing the Speakers 4 62 Figure 4 35 Removing the Side cover 4 63 Figure 4 36 Removing the Touch pad switch 4 64 Figure 4 37 Removing the Display mask 1 4 65 Figure 4 38 Removing the Display mask 2 4 66 Figure 4 39 Removing the FL inverter 4 67 Figure 4 40 Removing the LCD module 1 4 70 Figure 4 41 Removing th...

Page 201: ...4 Replacing Samsung fluorescent lamp XGA 7 4 100 Figure 4 65 Replacing Samsung fluorescent lamp XGA 8 4 101 Figure 4 66 Replacing Samsung fluorescent lamp XGA 9 4 102 Figure 4 67 Replacing Sharp fluorescent lamp XGA 1 4 104 Figure 4 68 Replacing Sharp fluorescent lamp XGA 2 4 105 Figure 4 69 Replacing Sharp fluorescent lamp XGA 3 4 106 Figure 4 70 Replacing Sharp fluorescent lamp XGA 4 4 107 Figur...

Page 202: ... Figure 4 97 Replacing LG Philips fluorescent lamp SXGA 2 4 136 Figure 4 98 Replacing LG Philips fluorescent lamp SXGA 3 4 137 Figure 4 99 Replacing LG Philips fluorescent lamp SXGA 4 4 139 Figure 4 100 Replacing LG Philips fluorescent lamp SXGA 5 4 141 Figure 4 101 Replacing LG Philips fluorescent lamp SXGA 6 4 142 Figure 4 102 Replacing LG Philips fluorescent lamp SXGA 7 4 143 Figure 4 103 Repla...

Page 203: ...g Sharp fluorescent lamp SXGA 16 4 170 Figure 4 129 Replacing Sharp fluorescent lamp SXGA 17 4 171 Figure 4 130 Replacing Sharp fluorescent lamp SXGA 18 4 172 Figure 4 131 Replacing Sharp fluorescent lamp SXGA 19 4 173 Figure 4 132 Replacing Sharp fluorescent lamp SXGA 20 4 174 Figure 4 133 Replacing Sharp fluorescent lamp SXGA 21 4 175 Figure 4 134 Replacing Sharp fluorescent lamp SXGA 22 4 176 F...

Page 204: ...the power supply board 4 200 Figure 4 162 Releasing the 18 hooks 4 201 Figure 4 163 Removing the panel assembly 4 202 Figure 4 164 Removing the panel assembly 4 203 Figure 4 165 Removing the screws for fixing the FL tube back cover 4 204 Figure 4 166 Disconnecting the FL tube ground wire 4 205 Figure 4 167 Removing the FL tube 4 206 Figure 4 168 Removing the outside tape cover tape 4 209 Figure 4 ...

Page 205: ...4 Replacement Procedures 4 x Satellite A20 Maintenance Manual 960 444 ...

Page 206: ...1 DC IN Jack to remove the System Board 4 2 Battery 4 3 PC Card 4 4 SD Card 4 7 Select Bay module 4 5 HDD 4 6 MDC 4 8 Cooling Fan 4 9 CPU 4 10 Keyboard 4 11 Memory 4 12 Wireless LAN 4 13 Bluetooth 4 14 Top Cover with Display Assembly 4 15 Touch Pad 4 16 Front Membrane ASSY 4 17 USB Board 4 18 Sound Board 4 19 RTC Battery 4 20 DC IN Jack 4 25 Touch Pad Switch 4 26 Display Mask 4 27 FL Inverter 4 28...

Page 207: ...ewelry or accessories such as necklaces bracelets or rings in order to reduce the risk of electric shock Never work with wet or damp hands 3 Be careful of edges and corners as these may cut CAUTION 1 When you change a component be sure the replacement component meets the required specifications Never use foreign parts to avoid any risk of damage to the computer 2 To avoid any risk of short circuit...

Page 208: ...manual 5 Do not perform any operations that are not necessary and use only the described procedures for disassembling and installing FRUs in the computer 6 After removing parts from the computer place them in a safe place away from the computer so they will not be damaged and will not interfere with your work 7 You will remove and replace many screws when you disassemble the computer When you remo...

Page 209: ...connectors can be connected and disconnected by simply pulling them apart or pushing them together Assembly Procedures After you have disassembled the computer and fixed or repaired the problem that was causing the computer to operate abnormally you will need to reassemble the computer Install all the removed FRUs following the steps described in the corresponding sections in this chapter While as...

Page 210: ...ent is necessary to disassemble and reassemble the computer One M2 point size 0 Phillips screwdriver to remove and replace screws One 4 mm flat blade screwdriver Tweezers to lift out screws that you cannot grasp with your fingers ESD mats for the floor and the table you are working on An ESD wrist strap or heel grounder Anti static carpeting or flooring Air ionizers in highly static sensitive area...

Page 211: ...ome loose NOTE Toshiba recommends that you use an electric screw driver for quick and easy operations M2 0 17 N m 1 7 kgf cm M2 5 0 30 N m 3 0 kgf cm M3 0 57 N m 5 6 kgf cm M2 4 LH STICK 0 167 N m 1 7 kgf cm NOTE The computer contains several flat head screws These screws have less contact area with the screwdriver so be careful to press firmly enough to prevent the screwdriver from slipping out a...

Page 212: ...of Screws on the Computer Body To make maintenance of the computer easier markings of the kinds of the screws including the types and lengths of the screws are indicated on the computer body Kind of screws Symbol BIND screw B FLAT HEAD screw F SUPER FLAT HEAD screw S TAPPING screw T Other screws U Unique screws STUD etc Examples 6 mm BIND screw B6 12 mm BIND screw B12 5 mm FLAT HEAD screw F5 Indic...

Page 213: ...he battery pack 1 Turn off the computer 2 Disconnect the AC cable and other external devices from the computer 3 Turn the computer face down 4 Unlock the battery lock 5 While sliding the battery latch insert your finger into the slot then pull the battery pack to the back side of the computer and lift it out NOTE For environmental reasons do not throw away a spent battery pack Please return the sp...

Page 214: ...ndled or disposed of Dispose of the battery as required by local ordinances or regulations Use only batteries recommended by Toshiba as replacements NOTE Check the battery s terminals visually If they are dirty wipe them clean with a dry cloth 1 Seat the battery pack in the computer and carefully push it toward the connectors 2 Make sure the battery pack is installed securely 3 Lock the battery lo...

Page 215: ...o the card s documentation and to your operating system documentation for proper procedures and precautions 1 Turn the computer face up 2 Press the eject button for the PC card you want to remove to extend the button 3 Press the extended eject button to pop the PC card out slightly 4 Grasp the PC card and pull it out PC card Eject button Figure 4 2 Removing a PC card 4 10 Satellite A20 Maintenance...

Page 216: ...cement Procedures Installing an Optional PC Card To install a PC card follow the steps below and refer to figure 4 2 1 Insert a PC card 2 Push it carefully to ensure a firm connection Satellite A20 Maintenance Manual 960 444 4 11 ...

Page 217: ...roper procedures and precautions 1 Turn the computer face up 2 Push the SD card in indicated as 1 in the figure below and release it to pop the card out slightly 3 Grasp the SD card and pull it out indicated as 2 in the figure below SD card Figure 4 3 Removing an SD card Installing an Optional SD Card To install an SD card option follow the steps below and refer to figure 4 3 1 Insert an SD card 2...

Page 218: ...the arrow Hold it by the sides HDD Removing the HDD To remove the HDD follow the steps below and refer to figures 4 4 to 4 6 1 Turn the computer upside down 2 Remove the following screw securing the HDD cover M2 5 4 FLAT HEAD screw 1 Figure 4 4 Removing the HDD cover Satellite A20 Maintenance Manual 960 444 4 13 ...

Page 219: ...cedures 4 5 HDD 3 Lift up the HDD cover 4 Pull the guide of the HDD and remove the HDD Be careful not to damage the connector HDD pack Guide Figure 4 5 Removing the HDD pack 4 14 Satellite A20 Maintenance Manual 960 444 ...

Page 220: ...erly 5 Place the HDD pack on a flat surface and remove the following screws M3 4 FLAT screw 4 6 Remove the HDD bracket 7 Remove the aluminum cover CAUTION Do not apply pressure to the top or bottom of the HDD M3 4 FLAT screws M3 4 FLAT screws HDD bracket A Aluminum cover Figure 4 6 Removing the HDD bracket Satellite A20 Maintenance Manual 960 444 4 15 ...

Page 221: ...screws M3 4 FLAT screw 4 CAUTION Do not apply pressure to the middle of the HDD pack It may damage the HDD bracket Hold the HDD by its corners 4 Hold the HDD pack by its corners and insert the A side of the HDD bracket into the hole of the dent on the back of the computer first Then lay the HDD pack in the dent and slide it to the connector of the computer to connect Press to ensure a firm connect...

Page 222: ...g the modem daughter card M2 3 SUPER FLAT screw 2 2 Turn over the insulator covering the modem daughter card 3 Carefully lift up the modem daughter card to disconnect it from PJ3010 on the sound board 4 Carefully disconnect the modem cable from JP1 on the modem daughter card M2 3 SUPER FLAT screw PJ3010 Modem cable Modem daughter card Figure 4 7 Removing the Modem daughter card Satellite A20 Maint...

Page 223: ... cable to JP1 on the modem daughter card 2 Turn over the insulator on the modem daughter card slot 3 Seat the modem daughter card and press carefully on the right end of the card to connect it to PJ3010 on the sound board Be careful not to damage the card or connector 4 Secure the modem daughter card with the following screws M2 3 SUPER FLAT screw 2 4 18 Satellite A20 Maintenance Manual 960 444 ...

Page 224: ... 4 8 and 4 9 CAUTION The ODD can become hot with use Be careful when removing the module 1 Remove the following screw securing the ODD cover M2 5 6 FLAT HEAD screw 2 2 While sliding the latch to the back side of the computer disconnect the ODD from PJ1820 on the system board Satellite A20 Maintenance Manual 960 444 4 19 ...

Page 225: ...4 Replacement Procedures 4 7 ODD 3 Carefully slide the ODD to the side of the computer M2 5 4 SUPER FLAT screws ODD Figure 4 8 Removing the ODD 4 20 Satellite A20 Maintenance Manual 960 444 ...

Page 226: ... the following screws and the plastic frame M2 3 SUPER FLAT screw 4 M2 5 SUPER FLAT screw 1 M2 3 SUPER FLAT screw Frame M2 3 SUPER FLAT screw M2 5 SUPER FLAT screw Figure 4 9 Disassembling the ODD Satellite A20 Maintenance Manual 960 444 4 21 ...

Page 227: ...d 4 9 1 Seat the plastic frame on the side of the ODD and secure it with the following screws M2 3 SUPER FLAT screw 4 M2 5 SUPER FLAT screw 1 2 Slide the ODD and connect the drive to PJ1820 on the system board 3 Secure the ODD with the following screws M2 5 4 FLAT HEAD screw 2 4 22 Satellite A20 Maintenance Manual 960 444 ...

Page 228: ... The filter can not be removed CAUTION The cooling fan can become very hot during operation Wait for the fan to cool before removing it Do not touch the fan rotor or fan blades or apply impact to the cooling fan module 1 Remove the following screws securing the fin cover and remove the fin cover M2 5 6 FLAT HEAD screw 2 2 Remove the following screws securing the fan cover and remove the fan cover ...

Page 229: ...isconnect the fan cable from PJ9900 on the system board M2 5 6 FLAT HEAD screw M2 5 4 FLAT HEAD screw PJ9900 Fan M2 5 6 FLAT HEAD screw Fan cover Fin cover Figure 4 10 Removing the Cooling fan module 4 24 Satellite A20 Maintenance Manual 960 444 ...

Page 230: ...ntation of the filter attached to the fan cover 1 Seat the cooling fan 2 Secure the cooling fan with the following screws M2 5 6 FLAT HEAD screw 2 3 Connect the fan cable to PJ9900 on the system board 4 Place the fan cover and secure it with the following screws M2 5 4 FLAT HEAD screw 2 5 Place the fin cover and secure it with the following screws M2 5 6 FLAT HEAD screw 2 Satellite A20 Maintenance...

Page 231: ...ve the CPU wipe the grease off of the bottom of the heat sink bottom of the cooling fan and top of the CPU Apply new grease when installing 1 Remove the following screw securing the fin cover and remove the fin cover M2 5 6 FLAT HEAD screw 2 M2 5 6 FLAT HEAD screw Fin cover Figure 4 11 Removing the Fin cover 4 26 Satellite A20 Maintenance Manual 960 444 ...

Page 232: ... 4 8 Cooling Fan 3 Remove the following screws securing the fin and remove the fin by lifting it up directly above M2 18 BIND screw 2 CAUTION Silicon grease is applied between the fin and the CPU When removing the fin be careful not to damage the CPU under the fin M2 18 BIND screw Fin Fan cover Figure4 12 Removing the Fin Satellite A20 Maintenance Manual 960 444 4 27 ...

Page 233: ...lacement Procedures 4 9 CPU 4 Turn the cam to the unlock position with a flat blade screwdriver to unlock the CPU Figure 4 13 Unlocking the CPU 4 Lift up the CPU 4 28 Satellite A20 Maintenance Manual 960 444 ...

Page 234: ...et to the lock position with a flat blade screwdriver to secure the CPU 4 Apply new grease on the CPU using a special syringe as shown in the following figure Apply quarter of scale 0 25ml of grease evenly on the CPU chip When silicon grease is already applied to the CPU wipe them off with a close in advance CAUTION When installing the CPU apply new grease on the top of the CPU chip When installin...

Page 235: ...d secure it with the following screws M2 18 BIND screw 2 6 Install the fan and fan cover NOTE To remove the fin the fan cover and fan must be removed For installing the fan and fan cover refer to 4 8 Cooling Fan 7 Place the fin cover and secure it with the following screws M2 5 6 FLAT HEAD screw 2 ...

Page 236: ...eps below and refer to figures 4 15 to 4 17 1 Turn the computer face up and open the display panel 2 Insert your fingernails into latches between the keyboard brace and the computer and lift up the keyboard brace to unlatch and remove it Keyboard brace Figure 4 15 Removing the Keyboard brace Satellite A20 Maintenance Manual 960 444 4 31 ...

Page 237: ...M2 5 4 FLAT HEAD screw 2 4 Remove the following screw securing the keyboard hold plate and remove the keyboard hold plate M2 5 4 FLAT HEAD screw 1 M2 5 4 FLAT HEAD screw M2 5 4 FLAT HEAD screw Keyboard hold plate Figure 4 16 Removing the Keyboard 4 32 Satellite A20 Maintenance Manual 960 444 ...

Page 238: ...ring the keyboard support plate and remove the keyboard support plate M2 5 6 FLAT HEAD screw 1 PJ3230 M2 5 6 SUPER FLAT screw Keyboard support plate Tab Figure 4 17 Removing the Keyboard support plate 7 Disconnect the keyboard cable from PJ3230 on the system board and remove the keyboard Satellite A20 Maintenance Manual 960 444 4 33 ...

Page 239: ...the keyboard cable and secure the keyboard support plate with the following screw M2 5 6 FLAT HEAD screw 1 4 Align the tabs on the bottom of the keyboard with the holes on the top cover and rotate the keyboard down 5 Secure the keyboard with the following screws M2 5 4 FLAT HEAD screw 2 6 Place the keyboard hold plate on the keyboard and the switch board Then secure the keyboard hold plate with th...

Page 240: ...ged CAUTION Do not touch the connectors on the memory module s or on the computer Debris on the connectors may cause memory access problems 1 Turn up the insulator covering the memory slots 2 Press out on two latches One end of the memory module will pop up 3 Grasp the memory module and pull it out to remove the memory module from PJ1400 Slot A or PJ1401 Slot B on the system board Memory module In...

Page 241: ...ter or the memory may be damaged 2 Do not touch the connectors on the memory module or on the computer Debris on the connectors may cause memory access problems 1 Turn up the insulator and insert a memory module into PJ1400 Slot A or PJ1401 Slot B on the system board at an angle of 45 degrees and press carefully to ensure firm connection 2 Push the memory module down until notches on either side e...

Page 242: ...AN card for a b combo model is described for example CAUTION Do not try to remove the wireless LAN card with the computer turned on You can damage the computer or the wireless LAN card Do not touch the connectors on the wireless LAN card module on the computer Debris on the connectors may cause wireless LAN card access problems 1 Turn up the keyboard insulator 2 For a b combo models Remove the fol...

Page 243: ...LAN card Wireless LAN antenna cables black and white Keyboard insulator black Figure 4 20 Removing the Wireless LAN card 4 Push the wireless LAN card lock latches outward to release the wireless LAN card It will pop up to about a 45 degree angle 5 Disconnect the wireless LAN card from PJ2200 on the system board Be careful not to damage the connector 4 38 Satellite A20 Maintenance Manual 960 444 ...

Page 244: ... and white to the connectors on the wireless LAN card CAUTION Put the excess portion of wireless LAN cables in empty space Be careful not to place the cables on the wireless LAN card Be careful not to damage or pinch the cables when installing the wireless LAN card 4 For a b combo models Secure the wireless LAN card cover with the following screw M2 4 LH STICK screw 1 5 Seat the keyboard insulator...

Page 245: ...Bluetooth module on the computer Debris on the connectors may cause Bluetooth access problems 1 Remove the Bluetooth coaxial cable brown from the Bluetooth module using an antenna coaxial cable disconnector 2 Remove the following screw securing the Bluetooth module M2 3 SUPER FLAT screw 1 3 Lift up the Bluetooth module and disconnect the Bluetooth SUMI card from PJ4900 on the system board 4 Remove...

Page 246: ...etooth follow the steps below and refer to figure 4 21 1 Connect the Bluetooth SUMI card to the connector on the Bluetooth module 2 Connect the Bluetooth SUMI card to PJ4900 on the system board 3 Place the Bluetooth module 4 Secure the Bluetooth module with the following screw M2 3 SUPER FLAT screw 1 5 Connect the Bluetooth coaxial cable brown to the Bluetooth module Satellite A20 Maintenance Manu...

Page 247: ...isplay assembly follow the steps below and refer to figures 4 23 and 4 24 1 Turn the computer face down and remove the following 24 screws M2 5 6 FLAT HEAD screw 11 M2 5 20 BIND screw 8 M2 5 4 FLAT HEAD screw 5 20 20 20 20 20 20 20 20 4 4 4 4 4 6 6 6 6 6 6 6 6 6 6 6 PJ8770 Sub fan cable Figure 4 23 Removing the Display assembly 4 42 Satellite A20 Maintenance Manual 960 444 ...

Page 248: ... an d disconnect the two LCD cables from PJ5600 and PJ5601 and the speaker cables from PJ9512 red and PJ9513 blue on the system board Keyboard insulator PJ9512 Red PJ9513 Blue Speaker cable PJ5600 green PJ5601 white M2 5 6 FLAT HEAD screw Tape Figure 4 24 Removing the Top cover 6 Remove the top cover with display assembly starting from the front side of the computer Be careful not to damage the wi...

Page 249: ...edges of the top cover with display assembly to secure latches 3 Turn up the keyboard insulator and connect the two LCD cables to PJ5600 green and PJ5601 white on the system board 4 Connect the speaker cables to PJ9512 red and PJ9513 blue 5 Secure the top cover to the display assembly with the following screws M2 5 6 FLAT HEAD screw 4 6 Turn the computer face down and connect the sub fan cable to ...

Page 250: ...touch pad SUMI card from PJ3240 on the system board 2 Remove the following screw securing the touch pad M2 5 4 FLAT HEAD screw 1 3 Lift out the touch pad Touch Pad Touch Pad SUMI card PJ3240 M2 5 4 FLAT HEAD screw Figure 4 25 Removing the Touch Pad 4 Disconnect the touch pad SUMI card from J1 on the touch pad if necessary Satellite A20 Maintenance Manual 960 444 4 45 ...

Page 251: ...s below and refer to figure 4 25 1 Connect the touch pad SUMI card to J1 on the touch pad if necessary 2 Seat the touch pad 3 Secure the touch pad with the following screw M2 5 4 FLAT HEAD screw 1 4 Connect the touch pad SUMI card to PJ3240 on the system board 4 46 Satellite A20 Maintenance Manual 960 444 ...

Page 252: ...nnect the front membrane cable from PJ3260 on the system board 2 Remove the following screws securing the front membrane holder M2 5 4 FLAT HEAD screw 2 3 Remove the front membrane holder and the front membrane ASSY PJ3260 M2 5 4 FLAT HEAD screw Front membrane ASSY Front membrane holder Front membrane cable Figure 4 26 Removing the Front membrane ASSY Satellite A20 Maintenance Manual 960 444 4 47 ...

Page 253: ... membrane ASSY follow the steps below and refer to figures 4 26 1 Place the front membrane ASSY and front membrane holder on it and secure them with the following screws M2 5 4 FLAT HEAD screws 2 2 Connect the front membrane cable to PJ3260 on the system board 4 48 Satellite A20 Maintenance Manual 960 444 ...

Page 254: ...w the steps below and refer to figure 4 27 1 Remove the following screws securing the FIR board M2 5 6 FLAT HEAD screws 2 2 Disconnect the FIR board from PJ9500 on the system board PJ9610 FIR Board PJ9500 M2 5 6 FLAT HEAD screws Figure 4 27 Removing the FIR board Satellite A20 Maintenance Manual 960 444 4 49 ...

Page 255: ...stem board 2 Check the position of the wireless communication switch on the FIR board and the switch on the system chassis Fit their positions and place the FIR board Make sure they are correctly interlocked by sliding the switch on the system chassis several times 3 Secure the FIR board with the following screws M2 5 6 FLAT HEAD screws 2 4 50 Satellite A20 Maintenance Manual 960 444 ...

Page 256: ...d PJ9511 on the system board 2 Remove the following screw securing the sound board M2 5 6 FLAT HEAD screw 1 3 Lift up the sound board and remove it by pulling toward the arrow direction in the figure 4 Disconnect the sound board SUMI card from PJ9600 and PJ9601 on the sound board PJ9510 PJ9511 M2 5 6 FLAT HEAD screw Sound board Figure 4 28 Removing the Sound board Satellite A20 Maintenance Manual ...

Page 257: ... board SUMI card to PJ9600 and PJ9601 on the sound board 2 Seat the sound board When seating insert three jacks on the sound board into the holes of the chassis first 3 Connect the sound board SUMI card to PJ9510 and PJ9511 on the system board 4 Secure the sound board with the following screw M2 5 6 FLAT HEAD screw 1 4 52 Satellite A20 Maintenance Manual 960 444 ...

Page 258: ...Corrosion greenish color on the battery connector or cable Corrosion on the computer s battery connector White powder on any part of the battery White powder in the battery tray Clear liquid on the battery Clear liquid in the battery tray Clear liquid on any board near the battery 2 Damage to the connection cable 3 Damage to the connector housing If any powder or liquid is found in or around the b...

Page 259: ...tem board 2 Pull the hook on each side fixing the RTC battery outward and lift out the RTC battery RTC battery PJ9999 System board Figure 4 29 Removing the RTC battery Installing the RTC Battery To install the RTC battery follow the steps below and refer to figure 4 29 1 Seat the RTC battery 2 Connect the RTC battery cable to PJ9999 on the system board 4 54 Satellite A20 Maintenance Manual 960 444...

Page 260: ...steps below and refer to figure 4 30 1 Disconnect the DC IN cable from PJ8800 on the system board 2 Remove the DC IN jack DC IN cable PJ8800 DC IN jack Figure 4 30 Removing the DC IN jack Installing the DC IN Jack To install the DC IN jack follow the steps below and refer to figure 4 30 1 Seat the DC IN jack 2 Connect the DC IN cable to PJ8800 on the system board ...

Page 261: ...stem board M2 5 6 FLAT HEAD screw 3 M2 5 6 FLAT HEAD screws Key bracket System board Plastic holder Guide Modem jack Figure 4 31 Removing the System board 2 Lift up the system board from the DC IN cable side and remove it When removing press slightly the left part of the rear frame A in the figure of the chassis outside 3 Remove the modem jack 4 Remove the key bracket on the left side of the chass...

Page 262: ...system board and plastic holder When seating the system board insert the PC card slot into the chassis first 4 Secure the plastic board and the system board with the following screws M2 5 6 FLAT HEAD screw 3 NOTE When you install the system board you will need to apply the appropriate setting for the CPU in use Please refer to 4 31 Addendum for this information The settings must be applied before ...

Page 263: ...ub fan board follow the steps below and refer to figure 4 32 1 Remove the following screws securing the sub fan M2 5 6 FLAT HEAD screw 2 2 Remove the sub fan M2 5 6 FLAT HEAD screw Sub fan Chassis Sub fan cable Figure4 32 Removing the Sub Fan 4 58 Satellite A20 Maintenance Manual 960 444 ...

Page 264: ... install the sub fan board follow the steps below and refer to figures 4 32 1 Place the sub fan 2 Pass the sub fan cable in the hole of the chassis 3 Secure the sub fan with the following screws M2 5 6 FLAT HEAD screw 2 Satellite A20 Maintenance Manual 960 444 4 59 ...

Page 265: ... and refer to figure 4 33 1 Lay the system board face up 2 Remove the following screws securing the PC card slot M2 12 BIND screw 4 M2 12 BIND screw PC Card slot Figure 4 33 Removing the PC card slot 3 Lay the system board face up 4 Disconnect the PC card slot from PJ2110 on the system board 4 60 Satellite A20 Maintenance Manual 960 444 ...

Page 266: ... the PC card slot to connect it to PJ2110 Make sure the connection is secure 3 Lay the system board face up 4 Secure the PC card slot with the following screws M2 12 BIND screw 4 CAUTION If you do not seat the PC card slot completely you might not be able to connect the system board properly Make sure the PC card slot is connected to the connector on the system board Satellite A20 Maintenance Manu...

Page 267: ...o figures 4 34 and 4 35 1 Lay the top cover and display assembly face down and remove the insulator 2 Remove the following screws securing the side covers M2 5 6 FLAT HEAD screw 4 M2 5 6 FLAT HEAD screw Speaker cables Tape Tape Speaker Right Speaker Left Figure 4 34 Removing the Speakers 4 62 Satellite A20 Maintenance Manual 960 444 ...

Page 268: ...ng the Side cover Installing the Speakers To install the speakers follow the steps below and refer to figures 4 34 and 4 35 1 Install the side cover right and left on the front of the computer 2 Place each speaker from the back and secure the side covers with the following screws M2 5 6 FLAT HEAD screw 4 3 Route the speaker cables through guides 4 Secure the speaker cables with tape 5 Seat the ins...

Page 269: ...ch M2 5 4 TAPPING screw 3 2 Removing the touch pad switches M2 5 4 TAPPING screw Touch pad switch Figure 4 36 Removing the Touch pad switch Installing the Touch Pad Switch To install the touch pad switch follow the steps below and refer to figure 4 36 1 Place the touch pad switches on the back of the palm rest 2 Secure the touch pad switch with the following screws M2 5 4 TAPPING screw 3 4 64 Sate...

Page 270: ...s 4 37 and 4 38 1 Remove the two mask seals at the lower part of the display mask 2 Remove the following screws securing the display mask M2 5 6 FLAT HEAD screw 2 M2 5 6 FLAT HEAD screw Mask seal Figure 4 37 Removing the Display mask 1 3 Release the latches on the display mask from the upper side of the display Satellite A20 Maintenance Manual 960 444 4 65 ...

Page 271: ...y Mask To install the display mask follow the steps below and refer to figures 4 37 and 4 38 1 Place the display mask in its position 2 Fasten the latches of the display mask 3 Secure the display mask with the following screw M2 5 6 FLAT HEAD screw 2 4 Stick the two mask seals on the top of screws 4 66 Satellite A20 Maintenance Manual 960 444 ...

Page 272: ...9 1 Remove the following screw securing the FL inverter M2 6 SUPER FLAT screw 1 2 Remove the insulator and disconnect the FL cable from the FL inverter 3 Disconnect the HV cable from the FL inverter 4 Remove the FL inverter M2 5 SUPER FLAT screw HV cable FL inverter FL cable Figure 4 39 Removing the FL inverter Satellite A20 Maintenance Manual 960 444 4 67 ...

Page 273: ...steps below and refer to figure 4 39 1 Connect the FL cable and the HV cable to the FL inverter 2 Seat the FL inverter board and stick the insulator on the FL inverter of the FL cable side 3 Secure the FL inverter with the following screw M2 5 SUPER FLAT screw 1 4 68 Satellite A20 Maintenance Manual 960 444 ...

Page 274: ...o remove the LCD Module follow the steps below and refer to figures 4 40 and 4 41 1 Remove the following screws securing the LCD module M2 5 SUPER FLAT screw 4 2 Carefully rotate out the top of the LCD module to access the LCD cable NOTE When rotating the top of the LCD module hold the corners of the LCD module The top edge of LCD module is sensitive area 3 For SXGA models only Remove the copper t...

Page 275: ... 4 28 LCD Module 5 Disconnect the LCD cable and remove the LCD module Glass tape M2 5 SUPER FLAT screw Connector Copper tape SXGA models only Figure 4 40 Removing the LCD module 1 4 70 Satellite A20 Maintenance Manual 960 444 ...

Page 276: ...move the following screw securing the two metal braces to the LCD module M2 3 SUPER FLAT screw 4 M2 3 SUPER FLAT screw M2 3 SUPER FLAT screw LCD module Metal brace Figure 4 41 Removing the LCD module 2 Satellite A20 Maintenance Manual 960 444 4 71 ...

Page 277: ...onnect the LCD cable to the LCD module 4 Stick the grass tape on the LCD cable 5 For SXGA models only Stick the copper tape on the LCD cable NOTE When sticking the copper tape make sure the copper part of the copper tape is in the center position of the LCD cable 6 Seat the LCD module and secure it with the following screws M2 5 SUPER FLAT screw 4 CAUTION Make sure the cables lie inside the guide ...

Page 278: ...y cover follow the steps below and refer to figures 4 42 to 4 48 NOTE When you open or close the top cover hold it by the sides close to the hinges to prevent damage 1 Remove the latch assembly on the display cover First press the inside switch dark blue outward and remove it Then remove the switch light blue by lifting it up Switch light blue Inside switch dark blue Spring Slots Figure 4 42 Remov...

Page 279: ...e tapes securing the wireless LAN antenna cables and Bluetooth antenna cable and remove the wireless LAN antennas and Bluetooth antenna from the display cover Wireless LAN Bluetooth antenna cables Acetate tape Wireless LAN antenna Bluetooth antenna Figure 4 43 Removing the Wireless LAN Bluetooth antenna 4 74 Satellite A20 Maintenance Manual 960 444 ...

Page 280: ...acement Procedures 3 Remove the following screw securing the metal plate on the LCD cable and remove the metal plate M2 5 4 TAPPING screw 1 M2 5 4 TAPPING screw Metal plate LCD cable Figure 4 44 Removing the LCD cable 1 Satellite A20 Maintenance Manual 960 444 4 75 ...

Page 281: ...tor 5 Remove the following screws securing the cable hold plate and cable earth plate M2 5 6 TAPPING screw 2 Cable hold plate M2 5 6 TAPPING screw Cable earth plate Figure 4 45 Removing the Cable hold plate Cable earth plate 6 Remove the cable hold plate first Then remove the cable earth plate 4 76 Satellite A20 Maintenance Manual 960 444 ...

Page 282: ...ss LAN Antenna Bluetooth Antenna Display Cover 4 Replacement Procedures 7 Remove the LCD cable from the display assembly LCD cable Figure 4 46 Removing the LCD cable 2 Satellite A20 Maintenance Manual 960 444 4 77 ...

Page 283: ...Cover 8 Remove the following screws securing the two hinges to the display cover M2 5 4 FLAT HEAD screw 2 M2 5 5 FLAT HEAD screw 4 M2 5 4 FLAT BIND screw M2 5 5 FLAT HEAD screw M2 5 5 FLAT HEAD screw Figure 4 47 Removing the Hinge 1 4 78 Satellite A20 Maintenance Manual 960 444 ...

Page 284: ...es 9 Remove the display cover from the display assembly 10 Remove the following screws securing the two hinges to the display cover M2 5 6 FLAT HEAD screw 4 M2 5 6 FLAT HEAD screw M2 5 6 FLAT HEAD screw Figure 4 48 Removing the Hinge 2 Satellite A20 Maintenance Manual 960 444 4 79 ...

Page 285: ... hinges with the following screws M2 5 6 FLAT HEAD screw 4 2 For wireless LAN Bluetooth models only Fit the wireless LAN antennas and Bluetooth antenna to the groove on the rear of the display cover and secure it with the three acetate tapes Then pass the wireless LAN cables black and white and Bluetooth cable brown through the guides on the back of the display cover Blutooth antenna cable brown W...

Page 286: ... guide on the chassis M2 5 6 TAPPING screw 2 6 Install the display cover to the two hinges of the display assembly and secure it with the following screws M2 5 4 FLAT HEAD screw 2 M2 5 5 FLAT HEAD screw 4 7 Place the metal plate on the LCD cable and secure it with the following screw M2 5 4 TAPPING screw 1 8 Install the latch assembly on the display cover First install the switch light blue on the...

Page 287: ...VF2058P01 Samsung 4 30 10 14 1 inch XGA VF2062P01 L G Philips 4 30 11 NOTE When working with an LCD module always use a flat grounded table Handle the backlight unit in the environment without dust such as on the clean bench Keep the worktable free from any screws or other material that may scratch the LCD surface Use an anti static or protective sheet When replacing the FL unit cover with a finge...

Page 288: ...uorescent lamp follow the steps below and refer to figures 4 50 to 4 53 1 Remove the outside tape and cover shield 1 Remove the adhesive tape fixing the B L wire Be careful not to apply to the B L wire 2 Remove the cover shield G Be careful not to apply excessive force to the gate TCP 3 Remove the cover shield C Be careful not to apply excessive force to the source PCB CUATION Wear anti static glo...

Page 289: ...ement Procedure 4 30 Fluorescent Lamp Cover shield C Tape shield Adhesive tape Cover shield G Adhesive tape Figure 4 50 Replacing LG Philips fluorescent lamp XGA 1 4 84 Satellite A20 Maintenance Manual 960 444 ...

Page 290: ... Replacement Procedure 2 Remove the top case Be careful not to apply excessive force to the top case and gate TCP Top case Figure 4 51 Replacing LG Philips fluorescent lamp XGA 2 Satellite A20 Maintenance Manual 960 444 4 85 ...

Page 291: ...not to apply excessive force to the PCB or TCP when removing the double sided tape 2 Remove the gate PCB Be careful not to apply excessive force to the PCB or TCP when removing the double sided tape Source PCB Gate PCB Figure 4 52 Replacing LG Philips fluorescent lamp XGA 3 4 86 Satellite A20 Maintenance Manual 960 444 ...

Page 292: ...o penetration of foreign object is indispensable not to scratch the sheets 4 Remove the screw and cover assembly bottom L NOTE Maximum value of torque is 1 5kg cm Board assembly Double sided tape Adhesive tape Sheets and LGP Double sided tape Adhesive tape Double sided tape Adhesive tape Double sided tape Adhesive tape Screw Cover assembly bottom L Screw Figure 4 53 Replacing LG Philips fluorescen...

Page 293: ...lm from the cover assembly bottom L 2 Secure the cover assembly bottom L with the two screws NOTE Maximum value of torque is 2 0kg cm 3 Install the light guide and sheets Secure the reflection sheets with double sided tape NOTE No penetration of foreign object is indispensable not to scratch the surface of the sheets 4 Stick the adhesive tape to fix the sheets 5 Install the board assembly Secure t...

Page 294: ...ded tape Adhesive tape Sheets and LGP Double sided tape Adhesive tape Double sided tape Adhesive tape Double sided tape Adhesive tape Screw Cover assembly bottom L Screw Figure 4 54 Replacing LG Philips fluorescent lamp XGA 5 Satellite A20 Maintenance Manual 960 444 4 89 ...

Page 295: ...B 1 Install the source PCB NOTE Be careful not to apply excessive force to the TCP 2 Install the gate PCB NOTE Be careful not to apply excessive force to the TCP Source PCB Gate PCB Figure 4 55 Replacing LG Philips fluorescent lamp XGA 6 4 90 Satellite A20 Maintenance Manual 960 444 ...

Page 296: ...mp 4 Replacement Procedure 3 Install the top case NOTE Be careful not to apply excessive force to the gate TCP Top case Figure 4 56 Replacing LG Philips fluorescent lamp XGA 7 Satellite A20 Maintenance Manual 960 444 4 91 ...

Page 297: ...pply excessive force to the top case 2 Install the cover shield C NOTE Be careful not to apply excessive force to the control PCB CAUTION Wear anti static gloves to prevent circuit damage to the source PCB 3 Install the cover shield G NOTE Be careful not to apply excessive force to the gate TCP 4 Stick the adhesive tape to fix the B L wire 4 92 Satellite A20 Maintenance Manual 960 444 ...

Page 298: ...ocedure NOTE Be careful not to apply excessive force to the B L wire Cover shield C Tape shield Adhesive tape Cover shield G Adhesive tape Figure 4 57 Replacing LG Philips fluorescent lamp XGA 8 Satellite A20 Maintenance Manual 960 444 4 93 ...

Page 299: ...A Samsung Fluorescent Lamp To disassemble the 15 0 inch XGA Samsung fluorescent lamp follow the steps below and refer to figures4 58 to 4 65 1 Remove the PCB cover NOTE When removing the PCB cover be careful not to damage the COF PCB cover Figure 4 58 Replacing Samsung fluorescent lamp XGA 1 4 94 Satellite A20 Maintenance Manual 960 444 ...

Page 300: ...4 30 Fluorescent Lamp 4 Replacement Procedure 2 Remove the two screws Screw Screw Figure 4 59 Replacing Samsung fluorescent lamp XGA 2 Satellite A20 Maintenance Manual 960 444 4 95 ...

Page 301: ...acement Procedure 4 30 Fluorescent Lamp 3 Remove the four screws from the top chassis Screw Screw Screw Screw Figure 4 60 Replacing Samsung fluorescent lamp XGA 3 4 96 Satellite A20 Maintenance Manual 960 444 ...

Page 302: ...e 4 Remove the four bottom hooks and four side hooks left and right Then remove the top chassis from the mold frame Side hook Side hook Bottom hook Figure 4 61 Replacing Samsung fluorescent lamp XGA 4 Satellite A20 Maintenance Manual 960 444 4 97 ...

Page 303: ...p 5 Remove the panel assembly from the mold frame NOTE When removing the panel assembly be careful not to damage the COF Panel assembly Mold frame Figure 4 62 Replacing Samsung fluorescent lamp XGA 5 4 98 Satellite A20 Maintenance Manual 960 444 ...

Page 304: ...ets and clips 1 Remove the two clips fixing the sheets 2 Remove the sheets protection sheet prism sheet L U diffusion sheet LGP and reflection sheet Clip Clip Sheets Figure 4 63 Replacing Samsung fluorescent lamp XGA 6 Satellite A20 Maintenance Manual 960 444 4 99 ...

Page 305: ...t Lamp 7 Remove the lamp back cover 1 Remove the two screws from the lamp back cover 2 Remove the lamp back cover Lamp back cover Screw Screw Figure 4 64 Replacing Samsung fluorescent lamp XGA 7 4 100 Satellite A20 Maintenance Manual 960 444 ...

Page 306: ...uorescent Lamp 4 Replacement Procedure 8 Remove the lamp wire from the wire guide of the mold frame Lamp wire Figure 4 65 Replacing Samsung fluorescent lamp XGA 8 Satellite A20 Maintenance Manual 960 444 4 101 ...

Page 307: ...ement Procedure 4 30 Fluorescent Lamp 9 Remove the lamp assembly from the mold frame Lamp assembly Mold frame Figure 4 66 Replacing Samsung fluorescent lamp XGA 9 4 102 Satellite A20 Maintenance Manual 960 444 ...

Page 308: ...ent Procedure Satellite A20 Maintenance Manual 960 444 4 103 Assembling the 15 0 inch XGA Samsumg Fluorescent Lamp The assembly procedure of the 15 0 inch XGA Samsung fluorescent lamp is the reverse of the above disassembly procedure ...

Page 309: ...o figures4 67 to 4 76 1 Turn the LCD module face down and remove the protection cover S A protection cover G B fixing tape C and fixing tape for lead wire C NOTE 1 Be careful not to damage the TCP or chips 2 The protection cover G is reused Discard the other tapes removed A Protection cover S C Fixing tape B Protection cover G C Fixing tape for lead wire Figure 4 67 Replacing Sharp fluorescent lam...

Page 310: ...amp 4 Replacement Procedures 2 Remove the four screws on the sides Screw loosening torque 1 2kg cm Screw Screw Screw Screw Figure 4 68 Replacing Sharp fluorescent lamp XGA 2 Satellite A20 Maintenance Manual 960 444 4 105 ...

Page 311: ...zel E E Bezel 1 Release the bezel from the four latches of the lamp cover 2 Release the two latches left and right on the P chassis 3 Release the hook of the bezel from the lamp cover Side view Hook Figure 4 69 Replacing Sharp fluorescent lamp XGA 3 4 106 Satellite A20 Maintenance Manual 960 444 ...

Page 312: ...face down and remove the two screws fixing the board Then open the bent portion of the TCP of the board and remove the backlight Screw Screw Screw loosening torque 1 2kg cm Figure 4 70 Replacing Sharp fluorescent lamp XGA 4 Satellite A20 Maintenance Manual 960 444 4 107 ...

Page 313: ...t Procedures 4 30 Fluorescent Lamp Do not hold the edge Do not hold the edge Raise the board and make this condition Figure 4 71 Replacing Sharp fluorescent lamp XGA 5 4 108 Satellite A20 Maintenance Manual 960 444 ...

Page 314: ...remove the LCD panel I from the backlight unit H CAUTION Wear finger sacks or gloves during the work not to soil or scratch the LCD panel or backlight unit H Back light unit I LCD panel Figure 4 72 Replacing Sharp fluorescent lamp XGA 6 Satellite A20 Maintenance Manual 960 444 4 109 ...

Page 315: ...d face down and remove the two screws D and lamp cover J NOTE Be careful not to scratch or soil the sheets Screw loosening torque 1 2kg cm H Backlight unit J Lamp cover D Screw D Screw Figure 4 73 Replacing Sharp fluorescent lamp XGA 7 4 110 Satellite A20 Maintenance Manual 960 444 ...

Page 316: ...ens sheet L and light guide M NOTE Be careful not to scratch or soil the removed sheets or light guide to reuse them Do not remove the reflection sheet under the light guide K Upper diffusion sheet L Lens sheet M Light guide Figure 4 74 Replacing Sharp fluorescent lamp XGA 8 Satellite A20 Maintenance Manual 960 444 4 111 ...

Page 317: ...ur double sided tapes N O P Q NOTE Discard the removed tapes Do not reuse them P Double sided tape 3 Q Double sided tape 4 N Double sided tape 1 O Double sided tape 2 Figure 4 75 Replacing Sharp fluorescent lamp XGA 9 4 112 Satellite A20 Maintenance Manual 960 444 ...

Page 318: ... face down and remove the lamp unit R from the P chassis CAUTION When removing the lamp unit be careful not to break the lamp or bend the reflection sheet P chassis Lamp unit Figure 4 76 Replacing Sharp fluorescent lamp XGA 10 Satellite A20 Maintenance Manual 960 444 4 113 ...

Page 319: ...rp XGA fluorescent lamp follow the steps below and refer to figures 4 77 to 4 89 1 Stick the four double sided tapes N O P Q on the P chassis P Q N O Standard for edge of P chassis Do not make the P chassis over this line 0 to 1 mm Figure 4 77 Replacing Sharp fluorescent lamp XGA 11 4 114 Satellite A20 Maintenance Manual 960 444 ...

Page 320: ...unit face down and install a new lamp unit R on the P chassis NOTE When install the lamp unit R be careful not to bend or damage the reflection sheet P chassis R Lamp unit Figure 4 78 Replacing Sharp fluorescent lamp XGA 12 Satellite A20 Maintenance Manual 960 444 4 115 ...

Page 321: ...tion drawing of Z Z Install the lead wire into this groove Install the reflection sheet as it is placed inside the reflector Install the lamp unit without floating Figure 4 79 Replacing Sharp fluorescent lamp XGA 13 4 116 Satellite A20 Maintenance Manual 960 444 ...

Page 322: ...s 3 Install the lamp cover J on the backlight unit and secure it with the two screws D J Lamp cover D Screw D Screw Screw tightening torque 1 0kg cm Figure 4 80 Replacing Sharp fluorescent lamp XGA 14 Satellite A20 Maintenance Manual 960 444 4 117 ...

Page 323: ... Lamp 4 Install the light guide M on the backlight unit Insert the light guide straight not to deform the reflector M Light guide Backlight unit Figure 4 81 Replacing Sharp fluorescent lamp XGA 15 4 118 Satellite A20 Maintenance Manual 960 444 ...

Page 324: ...sion sheet K on the backlight unit with light guide K Upper diffusion sheet L Lens sheet M Light guide Make sure there is no dust or scratch Do not make any sheet over the edge of P chassis Figure 4 82 Replacing Sharp fluorescent lamp XGA 16 Satellite A20 Maintenance Manual 960 444 4 119 ...

Page 325: ... panel and backlight unit If any dust is found remove it with crepe tape or others which has no remaining of paste H Backlight unit I LCD panel Guide rib Guide rib Guide rib Guide rib Make sure the LCD panel is installed in the guide rib surely Figure 4 83 Replacing Sharp fluorescent lamp XGA 17 4 120 Satellite A20 Maintenance Manual 960 444 ...

Page 326: ...ent Procedures 7 Bend the TCP attaching to the source board and secure it with the two screws Do not hold the edge Do not hold the edge Figure 4 84 Replacing Sharp fluorescent lamp XGA 18 Satellite A20 Maintenance Manual 960 444 4 121 ...

Page 327: ...4 Replacement Procedures 4 30 Fluorescent Lamp Screw Screw Figure 4 85 Replacing Sharp fluorescent lamp XGA 19 4 122 Satellite A20 Maintenance Manual 960 444 ...

Page 328: ...on the lamp cover and two latches on the P chassis E Bezel 2 Lean the bezel on the lamp cover without interference with the TCP 1 Hitch the hook of the bezel on the rib of the P chassis Side view Hook Lamp cover side Figure 4 86 Replacing Sharp fluorescent lamp XGA 20 Satellite A20 Maintenance Manual 960 444 4 123 ...

Page 329: ...of the bezel and the rib of the P chassis Make sure of mating of the bezel and the latch of the P chassis Make sure of mating of the bezel and the latch of the P chassis Figure 4 87 Replacing Sharp fluorescent lamp XGA 21 4 124 Satellite A20 Maintenance Manual 960 444 ...

Page 330: ...escent Lamp 4 Replacement Procedures 9 Secure the sides of the unit with the four screws Screw Screw Screw Screw Figure 4 88 Replacing Sharp fluorescent lamp XGA 22 Satellite A20 Maintenance Manual 960 444 4 125 ...

Page 331: ...ding to the outline of the screw Stick the tape according to the outline of the LCD module Make sure the tape does not appear on the side of the module Do not make the tape over the top of the module 0 to 1 mm The tape MUST NOT appear on the display 0 to 0 5 mm C C B A Figure 4 89 Replacing Sharp fluorescent lamp XGA 23 4 126 Satellite A20 Maintenance Manual 960 444 ...

Page 332: ... inch XGA CHIMEI Fluorescent Lamp To disassemble the 15 0 inch XGA CHIMEI fluorescent lamp follow the steps below and refer to figures4 90 to 4 95 1 Remove the CU tape yellow tape and protector film X Tape CU tape Protector film X Figure 4 90 Replacing CHIMEI fluorescent lamp XGA 1 Satellite A20 Maintenance Manual 960 444 4 127 ...

Page 333: ... screws B fixing the X PCB Then remove the eight screws C fixing the metal frame Release the two hooks A B Screw Screw B Detail A A hook A hook C C C C C Screw C C C Figure 4 91 Replacing CHIMEI fluorescent lamp XGA 2 4 128 Satellite A20 Maintenance Manual 960 444 ...

Page 334: ...4 Replacement Procedures 3 Release the latch NOTE Remove the metal frame parallel no to damage it Latch Backlight Metal frame Figure 4 92 Replacing CHIMEI fluorescent lamp XGA 3 Satellite A20 Maintenance Manual 960 444 4 129 ...

Page 335: ... 30 Fluorescent Lamp 4 Remove the X PCB NOTE When removing the X PCB be careful not to damage the TCP X PCB Panel Back light unit Figure 4 93 Replacing CHIMEI fluorescent lamp XGA 4 4 130 Satellite A20 Maintenance Manual 960 444 ...

Page 336: ...BEFIII T diffuser sheet and two tapes from the backlight unit in order NOTE When removing the sheets be careful not to damage them Tape Tape BEFIII M diffuser sheet Spacer BEMIII T diffuser sheet LGP Diffuser sheet Reflector sheet Backlight unit Figure 4 94 Replacing CHIMEI fluorescent lamp XGA 5 Satellite A20 Maintenance Manual 960 444 4 131 ...

Page 337: ... Replacement Procedures 4 30 Fluorescent Lamp 6 Remove the two screws Screw Screw Lamp assembly Housing Figure 4 95 Replacing CHIMEI fluorescent lamp XGA 6 4 132 Satellite A20 Maintenance Manual 960 444 ...

Page 338: ... Procedures Satellite A20 Maintenance Manual 960 444 4 133 Assembling the 15 0 inch XGA CHIMEI fluorescent lamp To assemble procedure of the 15 0 inch XGA CHIMEI fluorescent lamp follow the reverse steps of the disassembling steps above ...

Page 339: ...orescent lamp follow the steps below and refer to figures 4 96 to 4 99 1 Remove the outside tape and cover shield 1 Remove the adhesive tape fixing the B L wire Be careful not to apply excessive force to the B L wire 2 Remove the cover shield G Be careful not to apply excessive force to the gate TCP 3 Remove the cover shield C Be careful not to apply excessive force to the source PCB CAUTION Wear ...

Page 340: ...rescent Lamp 4 Replacement Procedures Cover shield C Tape shield Adhesive tape Cover shield G Adhesive tape Figure 4 96 Replacing LG Philips fluorescent lamp SXGA 1 Satellite A20 Maintenance Manual 960 444 4 135 ...

Page 341: ... 4 30 Fluorescent Lamp 2 Remove the top case Be careful not to apply excessive force to the top case or gate TCP Top case Figure 4 97 Replacing LG Philips fluorescent lamp SXGA 2 4 136 Satellite A20 Maintenance Manual 960 444 ...

Page 342: ...ul not to apply excessive force to the PCB or TCP when removing double sided tape 2 Remove the gate PCB Be careful not to apply excessive force to the PCB or TCP when removing double sided tape Source PCB Gate PCB Figure 4 98 Replacing LG Philips fluorescent lamp SXGA 3 Satellite A20 Maintenance Manual 960 444 4 137 ...

Page 343: ...room to prevent scratch or particle on polarizer or B L assembly 2 Remove the adhesive tape fixing the sheets four points 3 Remove the sheets and light guide NOTE No penetration of foreign object is indispensable not to scratch on the surface of each sheet 4 Remove the two screws fixing the cover assembly bottom L NOTE Maximum value of torque is 1 5kg cm 4 138 Satellite A20 Maintenance Manual 960 ...

Page 344: ...mbly Adhesive tape Sheets and light guide Double sided tape Adhesive tape Double sided tape Adhesive tape Adhesive tape Screw Cover assembly bottom L Screw Figure 4 99 Replacing LG Philips fluorescent lamp SXGA 4 Satellite A20 Maintenance Manual 960 444 4 139 ...

Page 345: ... cover assembly bottom L 2 Secure the cover assembly bottom L with the two screws NOTE Maximum value of torque is 2 0kg cm 3 Install the light guide and sheets Secure the reflection sheet with double sided tape NOTE No penetration of foreign object is indispensable not to scratch on the surface of the sheets and light guide 4 Stick the adhesive tape to fix the sheets 5 Install the board assembly S...

Page 346: ...Sheets and light guide Double sided tape Adhesive tape Double sided tape Adhesive tape Adhesive tape Screw Cover assembly bottom L Screw Double sided tape Double sided tape Figure 4 100 Replacing LG Philips fluorescent lamp SXGA 5 Satellite A20 Maintenance Manual 960 444 4 141 ...

Page 347: ...e PCB 1 Install the source PCB Be careful not to apply excessive force to the TCP 2 Install the gate PCB Be careful not to apply excessive force to the TCP Source PCB Gate PCB Figure 4 101 Replacing LG Philips fluorescent lamp SXGA 6 4 142 Satellite A20 Maintenance Manual 960 444 ...

Page 348: ...mp 4 Replacement Procedures 3 Install the top case Be careful not to apply excessive force to the gate TCP Top case Figure 4 102 Replacing LG Philips fluorescent lamp SXGA 7 Satellite A20 Maintenance Manual 960 444 4 143 ...

Page 349: ...cessive force to the control PCB CAUTION Wear anti static gloves to prevent circuit damage caused by ESC 3 Install the cover shield G Be careful not to apply excessive force to the gate TCP 4 Stick the adhesive tape to fix the B L wire Be careful not to apply excessive force to the B L wire Cover shield C Tape shield Adhesive tape Cover shield G Adhesive tape Figure 4 103 Replacing LG Philips fluo...

Page 350: ...aminating or damaging the LCD module Be careful not to let dust or other foreign substances into the LCD module To disassemble the 15 0 inch SXGA Samsung fluorescent lamp follow the steps below and refer to Figures 4 104 to 4 112 1 Remove the PCB cover source and gate parts and aluminum tape NOTE Be careful not to damage the COF PCB cover Aluminum tape Figure 4 104 Replacing Samsung fluorescent la...

Page 351: ...4 Replacement Procedures 4 30 Fluorescent Lamp 2 Remove the two screws securing the PCB Screw Screw Figure 4 105 Replacing Samsung fluorescent lamp SXGA 2 4 146 Satellite A20 Maintenance Manual 960 444 ...

Page 352: ...nt Lamp 4 Replacement Procedures 3 Remove the four screws from the top side of the chassis Screw Screw Screw Screw Figure 4 106 Replacing Samsung fluorescent lamp SXGA 3 Satellite A20 Maintenance Manual 960 444 4 147 ...

Page 353: ...Then remove the top chassis from the mold frame CAUTION When you release hooks on the top chassis be careful not to apply excessive force to the FL The FL can be damaged easily Side hook Side hook Bottom hook Figure 4 107 Replacing Samsung fluorescent lamp SXGA 4 4 148 Satellite A20 Maintenance Manual 960 444 ...

Page 354: ...escent Lamp 4 Replacement Procedures 5 Remove the panel assembly from the mold frame Panel assembly Mold frame Figure 4 108 Replacing Samsung fluorescent lamp SXGA 5 Satellite A20 Maintenance Manual 960 444 4 149 ...

Page 355: ...scent Lamp 6 Remove the two clips Then remove the five sheets prism sheet L U diffusion sheet LGP and reflection sheet Clip Clip Sheets Figure 4 109 Replacing Samsung fluorescent lamp SXGA 6 4 150 Satellite A20 Maintenance Manual 960 444 ...

Page 356: ...ement Procedures 7 Remove the two screws securing the lamp back cover Then remove the lamp back cover Lamp back cover Screw Screw Figure 4 110 Replacing Samsung fluorescent lamp SXGA 7 Satellite A20 Maintenance Manual 960 444 4 151 ...

Page 357: ...ment Procedures 4 30 Fluorescent Lamp 8 Remove the lamp wire from the wire guide of the mold frame Lamp wire Figure 4 111 Replacing Samsung fluorescent lamp SXGA 8 4 152 Satellite A20 Maintenance Manual 960 444 ...

Page 358: ...rescent Lamp 4 Replacement Procedures 9 Remove the lamp assembly from the mold frame Lamp assembly Mold frame Figure 4 112 Replacing Samsung fluorescent lamp SXGA 9 Satellite A20 Maintenance Manual 960 444 4 153 ...

Page 359: ...ent Procedures 4 30 Fluorescent Lamp 4 154 Satellite A20 Maintenance Manual 960 444 Assembling the 15 0 inch SXGA Samsung Fluorescent Lamp The assembly procedure is the reverse of the above disassembly procedure ...

Page 360: ...ule Be careful not to let dust or other foreign substances into the LCD module Disassembling the 15 0 inch SXGA Sharp Fluorescent Lamp 1 Turn the LCD module face down and remove the protection cover S A protection cover G B fixing tape C and fixing tape for lead wire C NOTE 1 Be careful not to damage the TCP or chips 2 Discard the tapes removed Do not reuse them A Protection cover S B Protection c...

Page 361: ...dures 4 30 Fluorescent Lamp 2 Remove the four screws on the sides Screw loosening torque 1 1kg cm Screw Screw Screw Screw Figure 4 114 Replacing Sharp fluorescent lamp SXGA 2 4 156 Satellite A20 Maintenance Manual 960 444 ...

Page 362: ...the bezel E E Bezel 1 Release the bezel from the four latches of the lamp cover 2 Release the two latches on the P chassis 3 Release the hook of the bezel from the lamp cover Side view Hook Figure 4 115 Replacing Sharp fluorescent lamp SXGA 3 Satellite A20 Maintenance Manual 960 444 4 157 ...

Page 363: ...he board and remove the FPC G Open the bent portion of the TCP of the board and remove the backlight Screw Screw Screw Screw G FPC Screw loosening torque 0 9kg cm Open the cap of the connector and remove the FPC Figure 4 116 Replacing Sharp fluorescent lamp SXGA 4 4 158 Satellite A20 Maintenance Manual 960 444 ...

Page 364: ...ent Lamp 4 Replacement Procedures Do not hold the edge Do not hold the edge Raise the board and make this condition Figure 4 117 Replacing Sharp fluorescent lamp SXGA 5 Satellite A20 Maintenance Manual 960 444 4 159 ...

Page 365: ... remove the LCD panel I from the backlight unit H NOTE Wear finger sacks or gloves during the work not to soil or scratch the LCD panel or backlight unit I LCD panel H Backlight unit Figure 4 118 Replacing Sharp fluorescent lamp SXGA 6 4 160 Satellite A20 Maintenance Manual 960 444 ...

Page 366: ... face down and remove the two screws D and lamp cover J NOTE Be careful not to scratch or soil the sheets H Backlight unit Screw loosening torque 1 1kg cm D Screw D Screw J Lamp cover Figure 4 119 Replacing Sharp fluorescent lamp SXGA 7 Satellite A20 Maintenance Manual 960 444 4 161 ...

Page 367: ... lens sheet L and light guide M NOTE The light guide and sheets are reused Be careful not to scratch or soil them Do not remove the reflection sheet under the light guide K Upper diffusion sheet L Lens sheet M Light guide Figure 4 120 Replacing Sharp fluorescent lamp SXGA 8 4 162 Satellite A20 Maintenance Manual 960 444 ...

Page 368: ...r double sided tapes N O P Q NOTE Discard the removed tapes Do not reuse them P Double sided tape 3 Q Double sided tape 4 N Double sided tape 1 O Double sided tape 2 Figure 4 121 Replacing Sharp fluorescent lamp SXGA 9 Satellite A20 Maintenance Manual 960 444 4 163 ...

Page 369: ...ace down and remove the lamp unit R from the P chassis CAUTION When removing the lamp unit be careful not to break the lamp or bend the reflection sheet P Chassis R Lamp unit Figure 4 122 Replacing Sharp fluorescent lamp SXGA 10 4 164 Satellite A20 Maintenance Manual 960 444 ...

Page 370: ...Sharp fluorescent lamp follow the steps below and refer to Figures 4 123 to 4 137 1 Stick the four double sided tapes N O P Q on the P chassis P Q O Standard for edge of P chassis Do not make the P chassis over this line 0 to 1 mm N Figure 4 123 Replacing Sharp fluorescent lamp SXGA 11 Satellite A20 Maintenance Manual 960 444 4 165 ...

Page 371: ...4 30 Fluorescent Lamp 2 Turn the backlight unit face down and install a new lamp unit R on the P chassis P chassis R Lamp unit Figure 4 124 Replacing Sharp fluorescent lamp SXGA 12 4 166 Satellite A20 Maintenance Manual 960 444 ...

Page 372: ... damage the reflection sheet Z Z Install the lamp unit without floating Install the reflection sheet as it is placed inside the reflector Install the lead wire into this groove Cross section drawing of Z Z Figure 4 125 Replacing Sharp fluorescent lamp SXGA 13 Satellite A20 Maintenance Manual 960 444 4 167 ...

Page 373: ...p 3 Install the lamp cover J on the backlight unit and secure it with the two screws J Lamp cover D Screw D Screw Screw tightening torque 0 9kg cm Figure 4 126 Replacing Sharp fluorescent lamp SXGA 14 4 168 Satellite A20 Maintenance Manual 960 444 ...

Page 374: ...ures 4 Install the light guide M on the backlight unit Insert the light guide straight not to deform the reflector M Light guide Backlight unit Figure 4 127 Replacing Sharp fluorescent lamp SXGA 15 Satellite A20 Maintenance Manual 960 444 4 169 ...

Page 375: ...ion sheet K on the backlight unit with light guide K Upper diffusion sheet L Lens sheet M Light guide Make sure there is no dust or scratch Do not make any sheet over the edge of P chassis Figure 4 128 Replacing Sharp fluorescent lamp SXGA 16 4 170 Satellite A20 Maintenance Manual 960 444 ...

Page 376: ...panel and backlight unit If any dust is found remove it with crepe tape or others which has no remaining of paste H Backlight unit I LCD panel Guide rib Guide rib Guide rib Guide rib Make sure the LCD panel is installed in the guide rib surely Figure 4 129 Replacing Sharp fluorescent lamp SXGA 17 Satellite A20 Maintenance Manual 960 444 4 171 ...

Page 377: ...secure it with the two screws Then bend the TCP attaching to the gate board with the two screws and insert the FPC G into the connector of the source board Do not hold the edge Do not hold the edge Figure 4 130 Replacing Sharp fluorescent lamp SXGA 18 4 172 Satellite A20 Maintenance Manual 960 444 ...

Page 378: ...htening torque 0 9kg cm Fold the source board Check the condition after mating Check the condition of the concave portion of the FPC and the outline of the connector Insert the FPC to the end There shall be no out of position in θ Lock surely the connector Poor mating Failure Out of position in θ Failure Figure 4 131 Replacing Sharp fluorescent lamp SXGA 19 Satellite A20 Maintenance Manual 960 444...

Page 379: ... the lamp cover and two latches on the P chassis E Bezel 2 Lean the bezel on the lamp cover without interference with the TCP 1 Hitch the hook of the bezel on the rib of the P chassis Side view Hook Lamp cover side Figure 4 132 Replacing Sharp fluorescent lamp SXGA 20 4 174 Satellite A20 Maintenance Manual 960 444 ...

Page 380: ...f the bezel and the rib of the P chassis Make sure of mating of the bezel and the latch of the P chassis Make sure of mating of the bezel and the latch of the P chassis Figure 4 133 Replacing Sharp fluorescent lamp SXGA 21 Satellite A20 Maintenance Manual 960 444 4 175 ...

Page 381: ...nt Procedures 4 30 Fluorescent Lamp 9 Secure the sides of the unit with the four screws Screw Screw Screw Screw Figure 4 134 Replacing Sharp fluorescent lamp SXGA 22 4 176 Satellite A20 Maintenance Manual 960 444 ...

Page 382: ...amp 4 Replacement Procedures 10 Stick the protection cover G B B Protection cover G Outline standard for the gate board Figure 4 135 Replacing Sharp fluorescent lamp SXGA 23 Satellite A20 Maintenance Manual 960 444 4 177 ...

Page 383: ... does not appear on the side of the module Do not make the tape over the top of the module 0 to 1 mm The tape MUST NOT appear on the display Make sure the lead wire is closely attached to the bezel D A Fit the cover according to the outline of the screw Stick to the side of the bezel Stick the fixing tape at the center of the module C 0 to 0 5 mm Figure 4 136 Replacing Sharp fluorescent lamp SXGA ...

Page 384: ...Maintenance Manual 960 444 4 179 0 to 1 mm 0 to 1 mm Standard for the outline of screw left and right Standard for the outline of board Make sure the edge of plastic resin is between 0 5 Edge of plastic resin Figure 4 137 Replacing Sharp fluorescent lamp SXGA 25 ...

Page 385: ...to figures 4 138 to 4 142 Peeling off the tapes and insulation sheets 1 Flip the module over and place it on a flat surface that is free of foreign objects 2 In the order 1 2 and 3 shown in Figure 4 138 remove the tape for fixing the FL tube cable two pieces of tape on the bezel that are close to the FL tube and the X PCB insulation sheet CAUTION 1 Use care not to damage the TAB 2 Leave the insula...

Page 386: ...remove the screws from the left and right hand sides of the module CAUTION To unfasten the screws use an insert bit of point size 0 for Philips screwdrivers 1 1 1 1 2 2 2 2 F940 2 i ƒ ƒxƒ PC GF13 a k r m ƒ ƒxƒ e k j Šüƒ ƒxƒ b t s h n m ƒ ƒx ƒ FL disposal label CAUTION label BL S N label Product label Label cautions for disposal of FL tubes Figure 4 139 Removing the screws Satellite A20 Maintenance...

Page 387: ...e sided tape from the cell at the reverse side of the bottom of the bezel and remove the bezel 4 Remove the double sided tape remaining at the bottom of the cell and on the reverse side of the bezel CAUTION Do not damage the TAB when releasing the latches on the upper area When removing the bezel gently remove the top double sided tape at the bottom of the surface of the bezel to prevent cell dama...

Page 388: ...the PCB 1 Spread out the PCB horizontally as shown in Figure 4 141 CAUTION Use care not to damage the TAB w o b a ð Ê çŠJ D 1 Open the X PCB from the reverse side Figure 4 141 Spreading out the PCB horizontally Satellite A20 Maintenance Manual 960 444 4 183 ...

Page 389: ...hree areas are bonded to the frame with the double sided tape as shown in Figure 4 142 one area is at the top and two areas are at the bottom of both sides Remove the cell gently taking care not to damage it Use care not to peel off the masking tape in the three areas on the cell ƒZƒ ð Í D Êƒe ƒv R ÓŠ Í ª µ È ª ç 1 Remove the cell by peeling off the three pieces of double sided tape Figure 4 142 R...

Page 390: ...ŠJŒû æ è z È Æ ƒe ƒv ªƒxƒ ƒ ŠJŒû æ è ƒe ƒv Ì Í Ýo µ Æ ƒxƒ ƒ ŠJŒû æ è i ƒe ƒv j 0 0 2 1 Œö O OD T Ì ÍˆÍ Å t é Æ ƒxƒ ƒ ŠJŒû æ è ƒxƒ ƒ Ê Reverse side of the bezel Requirements for attaching double sided tape The end of tape must not go beyond the opening of bezel Tape must not go beyond the opening of the bezel Double sided tape 4597 Sumitomo 3M Attach tape within tolerances from 0 0 to 0 5 from the ...

Page 391: ... Ÿ ƒe ƒv æ èã È Æ ƒtƒŒ ƒ ÌƒŠƒu É Ë Ä Ä é A The sheet must not be dislocatedfromthe frame The sheet must not be dislocatedfromthe frame The sheet must not be dislocatedfromthe frame The frame must not be overlaid with the prismsheet etc The frame must not be overlaid with the prismsheet etc Sheet retainingtape Align the tape with the rib of frame Theframe must not be overlaid The frame must not be ...

Page 392: ...mage Perform this check also for the reverse side of the cell Then install the cell of the PCB assembly in the backlight unit CAUTION Align the top left corner of the cell with the corresponding corner of the backlight unit as indicated by in Figure 4 145 Use care not to damage the TAB 2 1 Êƒe ƒv Æ é F R ÓŠ ã Ë Ä o b a t ƒZƒ ƒoƒbƒNƒ ƒC ƒg Cell of PCB Backlight Align the top left corner Remove the ...

Page 393: ...he TAB PCB 1 Fold down the TAB PCB toward the reverse side of the backlight unit as shown in Figure 4 146 CAUTION Use care not to damage the TAB 1 w o b a ð Ê ÉÜ è È D For the X PCB toward the reverse side Figure 4 146 Folding down the TAB 4 188 Satellite A20 Maintenance Manual 960 444 ...

Page 394: ...e and two latches on the bottom edge ƒ ƒbƒ Q ÓŠ L èD ƒ ƒbƒ T Š ð Í ß éD Ÿ É s a ð Í ß éD ƒP ƒuƒ ðƒLƒY Â È æ É ˆÓ ƒxƒ ƒ ðƒ ƒ ƒv ç Í ß éD ƒxƒ ƒ ÌŠO Éo È ÆD f m c b tÜ è È L èD ƒxƒ ƒ ÌŠO Éo È Æ ƒŠƒtƒŒƒNƒ Ü è È L èD 2 2 2 2 2 1 Next fit the bezel s edge close to the TAB Close the five latches First fit the bezel s edge close to the lamp Use care not to damage the cable The fold of GND cu must not go b...

Page 395: ...1 2 3 and 4 shown in Figure 4 148 CAUTION Fasten the screws in the orders shown in Figure 4 148 No loose fastening is allowed The tightening torque must not exceed 0 147N m 1 5kgf cm for all the eight screws For the Philips screwdrivers use an insert bit of point size 0 8 7 6 5 2 3 ƒl ƒWi l Q w QD Qj W ÓŠ µ ß é 4 1 Fasten the eight M2 2 2 Figure 4 148 Fixing the PCB and the bezel 4 190 Satellite A...

Page 396: ...ƒvF ƒ ƒW ƒ ƒ ð ÚˆÀ É é è Šî F ƒxƒ ƒ ç o È Æ è Šî F Attaching the insulation sheet Attach the sheet after removing slack The frame must not be overlaid with the PCB Align the sheet with the module s edge Align the sheet with the reflector s edge Align the sheet with the reflector s edge Align the sheet with the module s edge The tape edge must not protrude from the surface of the module The tape ed...

Page 397: ...her foreign substances into the LCD module To disassemble the 14 1 inch XGA Sharp fluorescent lamp follow the steps below and refer to Figures 4 150 to 4 154 1 Flip the module over and remove the protection cover S A protection cover G B aluminum tape C tape for lead fixing D retention tape H and aluminum shield K Loose shield tape I without removing Use care not to damage the TCP and chips Discar...

Page 398: ...asing torque is 0 1078N m 1 1kgf cm Figure 4 151 Removing the screws from the sides 3 Flip the module over again with the top of the module facing up and remove the two latches that are close to the lamp Latch Figure 4 152 Removing the latches close to the lamp Satellite A20 Maintenance Manual 960 444 4 193 ...

Page 399: ...ezel Peel off the tape for GND wire fixing J U shaped edge of the bezel Tape for ground wire fixing J Figure 4 153 Removing the bezel 5 Flip the bezel over and remove the two screws E and lamp cover F Then replace the lamp unit G with a new one Maximum allowed releasing torque is 0 1078N m 1 1kgf cm Figure 4 154 Removing the lamp cover 4 194 Satellite A20 Maintenance Manual 960 444 ...

Page 400: ... engaging pins Around the opening for extracting the lead the edge of the P chassis should go beyond the edge of lamp cover Maximum allowed tightening torque is 0 1176N m 1 2kgf cm Engaging pin Engaging pin Fold here Figure 4 155 Replacing the lamp unit 2 Fix the GND lead wire with the fixing tape Check that the guide rib is not overlaid with the panel After fitting the U shaped side of the bezel ...

Page 401: ...3 Fasten the five screws E on both sides Make sure that the two latches are fitting surely Maximum allowed tightening torque is 0 1176N m 1 2kgf cm Latch Figure 4 157 Fastening the screws on both sides 4 196 Satellite A20 Maintenance Manual 960 444 ...

Page 402: ...ver on the reverse side of the bezel Align a shorter side with the edge of the lamp cover When attaching the tape for lead fixing D Align a longer side with the marking on the lamp cover on the reverse side of the bezel Align a shorter side with the location where the head of the screw is covered When attaching the retention tape H Align both a longer and a shorter sides with the rectangular hole ...

Page 403: ...4 5 Upon completion of the assembly perform visual inspections as shown in Figure 4 159 Engagement Attachment Attachment Engagement Screw Screw Engagement Screw Engagement Attachment Engagement Engagement Attachment Engagement Engagement Deformation Damage Screw Figure 4 159 Visual inspections ...

Page 404: ... other foreign substances into the LCD module Disassembling the 14 1 inch XGA Samsung Fluorescent Lamp To disassemble the 14 1 inch XGA Samsung fluorescent lamp follow the steps below and refer to figures 4 160 to 4 167 1 Flip the LCD module over and remove the PCB cover and three pieces of tape CAUTION Use care not to damage the PCB PCB cover Wire tape Tape Tape 1 2 3 4 Figure 4 160 Removing the ...

Page 405: ...ndum 2 Remove the two screws for fixing the power supply board CAUTION Use care not to damage the PCB 1 2 Screw Screw Figure 4 161 Removing the two screws for fixing the power supply board 4 200 Satellite A20 Maintenance Manual 960 444 ...

Page 406: ...ove the upper chassis from the frame There are six hooks at the top four hooks on each of the left and right hand sides and four hooks at the bottom 1st 2nd 2nd 3rd Top Hook Side Hook Bottom Hook Figure 4 162 Releasing the 18 hooks Satellite A20 Maintenance Manual 960 444 4 201 ...

Page 407: ...ndum 4 Remove the panel assembly from the backlight assembly CAUTION Use care not to damage the TCP during working Panel assembly Backlight assembly Figure 4 163 Removing the panel assembly 4 202 Satellite A20 Maintenance Manual 960 444 ...

Page 408: ...ocedures 5 Remove the two clips 6 Remove these Prism sheet Diffuser sheet Light guide plate LGP Reflective sheet Remove the clip Remove the clip Sheets Figure 4 164 Removing the panel assembly Satellite A20 Maintenance Manual 960 444 4 203 ...

Page 409: ...nt Procedures 4 31 Addendum 7 Remove the two screws for fixing the back cover of the FL tube Screws Figure 4 165 Removing the screws for fixing the FL tube back cover 4 204 Satellite A20 Maintenance Manual 960 444 ...

Page 410: ...ent Lamp 4 Replacement Procedures 8 Disconnect the ground wire of the FL tube from the frame Frame GND wire Hot wire Figure 4 166 Disconnecting the FL tube ground wire Satellite A20 Maintenance Manual 960 444 4 205 ...

Page 411: ...4 Replacement Procedures 4 31 Addendum 9 Remove the FL tube from the frame FL Figure 4 167 Removing the FL tube 4 206 Satellite A20 Maintenance Manual 960 444 ...

Page 412: ... the FL tube with the two screws 4 Attach these Reflective sheet Light guide plate LGP Diffuser sheet Prism sheet 5 Fasten the two clips 6 Place the panel assembly on the correct location in the backlight assembly 7 Place the upper chassis on the frame Fit the hooks into the holes There are four hooks at the bottom four hooks on each of the left and right hand sides and six hooks at the top 8 Fix ...

Page 413: ... tape cover tape 1 Remove the tape adhesive 1 used for the B L wire fixing CAUTION Pressure or stress should not be given on the B L wire 2 Remove the tape adhesive 2 used for the top case fixing 3 Remove the cover shield C 3 CAUTION Pressure or stress should not be given on control the PCB Usage of gloves with the anti electric discharge coating is recommended To eliminate possible damage on circ...

Page 414: ...rocedures Tape Adhesive 7250L 0026U Cover Shield C 3550L 0281A Cover Shield G 7250L 0154B Tape Adhesive 7250L 0026N Tape Adhesive 7250L 0026K Figure 4 168 Removing the outside tape cover tape Satellite A20 Maintenance Manual 960 444 4 209 ...

Page 415: ...t 8 Remove the top case 3 CAUTION Pressure or stress should not be given on the top case and gate TCP 9 Remove the screw and cover assembly 4 CAUTION Pressure or stress should not be given on the source TCP Maximum value of torque with screw should be below 2 0kgf cm Cover Assembly 3551L 0027A Screw 1STZL 0001H Screw 1STZL 0001H Control PCB 6870L C017 Case Assembly 3111L 00070A Figure 4 169 Removi...

Page 416: ...Pressure or stress should not be given on the PCB and TCP during removing double tape 11 Remove the gate PCB 2 CAUTION Pressure or stress should not be given on the PCB and TCP during removing double tape Source PCB Gate PCB Figure 4 170 Removing the source PCB and gate PCB Satellite A20 Maintenance Manual 960 444 4 211 ...

Page 417: ...the sheets and light guide 3 CAUTION No penetration of foreign body is indispensable with no scratch on the surface of each sheet 15 Remove the screw and cover bottom 4 CAUTION Maximum value of torque with screw should be below 2 0kgf cm 16 Disconnect the low voltage wire from mold frame and disassembly of the lamp assembly from mold frame 5 CAUTION Pressure or stress should not be given on this w...

Page 418: ...Procedures Board Assembly 6060L C017 Sheets LGP Screw Screw Double Tape 7250L 0025E Tape Pad Figure 4 171 Removing the board assembly tape pad sheet light guide cover bottom and lamp assembly Satellite A20 Maintenance Manual 960 444 4 213 ...

Page 419: ...h the mold frame 2 CAUTION Pressure or stress should not be given on the wire during this process 3 Connect the cover bottom with the double tape 3 grounding 4 Connect the kapton tape with supporter main 4 protection of wire G 5 Fix the cover bottom and screw 5 CAUTION Maximum value of torque with screw should be below 2 0kgf cm 6 Attach the sheets and light guide 6 CAUTION No penetration of forei...

Page 420: ...y 6060L C017 Sheets and LGP Kapton Tape 7250L 0026Q Screw Screw Double Tape 7250L 0025E Tape Pad Figure 4 172 Attaching the double tape lamp assembly cover bottom sheets light guide tape adhesive and board assembly Satellite A20 Maintenance Manual 960 444 4 215 ...

Page 421: ...gate PCB 9 Attach the source PCB 1 CAUTION Stress should not be given on the TCP 10 Attach the gate PCB 2 CAUTION Stress should not be given on the TCP Source PCB Gate PCB Figure 4 173 Attaching the source PCB and gate PCB 4 216 Satellite A20 Maintenance Manual 960 444 ...

Page 422: ...ure should not be given on the gate TCP 13 Attach the control PCB 3 CAUTION Move the control PCB to the right 14 Attach the FPC cable 4 used for the control PCB connecting CAUTION Pressure or stress should not be given on the FPC cable Screw 1STZL 0001H Case Assembly 3111L 00070A Control PCB 6870L C017 Screw 1STZL 0001H Figure 4 174 Attaching the cover bottom screw top case control PCB and FPC Sat...

Page 423: ...d 3 CAUTION Pressure or stress should not be given on the control PCB Usage of the gloves with anti electric discharge coating is recommended to eliminate possible damage on the circuits occurred by the ESC 18 Attach the cover shield 4 CAUTION Pressure or stress should not be given on the gate PCB 19 Attach the tape adhesive 5 6 used for the top case fixing CAUTION Pressure or stress should not be...

Page 424: ...dhesive 7250L 0026U Cover Shield C 3550L 0281A Cover Shield G 7250L 0154B Tape Adhesive 7250L 0026K Tape Adhesive 7250L 0026N Tape Adhesive 7250L 0050A Figure 4 175 Attaching the outside tape and cover shield Satellite A20 Maintenance Manual 960 444 4 219 ...

Page 425: ...06GHz is used Set the SLIDE SWITCH to the position of silk printed 3 0G which is on the BATTERY PACK side of the system board 2 When a CPU other than 3 06GHz 2 53 2 66 2 80GHz is used Set the SLIDE SWITCH to the position of silk printed OTHER which is on the CPU side of the system board NOTE The SLIDE SWITCH is set to OTHER by default NOTE The position of the SLIDE SWITCH S1060 can still be change...

Page 426: ...Appendices ...

Page 427: ...Appendices App ii Satellite A20 Maintenance Manual 960 444 ...

Page 428: ...tor 4 pin C 8 C 6 PJ5003 CRT Interface Connector 15 pin C 8 C 7 PJ1009 HDD Interface Connector 44 pin C 9 C 8 PJ1117 Select Bay Interface Connector 72 pin C 10 C 9 PJ1512 PC Card Interface Connector 150 pin C 11 C 10 PJ123 Keyboard Interface Connector 34 pin C 13 C 11 PJ2004 Touch Pad Interface Connector 8 pin C 13 C 12 PJ2025 Membrane Interface Connector 24 pin C 14 C 13 PJ2026 Switch Board Inter...

Page 429: ...r 3 pin C 22 C 31 PJ8770 Fan 1 Interface Connector 3 pin C 22 C 32 PJ326 Debug port Connector 4 pin C 22 Sound Board C 23 C 33 PJ2901 System Board 1 Interface Connector 50 pin C 23 C 34 PJ2902 System Board 2 Interface Connector 18 pin C 24 C 35 PJ1600 SD Card Interface Connector 12 pin C 24 C 36 PJ3000 External Microphone Connector 6 pin C 24 C 37 PJ3001 Headphone Connector 6 pin C 25 C 38 PJ3004 ...

Page 430: ...5 Spanish SP Keyboard E 3 E 6 Italian IT Keyboard E 3 E 7 Scandinavian SC Keyboard E 4 E 8 Swiss German SL Keyboard E 4 E 9 Canadian CS Keyboard E 5 Appendix F Wiring Diagram F 1 F 1 Parallel Port Wraparound Connector F 1 F 2 RJ45 Wraparound Connector F 1 Appendix G BIOS Rewrite Procedures G 1 Appendix H EC KBC Rewrite Procedures H 1 Appendix I Reliability I 1 Satellite A20 Maintenance Manual 960 ...

Page 431: ...gure B 5 USB board layout front back 9 Figure B 6 Switch board layout front back 10 Figure E 1 US keyboard E 1 Figure E 2 UK keyboard E 1 Figure E 3 GR keyboard E 2 Figure E 4 FR keyboard E 2 Figure E 5 SP keyboard E 3 Figure E 6 IT keyboard E 3 Figure E 7 SC keyboard E 4 Figure E 8 SL keyboard E 4 Figure E 9 CS keyboard E 5 App vi Satellite A20 Maintenance Manual 960 444 ...

Page 432: ... C 9 PC Card interface connector pin assignments 150 pin C 11 Table C 10 Keyboard interface connector pin assignments 34 pin C 13 Table C 11 Touch pad interface connector pin assignments 8 pin C 13 Table C 12 Membrane interface connector pin assignments 24 pin C 14 Table C 13 Switch board interface connector pin assignments 10 pin C 14 Table C 14 USB board interface connector pin assignments 18 pi...

Page 433: ...em board 2 interface connector pin assignments 18 pin C 24 Table C 35 SD card interface connector pin assignments 12 pin C 24 Table C 36 External microphone connector pin assignments 6 pin C 24 Table C 37 Headphone connector pin assignments 6 pin C 25 Table C 38 Line IN connector pin assignments 6 pin C 25 Table C 39 MDC interface connector pin assignments 30 pin C 25 Table C 40 System board inter...

Page 434: ... precautions when handling the LCD module 1 When installing the LCD module in the LCD cover be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained 2 For the LCD module do not force the module into place because stress can affect its performance Also the panel s polarized surface is easily scarred so be carefully when handling it Satellite A20 Maintena...

Page 435: ...nd wipe it again If the surface is very dirty we recommend a CRT cleaning agent Apply the agent to a cloth and then wipe the panel s surface Do not apply cleanser directly to the panel CRT Cleaner 4 If water or other liquid is left on the panel s surface for a long period it can change the screen s tint or stain it Be sure to quickly wipe off any liquid A 2 Satellite A20 Maintenance Manual 960 444...

Page 436: ... not to drop it or let it strike a hard object which could cause breakage or cracks 6 CMOS LSI circuits are used in the module so guard against damage from electrostatic discharge Be sure to wear a wrist or ankle ground when handling the module Satellite A20 Maintenance Manual 960 444 A 3 ...

Page 437: ...dule to direct sunlight or strong ultraviolet rays for long periods 8 Do not store the module at temperatures below specifications Cold can cause the liquid crystals to freeze lose their elasticity or otherwise suffer damage A 4 Satellite A20 Maintenance Manual 960 444 ...

Page 438: ...ule Disassembly can cause malfunctions 10 If you transport the module do not use packing material that contains epoxy resin amine or silicon glue alcohol or oxime These materials can release gas that can damage the panel s polarization Satellite A20 Maintenance Manual 960 444 A 5 ...

Page 439: ...Appendices Appendix A Handling the LCD module A 6 Satellite A20 Maintenance Manual 960 444 ...

Page 440: ...Appendix B Board Layout Appendices Appendix B Board Layout B 1 System Board Front View Figure B 1 System board layout front Satellite A20 Maintenance Manual 960 444 B 1 ...

Page 441: ...l I F connector L PJ5600 LCD I F connector green M PJ5601 LCD I F connector white N PJ8770 Sub FAN I F connector O PJ8800 DC IN connector P PJ9500 FIR board FSNAS I F connector Q PJ9510 Sound board FSNAS I F connector R PJ9511 Sound board FSNAS I F connector S PJ9512 Right Speaker I F connector T PJ9513 Left Speaker I F connector U PJ9999 RTC battery I F connector V F5602 3 15A fuse for FL W F5603...

Page 442: ...Appendix B Board Layout Appendices B 2 System Board Back View Figure B 2 System board layout back Satellite A20 Maintenance Manual 960 444 B 3 ...

Page 443: ...02 USB Power Switch MAX1922ESA N IC4603 USB Power Switch MAX1922ESA O PJ1800 HDD I F connector P PJ1820 ODD I F connector Q PJ2110 PC Card Slot R PJ3510 Parallel Port S PJ4100 RJ 45 LAN Jack T PJ4600 USB connector U PJ5620 CRT I F connector V PJ5655 TV connector W PJ8810 Battery I F connector X PJ9900 FAN connector Y F8810 15A fuse for battery Z X1000 14 31818MHz clock for clock generator AA X1260...

Page 444: ...dices B 3 Sound Board Front View Figure B 3 Sound board layout front Table B 3 Sound board layout front Mark Number Name A IC6000 Sound CODEC AD1981B B X6000 24 576MHz clock for AD1981B Satellite A20 Maintenance Manual 960 444 B 5 ...

Page 445: ...Appendices Appendix B Board Layout B 4 Sound Board Back View Figure B 4 Sound board layout back B 6 Satellite A20 Maintenance Manual 960 444 ...

Page 446: ...30 SD Card Slot B PJ3010 MDC I F connector C PJ6000 External Microphone jack D PJ6001 Line In jack E PJ6004 Headphone jack F PJ9600 System board FSNAM I F connector G PJ9601 System board FSNAM I F connector H DS2120 SD Card LED I VR6000 Volume dial Satellite A20 Maintenance Manual 960 444 B 7 ...

Page 447: ...44 B 5 USB Board Front and Back View Figure B 5 USB board layout front back Table B 5 USB board ICs and connectors front back Mark Number Name A PJ9610 System board FSNAM I F connector B IC3520 FIR module C DS3270 Wireless communication LED D S3270 Wireless communication switch ...

Page 448: ...GND 16 GND 17 SDQ04R B2P I O 18 SDQ03R B2P I O 19 SDQ13R B2P I O 20 SDQ14R B2P I O 21 2R5 B2V 22 2R5 B2V 23 SDQ08R B2P I O 24 SDQ10R B2P I O 25 SDQS1R B2P I O 26 SDQM1R B2P O 27 GND 28 GND 29 SDQ09R B2P I O 30 SDQ11R B2P I O 31 SDQ12R B2P I O 32 SDQ15R B2P I O 33 2R5 B2V 34 2R5 B2V 35 SCK1 P2P O 36 2R5 B2V 37 SCK1 P2N O 38 GND 39 GND 40 GND 41 SDQ20R B2P I O 42 SDQ18R B2P I O 43 SDQ21R B2P I O 44 ...

Page 449: ... 86 NC 87 GND 88 GND 89 SCK0 P2P O 90 GND 91 SCK0 P2N O 92 2R5 B2V 93 2R5 B2V 94 2R5 B2V 95 SCKE3R B2P O 96 SCKE2R B2P O 97 NC 98 NC 99 SMA12R B2P O 100 SMA11R B2P O 101 SMA09R B2P O 102 SMA08R B2P O 103 GND 104 GND 105 SMA07R B2P O 106 SMA06R B2P O 107 SMA05R B2P O 108 SMA04R B2P O 109 SMA03R B2P O 110 SMA02R B2P O 111 SMA01R B2P O 112 SMA00R B2P O 113 2R5 B2V 114 2R5 B2V 115 SMA10R B2P O 116 SBS...

Page 450: ...R B2P I O 155 2R5 B2V 156 2R5 B2V 157 2R5 B2V 158 SCK2 P2N O 159 GND 160 SCK2 P2P O 161 GND 162 GND 163 SDQ48R B2P I O 164 SDQ50R B2P I O 165 SDQ52R B2P I O 166 SDQ54R B2P I O 167 2R5 B2V 168 2R5 B2V 169 SDQS6R B2P I O 170 SDQM6R B2P O 171 SDQ53R B2P I O 172 SDQ51R B2P I O 173 GND 174 GND 175 SDQ49R B2P I O 176 SDQ55R B2P I O 177 SDQ61R B2P I O 178 SDQ62R B2P I O 179 2R5 B2V 180 2R5 B2V 181 SDQ56R...

Page 451: ...5 B2V 23 SDQ08R B2P I O 24 SDQ10R B2P I O 25 SDQS1R B2P I O 26 SDQM1R B2P O 27 GND 28 GND 29 SDQ09R B2P I O 30 SDQ11R B2P I O 31 SDQ12R B2P I O 32 SDQ15R B2P I O 33 2R5 B2V 34 2R5 B2V 35 SCK4 P2P O 36 2R5 B2V 37 SCK4 P2N O 38 GND 39 GND 40 GND 41 SDQ20R B2P I O 42 SDQ18R B2P I O 43 SDQ21R B2P I O 44 SDQ19R B2P I O 45 2R5 B2V 46 2R5 B2V 47 SDQS2R B2P I O 48 SDQM2R B2P O 49 SDQ16R B2P I O 50 SDQ23R ...

Page 452: ... 101 SMA09R B2P O 102 SMA08R B2P O 103 GND 104 GND 105 SMA07R B2P O 106 SMA06R B2P O 107 SMA05R B2P O 108 SMA04R B2P O 109 SMA03R B2P O 110 SMA02R B2P O 111 SMA01R B2P O 112 SMA00R B2P O 113 2R5 B2V 114 2R5 B2V 115 SMA10R B2P O 116 SBS1R B2P O 117 SBS0R B2P O 118 SRASR B2N O 119 SWER B2N O 120 SCASR B2N O 121 SCS0R B2N O 122 SCS1R B2N O 123 NC 124 NC 125 GND 126 GND 127 SDQ37R B2P I O 128 SDQ35R B...

Page 453: ... GND 163 SDQ48R B2P I O 164 SDQ50R B2P I O 165 SDQ52R B2P I O 166 SDQ54R B2P I O 167 2R5 B2V 168 2R5 B2V 169 SDQS6R B2P I O 170 SDQM6R B2P O 171 SDQ53R B2P I O 172 SDQ51R B2P I O 173 GND 174 GND 175 SDQ49R B2P I O 176 SDQ55R B2P I O 177 SDQ61R B2P I O 178 SDQ62R B2P I O 179 2R5 B2V 180 2R5 B2V 181 SDQ56R B2P I O 182 SDQ59R B2P I O 183 SDQS7R B2P I O 184 SDQM7R B2P O 185 GND 186 GND 187 SDQ57R B2P ...

Page 454: ... 6 PDD09 P3P I O 7 PDD05 P3P I O 8 PDD10 P3P I O 9 PDD04 P3P I O 10 PDD11 P3P I O 11 PDD03 P3P I O 12 PDD12 P3P I O 13 PDD02 P3P I O 14 PDD13 P3P I O 15 PDD01 P3P I O 16 PDD14 P3P I O 17 PDD00 P3P I O 18 PDD15 P3P I O 19 GND 20 NC 21 PDDREQ P3P I 22 GND 23 PDIOW P3N O 24 GND 25 PDIOR P3N O 26 GND 27 PIORDY P3P I 28 GND 29 PDDACK P3N O 30 GND 31 IRQ14 P3P I 32 NC 33 PDA1 P3P O 34 NC 35 PDA0 P3P O 3...

Page 455: ...SDD12 E5P I O 15 SDD03 E5P I O 16 SDD13 E5P I O 17 SDD02 E5P I O 18 SDD14 E5P I O 19 SDD01 E5P I O 20 SDD15 E5P I O 21 SDD00 E5P I O 22 SDDREQ E5P I 23 GND 24 SDIOR E3N O 25 SDIOW E3N O 26 GND 27 SIORDY E5P I 28 SDDACK E3N O 29 IRQ15 E5P I 30 NC 31 SDA1 E3P O 32 NC 33 SDA0 E3P O 34 SDA2 E3P O 35 SDCS1 E3N O 36 SDCS3 E3N O 37 SDASP E5N I O 38 CD E5V 39 CD E5V 40 CD E5V 41 CD E5V 42 CD E5V 43 GND 44...

Page 456: ...AD18 BYP I O 23 ACAD20 BYP I O 24 ACAD21 BYP I O 25 ACAD22 BYP I O 26 ACAD23 BYP I O 27 ACAD24 BYP I O 28 ACAD25 BYP I O 29 ACAD26 BYP I O 30 ACAD27 BYP I O 31 ACAD29 BYP I O 32 ACD02 BYP I O 33 ACCLKR BYN I O 34 GND 35 GND 36 ACCD1 B3N O 37 ACAD02 BYP I O 38 ACAD04 BYP I O 39 ACAD06 BYP I O 40 ACD14 BYP I O 41 ACAD08 BYP I O 42 ACAD10 BYP I O 43 ACVS1 B3P I O 44 ACAD13 BYP I O 45 ACAD15 BYP I O 4...

Page 457: ... 23 GND 24 B3V 25 X33MPC P3P I 26 PCIRST S3N O 27 GND 28 P3V 29 PREQ2 P3N O 30 PGNT2 P3N O 31 P3V 32 GND 33 AD31 P3P I O 34 PME S3N O 35 AD29 P3P I O 36 NC 37 GND 38 AD30 P3P I O 39 AD27 P3P I O 40 P3V 41 AD25 P3P I O 42 AD28 P3P I O 43 NC 44 AD26 P3P I O 45 CBE3 P3N I O 46 AD24 P3P I O 47 AD23 P3P I O 48 AD27 P3P I O 49 GND 50 GND 51 AD21 P3P I O 52 AD22 P3P I O 53 AD19 P3P I O 54 AD20 P3P I O 55...

Page 458: ... 77 GND 78 AD13 P3P I O 79 AD12 P3P I O 80 AD11 P3P I O 81 AD10 P3P I O 82 GND 83 GND 84 AD09 P3P I O 85 AD08 P3P I O 86 CBE0 P3N O 87 AD07 P3P I O 88 P3V 89 P3V 90 AD06 P3P I O 91 AD05 P3P I O 92 AD04 P3P I O 93 NC 94 AD02 P3P I O 95 AD03 P3P I O 96 AD00 P3P I O 97 P5V 98 NC 99 AD01 P3P I O 100 NC 101 GND 102 GND 103 NC 104 GND 105 NC 106 NC 107 NC 108 NC 109 NC 110 NC 111 NC 112 NC 113 GND 114 G...

Page 459: ...230 Keyboard Interface Connector 34 pin Table C 9 Keyboard interface connector pin assignments 34 pin Pin No Signal name I O Pin No Signal name I O 1 NUMLED P5N O 2 ARWLED P5N O 3 CAPLED P5N O 4 P5V 5 KBSC00 S3N O 6 KBSC01 S3N O 7 KBSC02 S3N O 8 KBSC03 S3N O 9 KBSC04 S3N O 10 KBSC05 S3N O 11 KBSC06 S3N O 12 KBRT00 S3N I 13 KBSC07 S3N O 14 KBSC08 S3N O 15 KBSC09 S3N O 16 KBRT01 S3N I 17 KBRT02 S3N ...

Page 460: ...O 6 IPDDAT P5P I O 7 P5V 8 P5V C 11 PJ3260 Membrane interface Connector 24 pin Table C 11 Membrane interface connector pin assignments 24 pin Pin No Signal name I O Pin No Signal name I O 1 GND 2 MODBTN S3N O 3 CDPREV S5N I 4 CDNEXT S5N I 5 S5V 6 CDMODE S3P I 7 MP3MOD S3P I 8 S5V 9 DCINOR S5N I 10 DCINGR S5N I 11 S5V 12 PWLEOR S3P I 13 PWLEGR S3P I 14 BAT1OR S5N I 15 BAT1GR S5N I 16 S5V 17 NC 18 P...

Page 461: ...DB02 P5P I O 5 PDB03 P5P I O 6 PDB04 P5P I O 7 PDB05 P5P I O 8 PDB06 P5P I O 9 PDB07 P5P I O 10 ACK P5N O 11 BUSY P5P O 12 PE P5P O 13 SELCT P5P O 14 AUTFD P5N O 15 ERROR P5N O 16 PINIT P5N O 17 SLIN P5N O 18 GND 19 GND 20 GND 21 GND 22 GND 23 GND 24 GND 25 GND C 13 PJ4100 Network Interface Connector 8 pin Table C 13 Network interface connector pin assignments 8 pin Pin No Signal name I O Pin No S...

Page 462: ...GND B1 USBP0V E5V I B2 USBDM3 B3N O B3 USBDP3 B3P I O B4 GND C1 USBP1V E5V I C2 USBDM5 B3N O C3 USBDP5 B3P I O C4 GND C 15 PJ5600 LCD 0 Interface Connector 20 pin Table C 15 LCD 0 interface connector pin assignments 20 pin Pin No Signal name I O Pin No Signal name I O 1 FL P5V 2 FL P5V 3 FL P5V 4 BRT0 P5P O 5 BRT1 P5P O 6 BRT2DA S3P O 7 GND 8 GND 9 GND 10 GND 11 GND 12 GND 13 GND 14 GND 15 GND 16 ...

Page 463: ... B3N O 14 TXDT4 B3P O 15 TXDT5 B3N O 16 TXDT5 B3P O 17 TXDT6 B3N O 18 TXDT6 B3P O 19 GND 20 GND C 17 PJ5620 CRT Interface Connector 15 pin Table C 17 CRT interface connector pin assignments 15 pin Pin No Signal name I O Pin No Signal name I O 1 CRTRED BXP O 2 CRTGRN BXP O 3 CRTBLU BXP O 4 NC 5 GND 6 GND 7 GND 8 GND 9 DDC P5V 10 GND 11 NC 12 DDCSDA B3P I O 13 HSYNC B3P I O 14 VSYNC B3P I O 15 DDCSC...

Page 464: ... ADPDC 4 ADPDC C 21 PJ8810 1st Battery Connector 10 pin Table C 21 1st Battery connector pin assignments 10 pin Pin No Signal name I O Pin No Signal name I O 1 PVBL1 2 BTMP1 I 3 PVBL1 4 S5V 5 PSCL S5P I O 6 PSDA S5P I O 7 GND 8 DBT10V S5N I 9 GND 10 GND C 22 PJ9500 FSNAF Board Interface Connector 18 pin Table C 22 FSNAF board interface connector pin assignments 18 pin Pin No Signal name I O Pin No...

Page 465: ...d Interface Connector 18 pin Table C 23 FSNAS board interface connector pin assignments 18 pin Pin No Signal name I O Pin No Signal name I O 1 P3V 2 P3V 3 P3V 4 NC 5 B3V 6 B3V 7 SNDON S5N O 8 GND 9 NC 10 SND GND 11 SND GND 12 SND GND 13 SND GND 14 PVON S5P O 15 SND E5V 16 SND E5V 17 SND E5V 18 SND E5V ...

Page 466: ...6 GND 17 X14SND P3P I 18 GND 19 M97SY1 P3P I 20 M97OT1 P3P I 21 M97RS1 S3N O 22 GND 23 X97BC2 P3P I 24 GND 25 M97IN1 P3P I 26 M97IN2 B3P I 27 M97OT2 P3P I 28 M97SY2 P3P I 29 M97RS2 S3N O 30 GND 31 SNDMUT S3N O 32 AMPSD S3N O 33 OZPVEN S5P O 34 CAUDIO B3P I 35 ATBEEP B3P I 36 GND 37 SDAT0 B3P I O 38 SDAT1 B3P I O 39 SDAT2 B3P I O 40 SDAT3 B3P I O 41 GND 42 SDCMD B3P I O 43 SDWP B3P I 44 SDCD B3N O ...

Page 467: ...name I O Pin No Signal name I O 1 SPKOTL EXP O 2 SPKOTL EXN O C 27 PJ9900 Fan 1 Interface Connector 3 pin Table C 27 Fan 1 interface connector pin assignments 3 pin Pin No Signal name I O Pin No Signal name I O 1 P5V I 2 GND 3 FANG0 P3P O C 28 PJ9999 RTC Battery Connector 2 pin Table C 28 RTC Battery connector pin assignments 2 pin Pin No Signal name I O Pin No Signal name I O 1 R3V 2 GND ...

Page 468: ... 5 SDCLK B3P O 6 GND 7 SDAT0 B3P I O 8 SDAT1 B3P I O 9 SDAT2 B3P I O 10 SDCD B3N I 11 SDWP B3P I 12 GND C 30 PJ3010 MDC Interface Connector 30 pin Table C 30 MDC interface connector pin assignments 30 pin Pin No Signal name I O Pin No Signal name I O 1 NC 2 GND 3 GND 4 PHONE BXN I 5 NC 6 NC 7 NC 8 GND 9 NC 10 NC 11 NC 12 NC 13 NC 14 NC 15 GND 16 MDC B3V 17 B3V 18 NC 19 GND 20 GND 21 NC 22 M97SY2 P...

Page 469: ... 1 A GND 2 MICIN PXP O 3 REFV P2V 4 A GND 5 NC 6 A GND C 32 PJ6001 Line IN Connector 6 pin Table C 32 Line IN connector pin assignments 6 pin Pin No Signal name I O Pin No Signal name I O 1 A GND 2 LININL PXP O 3 LININR PXP O 4 NC 5 NC 6 NC C 33 PJ6004 Headphone Connector 6 pin Table C 33 Headphone connector pin assignments 6 pin Pin No Signal name I O Pin No Signal name I O 1 A GND 2 HEDL EXP O 3...

Page 470: ...PKOTL EXN O 10 SPKOTL EXN O 11 CD GND 12 CDAUDR EXP I 13 CD GND 14 CDAUDL EXP I 15 CD GND 16 GND 17 X14SND P3P O 18 GND 19 M97SY1 P3P O 20 M97OT1 P3P O 21 M97RS1 S3N O 22 GND 23 X97BIC P3P I O 24 GND 25 M97IN1 P3P I 26 M97IN2 B3P I 27 M97OT2 P3P O 28 M97SY2 P3P O 29 M97RS2 S3N O 30 GND 31 SNDMUT S3N O 32 AMPSD S3N O 33 OZPVEN S3N I 34 CAUDIO B3P O 35 ATBEEP B3P I 36 GND 37 SDAT0 P3P I O 38 SDAT1 P...

Page 471: ...2 Interface Connector 18 pin Table C 35 Sound board 2 interface connector pin assignments 18 pin Pin No Signal name I O Pin No Signal name I O 1 P3V 2 P3V 3 P3V 4 NC 5 B3V 6 B3V 7 SNDON S5N O 8 GND 9 NC 10 SND GND 11 SND GND 12 SND GND 13 SND GND 14 PVON S5P O 15 SND E5V 16 SND E5V 17 SND E5V 18 SND E5V ...

Page 472: ...d 2 Interface Connector 18 pin Table C 36 System Board 2 interface connector pin assignments 18 pin Pin No Signal name I O Pin No Signal name I O 1 S3V 2 BTSWON S3P 3 P5V 4 BTLED S3P 5 GND 6 GND 7 FIRMDL P3N I 8 FIR GND 9 FIR GND 10 FIR GND 11 FIR GND 12 IRTX P3P I 13 IRMODE P3P 14 IRRX P3N 15 P3V 16 P3V 17 P3V 18 P3V ...

Page 473: ...Appendices Apx C Pin Assignments C 26 Satellite A20 Maintenance Manual 960 444 ...

Page 474: ... 1E F0 1E 04 3 04 84 26 F0 26 05 4 05 85 25 F0 25 06 5 06 86 2E F0 2E 07 6 07 87 36 F0 36 08 7 08 88 3D F0 3D 2 09 8 09 89 3E F0 3E 2 10 9 0A 8A 46 F0 46 2 11 0 0B 8B 45 F0 45 12 _ 0C 8C 4E F0 4E 13 0D 8D 55 F0 55 15 BkSp 0E 8E 66 F0 66 16 Tab 0F 8F 0D F0 0D 17 Q 10 90 15 F0 15 18 W 11 91 1D F0 1D 19 E 12 92 24 F0 24 20 R 13 93 2D F0 2D 21 T 14 94 2C F0 2C 22 Y 15 95 35 F0 35 23 U 16 96 3C F0 3C 2...

Page 475: ...3 D 20 A0 23 F0 23 34 F 21 A1 2B F0 2B 35 G 22 A2 34 F0 34 36 H 23 A3 33 F0 33 37 J 24 A4 3B F0 3B 2 38 K 25 A5 42 F0 42 2 39 L 26 A6 4B F0 4B 2 40 27 A7 4C F0 4C 2 41 28 A8 52 F0 52 43 Enter 1C 9C 5A F0 5A 3 44 Shift L 2A AA 12 F0 12 45 No 102 key 56 D6 61 F0 61 46 Z 2C AC 1A F0 1A 47 X 2D AD 22 F0 22 48 C 2E AE 21 F0 21 49 V 2F AF 2A F0 2A 50 B 30 B0 32 F0 32 51 N 31 B1 31 F0 31 52 M 32 B2 3A F0...

Page 476: ...Del E0 53 E0 D3 E0 71 E0 F0 71 1 79 E0 4B E0 CB E0 6B E0 F0 6B 1 80 Home E0 47 E0 C7 E0 6C E0 F0 6C 1 81 End E0 4F E0 CF E0 69 E0 F0 69 1 83 E0 48 E0 C8 E0 75 E0 F0 75 1 84 E0 50 E0 D0 E0 72 E0 F0 72 1 85 PgUp E0 49 E0 C9 E0 7D E0 F0 7D 1 86 PgDn E0 51 E0 D1 E0 7A E0 F0 7A 1 89 E0 4D E0 CD E0 74 E0 F0 74 1 110 Esc 01 81 76 F0 76 112 F1 3B BB 05 F0 05 113 F2 3C BC 06 F0 06 114 F3 3D BD 04 F0 04 115...

Page 477: ...8 07 F0 07 3 124 PrintSc 6 6 6 6 6 126 Pause 7 7 7 7 7 202 Fn 4 203 Win E0 5B E0 DB E0 1F E0 F0 1F 204 App E0 5D E0 DD E0 2F E0 F0 2F Notes 1 Scan codes differ by mode 2 Scan codes differ by overlay function 3 Combined with the Fn key makes different codes 4 Fn key does not generate a code by itself 5 This key corresponds to key No 42 in a 102 key model 6 Refer to Table D 6 No 124 key scan code 7 ...

Page 478: ... F0 12 E0 69 E0 F0 69 E0 12 83 E0 AA E0 48 E0 C8 E0 2A E0 F0 12 E0 75 E0 F0 75 E0 12 84 E0 AA E0 50 E0 D0 E0 2A E0 F0 12 E0 72 E0 F0 72 E0 12 85 PgUp E0 AA E0 49 E0 C9 E0 2A E0 F0 12 E0 7D E0 F0 7D E0 12 86 PgDn E0 AA E0 51 E0 D1 E0 2A E0 F0 12 E0 7A E0 F0 7A E0 12 89 E0 AA E0 4D E0 CD E0 2A E0 F0 12 E0 74 E0 F0 74 E0 12 203 Win E0 AA E0 5B E0 DB E0 2A E0 F0 12 E0 1F E0 F0 1F E0 12 204 App E0 AA E...

Page 479: ... 12 83 E0 2A E0 48 E0 C8 E0 AA E0 12 E0 75 E0 F0 75 E0 F0 12 84 E0 2A E0 50 E0 D0 E0 AA E0 12 E0 72 E0 F0 72 E0 F0 12 85 PgUp E0 2A E0 49 E0 C9 E0 AA E0 12 E0 7D E0 F0 7D E0 F0 12 86 PgDn E0 2A E0 51 E0 D1 E0 AA E0 12 E0 7A E0 F0 7A E0 F0 12 89 E0 2A E0 4D E0 CD E0 AA E0 12 E0 74 E0 F0 74 E0 F0 12 203 Win E0 2A E0 5B E0 DB E0 AA E0 12 E0 1F E0 F0 1F E0 F0 12 204 App E0 2A E0 5D E0 DD E0 AA E0 12 E...

Page 480: ...B 6B F0 6B 24 I 5 4C CC 73 F0 73 25 O 6 4D CD 74 F0 74 26 P 4A CA 7B F0 7B 37 J 1 4F CF 69 F0 69 38 K 2 50 D0 72 F0 72 39 L 3 51 D1 7A F0 7A 40 4E CE 79 F0 79 52 M 0 52 D2 70 F0 70 54 53 D3 71 F0 71 55 E0 35 E0 B5 40 4A E0 F0 4A Table D 6 No 124 key scan code Code set 1 Code set 2 Key top Shift Make Break Make Break Prt Sc Common E0 2A E0 37 E0 B7 E0 AA E0 12 E0 7C E0 F0 7C E0 F0 12 Ctrl E0 37 E0 ...

Page 481: ...odes D 8 Satellite A20 Maintenance Manual 960 444 Table D 7 No 126 key scan code Code set 1 Code set 2 Key top Shift Make Make Pause Common E1 1D 45 E1 9D C5 E1 14 77 E1 F0 14 F0 77 Ctrl E0 46 E0 C6 E0 7E E0 F0 7E This key generates only make codes ...

Page 482: ...endix E Key Layout Appendices Satellite A20 Maintenance Manual 960 444 E 1 E Appendix E Key Layout E 1 United States US Keyboard Figure E 1 US keyboard E 2 United Kingdom UK Keyboard Figure E 2 UK keyboard ...

Page 483: ...Appendices Appendix E Key Layout E 2 Satellite A20 Maintenance Manual 960 444 E 3 German GR Keyboard Figure E 3 GR keyboard E 4 French FR Keyboard Figure E 4 FR keyboard ...

Page 484: ...Appendix E Key Layout Appendices Satellite A20 Maintenance Manual 960 444 E 3 E 5 Spanish SP Keyboard Figure E 5 SP keyboard E 6 Italian IT Keyboard Figure E 6 IT keyboard ...

Page 485: ...Appendices Appendix E Key Layout E 4 Satellite A20 Maintenance Manual 960 444 E 7 Scandinavian SC Keyboard Figure E 7 SC keyboard E 8 Swiss German SL Keyboard Figure E 8 SL keyboard ...

Page 486: ...Appendix E Key Layout Appendices Satellite A20 Maintenance Manual 960 444 E 5 E 9 Canadian CS Keyboard Figure E 9 CS keyboard ...

Page 487: ...Appendices Appendix E Key Layout E 6 Satellite A20 Maintenance Manual 960 444 ...

Page 488: ...pendix F Wiring Diagrams F 1 Parallel Port Wraparound Connector SELECT Figure F 1 Parallel port wraparound connector F 2 RJ45 Wraparound Connector 1 TDP 2 TDN 3 RDP 6 RDN Figure F 2 RJ45 wraparound connector Satellite A20 Maintenance Manual 960 444 F 1 ...

Page 489: ...Appendices Appendix F Wiring Diagrams F 2 Satellite A20 Maintenance Manual 960 444 ...

Page 490: ...renewed BIOS data Rewriting the BIOS 1 Set the system to boot mode 2 Turn off the power to the computer 3 Remove the external cable and PC card 4 Insert the BIOS EC KBC rewriting disk into the USB FDD 5 Turn on the power while holding down the Tilde key Keep holding down the key until a message appears on the screen The BIOS rewriting starts 6 When the process is completed eject the BIOS EC KBC re...

Page 491: ...Appendices Appendix G BIOS Rewrite Procedures G 2 Satellite A20 Maintenance Manual 960 444 ...

Page 492: ...message may be displayed that the contents of the EC KBC has been erased In this case insert the BIOS EC KBC rewriting disk and the EC KBC will be rewritten 5 Normally it takes about 30 seconds to rewrite the EC KBC It may take 3 minutes maximum depending on the conditions of the computer or ICs The computer is not hung up Allow sufficient time Never reboot or turn off the power to the computer be...

Page 493: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 Satellite A20 Maintenance Manual 960 444 ...

Page 494: ...following table shows MTBF Mean Time Between Failures for each component Table I 1 MTBF Component Time hours LCD 50 000 Keyboard 40 000 HDD 300 000 USB FDD 43 800 DVD RAM drive 60 000 CD RW DVD ROM drive 60 000 AC adaptor 20 000 Satellite A20 Maintenance Manual 960 444 I 1 ...

Page 495: ...Appendices Appendix I Reliability I 2 Satellite A20 Maintenance Manual 960 444 ...

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Toshiba Satellite A20 Series, Maintenance Manual, Page: 94 / 495

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