MiTAC 7521 B Service Manual & Troubleshooting Manual Download Page 21

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7521

N/B MAINTENANCE

7521

Supports 64 MB SDRAM on board and one 144pin DIMM socket for upgrading up to 320MB

DRAM .

Here are some main memory system essential characteristics:

- One chip 4Banksx1Mx16bit on board

64 MB

- 144-pin S.O. DIMM socket

- Memory Voltage

3.3V

10%

- Banks on DIMM

Total:2

- Mixed type DRAM

Only supports SDRAM

1.2.10 Interface

Power Supply Jack.

One Standard Parallel Port With ECP/EPP Functions

Supports Two USB port for all USB device.

Supports Macrovision’s TV-OUT connector.(layout only)

Tunable volume by variable resistor .

Two Serial Ports, One For COM1/COM2, The Other For FIR/MIR/SIR/SHARP ASK

One External CRT Connector For CRT Display

One PS/2 Interface For External KB, Mouse Or Other Devices

Two Cardbus Sockets

Cable For Connection Between M/B And Panel.

Cable For Connection Between M/B And Backlight BD.

Headphone Out Jack, Microphone Input Jack And Line In Jack.

One MODEM RJ-11 phone jack for PSTN line and RJ-45 for LAN.

Summary of Contents for 7521 B

Page 1: ...SHOOTING GUIDE FOR SERVICE MANUAL TROUBLESHOOTING GUIDE FOR SERVICE MANUAL TROUBLESHOOTING GUIDE FOR 7521 7521 TESTING TECHNOLOGY DEPARTMENT TSSC TESTING TECHNOLOGY DEPARTMENT TSSC BY BY Jesse Jan Jesse Jan MAR 2001 MAR 2001 ...

Page 2: ...NNECTORS SWITCHES 3 DEFINITION LOCATION MAJOR COMPONENTS 4 PIN DESCRIPTIONS OF MAJOR COMPONENTS 5 SYSTEM VIEW DISASSEMBLY 6 MAINTENANCE DIAGNOSTICS 7 TROUBLE SHOOTING 8 SPARE PARTS LIST 9 BLOCK DIAGRAM 10 EXPLODED DRAWING 11 CIRCUIT DIAGRAM P 2 P 40 P 44 P 47 P 60 P 84 P 88 P 120 P 128 P 129 P 130 CONTENTS ...

Page 3: ...PGA package The power management complies with Advanced Configuration and Power Interface ACPI 1 0 It also provides easy configuration through CMOS setup which is built in system BIOS software and can be pop up by pressing F2 at system start up or warm reset System also provides icon LEDs to display system status such as AC Power indicator FDD HDD NUM LOCK CAP LOCK SCROLL LOCK SUSPEND MODE and bat...

Page 4: ...ull set of software drivers and utilities are available to allow advanced operating systems such as Windows 95 or Windows 98 to take full advantage of the hardware capabilities Features such as bus mastering IDE Windows 95 ready Plug and Play Advanced Power Management APM with application restart software controlled power shutdown 1 2 Hardware System 1 2 1 System parts Central Processing Unite usi...

Page 5: ... 48MHz outout for USB and selectable 24 48 MHz output pin25 Two buffer copies of 14 318MHz input reference signal Supports up to 166MHz CPU or SDRAM operation Supports two SDRAM DIMMS Ideal for high performance Desktop Notebook designed using SIS630 chip set I C serial configuration interface 1 2 4 SiS630 Slot 1 Socket 370 2D 3D Ultra AGP Single Chipset The single chipset SiS630 provide a high per...

Page 6: ...h Bridge in SiS630 integrates peripheral controllers accelerators interfaces SiS630 provides a total communication solution including 10 100Mb Fast Ethernet for Office requirement and 1Mb HomePNA for Home Networking SiS630 offers AC 97 compliant interface that comprises digital audio engine with 3D hardware accelerator on chip sample rate converter and professional wavetable along with separate mo...

Page 7: ...le Buffer Strength for CS DQM 7 0 WE RAS CAS CKE MA 14 0 and MD 63 0 Shadow RAM Size from 640KB to 1MB in 16KB incrementss Two Programmable 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 A G P VGA Access Supports 8 Way 16 Entries Page Table Cache f...

Page 8: ... for CPU and PCI Masters Integrated Host to PCI Bridge Zero Wait State Burst Cycles CPU to PCI Pipeline Access 256B to 4KB PCI Burst Length for PCI Masters PCI Master Initiated Graphical Texture Write Cycles Re mapping Reassembles PCI Burst Data Size into Optimized Block Size Fast PCI IDE Master Slave Controller Supports PCI Bus Mastering Native Mode and Compatibility Mode PIO Mode 0 1 2 3 4 Multi...

Page 9: ...Address Decoding Flexible Design Shared Frame Buffer architecture for Display Memory Shared System Memory Area up to 64MB Built in 8K Bytes Texture Cache 32 Bit VLIW Floating Point Primitive Setup Engine Peak Polygon Rate 4M Polygon Sec 1 Pixel Polygon With 16bpp Bilinear Textured Z Buffered and Alpha Blended Supports Flat and Ground Shading Supports High Quality Dithering Supports Z Test Stencil ...

Page 10: ...P Palletize Texture with 32 Bit ARGB Format Supports Fogging and Alpha Blending Supports Hardware Back Face Culling Supports YUV to RGB Color Space Conversion Supports CD DVD to TV Playback Mode Supports DVD Sub Picture Playback Overlay Built in Programmble 24 bits True Color RAMDAC up to 270 MHz Pixel Clock RAMDAC Snoop Function Supports VESA Standard Super High Resolution Graphic Modes 640x480 1...

Page 11: ... bus Translates 8 16 bit DMA cycles into PCI bus cycles Advanced PCI H W Audio Modem Advanced Wavetable Synthesizer DirectSound 3D Advanced Streaming Architecture High Quality Audio and AC 97 98 Support Full Legacy Compatibility Telephony Modem Software support Meets ACPI 1 0 Requirement Meets APM 1 2 Requirement ACPI Sleep States Include S1 S2 S3 S4 S5 CPU Power States Include C0 C1 C2 C3 Power B...

Page 12: ...patible DMA Controller 8 16 bit DMA data transfer Distributed DMA Support Integrated Interrupt Controller Two 8237A Compatible DMA Controller Two 8259A Compatible Interrupt Controllers Level or Edge Triggered programmable Serial IRQ Interrupt Source Re routable to Any IRQ channel Three 8254 Compatible Programmable 16 bits counters System timer interrupt Generate refresh request Speaker output ...

Page 13: ... Hot Key KBC and PS2 mouse can be individually disabled Integrated Real Time Clock RTC with 256B CMOS SRAM Supports ACPI Day Month and Month of Year Alarm 256 Bytes of CMOS SRAM Provides RTC H W Year 2000 Solution Universal Serial Bus Host Controller Open HCI Host Controller with Root Hub Two USB Host Controller Five USB Ports Supports Legacy Devices Over Current Detection ...

Page 14: ... for Automatic Speed Selection Full Duplex and Half Duplex Mode for both 10 and 100 Mbps Fully Compliant Ansi X3 263 Tp Pmd Physical Sub Layer which includes adaptive Single 25mhz Clock for 10 and 100 Mbps Operation Power Down of 10 base T 100base Tx sections when not in use Supports 10base Tx 100base Tx 1 2 5 Super IO NS PC 97338VJG High speed PC16550A compatible UART with receive transmit 16 Byt...

Page 15: ... rate max 4Mb Link distance 0 01 to 1 m Half angle 15 Βιτ Error Rate BER 10 9 Peak wavelength 0 85 0 90 mm TQFP 100 pins Standby mode control by software Default configuration IO address IRQx DRQx COM1 3F8 3FF 4 FIR MIR SIR SHARP ASK 278 27F 3 COM2 PIO 378 37F 7 FDD 3F0 3FF 6 2 ...

Page 16: ... Switch Supports up to 5 general 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 cardbus Support PCI Bus Lock LOCK 3 3 V core logic with universal PCI interface PCI Local Bus Specification Revision 2 1 compliant Fully compatible with the Intel 430TX Mobil...

Page 17: ...Vpp Switching for Dual Slot PC Card Interface P 2 C3 Lead Serial Interface Compatible With CardBus Controllers 3 3 V Low Voltage 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 32 Pin TSSOP DAP Compatible With 3 3 V 5 V and 12 V PC Cards Lower DS on 140 ...

Page 18: ... and 1KB RAM 16 bit free running timer One 16 bit free running counter Two output compare lines Four input capture lines 8 bit timer 2 channels Each channel has one 8 bit up counter two time constant registers PWM timer 2 channels Resolution 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...

Page 19: ...gle or scan mode selectable D A converter 8 bit resolution 2 channels Interrupts nine external interrupt lines NMI IRQ0 to 7 26 on chip interrupt sources Power down modes Sleep mode Software 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 Support SMI SCI tri...

Page 20: ...P 1 2 9 Memory System 1 2 9 1 Main Memory HYUNDAI GM72V281641AT 7K SDRAM NEC UPD45128163G5 A80 9JF SDRAM one chip memory size 4Banksx1Mx16bit SDRAM Standard 54 pin TSOP II package Power supply 3 0 3V Supports One JEDEC 144 pin S O DIMM sockets 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 ...

Page 21: ...k One Standard Parallel Port With ECP EPP Functions Supports Two USB port for all USB device Supports Macrovision s TV OUT connector layout only Tunable volume by variable resistor Two Serial Ports One For COM1 COM2 The Other For FIR MIR SIR SHARP ASK One External CRT Connector For CRT Display One PS 2 Interface For External KB Mouse Or Other Devices Two Cardbus Sockets Cable For Connection Betwee...

Page 22: ...rd disk One CD ROM connector on M B 1 2 11 Audio System AC 97 CODEC CS4299 AC 97 CODEC CS4299 provides a complete high quality audio solution Feature Include MPU 401 interface FM synthesizer Game Port MIDI port MODEM CD ROM User Defined GPIO Volume Control 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...

Page 23: ...HSDL 3600 007 Fully Compliant to IrDA 1 1 Specifications 115 2 kb s to 4 Mb s operation excellent nose to nose operation Compatible with ASK HP SIR and TV Remote IEC825 Class 1 Eye Safe Wide Operating Voltage Range 2 7 V to 5 25 V Small 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 dri...

Page 24: ...ect pin switch to FIR Integrated EMI Shield Excellent noise immunity Edge Detection Input Prevents the LED from long turn on time Interface to various Super I O and Controller Devices Designed to Accommodate Light Loss with Cosmetic Window Minimum External Components Required ...

Page 25: ...ing simultaneously display Fn F6 Brightness down Decreases the LCD brightness No function in DSTN model Fn F7 Brightness up Increases the LCD brightness No function in DSTN model Fn F10 Enable Disable Battery Toggle Battery Warning on off Warning Beep Fn F11 Panel Off On Toggle Panel Off On Fn F12 Suspend to DRAM HDD Force the computer into either Suspend to HDD or Suspend to DRAM mode depending o...

Page 26: ...tton or function Recognizable Signal Determined by Software component ESB1 Entertainment Quick Key Determined by Software component ESB2 Instant Internet Determined by Software component ESB3 My Presario Determined by Software component ESB4 Search Determined by Software component ESB5 Email Determined by Software component ...

Page 27: ... 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 This LED lights green when the notebook is being powered by batteries and flashes on 1 second off 1 second when Suspend to DRAM is active using battery power The LED is off when the notebook is off or powered b...

Page 28: ...iptions of the SMM and power management modes supported 1 3 1 1 Full On Mode In this mode each device is running with the maximal speed CPU clock is up to its maximum 1 3 1 2 Doze Mode In this mode CPU will be toggling between on stop grant mode either The technology is clock throttling This can save battery power without loosing much computing capability The CPU power consumption and temperature ...

Page 29: ...wer saving In this mode the following is the status of each device 1 3 1 4 1 Suspend to DRAM CPU off SiS630 Partial off VGA off PCMCIA off Super IO off Audio off SDRAM Self Refresh 1 3 1 4 2 Suspend to HDD All devices are stopped clock and power down System status is saved in HDD All system status will be restored when powered on again ...

Page 30: ...er 2 seconds System beeps only if BIOS setup enable Battery Warning Beeping System will Suspend to HDD after 2 Minute if BIOS setup enable this function or system will runs until battery dead without any protection 1 3 1 5 3 Cover Switch System automatically provides power saving on monitoring Cover Switch It will save battery power and prolong the usage time when user closes the notebook cover un...

Page 31: ...er to extend the battery packs life 1 3 2 System BIOS 1 3 3 Fan power on off management FAN is controlled by H8 embedded controller which using LM45 to sense CPU temperature and PWM to control fan speed 1 4 Power Supply System Please refer to the document for 7521 adapter DC to DC and backlight BD 1 5 Peripheral Components 1 5 1 LCD PANEL Hyundai 14X13 1024X768 XGA TFT Panel Display size diagonal ...

Page 32: ...linders 14 784 Bytes per sector 512 Recording method 16 17 MTR Track density 24 300 TPI Bit Density 383 Kbpi Rotational Speed 4 200 rpm 1 Average Latency 7 14 ms Interface ATA 5 Max Cable length 0 46 m Data transfer rate To From Media 12 5 to 22 3 MB s To From Host 66 6 MB s Max Ultra DMA mode 4 Data Buffer Size 512 KB Spin up current 0 9Arms Max Power Consumption 4 5W During spin up Physical Dime...

Page 33: ...board Key pitch 19 mm Windows95 applied Internal keyboard Compatible Japanese keyboard layout 90 keys 1 5 4 Floppy Disk Drive Mitsumi D353G Using High density 2HD 3 5 inch disk Data transfer rate 500k bits sec Disk rotational speed 300 rpm for 2mode 360rpm for 3mode Track density 135 tpi Track to Track time 3msec ...

Page 34: ... 24X CD ROM Drive 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 specification IDE second channel 170h The default drive is D User should install the CD ROM device driver in order to operate this device This CD ROM drive also support audio interface Co operat...

Page 35: ...tremely low weight of 230g Low average power consumption of 2 4W maximum only 3 2W 1 5 7 DVD ROM drive MATSUSHITA UJDA520L SH 4X speed 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 Mbyte s DMA Multi word DMA transfer mode 2 Transfer Rate 16 7 Mbyte s Ultra DMA mode 2 Transfer Rate 33 3 Mbyte...

Page 36: ...de 0 Write 150KB s Normal speed 300KB s 2X speed 600KB s 4X speed Buffer memory 2MB Access speed 150ms Typ 1 5 9 LED Indicators Lower ICON LEDs on M B Mail Received status left 1 AC POWER Left 2 BATTERY POWER right 2 BATTERY STATUS right 1 Upper ICON LEDs on M B CD ROM MO left 1 HARD DISK DRIVE left 2 FLOPPY DISK DRIVE left 3 NUM LOCK right 3 CAPS LOCK right 2 SCROLL LOCK right 1 ...

Page 37: ...attery in CMOS battery will no power consumption AC or main battery not exist CMOS battery life at less 220mAh 5 8uA 4 years In normal condition battery life is at less over 4 years Battery was put in battery holder can be replaced 1 5 12 Serial Interface Using AD ADM3311ARU chip ESD rating 3KV Lead TEMP Soldering 10sec 300 Number of RS 232 drivers 3 Number of RS 232 receivers 5 28 pin SSOP packag...

Page 38: ...tions should be no evidence of breakage and Cracks on the component In 55 96h life test conditions should be no evidence of breakage and Cracks on the component 1 5 14 FAN Dimension Made by 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 C W Noise...

Page 39: ...EEDO FOR LAN In In Defined Off Off GPIO 4 KBD_US JP In In Defined Off Off GPIO 5 GPIO5 In In Defined Off Off GPIO 6 EXTSMI In In Defined Off Off GPIO 7 SPDIF SPDIF enable In In Defined Off Off GPIO 8 GPIO8 In In Defined Off Off GPIO 9 GND In In Defined Off Off GPIO 10 FDD_MODE In In Defined Off Off GPIO 11 SPK_OFF In In Defined Off Off GPIO 12 RS232_OFF In In Defined Off Off GPIO 13 CARD_IN In In ...

Page 40: ...D0 Vendor PANEL 1 1 1 HUYNDAI 14X13 Description Note 3 CPU SDRAM Frequency setting table SW_FS3 SW_FS2 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 1 6 Appendix 2 GPIO definitions GPI DEFINITIONS ...

Page 41: ... panel connector J3 Quick key transfer BD connector SW1 Cover Suspend SW SW2 Power button J4 External MIC in connector J5 Internal keyboard connector J6 144 pins expansion SDRAM socket J2 J3 J4 SW2 U2 J5 J6 J1 SW1 OFF ON 1 2 DIP SW DIP SW CPU FSB SELECT ON OFF ON OFF DIP SW BIT2 ON ON OFF OFF DIP SW BIT1 100MHZ 150MHZ 66MHZ 133MHZ FSB ...

Page 42: ... J507 VGA Connector J513 CD ROM drive connector J514 Charger Touch Pad connector J515 Touch Pad button connector BT501 CMOS Battery connector VR501 Volume control VR U501 PJ501 J502 J508 J505 J507 J504 J506 J503 J509 J510 VR501 U507 J516 J513 J512 J514 J515 BT501 J511 U502 U503 J508 USB connector U507 PC card socket U503 CPU CPU Socket J511 MODEM transfer board connector J512 FAN Connector J516 HD...

Page 43: ...TION LOCATION OF CONNECTORS SWITCHES MDC LAN transfer board JP1 MDC jump wire connector JP3 Connector 2 for connected MDC LAN transfer board to M B J1 RJ 11 phone jack for internal modem J23 MDC jump wire connector 2 3 Daughter Board J1 J23 JP1 U2 U1 JP3 ...

Page 44: ...ON LOCATION OF CONNECTORS SWITCHES 2 4 Charger Board Charge board side B J500 Touch Pad button connector SW500 CMOS Reset Charge board side A J1 PJ4 J2 J500 SW500 J1 Charger Touch Pad connector to M B PJ4 Battery pack connector J2 Internal speaker connector ...

Page 45: ...VGA LVD controller U5 CS4299 AC 97 CODE U6 TPA0202 AUDIO AMP U12 H8 3434F universal U6 U12 U2 U17 U31 U27 U28 U22 U13 U15 U20 U25 U29 U16 U21 U26 U30 U1 U5 U31 W83626 LPC to ISA U15 U20 U25 U29 On board SDAM U13 ICS9248 102 Frequency Synthesizer U17 TPS2206 PCcard Power switch matrix U22 SiS630 single chipset U27 Super IO PC97338VJG U28 System BIOS ...

Page 46: ...7521 N B MAINTENANCE N B MAINTENANCE 3 DEFINITION LOCATION OF MAJOR COMPONENTS 3 2 Main Board SIDE B U502 PH163112 LAN Controller U503 Socket 370 CPU U505 PCI1225PDV PC CARD interface controller U505 U502 U503 ...

Page 47: ... N B MAINTENANCE N B MAINTENANCE 3 3 Definition Of Daughter Board Charger board side B Charger board side A MDC LAN transfer board 3 DEFINITION LOCATION OF MAJOR COMPONENTS J1 J23 JP1 U2 U1 JP3 J500 SW500 J1 PJ4 J2 ...

Page 48: ...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 external timing parameters are specified with respect to the BCLK signal Signal Name I O Signal Description BERR I O GTL The BERR Bus Error signal is asserted to indicate an unrecoverable error without a bus...

Page 49: ... to indicate a valid data transfer Signal Name I O Signal Description DBSY I O GTL The DBSY Data Bus Busy signal is asserted by the agent responsible for driving data on the system bus to indicate that the data bus is in use The data bus is released after DBSY is deasserted This signal must be connected to the appropriate pins balls on both agents on the system bus DEFER I GTL The DEFER Defer sign...

Page 50: ... to inactive transition then the processor executes its built in self test BIST Signal Name I O Signal Description INTR I 1 5V Tolerant The INTR Interrupt signal indicates that an external interrupt has been generated INTR becomes the LINT0 signal when the APIC is enabled The interrupt is maskable using the IF bit in the EFLAGS register If the IF bit is set the processor vectors to the interrupt h...

Page 51: ...se PWRGOOD Relationship at Power On Signal Name I O Signal Description REQ 4 0 I O GTL The REQ 4 0 Request Command signals must be connected to the appropriate pins balls on both agents on the system bus They are asserted by the current bus owner when it drives A 35 3 to define the currently active transaction type RESET I GTL Asserting the RESET signal resets the processor to a known state and in...

Page 52: ... power Stop Grant state The processor issues a Stop Grant Acknowledge special transaction and stops providing internal clock signals to all units except the bus and APIC units The processor continues to snoop bus transactions and service interrupts while in the Stop Grant state When STPCLK is deasserted the processor restarts its internal clock to all units and resumes execution The assertion of S...

Page 53: ...code the voltage required in the battery optimized mode VID 4 0 are needed to cleanly support voltage specification changes on mobile Pentium III processors The voltage encoded by VID 4 0 is defined in Table 39 A 1 in this table refers to an open pin ball and a 0 refers to a short to VSS The power supply must provide the requested voltage or disable itself Please note that in order to implement VI...

Page 54: ...henever 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 Plane Type Attr Description BPRI 1 5V MAIN O GTL Priority Agent Bus Request BPRI is driven by the priority agent that wants to request the bus BPRI has higher priority than BREQ0 to access a bus CPURST 1 5V M...

Page 55: ...s out Even Paritycovering AD 31 0 and C BE 3 0 It does not check the input parity signal FRAME 3 3V 5V MAIN I O Frame FRAME is an output when the SiS Chip is a PCI bus master The SiS Chip drives FRAME to indicate the beginning and duration of an access When the SiSChipis a PCI slave device FRAME is an input signal IRDY 3 3V 5V MAIN I O Initiator Ready IRDY is an output when the SiS Chip isa PCI bu...

Page 56: ...er Plane Type Attr Description IIOW A B 3 3V MAIN O Primary Secondary Channel IOW Signals ICHRDY A B 3 3V 5V MAIN I Primary Secondary Channel ICHRDY Signals IDREQ A B 3 3V 5V MAIN I Primary Secondary Channel DMA Request Signals IDACK A B 3 3V MAIN O Primary Secondary Channel DMACK Signals IIRQ A B 3 3V 5V MAIN I Primary Secondary Channel Interrupt Signals IDSAA 2 0 3 3V MAIN O Primary Channel Addr...

Page 57: ... 31 Digital Video Horizontal Sync VMD30 VBVSYNC 3 3V MAIN I O I O Display Memory Data Bus bit 30 Digital Video Vertical Sync VMD29 DDC2CLK 3 3V MAIN I O I O Display Memory Data Bus bit 29 Second Display data channel clock line VMD28 DDC2DATA 3 3V MAIN I O I O Display Memory Data Bus bit 28 Second Display data channel data line VMD 27 0 3 3V MAIN I O Display Memory Data Bus bits 27 0 Name Tolerance...

Page 58: ...nternal keyboard controller is enabled this pin is used as the keyboard data signal General Purpose Input Output 10 Refer to GPIO description KBCLK GPIO11 3 3V 5V AUX I OD I O OD Keyboard Clock When the internal keyboard controller is enabled this pin is used as the keyboard clock signal General Purpose Input Output 11 Refer to GPIO description Name Tolerance Power Plane Type Attr Description PMDA...

Page 59: ...s a 48KHz signal which is used to syncronize the Codecs SPDIF GPIO7 3 3V 5V MAIN O I O OD S PDIF Transmitter Output General Purpose Input Output 7 Refer to GPIO description Fast Ethernet andHomenetworking interface Name Tolerance Power Plane Type Attr Description EECS 3 3V AUX O Serial EEPROMChipSelect Thisenables the EEPROMduring loadingof the Ethernet configurationdata EEDI 3 3V AUX O Serial EEP...

Page 60: ...Q1 GPIO2 3 3V 5V MAIN I I I O OD USB Port 3 Over Current Detection OC3 is used to detect the over current condition of USB Port 3 LPC DMA Request 1 LDRQ1 is the second LPC DMA request signal used by LPC Device to request DMA cycles General Purpose Input Output 2 Refer to GPIO description USBP 4 0 P 3 3V AUX I O USB Port 4 0 Positive Input Output USBP 4 0 N 3 3V AUX I O USB Port 4 0 Negative Input ...

Page 61: ...m View and Disassembly 5 1 System View 5 1 1 Front View Mail Received Button Indicator Power Indicators Top Cover Latch 5 1 2 Left Side View Audio Input Connector Microphone Connector Audio Output Connector Volume Control PC Card Slots Floppy Disk Drive ...

Page 62: ...TENANCE N B MAINTENANCE 5 1 3 Right Side View Battery Pack CD ROM DVD ROM Drive IR Port 5 1 4 Rear View Power Connector PS 2 Port USB Ports Parallel Port Serial Port RJ 45 Connector VGA Port RJ 11 Connector Kensington Lock ...

Page 63: ...7521 N B MAINTENANCE N B MAINTENANCE 5 1 5 Bottom View CPU Cover Modem Card Cover FDD HDD Module Battery Pack 5 1 6 Top Open View LCD Screen Power Button Keyboard Touchpad Stereo Speaker Set Easy Start Buttons ...

Page 64: ...nents 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 Modular Components LCD Assembly Components Base Unit Components NOTEBOOK 5 2 1 Battery Pack 5 2 2 CPU 5 2 3 Modem Card 5 2 4 FDD HDD Module 5 2 5 CD ROM Drive 5 2 6 Keyboard 5 2 7 SO DIMM 5 2 8 LCD Assembly 5 2 9 LCD P...

Page 65: ...g button to the unlock position then slide and hold the latch in the unlock position and pull the battery pack out of the compartment figure 5 1 Figure 5 1 Reassembly 1 Push the battery pack into the compartment The battery pack should be correctly connected when you hear a clicking sound 2 Turn the locking button to the lock position ...

Page 66: ...ly put the notebook upside down 2 Remove two screws locking the CPU compartment cover and then lift the cover up figure 5 2 Figure 5 2 Figure 5 3 3 Remove four screws fastening the heatsink and disconnect the fan s power cord to free the heatsink from the CPU module figure 5 3 ...

Page 67: ... 5 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 and push the screwdriver toward the CPU to secure the CPU in place 2 Connect the fan s power cord to the system board fit the heatsink onto the top of the CPU and secure with four screws 3 Replace the CPU ...

Page 68: ...ard 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 5 5 Figure 5 5 Figure 5 6 3 Remove one screw fastening the connector board and the grounding cable figure 5 6 ...

Page 69: ... 7 Figure 5 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 opening on the notebook Insert the connector into the opening and secure with a screw which fastening both the connector board and the grounding cable 3 Replace the compartment cover and secure with one scre...

Page 70: ...21 7521 N B MAINTENANCE N B MAINTENANCE 5 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 5 8 Figure 5 8 ...

Page 71: ... figure 5 9 Figure 5 9 Figure 5 10 4 Remove four screws to separate the hard disk drive from the metal shield figure 5 10 Reassembly 1 To install the hard disk drive place it in the bracket and secure with four screws 2 Connect the hard disk to the connector on the FDD HDD module and secure with two screws 3 Slide the FDD HDD module into the compartment and secure with one screw ...

Page 72: ...e battery pack See section 5 2 1 Disassembly 3 Remove the modem card See section 5 2 3 Disassembly 4 Remove the FDD HDD module See step 2 in section 5 2 4 Disassembly 5 Remove one screw locking the CD ROM and then the other twelve screws locking the base unit frame figure 5 11 Now you can lift the base unit frame up Figure 5 11 ...

Page 73: ...OM 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 5 2 4 Reassembly 4 Replace the modem card See section 5 2 3 Reassembly 5 Replace the modem card See section 5 2 3 Reassembly 6 Replace the battery pack See section 5 2 1 Reassembly ...

Page 74: ...to unlatch the Easy Start panel push it leftward and lift it up from the left side figure 5 13 Figure 5 13 Figure 5 14 3 Slightly lift up the keyboard and disconnect the cable from the system board to detach the keyboard Reassembly 1 Reconnect the keyboard cable and fit the keyboard back into place 2 Replace the Easy Start panel ...

Page 75: ...lips outwards and remove the SO DIMM figure 5 15 Figure 5 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 into the socket at 20 degree angle Then push down until the retaining clips lock the SO DIMM into position 2 Replace the keyboard and the Easy Start panel See section 5 2 6 Reassembly ...

Page 76: ...on 5 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 5 16 Figure 5 16 Figure 5 17 3 Open the top cover Unplug the three cable connectors coming from the LCD assembly and remove four screws of the hinges Now you can separate the LCD assembly from the base unit figure 5 17 ...

Page 77: ...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 covers 4 Replace the Easy Start panel ...

Page 78: ... 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 from the inverter board figure 5 19 Reassembly 1 Fit the LCD panel back into place and secure with four screws and reconnect the cable to the inverter board 2 Fit the LCD frame back into the housing and repla...

Page 79: ...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 5 20 Figure 5 20 Reassembly 1 Fit the inverter board back into place and secure with two screws 2 Reconnect the cables 3 Replace the LCD frame See section 5 2 9 Reassembly 4 Replace the LCD assembly See section 5 2 8 Reassembly ...

Page 80: ...Remove the LCD assembly See section 5 2 8 Disassembly 3 Remove seven screws and then take out the Easy Start board figure 5 21 Figure 5 21 Figure 5 22 4 Remove four screws on the rear side of the notebook figure 5 22 5 Remove the battery pack heatsink modem card FDD HDD module and CD ROM drive See section 5 2 1 to 5 2 5 Disassembly ...

Page 81: ...ENANCE 6 Remove six screws and two hexnut screws fastening the metal shield and then lift the shield up from the system board carefully figure 5 23 Figure 5 23 Figure 5 24 7 Lift up the speaker assembly and disconnect the cable figure 5 24 ...

Page 82: ...nnect the cable of the touchpad Now you can lift the system board up from the base unit figure 5 26 Reassembly 1 Fit the system board into place and secure with two screws 2 Reconnect the touchpad s cable 3 Replace the metal shield and secure with six screws and two hexnut screws 4 Replace the recharge board and secure with four screws 5 Replace the speaker assembly and reconnect the cable ...

Page 83: ... 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 board into the housing then secure with seven screws 10 Replace the LCD assembly 11 Replace the keyboard and Easy Start panel ...

Page 84: ...See section 5 2 11 Disassembly 2 Remove the four screws to lift up the touchpad holder and touchpad panel figure 5 27 Figure 5 27 Reassembly 1 Replace the touchpad holder and touchpad panel and secure with four screws 2 Replace the system board and assemble the notebook See section 5 2 11 Reassembly ...

Page 85: ...n If the error occurs before the message displayed on the screen If the error occurs before the display display is initialized then the screen cannot display the error message is initialized then the screen cannot display the error message Error Error codes or system beeps are used to identify a post error that occ codes or system beeps are used to identify a post error that occurs urs when the sc...

Page 86: ...eset 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 6845 regs CODE DESCRIPTION 1Dh Initialize color adapter 1Eh Initialize monochrome adapter 1Fh Test 8237A page registers 20h Perform keyboard self test 21h Test initialize keyboard controller 22h Chec...

Page 87: ...tus 3Fh OEM initialization of COMM and LPT ports 40h Configure the COMM and LPT ports 41h Initialize the floppies 42h Initialize the hard disk 43h OEM s init of PM with USB 44h Initialize additional ROMs 45h Update NUMLOCK status 46h Test for coprocessor installed 47h OEM s init of power management check SMI 48h OEM functions before boot PCMCIA CardBus 49h Dispatch to operation system boot 4Ah Jum...

Page 88: ...N 13 SLCT PIN1 STROBE PIN 13 SLCT PIN10 ACK PIN 16 INT PIN10 ACK PIN 16 INT PIN11 BUSY PIN 17 SELIN PIN11 BUSY PIN 17 SELIN PIN12 PTERR PIN 14 AUTOFD PIN12 PTERR PIN 14 AUTOFD PIN 9 2 PD 7 0 PIN 9 2 PD 7 0 6 6 3 2 3 2 CIRCUIT CIRCUIT PIO PIO CONNECTOR CONNECTOR LED LED 1 1 13 13 14 14 25 25 P N 411904800001 DESCRIPTION PWA PWA 378PORT DEBUG BD Note Order it from MIC TSSC OR ...

Page 89: ...NTROLLER FAILURE LCD NO DISPLAY 7 4 EXTERNAL MONITOR NO DISPLAY 7 5 MEMORY TEST ERROR 7 6 KEYBOARD TEST ERROR OR TRACK PAD TEST ERROR 7 7 CD ROM DRIVE TEST ERROR 7 8 HARD DRIVE TEST ERROR 7 9 USB PORT TEST ERROR 7 10 AUDIO FAILURE 7 11 SIO PORT TEST ERROR 7 12 PIO PORT TEST ERROR 7 13 PC CARD SOKET FAIL ...

Page 90: ...E N B MAINTENANCE 7 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 OUTLET MOTHER BOARD Charge B D J514 J1 ...

Page 91: ... PU9 PQ7 PQ9 PL502 PU501 P27 PU9 PQ7 PQ9 PL502 S5V_P P27 PQ3 5V P29 J01 S5V P29 PQ501 12V P29 PL5 PU14 PU5 PU6 PU7 PU10 PU11 PU12 P30 VCC_CORD 7 1 NO POWER When the power button is pressed nothing happens power indicator does not light up PU13 PU3 1 5V P28 JO11 1 8V P29 P29 Page 29 on circuit diagram PD1 PD3 PL4 Through by parts PD1 PD3 PL4 Note L25 ICVCC P5 L23 LVDSVCC P5 L11 PLLVCC P5 L532 DACAV...

Page 92: ..._VDDIN SW_VDD5 FROM H8 VDD5 S G D SW_VDD5 5V F5 R233 0 U32 LP2951 02BM 8 2 7 3 6 1 5 4 X C235 4 7U Q26 Q25 DTC144WK 3 2 1 D S G 3 1 2 ADEN _P BATT 1 4 5 6 7 8 2 3 PJ4 6 PF1 6 5A 32VDC PR2 301K PC5 0 1U 50V PR1 100K PU8 SI4435DY PR21 33K PR20 100K BAT_V BATTERY IN RP22 38 BAT_V POWER IN PL1 120Z 100M D S G LEARNING PR10 1M PQ5 2N7002 PR11 120K G 4 6 7 8 2 3 S D 1 5 PR12 470K PR18 715K PR17 100K PC6...

Page 93: ...rce 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 troubleshooting Replace the faulty battery charger board or AC adapter Board level troubleshooting for no power Next Page 1 Check the power source from battery circuit From mother board J514 check the following sig...

Page 94: ...rce from AC adapter PJ501 POWER OK END NO YES If D VMAIN failure If VCC_CORE CPUVCC failure If S12V S5V_P or S3V_P failure If 1 5V 1 8V Failure If VDD5 failure CHECK PD1 PD3 PL4 PC16 PR20 PR21 PQ12 PU8 PC15 PC33 CHECK PL5 PU14 PU5 PU10 PU6 PU11 PU7 PU12 PD7 PL8 PR29 PR44 PC50 PC49 PC48 PC47 PC46 CHECK PU9 PQ7 PQ9 PL502 PD501 PU501 PR4 PQ502 PQ503 PL501 PR2 PD6 PD505 CHECK PU13 PU3 PU4 PD9 PD10 PD5...

Page 95: ...roubleshooting 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 or reset circuit and major chip for any cold solder NO Refer to the error code description and find out the error YES 1 Check if power system is O K 2 Remove all the I O device from system YES NO Reboot and display OK Check switch setting or replace a known go...

Page 96: ... R139 R98 9 17 26 14 318MHz X4 C158 4 5 CPUCLK 630PCLK CLK14_VGA USB_48MHZ 5 20 R140 21 R141 28 R92 29 R91 SDRAMCLK2 SDRAMCLK3 A18 AJ14 AJ15 J1 25 R144 2 630SDCLK AG1 R99 IO_48MHZ 32 768K H1 H2 C597 C606 R596 X501 X3 R113 B5 A5 25M SDRAMCLK0 SDRAMCLK1 J6 U16 U21 U26 U30 U15 U20 U25 U29 U505 TI1225 PCMCIA CONTROLLER 11 R137 PCLKCARD 180 U31 LPC TO ISA W83626F 12 R138 LPC2ISACLK 21 ISA 14M 26 48 R10...

Page 97: ...32 R133 D11 R84 3V 3V 5V U18 CPURST 18 14 U31 LPC TO ISA 14 PCIRST U27 Super I O PC97338VJG RSTDRY 77 100 U505 PCMCIA CARDBUS CONTROLLER TI 1225 JL21 PCIRSTNS 166 U17 POWER SWITCH MATRIX 14 U5 CODEC CS4299 11 U504 MAX809 VCC RESET GND VDD5 H8_RESET R57 ARST 23 R577 SW2 POWERBTN R570 7521 Power Module 7 2 NO DISPLAY Power Good Reset System U14 MAX809 VCC RESET GND SIS PWROK R126 R146 SIS_PWRBTN Q11...

Page 98: ... R525 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 6 7 8 4 S G D 1 2 D S G FPVCC R5 5V 12V R8 Q3 3V Q4 L4 ENABKL_VGA SW1 ENABKL_VGA U12 H8 BLADJ 4 45 1 LID_OPEN 24 LCD 5V L15 2 3 J1 3V R190 Q16 Q20 Q5 3V 3V R19 R196 7 3 VGA CONTROLLER FAILURE LCD NO DISPLAY There is no display or picture abnormal on LCD J2 LC...

Page 99: ...into board level Troubleshooting YES 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 at a time and test after each replacement Parts U22 U2 U12 J1 J2 Q20 Q16 Q5 Q4 Q3 SW1 R19 R190 R196 L4 R8 R5 L25 L23 L11 Signals TXCLKOUT TXCLKOUT TXOUT0 TXOUT0 TXOUT1 TXOUT1 TXOUT2 TXOUT2 Check if U22 U2 J1 ...

Page 100: ... S RED GREEN BLUE HSYNC VSYNC DDDA DDCK Q23 Q22 L514 L511 L510 L509 L515 L513 L508 5V R256 R261 3V R518 R516 CRT_IN J506 1 2 3 13 14 12 15 10 7 4 EXTERNAL MONITOR NO DISPLAY There is no display or picture abnormal on CRT monitor CRT MONITOR C504 R621 0 R620 R205 R206 ...

Page 101: ...sing the problem YES NO YES NO Replace motherboard or into board level Troubleshooting YES 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 at a time and test after each replacement Parts U22 J506 R516 R518 C504 L514 L511 L510 CA502 CA10 Signals Check if U22 J506 are cold solder CRT_IN RED GRE...

Page 102: ...0 SMDATA SMCLK U13 ICS9248 102 Clock Synthesizer MD 0 63 SDRAMCLK 0 3 DCLK 2 3 DCLK 0 1 MAB 0 14 DQMA 0 7 CS 0 3 SRASA SCASA CSA 2 3 CSA 0 1 U509 74LVC244 CKE R591 8 2K S3V CKE 0 1 CKE 2 4 ON BOARD 64MB SDRAM U16 U21 U26 U30 U15 U20 U25 U29 J6 RP21 RP24 RP26 RP27 RP39 RP42 RP51 RP50 CSA 0 3 RP38 WEA 144 PIN SODIMM R181 R167 R185 R139 SDCLK ...

Page 103: ...ect it YES Board level Troubleshooting for Memory 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 at a time and test after each replacement Parts U22 U13 U15 U16 U20 U21 U25 U26 U29 U30 RP21 RP24 RP26 RP27 RP39 RP42 RP51 RP50 RP38 J6 U509 Signals MDR 0 ...

Page 104: ...Q12 SD 0 7 H8_KBCS 3V RP519 U31 LPC TO ISA W83626F KBD_US JP X2 16MHz TOUCH PAD MODULE SW2 SW3 U508 74CBTD 3384 97 96 53 54 2 3 KBCS 95 25 H8 T_DATA L56 L57 J515 R245 R246 5V C245 H8 T_ CLK SW2 SW1 L58 57 10 J500 T P SWITCH B D CHARGE B D SW B D QSB0 QSB1 QSB2 QSB3 QSB4 BAT_D BAT_C J3 U35 W83601R 10 9 7 6 5 15 14 RP22 5V C9 L3 F1 K M CLK M DATA M CLK K M DATA 68 58 20 11 FA5 1 2 5 6 4 J502 PS 2 Mo...

Page 105: ... 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 at a time and test after each replacement Parts U12 U31 R162 R161 L57 L56 L23 C171 R246 R254 J4 U17 L58 C245 CHARGE BD RP519 J5 SWITCH BD Signals KI 0 7 IOW KO 0 15 IOR H8 T_DATA IRQ1 H8 T_CLK IRQ12 H8_KBCS SD...

Page 106: ...OM drive CD ROM U22 SIS 630 SDDACK SDIOR SDDREQ SDCS 1 3 SDIOW SDD 0 15 SIORDY IRQ15 RP55 RP47 RP48 RP49 RST_CDROM J513 5VS_CDROM D S G Q31 Q33 SDA 0 2 RSDDACK RSDIOR RIRQ15 RSDDREQ RCS 1 3 S RDDS 0 15 RSDIOW RDAS 0 2 25 22 24 28 29 27 SIDE_UP 47 R613 CD_RST SIORDY 5VS_CDROM R610 5V 5VS_CDROM C641 1U C645 1U 38 39 40 41 5 JS501 ...

Page 107: ... 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 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 U22 Q33 RP55 RP47 RP48 RP49 R611 R227 R610 R613 C641 ...

Page 108: ... D S G Q30 Q29 R242 5V PDA 0 2 RPDDACK RPDIOR RIRQ14 RPDDREQ RCS 1 3 P RDDP 0 15 RPDIOW RDAP 0 2 22 24 20 16 14 18 PIDE_UP 47 R244 HARD DRIVE 7 8 HARD DRIVE TEST ERROR Either an error message is shown or the driver motor continues spinning while reading data is from or writing data is to hard drive 5VS_HDD R243 PIORDY 44 C237 1U C238 1U JS14 5V 5VS_HDD 1 3 4 ...

Page 109: ...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 YES NO Check if HDD s cable installed to HDD and system properly J516 Re boot OK Replace the faulty parts then end YES NO 1 Try another known good HDD 2 Try another known good HDD s Transulation cable Parts U2...

Page 110: ...ce is installed U22 SIS 630 5V F502 L2 R26 R27 C21 C11 USB_OC0 USB_B1 USB_A1 C19 C28 L13 USB_OC1 5V F503 R22 R23 CP7 RP25 USBP0 USBP0 USBP1 USBP1 D USBP0 D USBP0 D USBP1 D USBP1 USB_B3 USB_B2 USB_A3 USB_A2 L100 L101 R160 R157 R147 R143 B1 A1 B3 B2 A3 A2 B4 A4 GND1 GND2 GND3 GND4 L507 L512 GND USB_GND J508 ...

Page 111: ...oard 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 following signal or replace the parts one at a time and test after each replacement Parts U22 RP25 CP7 F502 R26 R27 C21 L2 C11 L100 R157 R160 F503 R22 R23 C28 L13 C19 L101 R143 R147 L507 L512 Signals USBP1 USB_B1...

Page 112: ...IGHT CDROM_ LEFT U22 SIS 630 ASDIN0 ABITCLK ARST C78 L19 J509 INTERNAL MIC1 L17 L502 L516 AUDIO IN R111 R60 C62 R44 R43 C68 CDROM_COMM C66 R56 CDROM_GND CDROM CONNECTOR C64 L28 VA 21 20 18 19 11 5 8 10 6 R29 12V U4 ADP3301AR 5 C381 D4 C51 C48 R73 0 J503 L501 R505 LINE_IN L R501 LINE_IN R R506 R502 C59 C58 23 24 LINE IN R47 0 J4 L535 L536 L62 R81 R207 L63 29 R82 3V U31 W83626F 24 576MHZ CODEC XIN 2...

Page 113: ...ROUT LOUT LOUT 22 15 3 10 C7 U6 TPA0202 Amplifier SPK_OFF VR501 Drive IC LED 5 4 2 3 1 8 9 7 VA 5V L32 L16 L26 L18 L31 L27 L20 R42 R41 J510 3V R37 Q7 R45 Q6 3V DEVICE DECT DECT HP OPT Q8 5V L21 R46 6 L12 C16 R36 R31 R10 R20 Q12 5V R117 U18 AMP_DOWN 3V C579 R578 SPDIFOUT SPDIF C55 C67 J514 CHARGE B D 7 10 AUDIO FAILURE AUDIO OUT No sound from speaker after audio driver is installed AMP_SHUTDOWN MUT...

Page 114: ...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 Parts U5 C64 L516 L502 C78 J509 J4 L19 L17 R43 R44 C68 R66 D4 U4 Signals MIC1 Parts U5 C65 C76 C66 J513 Signals CDROM_LEFT CDROM_RIGHT CDROM_GND AUDIO DRIVE FAILURE 1 Check if speaker cables are connected properly ...

Page 115: ... PC97338VJG RS232_OFF ISA_IRQ4 U22 SIS630 COM1RXD COM1DCD COM1DSR COM1RI CA2 CA1 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 INDICATOR PIN 5 SG SIGNAL GROUND PIN DEFINITION OF SIO PORT PIN 1 4 6 SHORT PIN 2 3 SHORT PIN 7 8 9 SHORT LOOPBACK CONNECTOR FOR S...

Page 116: ...ting 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 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 U27 U1 Q1 R39 C6 C8 CA1 CA2 J507 Signals ISA_IRQ4 RS...

Page 117: ... INIT INITIATE OUTPUT PIN 12 14 SHORT PIN 11 BUSY BUSY SIGNAL PIN 17 SLIN PRINTER SELECT LOOPBACK CONNECTOR FOR EPP TEST PIN 12 PE PAPER END PIN 18 25 SIGNAL GROUND PIN 1 2 4 6 8 SHORT PIN 13 SLCT PRINTER SELECTED PIN 3 5 7 9 16 SHORT PIN 18 19 20 21 22 23 24 25 SHORT D STB P_STB PD AFD PD INIT PD SLIN PD ACK PD BUSY PD PE PD SLCT PD ERR D AFD D INIT D SLIN D ACK D BUSY D PE D SLCT D ERR IRQ7 U27 ...

Page 118: ...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 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 J505 U27 L1 C10 RP1 RP5 RP6 D3 R7 FA1 FA4 CA3 CA6 Signals P_S...

Page 119: ...SERR PERR STOP DEVSEL FRAME REQ0 GNT0 CLKRUN PCLKCARD 32K_CARD U17 TPS2206 SLOT A SLOT B VPPAOUT CARD_VCCA VPPBOUT CARD_VCCB 3V 5V 12V POWER SWITCH MATRIX ACD 0 15 ACA 0 25 BCD 0 15 BCA 0 25 AIOWR AIORD AINPACK AREG ARDY AWAIT ABVD1 ABVD2 ARESET AWE AVS1 AVS2 ACE1 ACE2 A_CD 1 A_CD 2 AOE AWP BIOWR BIORD BINPACK BREG BRDY BWAIT BBVD1 BBVD2 BRESET BWE BVS1 BVS2 BCE1 BCE2 B_CD 1 B_CD 2 BOE BWP Pc card...

Page 120: ...signal or replace the parts one at a time and test after each replacement Parts U17 U505 U507 RP13 RP16 RP18 RP509 RP511 D14 D15 C125 R604 R603 U507 L44 L47 L50 R569 R567 C173 C178 C175 C162 C154 C155 C160 Try another known Good PC card device 7 13 PC CARD SOCKET FAIL An error occurs when a PC card device is installed AIOWR AIORD AINPACK AREG ARDY AWAIT ABVD1 ABVD2 ARESET AWE AVS1 AVS2 ACE1 ACE2 A...

Page 121: ...7 6 4 5 2 3 1 PR16 100K NA 0603 1 2 PR1 33 0603 1 2 PR505 100K 0603 1 2 PR7 100K 0603 1 2 JO3 OPEN SMT4 1 2 PR22 1K 0603 1 2 PR3 100K 0603 1 2 G D S PQ504 SI4416DY SO8 8 7 6 4 5 2 3 1 PR506 33 0603 1 2 D S PQ10 SI2302DS SOT23_FET G D S D S PQ4 2N7002 G D S PC507 1U 10V 0805 1 2 PL503 BEAD_120Z 100M 0805C 1 2 PR501 100K 0603 1 2 PC18 0 1U 50V 0603 1 2 PC39 1U 10V 0805 1 2 PC36 1U 10V 0805 1 2 PC518...

Page 122: ...7343 20 1 2 G D S PU10 SI4832DY SO8 8 7 6 4 5 2 3 1 PC38 150U 4V 7343 20 1 2 PD19 BAS32L MLL34B A K G D S PU11 SI4832DY SO8 8 7 6 4 5 2 3 1 PC47 150U 4V 7343 20 1 2 PL8 1UH IHLP 5050CE 15 1 2 PD12 BAS32L_NA MLL34B A K PL5 120Z 100M 2012 1 2 PC106 0 01U 50V 10 0603B 1 2 PC64 10U_NA 25V 1206 1 2 PC27 22U_NA 20V EW6 6 1 2 PD7 EC31QS04 DC2010 A K PC48 150U 4V 7343 20 1 2 PR44 10 0603 1 2 PC57 47P 0603...

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MiTAC 7521 B, Service Manual & Troubleshooting Manual

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