MiTAC 7521 PLUS/N Page 113 Service Manual Download

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112

7521

Plus / N N/B MAINTENANCE

VGA CONTROLLER FAILURE

1. Confirm LCD panel or monitor is good

and check the cable are connected
properly.

2. Try another known good monitor or

LCD module.

Display

OK?

Remove all the I/O device & cable from
motherboard except LCD panel or extended
monitor.

Display

OK?

Replace faulty
LCD or monitor.

Connect the I/O device & cable
to the M/B one at a time to find
out which part is causing the
problem.

YES

Replace motherboard
or into board-level
Troubleshooting.

Re-soldering.

One of the following parts on the mother-board may be
defective, use an oscilloscope to check the following signal or
replace the parts one at a time and test after each replacement.

Parts:

U24    U2
J1         J2
Q2         Q3
Q4

Q15

Q14       U14
SW1      R5
R7 R150
L9

R18

R149 L537
L536 L534

Signals:

TXCLKOUT-
T
TXOUT0-

TXOUT1-

TXOUT2-

Check if

U24, U2, J1, J2

are cold

solder?

R[2~7]301
G[2~7]301
B[2~7]301
VBHSYNC
VBVSYNC
VBBLANK#
VGCLK
FPVCC
LID_OPEN#

FA8      FA9
FA11    FA10
FA6      FA7
RP11     RP12
RP31     RP33
RP24     RP32
RP26     RP36
L540      R527

8.3 VGA CONTROLLER FAILURE LCD NO DISPLAY

There is no display or picture abnormal on LCD.

YES

Summary of Contents for 7521 PLUS/N

Page 1: ...IDE FOR SERVICE MANUAL TROUBLESHOOTING GUIDE FOR SERVICE MANUAL TROUBLESHOOTING GUIDE FOR 7521 Plus N 7521 Plus N AUG 2001 AUG 2001 BY BY Richard Wang Richard Wang TESTING TECHNOLOGY DEPARTMENT TSSC T...

Page 2: ...ctors Switches Setting 3 Definition Location Of Connectors Switches Setting 3 1 Mother Board A 3 2 Mother Board Switch Table 3 3 Mother Board B 3 3 4 Daughter Board 3 5 Charger Board 3 6 IQSB Board 3...

Page 3: ...ure LCD No Display 8 4 External Monitor No Display 8 5 Memory Test Error 8 6 Keyboard K B Touch Pad T P ESB Test Error 8 7 CD ROM Drive Test Error 8 8 8 Hard Drive Test Error 8 9 USB Port Test Error 8...

Page 4: ...display system status such as AC Power indicator FDD HDD NUM LOCK CAP LOCK SCROLL LOCK SUSPEND MODE and battery present capacity charging status It also equipped with LAN FIR USB port 3D stereo audio...

Page 5: ...ll set of software drivers and utilities are available to allow advanced operating systems such as Windows 98 or Windows ME to take full advantage of the hardware capabilities Features such as bus mas...

Page 6: ...250ps One 48MHz output for USB and selectable 24 48MHz output pin 25 Two buffer copies of 14 318MHz input reference signal Supports up to 166MHz CPU or SDRAM operation Supports two SDRAM DIMMS Ideal f...

Page 7: ...utilize the frame buffer size up to 64MB The Super South Bridge in SiS630S integrates all peripheral controllers accelerators interfaces SiS630S provides a total communication solution including 10 1...

Page 8: ...PCI Hole Areas Integrated A G P Compliant Target 66Mhz Host to PCI Bridge AGP v2 0 Compliant Supports Graphic Window Size from 4MBytes to 256MBytes Supports Pipelined Process in CPU to Integrated 3D...

Page 9: ...rd DMA Mode 0 1 2 Ultra DMA 33 66 100 Two Independent IDE Channels Each with 16 DW FIFO Virtual PCI to PCI Bridge Integrated Ultra AGP VGA for Hardware 2D 3D Video Graphics Accelerators Supports Tight...

Page 10: ...rts Per Pixel Texture Fog Perspective Correction Supports MIPMAP with Point Sampled Linear Bi Linear and Tri Linear Texture Filtering Supports Single Pass Two MIPMAP Texture One Texture on Clock Suppo...

Page 11: ...ture Supports Two Independent Video Windows with Overlay Function and Scaling Factors Supports YUV To RGB Color Space Conversion Supports Bi Linear Video Interpolation with Integer Increments of Pixel...

Page 12: ...ink TM and LVDS Digital Interface Built in Secondary CRT Controller for Independent Secondary CRT LCD or TV digital output Supports VESA Standard Super High Resolution Graphic Modes 640x480 16 256 32K...

Page 13: ...4 S5 CPU Power States Include C0 C1 C2 C3 Power Button with Override RTC Day of Month Month of Year Alarm 24 bit Power Management Timer LED Blinking in S0 S1 and S3 States System Power Up Events Inclu...

Page 14: ...ible Programmable 16 bits counters System timer interrupt Generate refresh request Speaker output Integrated Keyboard Controller Hardwired Logic Provides Instant Response Supports PS 2 Mouse Interface...

Page 15: ...t Memory Access DMA Controller for Low CPU and Bus Utilization Supports an Unlimited PCI Burst Length Supports Big Endian and Little Endian Byte Alignments Implements Optional PCI 3 3v Auxiliary Power...

Page 16: ...rupt pins Plug and Play module FDC 100 IBM compatible S W register compatible to 82077 with 16Bytes data FIFO Support 3 Mode FDD FIR MIR SIR SHARP ASK for Infrared application COM2 IrDA 1 0 IrDA 1 1 S...

Page 17: ...l purpose I O Multi Function PCI Device With Separate Configuration Space For Each Socket Pipelined architecture allows greater than 130Mbps second throughput from cardbus to PCI and from PCI to cardb...

Page 18: ...tage Mode Meets PC Card Standards RESET for System Initialization of PC Cards 12 V Supply Can Be Disabled Except During 12 V Flash Programming Short Circuit and Thermal Protection 30 Pin SSOP DB and 3...

Page 19: ...ion 1 250 Duty cycle can be set from 0 to 100 I C bus interface one channel Include single master mode and slave mode Host interface HIF 8 bit host interface port Three host interrupt requests HIRQ1 1...

Page 20: ...tware standby mode Hardware standby mode A single chip microcomputer On chip flash memory Maximum 64 kbyte address space Support three PS 2 port for external keyboard mouse and internal track pad Supp...

Page 21: ...V1 0B Support DMI 2 3 Support SMBIOS 2 2 Support Quite Boot Support Extended Int14H function 50H IR type switching Support Hot Plug for PS 2 keyboard and pointing devices Support Intel CPU Microcode U...

Page 22: ...The configuration information is stored in a special kind of memory called CMOS Complementary Metal Oxide Semiconductor RAM CMOS RAM data are backed up by a RTC backup battery You may need to run Set...

Page 23: ...nd software can be made to trigger wake up events The PC is perceived to be off when not in use but still capable of responding to wake up events ACPI Power States G0 G3 Global power states S0 S5 Syst...

Page 24: ...leeping State S3 The S3 sleeping state is a low wake up latency sleeping state where all system context is lost except system memory CPU cache and chip set context is lost in this state This state is...

Page 25: ...cover switch power button sleep button to hibernate and presses these buttons the platform will enter this state Set System hibernate in Power Schemes for system inactivity time out Events that can b...

Page 26: ...Off No power supplied and consumption achieved by unplugging the machine and removing the battery By definition unit will return to Soft Off S5 by restoration of power If previous mode was Hibernatio...

Page 27: ...power and standby Enable Disable by toggling the setting in Bios Setup Menu Idle Mode slows down the CPU during brief periods This state is attained by The APM driver acknowledge APM BIOS that the sy...

Page 28: ...relatively long time to return to full on mode Operational parameters are saved to be restored later when resuming This state is attained by Triggered by the timeout timer of the suspend timer Pressi...

Page 29: ...ENANCE Plus N N B MAINTENANCE 5 Off System is not working the power supply is off Operational parameters are not saved System resets and initializes when transitioning to the Full on State Component L...

Page 30: ...ckets on Mother Board for expansion Supports 3 3V SDRAM 2 banks on one socket SDRAM accesses time from clock 6ns Memory bus bandwidth 64 bits 7521 plus Supports 64 MB SDRAM on board and one 144 pin DI...

Page 31: ...vices Two Cardbus Sockets Cable For Connection Between M B And Panel Cable For Connection Between M B And Backlight BD Digital Optical 48KHz Analog Line out Jack Line In Jack and Microphone Input Jack...

Page 32: ...rol Rotary VR Stereo BTL 2x1 W amplifiers TPA0202 with 8 Ohm Load CD ROM IDE interface 18 bit stereo ADC 20 bit stereo DAC for record and play back Programmable sample rates from 20Hz to 20kHz for rec...

Page 33: ...ll Module Size 4 0 x 12 2 x 5 1 mm HxWxD Complete Shutdown TXD RXD PIN diode Low Shutdown Current 10 nA typical Adjustable Optical Power Management Adjustable LED drive current to maintain link integr...

Page 34: ...pports ACPI and Network Device Class Power Management specification All the device states of D0 D1 D2 D3hot and D3cold are implemented SiS900 also supports Remote Wake On LAN and OnNow for the Desktop...

Page 35: ...an unlimited PCI burst length Supports big endian and little endian byte alignments Supports PCI Device ID Vendor ID Subsystem ID Subsystem Vendor ID programming through the EEPROM interface Implement...

Page 36: ...0 Supports PCI Bus Power Management Interface Specification Version 1 0a Supports Network Device Class Power Management Specification Version 1 0a Supports PCI Hot Plug Specification Revision 1 0 Imp...

Page 37: ...al interface along with full programmability make the CH7005 ideal for system level PC solutions All features are software programmable through a standard I 2 C port to enable a complete PC solution u...

Page 38: ...37 7521 7521Plus N N B MAINTENANCE Plus N N B MAINTENANCE 1 3 Special Feature Function 1 3 1 Hot Key Function 1 3 2 Easy Start Button function...

Page 39: ...powered by AC and flash on 1 second off 1 second when Suspend to DRAM is active using AC power The LED is off when the notebook is off or powered by batteries or when Suspend to Disk BATTERY POWER Thi...

Page 40: ...Full On Mode In this mode each device is running with the maximal speed CPU clock is up to its maximum Doze Mode In this mode CPU will be toggling between on stop grant mode either The technology is c...

Page 41: ...em will enter next PMU state depending on the application When the VGA activity monitoring is enabled the performance of the system will have some impact Battery Warning System also provides Battery c...

Page 42: ...its low power state When the battery capacity is below 10 Battery Warning State system will generate beep for every 2 seconds When hearing the beeping it is recommended that user should plug in AC ad...

Page 43: ...ce Flat Link Ti Display Mode Normal White Back light unit CCFL 1 tube DC for Panel 3 3V 0 3V Pixel pitch 0 279 H X0 279 V Power supply current 320 mA Typ Lamp start Voltage 1500Vrms 25 LCD Panel Hard...

Page 44: ...ower Consumption 4 5W During spin up Physical Dimensions H X W X D 9 5 mm X 100 0 mm X 70 0 mm 15GB 20GB 24GB HDD To Be Defined Mitsumi D353G Using High density 2HD 3 5 inch disk Data transfer rate 50...

Page 45: ...System has optional MATSUSHITA UJDA150 24X speed CD ROM drive LGS CRN8241B 24X speed CD ROM drive or TEAC CD 224E A92 24X speed CD ROM drive Hardware interface is compliant with ATAPI IDE specificatio...

Page 46: ...eed Fast 170 ms Random Access Time DVD Max 4X DVD Max 24X CD Max 5 408 Kbytes s DVD Max 3 600 Kbytes s CD Sustained Transfer Rate PIO mode 4 ATAPI Drive 16 7 Mbytes s DMA Multi word DMA transfer mode...

Page 47: ...1 CMOS Battery LED Indicators HP HSDL 3600 007 FIR Module Meet IrDA Physical Layer Specification 1 cm to 1 Meter Operating Distance 30 degree Viewing Angle Support Two Channels 2 4 Kb s to 115 2Kb s...

Page 48: ...V 0 3V MAX data rate 460 kbps Shutdown supply current 15 TYP uA 50 MAX uA Serial Interface PCMCIA Socket Operating temperature range 55 85 Insertion force 39 2N MAX 10000 times insertion and withdrawa...

Page 49: ...Sunonwealth Electric Machine Industry Co Ltd Model number KD0502PEB2 8 DC brushless fan Operating speed 8000 rpm Input voltage 5V Operating temperature 10 70 degree C Weight 7g Direction of rotation C...

Page 50: ...3 Panel ID switch4 Panel ID select In In Defined Off Off GPIO 4 KBD_US JP In In Defined Off Off GPIO 5 Rst_CDROM Reset CD ROM function Out Out Defined Off Off GPIO 6 EXTSMI In In Defined Off Off GPIO...

Page 51: ...0 HannStar HSD141PX11 14 1 0 0 0 1 Unipac UP141X01 2 14 1 0 0 1 0 Hyundai 14X13 101 14 1 1 0 0 0 Hyundai HT15X31 15 1 0 0 1 Hitachi TX38D85VC1CAA 15 Note 3 CPU SDRAM Frequency setting table SW_FS3 SW_...

Page 52: ...r with bit size 3mm for CPU assembly disassembly 2 Auto screw driver for system assembly disassembly Screw Size Tooling Tor Bit Size 1 M2 0 Auto Screw driver 2 5 3 0 kg cm2 0 2 M2 6 Auto Screw driver...

Page 53: ...iew and Disassembly 2 1 System View 2 1 1 Front View n Mail Received Button Indicator o Power Indicators p Top Cover Latch 2 1 2 Left Side View n Audio Input Connector o Microphone Connector p Audio O...

Page 54: ...TENANCE 2 1 3 Right Side View n Battery Pack o CD ROM DVD ROM Drive p IR Port 2 1 4 Rear View n Power Connector o PS 2 Port p USB Ports q Parallel Port r Serial Port s RJ 45 Connector t VGA Port u TV...

Page 55: ...INTENANCE Plus N N B MAINTENANCE 2 1 5 Bottom View n CPU Cover o Modem Card Cover p FDD HDD Module q Battery Pack 2 1 6 Top Open View n LCD Screen o Power Button p Keyboard q Touchpad r Stereo Speaker...

Page 56: ...components from the notebook NOTE Before you start to install replace these modules disconnect all peripheral devices and make sure the notebook is not turned on or connected to AC power NOTEBOOK 2 2...

Page 57: ...king button to the unlock position n then slide and hold the latch in the unlock position and pull the battery pack out of the compartment o figure 2 1 Figure 2 1 Reassembly 1 Push the battery pack in...

Page 58: ...arefully put the notebook upside down 2 Remove two screws locking the CPU compartment cover and then lift the cover up figure 2 2 Figure 2 2 Figure 2 3 3 Remove four screws fastening the heatsink and...

Page 59: ...igure 2 4 Reassembly 1 Align the arrowhead corner of the CPU with the beveled corner of the socket and insert the CPU pins into the holes Insert the flat screwdriver into the CLOSE hole of the socket...

Page 60: ...dem Card Disassembly 1 Carefully put the notebook upside down 2 Remove one screw locking the modem card compartment cover and then lift the cover up figure 2 5 Figure 2 5 Figure 2 6 3 Remove one screw...

Page 61: ...gure 2 7 Figure 2 7 Reassembly 1 Reconnect the modem card into the system board and secure with two screws 2 Hold the connector board an angle so that the phone line connector is pointed towards the o...

Page 62: ...Plus N N B MAINTENANCE Plus N N B MAINTENANCE 2 2 4 FDD HDD Module Disassembly 1 Carefully put the notebook upside down 2 Remove one screw and slide the FDD HDD module out of the compartment figure 2...

Page 63: ...ove it figure 2 9 Figure 2 9 Figure 2 10 4 Remove four screws to separate the hard disk drive from the metal shield figure 2 10 Reassembly 1 To install the hard disk drive place it in the bracket and...

Page 64: ...ve the battery pack See section 2 2 1 Disassembly 3 Remove the modem card See section 2 2 3 Disassembly 4 Remove the FDD HDD module See step 2 in section 2 2 4 Disassembly 5 Remove one screw locking t...

Page 65: ...e CD ROM drive into the compartment 2 Replace the base unit frame and secure with thirteen screws includes one locking the CD ROM drive 3 Replace the FDD HDD module See section 2 2 4 Reassembly 4 Repl...

Page 66: ...rd to unlatch the Easy Start panel n push it leftward and lift it up from the left side o figure 2 13 Figure 2 13 Figure 2 14 3 Slightly lift up the keyboard and disconnect the cable from the system b...

Page 67: ...ng clips outwards n and remove the SO DIMM o figure 2 15 Figure 2 15 Reassembly 1 To install the SO DIMM match the SO DIMM s notched part with the socket s projected part and firmly insert the SO DIMM...

Page 68: ...section 2 2 6 Disassembly 2 Remove the two hinge covers by inserting a flat screwdriver to the rear of the cover and pry the cover out figure 2 16 Figure 2 16 Figure 2 17 3 Open the top cover Unplug...

Page 69: ...lus N N B MAINTENANCE Reassembly 1 Attach the LCD assembly to the base unit and secure with four screws on the hinges 2 Reconnect the LCD cable connectors to the system board 3 Replace the two hinge c...

Page 70: ...of the frame and gently pry the frame out Repeat the process until the frame is completely separated from the housing 4 Remove the four screws on the two sides of the LCD panel and unplug the cable fr...

Page 71: ...vious two sections 2 To remove the inverter board at the bottom side of the LCD assembly unplug the cable and remove the two screws figure 2 20 Figure 2 20 Reassembly 1 Fit the inverter board back int...

Page 72: ...ly 2 Remove the LCD assembly See section 2 2 8 Disassembly 3 Remove seven screws and then take out the Easy Start board figure 2 21 Figure 2 21 Figure 2 22 4 Remove four screws on the rear side of the...

Page 73: ...MAINTENANCE 6 Remove six screws and two hexnut screws fastening the metal shield and then lift the shield up from the system board carefully figure 2 23 Figure 2 23 Figure 2 24 7 Lift up the speaker...

Page 74: ...disconnect the cable of the touchpad Now you can lift the system board up from the base unit figure 2 26 Reassembly 1 Fit the system board into place and secure with two screws 2 Reconnect the touchp...

Page 75: ...e the battery pack heatsink modem card FDD HDD module and CD ROM drive 8 Secure the four screws on the rear side of the notebook 9 Put the notebook back to the upright position Replace the Easy Start...

Page 76: ...board See section 2 2 11 Disassembly 2 Remove the four screws to lift up the touchpad holder and touchpad panel figure 2 27 Figure 2 27 Reassembly 1 Replace the touchpad holder and touchpad panel and...

Page 77: ...Mother Board A J6 J3 J4 SW2 J2 J1 SW1 J5 SW3 SW4 J6 144 pins expansion SDRAM SO DIMM socket SW1 Cover Suspend Switch SW2 Power button SW3 CPU FSB Select SW4 LCD Panel ID Select J1 Inverter BD CONN J2...

Page 78: ...SW_FS1 SW_FS0 CPU SDRAM 0 0 0 0 66 100 0 0 0 1 100 100 0 0 1 1 133 100 0 1 0 0 66 133 0 1 0 1 100 133 0 1 1 1 133 133 1 0 0 0 66 66 SW2 SW1 SW3 SW4 SW4 LCD Panel ID Select LCD_SW4 LCD_SW3 LCD_SW2 LCD...

Page 79: ...apter J502 PS2 Mouse keyboard J503 Line in Jack J504 RJ45 LAN connect J505 Parallel Port J506 PCMCIA card socket J507 VGA Connector J508 USB connector J509 Phone Jack Connector J510 Line Out with APDI...

Page 80: ...Definition Location Of Connectors Switches 3 4 Daughter Board MDC LAN transfer board J1 J23 JP1 U2 U1 JP3 JP1 MDC jump wire connector JP3 Connector 2 for connected MDC LAN transfer board to M B J1 RJ...

Page 81: ...inition Location Of Connectors Switches 3 5 Charger Board Charge board side B J500 SW500 Charge board side A J1 PJ4 J2 J1 Charger Touch Pad connector to M B PJ4 Battery pack connector J2 Internal spea...

Page 82: ...A IQSB board side A SW1 SW2 D8 SW3 SW3 SW2 SW1 SW4 SW5 Easy Start Button Board side B J500 IQSB board side B J501 SW1 Touch Pad Left Key SW2 Touch Pad Left Key SW3 E Mail Function key D8 E Mail Indica...

Page 83: ...PU19 12 23 PU18 PU14 PU4 PU2 PU5 PU9 PU7 U22 U23 U25 U26 U29 U30 U1 ADM3311ARU RS232 SIO U2 DS90C363MTD VGA LVD controller U5 CS4299 AC 97 CODE U6 TPA0202 AUDIO AMP U7 CH7005C TV Encoder U14 H8 3434F...

Page 84: ...N B MAINTENANCE Plus N N B MAINTENANCE 4 Definition Location Of Major Components 4 2 Main Board SIDE B BT501 U502 U503 U505 U502 PH163112 LAN Controller U503 Socket 370 CPU U505 PCI1225PDV PC CARD in...

Page 85: ...2 5V Tolerant The BCLK Bus Clock signal determines the system bus frequency Both system bus agents must receive this signal to drive their outputs and latch their inputs on the BCLK rising edge All ex...

Page 86: ...onnected to the appropriate pins balls on both agents The data driver asserts DRDY to indicate a valid data transfer Signal Name I O Signal Description DBSY I O GTL The DBSY Data Bus Busy signal is as...

Page 87: ...sertion INIT is an asynchronous input If INIT is sampled active on RESET s active to inactive transition then the processor executes its built in self test BIST Signal Name I O Signal Description INTR...

Page 88: ...GOOD Relationship at Power On The PWRGOOD signal which must be supplied to the processor is used to protect internal circuits against voltage sequencing issues The PWRGOOD signal should be driven high...

Page 89: ...The STPCLK Stop Clock signal when asserted causes the processor to enter a low power Stop Grant state The processor issues a Stop Grant Acknowledge special transaction and stops providing internal cl...

Page 90: ...ncoded VID For processors that have Intel SpeedStep technology enabled VID 4 0 encode the voltage required in the battery optimized mode VID 4 0 are needed to cleanly support voltage specification cha...

Page 91: ...wner whenever the data is valid on the bus DBSY 1 5V MAIN I O GTL Data Bus Busy Whenever the data is not valid on the bus with DRDY is deserted DBSY is asserted to hold the bus Name Tolerance Power Pl...

Page 92: ...utput signals ina read cycle and input signals in a write cycle PAR 3 3V 5V MAIN I O Parity SiS630drives out Even Paritycovering AD 31 0 and C BE 3 0 It does not check the input parity signal FRAME 3...

Page 93: ...hen sampled active low a non maskable interrupt NMI can be generated to CPU if enabled Name Tolerance Power Plane Type Attr Description IIOW A B 3 3V MAIN O Primary Secondary Channel IOW Signals ICHRD...

Page 94: ...Bus bit 32 Video Bridge Programming Control VMD31 VBHSYNC 3 3V MAIN I O I O Display Memory Data Bus bit 31 Digital Video Horizontal Sync VMD30 VBVSYNC 3 3V MAIN I O I O Display Memory Data Bus bit 30...

Page 95: ...olerance Power Plane Type Attr Description KBDAT GPIO10 3 3V 5V AUX I OD I O OD Keyboard Dada When the internal keyboard controller is enabled this pin is used as the keyboard data signal General Purp...

Page 96: ...T 3 3V MAIN O AC 97 Serial Data output Serial data output to Codecs AC_SYNC 3 3V MAIN O AC 97 Syncronization This is a 48KHz signal which is used to syncronize the Codecs SPDIF GPIO7 3 3V 5V MAIN O I...

Page 97: ...PCI Slot 3 the PCI Bus has been granted General Purpose Input Output 1 Refer to GPIO description OC3 LDRQ1 GPIO2 3 3V 5V MAIN I I I O OD USB Port 3 Over Current Detection OC3 is used to detect the ov...

Page 98: ...IS900 LAN Controller SH12 RJ45 AC97 Link Internal MIC U5 CS4299 CODEC Internal SPK U6 TPA 0202 Line Out Phone Jack External MIC Line In SH16 J511 M D C RJ 11 Jack SH24 CDROM HDD ON BOARD SDRAM SH10 U3...

Page 99: ...an error message displayed on the screen If the error occurs before the display displayed on the screen If the error occurs before the display is initialized then the is initialized then the screen ca...

Page 100: ...t counter timer 1 exite the RAM 16h User register config through CMOS 18h Dispatch to 1st 64K RAM test 19h Checksum the ROM 1Ah Reset PIC s 8259s 1Bh Initialize video adapter s 1Ch Initialize video 68...

Page 101: ...3Bh Initialize BIOS data area at 40 0 3Ch Initialize the hardware interrupt vector tabl 3Dh Search and init the Mouse 3Eh Update num lock status 3Fh OEM initialization of COMM and LPT ports 40h Confi...

Page 102: ...11904800001 DESCRIPTION PWA PWA 378PORT DEBUG BD Note Order it from MIC TSSC 7 3 7 3 2 2 CIRCUIT CIRCUIT PIO PIO CONNECTOR CONNECTOR LED LED 1 1 13 13 14 14 25 25 PIN1 STROBE PIN 13 SLCT PIN1 STROBE P...

Page 103: ...GA CONTROLLER FAILURE LCD NO DISPLAY 8 4 EXTERNAL MONITOR NO DISPLAY 8 5 MEMORY TEST ERROR 8 6 KEYBOARD K B TOUCH PAD T P ESB TEST ERROR 8 7 CD ROM DRIVE TEST ERROR 8 8 HARD DRIVE TEST ERROR 8 9 USB P...

Page 104: ...Plus N N B MAINTENANCE 8 1 NO POWER When the power button is pressed nothing happens power indicator does not light up Power Jack 22 5V 2 67A 1 Check AC Adaptor 2 Check OUTLET 3 Check Charge B D OUTL...

Page 105: ...P29 S12V PU10 PQ7 PQ9 PL503 PU501 P27 PU10 PQ7 PQ9 PL503 S5V_P P27 PQ3 5V P29 J02 S5V P29 PQ501 12V P29 PL12 PU18 PU12 PU19 PU20 PU22 PU23 PL11 P30 VCC_CORD 8 1 NO POWER When the power button is pres...

Page 106: ...N GND PWR_VDDIN VDD5 S G D VDD5_SW F2 R199 U32 LP2951 02BM 8 2 7 3 6 1 5 4 X C247 10U Q22 Q23 DTC144WK 3 2 1 D S G 3 1 2 ADEN _P BATT 1 4 5 6 7 8 2 3 PJ4 6 PF3 6 5A 32VDC PR2 301K PC5 0 1U 50V PR1 100...

Page 107: ...er source O K Either AC adapter or battery No Connect AC adapter or battery Yes Try another known good battery charger board or AC adapter Power O K Replace motherboard or go into board level troubles...

Page 108: ...dapter PJ501 PL501 PF501 PC2 PC509 PR15 PR16 PD501 PR14 PD3 PU2 PR13 SIGNAL PARTS ADINP LEARING POWER OK END NO If D VMAIN failure CHECK PD3 PD4 PL3 PR20 PR21 PQ12 PU9 PR23 PC58 PC57 CHECK PD1 PD2 F2...

Page 109: ...e motherboard or into board level Troubleshooting NO Reboot and display OK Plug PIO debug board to PIO port and get the 378h error code Is there any error code shown on debug board Check system clock...

Page 110: ...8MHZ 5 20 R125 21 R126 28 R86 29 R85 SDRAMCLK2 SDRAMCLK3 26 R135 2 630SDCLK IO_48MHZ C178 C162 SDRAMCLK0 SDRAMCLK1 U19 U23 U26 U30 U505 TI1225 PCMCIA CONTROLLER 11 R132 PCLKCARD 180 U31 LPC TO ISA W83...

Page 111: ...U505 PCMCIA CARDBUS CONTROLLER TI 1225 JL21 PCIRSTNS 166 U13 POWER SWITCH MATRIX 14 U5 CODEC CS4299 11 U504 MAX809 VCC RESET GND VDD5 H8_RESET R57 ARST 23 R575 SW2 POWERBTN R576 7521 Power Module U12...

Page 112: ...RP32 RP26 RP36 VBHSYNC VBVSYNC VBBLANK VGCLK L537 L536 L534 L540 22 23 25 26 TXCLKOUT TXCLKOUT TXOUT0 TXOUT0 TXOUT1 TXOUT1 TXOUT2 TXOUT2 32 33 40 41 38 39 34 35 27 VBCLK 7 11 16 20 8 12 15 19 1 2 3 5...

Page 113: ...herboard or into board level Troubleshooting Re soldering NO One of the following parts on the mother board may be defective use an oscilloscope to check the following signal or replace the parts one...

Page 114: ...TOR NO DISPLAY There is no display or picture abnormal on CRT monitor U24 SIS 630S G D S G D S BLUE DDCK Q502 Q501 L516 L515 L514 L519 L512 L513 R2 R518 R516 3 15 C505 R114 R112 SH5 SH11 L518 J506 1 R...

Page 115: ...rt is causing the problem YES NO YES NO Replace motherboard or into board level Troubleshooting YES Re soldering One of the following parts on the mother board may be defective use an oscilloscope to...

Page 116: ...0 14 DQMA 0 7 CS 0 3 SRASA SCASA CSA 2 3 CSA 0 1 U508 74LVC244 CKE R588 8 2K S3V CKE 0 1 CKE 2 4 ON BOARD 64MB SDRAM U18 U22 U25 U29 U19 U23 U26 U30 J6 RP20 RP22 RP23 RP25 RP41 RP44 RP54 RP53 CSA 0 3...

Page 117: ...END YES NO Replace mother board or into board level Troubleshooting Board level Troubleshooting for Memory test error Check the following parts for cold solder or one of the following parts on the mot...

Page 118: ...31 LPC TO ISA W83626F KBD_US JP X2 16MHz SW2 SW3 U507 74CBTD 3384 97 96 53 2 3 KBCS 95 25 L54 L53 J515 5V C262 SW2 SW1 L55 10 J500 T P SWITCH B D CHARGE B D SW B D QSB0 QSB1 QSB2 QSB3 QSB4 BAT_D BAT_C...

Page 119: ...T P test error Check the following parts for cold solder or one of the following parts on the mother board may be defective use an oscilloscope to check the following signal or replace the parts one...

Page 120: ...n reading data from CD ROM drive CD ROM U24 SIS 630S SDCS 1 3 SDIOW SDD 0 15 SIORDY RP50 RP51 RP52 RP58 J512 Q508 SDA 0 2 RSDDACK RSDIOR RIRQ15 RSDDREQ RDDS 0 15 RSDIOW RDAS 0 2 25 22 24 28 29 27 CD_R...

Page 121: ...OK Replace M B or into board level Troubleshooting Correct it then end Board level Troubleshooting for CD ROM drive test error Check the following parts for cold solder or one of the following parts...

Page 122: ...RPDDACK RPDIOR RIRQ14 RPDDREQ RCS 1 3 P RDDP 0 15 RPDIOW RDAP 0 2 22 24 20 16 14 R212 Either an error message is shown or the driver motor continues spinning while reading data is from or writing dat...

Page 123: ...lowing parts on the mother board may be defective use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement Re boot OK Correct it then end YE...

Page 124: ...vice is installed J508 U24 SIS 630S SH6 R143 R142 R140 R141 C14 C25 B1 A1 B3 B2 A3 A2 B4 A4 GND1 GND2 GND3 GND4 L504 L511 USB_GND SH21 L2 F502 USB_B1 C507 L6 5V R20 C506 USB_OC0 R19 F503 USB_A1 5V R22...

Page 125: ...n end Board level Troubleshooting for USB test error Check the following parts for cold solder or one of the following parts on the mother board may be defective use an oscilloscope to check the follo...

Page 126: ...OM_ LEFT U24 SIS 630S ASDIN0 C75 L13 J509 L10 L505 L506 C59 R42 R41 C66 C64 R55 L26 VA 21 20 18 19 5 8 10 12V U4 ADP3301AR 5 C321 D2 C48 C39 R50 L501 R504 LINE_IN L R502 R503 C56 C55 23 24 J4 L503 L50...

Page 127: ...RLINE IN LLINE IN LHP IN ROUT ROUT LOUT LOUT 22 15 3 10 C24 U6 TPA0202 Amplifier Drive IC LED 5 4 2 3 1 8 9 7 VA 5V L29 L11 L24 L23 L28 L25 L15 R29 R38 3V R37 Q6 R43 Q5 3V DEVICE DECT DECT HP OPT L16...

Page 128: ...SPK_OFF 1 If no sound cause of line out check the following parts signals 2 If no sound cause of MIC check the following parts signals 3 If no sound cause of CD ROM check the following parts signals...

Page 129: ...DCD COM1RI PIN 1 DCD DATA CARRIER DETECT PIN 6 DSR DATA SET READY PIN 2 RD RECEIVED DATA PIN 7 RTS REQUEST TO SEND PIN 3 TD TRANSMIT PIN 8 CTS CLEAR TO SEND PIN 4 DTR DATA TERMINAL READY PIN9 RI RING...

Page 130: ...l Troubleshooting NO YES Correct it and end YES NO Change the faulty part and end Board level Troubleshooting for SIO test error Check the following parts for cold solder or one of the following parts...

Page 131: ...PRINTER D LPD 0 7 PIN DEFINITION OF PIO PORT LO OPBACK CONNECTOR FOR PIO TEST PIN 1 STB STROBE SIGNAL PIN 14 AFD AUTO LINE FEED PIN 1 13 SHORT PIN 10 16 SHORT PIN 2 9 D0 D7 PARALLEL PORT DATA BUS D0 T...

Page 132: ...ooting NO YES NO YES Correct it and end Change the faulty device then end Board level Troubleshooting for PIO test error Check the following parts for cold solder or one of the following parts on the...

Page 133: ...R PERR STOP DEVSEL FRAME REQ0 GNT0 CLKRUN U13 TPS2206 VPPAOUT CARD_VCCA VPPBOUT CARD_VCCB POWER SWITCH MATRIX ACD 0 15 ACA 0 25 BCD 0 15 BCA 0 25 AIOWR AIORD AINPACK AREG ARDY AWAIT ABVD1 ABVD2 ARESET...

Page 134: ...arts on the mother board may be defective use an oscilloscope to check the following signal or replace the parts one at a time and test after each replacement Parts U13 U505 U506 RP11 RP12 RP14 RP508...

Page 135: ...CAP 1U 25V 80 20 0603 Y5V SMT C525 C540 C549 C559 C5 272075104701 CAP 1U 50V 80 20 0603 SMT C143 C149 C160 C165 C1 272072104402 CAP 1U CR 16V 10 0603 X7R SMT C10 C501 C517 C527 C53 272002474401 CAP 4...

Page 136: ...4 CON FPC FFC 12P 5MM R A SMT REDSEA J515 291000152604 CON FPC FFC 26P 1MM R A ELCO SMT J5 291000023002 CON HDR FM 15P 2 0 8MM H4 4 R A SMT J511 291000023201 CON HDR FM 16P 2 1 27MM R A SMT J514 Part...

Page 137: ...0u 6 3V M 10 1 4 6 55 105 C C4 312270687161 EC 680U 6 3V 20 D10 FUJITSU FPCAP PC512 PC513 227670000003 END CAP AK BOX 7521 227670000004 END CAP BATTERY 7521 Part Number Description Location s 22767000...

Page 138: ...RESET CIRCUIT 4 38V SOT2 U504 Part Number Description Location s 286303301001 IC ADP3301AR 5 8 REG SO 8P U4 284507005001 IC CH7005C TV ENCODER 3 5V PQFP 44P U7 324180786043 IC CPU P III 800MHZ EB FCPG...

Page 139: ...70020001 LABEL AGENCY GLOBAL MTC 7521 242600000157 LABEL BAR CODE S N 13 5 75 COMMON 242600000433 LABEL BLANK 11 5MM COMMON Part Number Description Location s 242664800013 LABEL CAUTION INVERT BD PITC...

Page 140: ...T PR47 271071124301 RES 120K 1 16W 5 0603 SMT PR14 271071141102 RES 140 1 16W 1 0603 SMT R581 Part Number Description Location s 271071143701 RES 14K 1 16W 0 1 0603 SMT R30 271072151101 RES 150 1 10W...

Page 141: ...R176 271071681301 RES 680 1 16W 5 0603 SMT R513 R242 R243 R244 R2 271071715311 RES 715K 1 16W 1 0603 SMT PR19 Part Number Description Location s 271071750101 RES 75 1 16W 1 0603 SMT R12 R13 R14 R15 R5...

Page 142: ...NIW 370102010253 SPC SCREW M2L2 5 NIW NLK HD07 370102020301 SPC SCREW M2L3 NIW K HEAD Part Number Description Location s 370102010604 SPC SCREW M2L6 K HD NIW NLK HEAT 370103010405 SPC SCREW M3L4 NIW K...

Page 143: ...288204920001 TRANS SI4920DY NCH DUAL 5 8A30V SO8 PU4 PU5 288204925001 TRANS SI4925DY P MOSFET SO 8 PU16 288209410001 TRANS SI9410DY N MOSFET 04OHM SO 8 Q2 273001050022 TRANSFORMER 10 100 BASE PH163112...

Page 144: ......

Page 145: ...t 5 Modify CRT_ISOLATE circuit 6 Modify LM393A circuit for RTC data loss problem R02 04 30 2001 1 Add AGPAVDD1 circiut for LCD panel incorrect color 2 Modify Enable_VGA AND PCI_RST circuit 02 7521 plu...

Page 146: ...1 2 C577 0 1U 16V 0603 10 1 2 C501 0 1U 16V 0603 10 1 2 C566 0 1U 16V 0603 10 1 2 C576 0 1U 16V 0603 10 1 2 C527 0 1U 16V 0603 10 1 2 C8 0 1U 16V 0603 10 1 2 RP4 56 8 RPX8 1 2 3 4 5 6 7 8 9 10 11 12...

Page 147: ...7 U27 P28 R27 T26 T28 R28 P27 M24 H26 G29 J26 H29 H27 K27 H28 J29 J27 K26 J28 K28 L26 L27 L28 K29 M25 M26 M27 L29 N25 N28 M28 M29 N29 N26 P24 N27 P26 P29 T25 W28 W27 Y29 Y27 Y26 AA28 AA26 AB28 AB26 AC...

Page 148: ...SSD9 VSSD10 VSSD11 VSSD12 VSSD13 VSSD14 VSSD15 VSSD16 VSSD17 VSSD18 VSSQ0 VSSQ1 VSSQ2 VSSQ3 VSSQ4 VSSQ5 VSSQ6 VSSQ7 VSSQ8 VSSQ9 VSSQ10 VSSQ11 VSSQ12 VSSQ13 VDDQ0 VDDQ1 VDDQ2 VDDQ3 VDDQ4 VDDQ5 VDDQ6 VD...

Page 149: ...GND3 GND4 C20 4 7U 0805 80 20 1 2 L535 BEAD_130Z 100M 1 2 C513 47P NA 0603 10 1 2 R580 0 0603 1 2 D506 BAW56 2 1 3 R577 0 0603 1 2 C158 47P 0603 1 2 R527 10 0603 1 2 C717 10U 16V 1206 1 2 C716 0 1U 2...

Page 150: ...1 2 R231 10K 0603 1 2 X4 32 768KHZ CM200_MC306 1 4 SW4 HDS404E 1 2 3 4 8 7 6 5 D17 BAW56 SOT23N 2 1 3 R242 680 0603 1 2 R244 680 0603 1 2 R243 680 0603 1 2 L46 BEAD_130Z 100M 1 2 R82 0 0603 1 2 R245 6...

Page 151: ...35 36 37 38 39 5 42 43 44 1 2 26 27 3 4 6 40 41 10 11 12 13 14 15 D 8 DGND0 D 9 DVDD2 CSYNC DGND1 GND0 CVBS C Y GND1 IRSET VDD DGND ADDR DVDD0 AVDD XTALI XTALO AGND BCO DGND2 P OUT DVDD3 XCLK DVDD1 D...

Page 152: ...25 1 6 14 38 22 33 19 48 4 5 26 3 9 41 24 27 30 45 18 17 44 15 39 36 VDDLCPU CPUCLK2 GNDPCI PCICLK3 PCICLK4 PCICLK5 FS1 PCICLK0 FS2 PCICLK1 SDRAM2 SDRAM3 SDRAM4 SDRAM5 SDRAM6 SDRAM7 SDRAM8 SDRAM9 SDAT...

Page 153: ...60 S3V S3V S3V GND GND GND S3V GND C151 0 1U NA 0603B 1 2 C210 0 1U 0603B 1 2 C195 1U 0603 1 2 C259 0 1U 0603B 1 2 R138 0 NA 0603B_DFS 1 2 RP53 RP10 8 RP_16P8R_4016 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...

Page 154: ...220 NA 0603B 1 2 U23 SDRAM_2M 16 4 NA TSOP54 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 37 34 35 36 31 30 29 28 17 18 19 20 21 27 26 25 24 23 22 16 32 33 38 V...

Page 155: ...J501 FOXCONN MH1174 FS6 NA 1 2 3 4 GND1 GND2 1 2 3 4 GND1 GND2 G D S Q2 NDS9410 SO8 8 7 6 4 5 2 3 1 D S Q3 2N7002 G D S C504 100P 0603B 1 2 L514 BEAD_130Z 100M 0603B 1 2 L515 BEAD_130Z 100M 0603B 1 2...

Page 156: ...RMNN XIRDYNN XTRDYNN XDVSLNN XSTOPNN XPERRNN XSERRNN XINTANN XGNTNN XREQNN PCLK WAKEUP TEST OSCIN REXT APS POENN EECS PMENN PRSTNN R14 75 1 1 2 R15 75 1 1 2 R12 75 1 1 2 R13 75 1 1 2 C281 0 1U 50V 060...

Page 157: ...2 13 14 15 16 R606 1K 0603B 1 2 RP50 0 8 RP_16P8R_4016 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 RP52 0 8 RP_16P8R_4016 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L56 BEAD_120Z 100M 0805C 1 2 RP61 RP10KX4 RP...

Page 158: ...135 130 127 1 178 7 31 64 86 113 143 164 175 187 201 148 120 38 13 22 44 75 96 129 153 167 181 194 207 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 AD16 AD17 AD18 AD19 AD20 A...

Page 159: ...B50 B51 B52 B53 B54 B55 B56 B57 B58 B59 B60 B61 B62 B63 B64 B65 B66 B67 B68 B69 B70 B71 B72 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A...

Page 160: ...0150036 BEAD_320Z 100M 1 2 C73 1U 0603 1 2 C64 1U 0603 1 2 C85 1U 0603 1 2 L10 BEAD_600Z 100M 0603B 1 2 C82 0 1U 0603B 1 2 C97 4 7U 1206 1 2 R58 10K 0603B 1 2 C78 0 1U 0603B 1 2 C508 0 1U NA 1 2 L506...

Page 161: ...5 6 14 16 11 9 8 25 26 27 28 29 30 31 32 33 34 R OUT R OUT L OUT L OUT RVDD LVDD GND0 GND1 GND2 GND3 NC0 NC1 NC2 RLINE IN RHP IN R BYPASS LLINE IN LHP IN L BYPASS SE BTL HP LINE MUTE IN MUTE OUT SHUT...

Page 162: ...IOCS16 MEMCS16 PME SD0 SD1 SD2 SD3 SD4 SD5 SD6 SD7 SD8 SD9 SD10 SD11 SD12 SD13 SD14 SD15 IOR IOW LA23 LA22 LA21 LA20 LA19 LA18 MASTER SMEMW SMEMR SYSCLK REFRESH BALE SBHE MEMR MEMW IRQ14 IRQ15 IRQ12 I...

Page 163: ...M 5 9 4 8 3 7 2 6 1 10 11 FA2 120OHM 100MHZ RPSOA_8C 1 2 3 4 5 6 7 8 FA1 120OHM 100MHZ RPSOA_8C 1 2 3 4 5 6 7 8 CA4 100PX4 RPSOA_8C 1 2 3 4 8 7 6 5 CA3 100PX4 RPSOA_8C 1 2 3 4 8 7 6 5 JL509 JP_NET JP_...

Page 164: ...10 U14 H8 F3434 PQFP100_0 5MM H8 3434F ZTAT 79 78 77 76 75 74 73 72 67 66 65 64 63 62 61 60 82 83 84 85 86 87 88 89 49 50 51 52 53 54 55 56 14 13 12 26 27 28 29 32 33 34 35 38 39 40 41 42 43 44 45 93...

Page 165: ...C 1 2 C25 1000P 0603 1 2 R1 Q9 DTC144TKA SOT23AN_1 2 1 3 R142 15K 0603 1 2 R143 15K 0603 1 2 L511 BEAD_600Z 100M 0603B 1 2 JO538 1 2 JO539 1 2 JO537 1 2 JO540 1 2 JO542 1 2 JO541 1 2 F502 MINISMDC110...

Page 166: ...6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 CE OE VPP WE O0 O1 O2 O3 O4 O5 O6 O7 VCC VSS A17 RP520 RP10KX8 RPSOE_10 1 2 3 4 5 6 7 8 9 10 RP522 RP10KX8 RPSOE_10 1 2 3 4 5 6 7 8 9 10 RP43 RP4 7KX8 RPSOE_10 1...

Page 167: ...21 JP_NET JP_NET15 R188 470K R78 4 7K 0603 1 2 C233 0 1U NA 50V 0603 1 2 U32 LP2951 02BM 8 2 7 3 6 1 5 4 IN SENSE F B SHUTDN 5VTAP OUT ERR GND D19 RLS4148 MLL34B A K D9 BAV99 1 2 3 R77 47K 0603 1 2 R7...

Page 168: ...0603 1 2 JS2 SHORT SMT1 1 2 C252 0 1U 50V 0603 1 2 JS502 SHORT SMT1 1 2 JS501 SHORT SMT1 1 2 JS3 SHORT SMT1 1 2 R549 4 7K 0603 1 2 R550 10K 0603 1 2 C537 1U 0603 1 2 C514 10P 0603 10 1 2 R544 22 0603...

Page 169: ...50V 0603B 1 2 PD1 EC10QS04 DC2010 A K PC93 1U_NA 0805 80 20 1 2 PR50 10_NA 0603 1 2 PD2 EC10QS04 DC2010 A K G D S PU9 SI4835DY SO8 8 7 6 4 5 1 3 2 PU1 MAX4173FEUT T_NA SOT26 1 6 2 3 5 4 GND0 OUT GND1...

Page 170: ...603 10 1 2 PR70 0 0603 1 2 PR55 31 6K 0603 1 1 2 PC107 0 1U 50V 0603 1 2 PR509 33K 0603 1 2 PR59 100K 0603B 1 2 PR57 6 19K 0603 1 1 2 PR6 100K 0603 1 2 PC99 470P_NA 0603 10 1 2 PC101 470P_NA 0603 10 1...

Page 171: ...0603 1 2 PC514 0 1U 50V 0603 1 2 PR11 0_NA 0603 1 2 PR503 0_NA 0603 1 2 PL502 15UH 16 5TS D0 8 CORE_7X13X2SF 1 2 PR29 0_NA 0603 1 2 PC54 1U 10V 0603 1 2 PC10 150U 6 3V 7343 1 2 PR30 0 0603 1 2 PC511 1...

Page 172: ...0603 1 2 PL6 10UH 20 THA02P63B 1 2 PC70 150U 4V 7343 1 2 PC86 10U 10V 1210 1 2 PC78 1000P_NA 0603 1 2 PL7 10UH 4 7A_NA CHOKE_ETQP1F 1 2 PC44 1000P 25V 0603 10 1 2 PC49 0 1U 50V 0603 1 2 PD10 BAS32L A...

Page 173: ...10K 0603 1 1 2 JO501 OPEN SMT2 1 2 JO502 OPEN SMT4 1 2 G D S PQ3 SI4416DY SO8 8 7 6 4 5 2 3 1 PR17 100K NA 0603 1 2 R26 0 NA 0603 0603B_DFS 1 2 R28 0 NA 0603 0603B_DFS 1 2 R559 0 NA 0603 0603B_DFS 1...

Page 174: ...603B 1 2 PC543 150U 4V 7343 20 1 2 PC545 150U 4V 7343 20 1 2 G D S PU20 si4894 SO8 8 7 6 4 5 2 3 1 G D S PU21 si4894_NA SO8 8 7 6 4 5 2 3 1 JS5 SHORT SMT1 JP_SMT1 1 2 JS6 SHORT SMT1 JP_SMT1 1 2 JO564...

Page 175: ...3 8 3 3 7 8 3 5 8 3 2 3 43 63 8 3 3 9 9 3 2 2 5 5 5 5 5 5 5 5 5 2 2 5 5 5 5 5 7 7 8 7 7 7 2 2 88 8 8 8 8 8 8 88 8 8 8 8 8 7 7 7 8 8 8 8 87 7 7 5 5 8 8 7 8 7 8 8 7 8 7 8 5 8 2 2 8 8 8 8 88 8 8 8 8 7 7...

Page 176: ...0 DESCRIPTION OF CHANGE REV 7521 7321 QSB0 KI1 QSB1 KI2 QSB2 KI3 QSB3 KI4 QSB4 KI5 SW_GND KO0 1 Base on RACE QSB trans bd r01 0 1 21 21 1 21 0 21 3 4 3 4 3 4 3 4 3 4 3 4 3 4 5 5 5 5 5 5 6 7 6 5 6 7 6...

Page 177: ...elayout base on R0b 2 Remove one of VDD5S circuit 1 Change PF2 from 125V 5A to 7A 24VDC 08 15 2000 R02 10 26 2000 3 Change PF2 from 6 5A 32V to 125V 5A 0123 4 11 54 21 6 54 57 3 57 3 61 3 1 3 43 3 8 0...

Page 178: ...8 3 Change Batt LED RES to fix orange color 4 Change Mail LED from L 1384AD 1GD and L 1384AD 1YD to L 59BL 1GYW 5 Remove one of VDD5S circuit 08 15 2000 R02 1 Relayout base on R01 09 20 2000 2 Add Q1...

Page 179: ...0 R0A 1 Relayout base on R00 2 Change PF1 from MINISMDC110 to MINISMD0C14 2 3 Change J2 from DF1 3B 2P 1 25v to DF1 3 2P 1 25H 4 ADD C1 C2 for MDC safety R01 1 Relayout base on R0A 09 07 2000 0 1 2 0...

Page 180: ...TERNATIONAL CORP Address 4F NO 18 PU DING ROAD HSINCHU TAIWAN R O C TEL 886 3 5645850 Fax 886 3 5781245 First Edition Aug 2001 E mail Jesse Jan mic com tw SERVICE MANUAL TROUBLESHOOTING GUIDE FOR 7521...

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