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MiTAC 8381 Service Manual

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SERVICE MANUAL FOR
SERVICE MANUAL FOR
SERVICE MANUAL FOR
Repair Technology Research Department /EDVD
Repair Technology Research Department /EDVD
8381
8381
8381
BY:
Valley.
Hu
Valley.
Hu
Jul.2003

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Summary of Contents for MiTAC 8381

  • Page 1 SERVICE MANUAL FOR SERVICE MANUAL FOR SERVICE MANUAL FOR 8381 8381 8381 Valley. Valley. Repair Technology Research Department /EDVD Repair Technology Research Department /EDVD Jul.2003...

  • Page 2: Table Of Contents

    8381 N/B Maintenance Contents 1. Hardware Engineering Specification ---------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------- 1.1 Introduction ---------------------------------------------------------------------------------------------- 1.2 System Hardware Parts ------------------------------------------------------------------------------------------------------ 1.3 Other Functions ---------------------------------------------------------------------------------------------- 1.4 Peripheral Components -------------------------------------------------------------------------------------------------- 1.5 Power Management ------------------------------------------------------------------------ 1.6 Appendix1: VT 8235 GPIO DEFINITIONS ------------------------------------------------------------------------------------- 1.7 Appendix2: H8 Pins Definitions 2.
  • Page 3 8381 N/B Maintenance Contents 8. Trouble Shooting -------------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------- 8.1 No Power ----------------------------------------------------------------------------------------- 8.2 Battery Can’t Be Charged ---------------------------------------------------------------------------------------------------------- 8.3 No Display ---------------------------------------------------------------------------- 8.4 LCD No Display or Picture Abnormal ---------------------------------------------------------------- 8.5 External Monitor No Display or Color Abnormal ------------------------------------------------------------------------------------------------ 8.6 Memory Test Error...

  • Page 4: Hardware Engineering Specification

    1. Hardware Engineering Specification 1.1 Introduction The 8381 motherboard would support the AMD 35W Mobile Thoroughbred / Barton CPU with OPGA, 462 Socket, which will support different speeds up to 2200+ for Thoroughbred 35W (L2 cache 256K) and to 2500+ for Barton 35W(L2 cache 512K).
  • Page 5 8381 N/B Maintenance mastering IDE, Windows 95-ready Plug & Play, Advanced Power Management (APM) and Advance configuration and power interface (ACPI). Following chapters will have more detail description for each individual sub-systems and functions.

  • Page 6: System Hardware Parts

    8381 N/B Maintenance 1.2 System Hardware Parts Item System A System B AMD 35W Athlon XP CPU AMD 35W Athlon XP CPU Core logic VIA KN266 ( VT8372 +VT8235) VIA KN266 ( VT8372 +VT8235) Memory on Board DDRRAM:Samsung K4H561638D-TCB0 DDR RAM : Samsung K4H561638D-TCB0...
  • Page 7 8381 N/B Maintenance 1.2.1 The AMD Athlon XP processor model 8 The AMD Athlon XP processor model 8 is the latest member of the AMD Athlon family of processors designed to meet the computation-intensive requirements of cutting-edge software applications running on high-performance desktop systems.
  • Page 8 8381 N/B Maintenance The AMD Athlon XP processor model 8 is binary-compatible with existing x86 software and backwards compatible with applications optimized for MMX, SSE, and 3DNow! technology. Using a data format and Single-Instruction Multiple-Data (SIMD) operations based on the MMX instruction model, the AMD Athlon XP processor model 8 can produce as many as four, 32-bit, single-precision floating-point results per clock cycle.
  • Page 9 8381 N/B Maintenance 1.2.2 System frequency System frequency synthesizer ICS950902 pin configuration is suitable for VIA KN266 chipset with PC133 or DDR memory. Output Features: 1 - Pair of differential CPU clocks @ 3.3V (CK408)/ 1 - Pair of differential open drain CPU clocks (K7) 1 - Pair of differential push pull CPU_PP clocks @ 2.5V...
  • Page 10 8381 N/B Maintenance Programmable output skew. Programmable spread percentage for EMI control. Watchdog timer technology to reset system if system malfunctions. Programmable watch dog safe frequency. Support I 2 C Index read/write and block read/write operations. Uses external 14.318MHz crystal.
  • Page 11 8381 N/B Maintenance 1.2.3 Core Logic VIA KN266+ VIA 8235 1.2.3.1 VIA KN266 Chipset Key Specifications: High Performance CPU Interface Socket-A support for AMD_ Athlon Processors. 266 or 200 MHz CPU Front Side Bus (FSB). Built-in Phase Lock Loop circuitry for optimal skew control within and between clocking regions.
  • Page 12 8381 N/B Maintenance Supports Defer / Defer-Reply transactions. Transaction assurance for V-Link Host to Client access (eliminates V-Link Host-Client Retry cycles). Intelligent V-Link transaction protocol to eliminate data wait-state / throttle transfer latency. All V-Link transactions (both Host and Client) have a consistent view of transaction data depth and buffer size to avoid data overflow .
  • Page 13 8381 N/B Maintenance DRAM interface may be faster than CPU by 33 MHz to allow use of 133 MHz memory with 100 MHz FSB. DRAM interface may be slower than CPU by 33 MHz to allow use of 100 MHz memory with 133 MHz FSB .
  • Page 14 8381 N/B Maintenance Seamless DRAM command scheduling for maximum DRAM bus utilization. Four cache lines (16 quadwords) of CPU to DRAM write buffers. Four cache lines of CPU to DRAM read prefetch buffers. Read around write capability for non-stalled CPU read.
  • Page 15 8381 N/B Maintenance Single cycle 128-bit 3D architecture . 8M triangles/second setup engine . 140M pixels/second trilinear fill rate . Microsoft DirectX texture compression . Next generation, 128-bit 2D graphics engine . High quality DVD video playback . Flat panel monitor support .
  • Page 16 8381 N/B Maintenance Massive 2K x 2K textures . MPEG-2 video textures . Vertex and table fog . 16 or 24-bit Z-buffering . Reflection mapping, texture morphing, shadows, procedural textures and atmospheric effects . 2D Hardware Acceleration Features : ROP3 Ternary Raster Operation BitBLTs .
  • Page 17 8381 N/B Maintenance Contrast, hue, saturation, brightness and gamma controls . Digital port for NTSC/PAL TV encoders . Extensive LCD Support : Integrated 2-channel 110 MHz LVDS interface with 4-bit data path per channel . Support for all resolutions up to 1600x1200 .
  • Page 18 8381 N/B Maintenance Clock run and clock generator control for on-chip AGP bus . VTT suspend power plane preserves memory data . Suspend-to-DRAM and self-refresh power down . Low-leakage I/O pads . ACPI1.0B and PCIB us Power Management 1.1 compliant .
  • Page 19 8381 N/B Maintenance Parity checking to insure correct data transfers . Integrated Peripheral Controllers : Integrated Fast Ethernet Controller with 1 / 10 / 100 Mbit capability . Integrated USB 2.0 Controller with three root hubs and six function ports .
  • Page 20 8381 N/B Maintenance Serial IRQ for docking and non-docking applications. Fast reset and Gate A20 operation. Concurrent PCI Bus Controller : 33 MHz operation . Supports up to six PCI masters . Peer concurrency . Concurrent multiple PCI master transactions; i.e., allow PCI masters from both PCI buses active at the same time .
  • Page 21 8381 N/B Maintenance Sixteen levels (double-words) of prefetch buffers from DRAM for access by PCI masters . Delay transaction from PCI master accessing DRAM . Transaction timer for fair arbitration between PCI masters (granularity of two PCI clocks) . Symmetric arbitration between Host/PCI bus for optimized system performance .
  • Page 22 8381 N/B Maintenance UltraDMA-133 / 100 / 66 / 33 Master Mode EIDE Controller : Dual channel master mode hard disk controller supporting four Enhanced IDE devices . Transfer rate up to 133MB/sec to cover PIO mode 4, multi-word DMA mode 2 drives, and UltraDMA-133 interface .
  • Page 23 8381 N/B Maintenance Direct Sound Ready AC97 Digital Audio Controller : AC-Link access to 4 CODECs (AC97 + AMC97 + MC97) . Multichannel Audio . Bus Master Scatter / Gather DMA . Dedicated read and write channels supporting simultaneous stereo playback and record .
  • Page 24 8381 N/B Maintenance System Management Bus Interface : Host interface for processor communications . Slave interface for external SMBus masters . Universal Serial Bus Controller : USB v2.0 and Enhanced Host Controller Interface (EHCI) v1.0 compatible . USB v1.1 and Universal Host Controller Interface (UHCI) v1.1 compatible .
  • Page 25 8381 N/B Maintenance PCI bus clock run, Power Management Enable (PME) control, and PCI/CPU clock generator stop control . Supports multiple system suspend types: power-on suspends with flexible CPU/PCI bus reset options,suspend to DRAM, and suspend to disk (soft-off), all with hardware automatic wake-up .
  • Page 26 8381 N/B Maintenance Plug and Play Controller : PCI interrupts steerable to any interrupt channel . Steerable interrupts for integrated peripheral controllers: USB, floppy, serial, parallel, and audio . Microsoft Windows XPTM, Windows NTTM, Windows 2000TM, Windows 98TM and plug and play BIOS compliant .
  • Page 27 8381 N/B Maintenance Data transfer controller (DTC) . 8-bit PWM timer (PWM) . 14-bit PWM timer (PWMX) . 16-bit free-running timer (FRT) . 8-bit timer (TMR) . Timer connection . Watchdog timer (WDT) . Asynchronous or clocked synchronous serial communication interface (SCI) .
  • Page 28 8381 N/B Maintenance 1.2.5 System Flash Memory (BIOS) 2 M (4M) bit Flash memory . Flashed by 3.3V only . User can upgrade the system BIOS in the future just running flash program . 1.2.6 128MB, 256MB, 512MB (x64) 200-Pin DDR SDRAM SODIMMs JEDEC-standard 200-pin, small-outline, dual in-line memory module (SODIMM) .
  • Page 29 8381 N/B Maintenance Internal, pipelined double data rate (DDR) architecture; two data accesses per clock cycle . Bi-directional data strobe (DQS) transmitted/received with data- i.e., source-synchronous data capture . Differential clock inputs (CK and CK# - can be multiple clocks, CK0/CK0#, CK1/CK1#, etc.) .
  • Page 30 8381 N/B Maintenance 1.2.7 VIA VT6103 Fast Ethernet 10/100 1-Port PHY / Transceiver FEATURES : Single Chip 100Base-TX / 10Base-T Physical Layer Solution . Dual Speed - 100 / 10 Mbps . Half and Full Duplex . MII Interface to Ethernet Controller .
  • Page 31 8381 N/B Maintenance Duplex status Speed Status . Collision . 48 Pin SSOP Package . 1.2.8 PC Card Interface Controller: PCI 1510 The Texas Instruments PCI1510, a 144-terminal single-slot CardBus controller designed to meet the PCI Bus Power Management Interface Specification for PCI to CardBus Bridges, is an ultra low-power high-performance PCI-to- CardBus controller that supports a single PC card socket compliant with the PC Card Standard (rev.
  • Page 32 8381 N/B Maintenance Multiple system-interrupt signaling options are provided, including parallel PCI,parallel ISA, serialized ISA, and serialized PCI. Furthermore, general-purpose inputs and outputs are provided for the board designer to implement sideband functions. Many other features designed into the PCI1510, such as a socket activity light-emitting diode (LED) outputs, are discussed in detail throughout this document.
  • Page 33 8381 N/B Maintenance Pipelined architecture for greater than 130-Mbps throughput from CardBus-to-PCI and from PCI-to-CardBus . Up to five general-purpose I/Os . Programmable output select for CLKRUN . Five PCI memory windows and two I/O windows available for the 16-bit interface .
  • Page 34 8381 N/B Maintenance 1.2.9 AC'97 AUDIO SYSTEM: CMI 9738S VT8235 is an AC'97 2.1 compliant controller that communicates with companion Codecs through a digital serial link called the AC-link. The CMI9738S is an AC97 2.2 compatible stereo audio codec designed for PC multimedia systems.The CMI9738S prives the way for PC98 and PC99-compliant desktop, portable, and entertainment PCs, where high-quality audio is required.
  • Page 35 8381 N/B Maintenance 18-20bit DAC interface for SPDIF I/O(ICH4) . 1.2.10 MDC: Billionton MDC56S-E Modem Features : MDC (Mobile Daughter Card) 56Kbps modem card. Software modem & Fax. Line-in/rear out share the same jack. Supports V.92 and K56Flex modem function.
  • Page 36 8381 N/B Maintenance V.32 bis (4.8 Kbps to 14.4 Kbps). V.22 bis (50 bps to 2.4 Kbps). V21, Bell 103 / Bell 212. V.42 bis/MNP 5 data compression. V.42/MNP 2-4 error correction. Virtual Com port with a throughput of up to 460.8 Kbps.
  • Page 37 8381 N/B Maintenance 1.2.11 Audio Power Amplifier :TPA0212 Features : Compatible With PC 99 Desktop Line-Out Into 10-k ohm Load . Internal Gain Control, Which Eliminates . External Gain-Setting Resistors . 2-W/Ch Output Power Into 3-W Load . Input MUX Select Terminal .
  • Page 38 8381 N/B Maintenance Applications General Description : The TPA0212 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2 W of continuous RMS power per channel into 3-W loads. This device minimizes the number of external components needed, simplifying the design, and freeing up board space for other features.
  • Page 39 8381 N/B Maintenance 1.2.12 Single-Slot PC Card Power Interface Switch: TPS2211 TPS2211 is a single slot PCMCIA and CardBus power switch. It integrates control logic, low switching resistance MOSFET, over current alarm and over temperature auto shutdown circuits. It can deliver 3.3V or 5V to PC Card xVCCOUT and 3.3V, 5V or 12V to PC Card xVPPOUT.

  • Page 40: Other Functions

    8381 N/B Maintenance 1.3 OTHER FUNCTIONS 1.3.1 Hot Key Function (not confirmed with Sharp) Keys Combination Feature Meaning Fn + F1 Fn + F2 Fn + F3 Volume down Audio Volume down Fn + F4 Volume up Audio Volume up...

  • Page 41: Cover Switch

    8381 N/B Maintenance 1.3.2 Power on/off/suspend/resume button APM mode : At APM mode, Power button is on/off system power. ACPI mode : At ACPI mode. Windows power management control panel set power button behavior. You could set "standby", "power off" or "hibernate"(must enable hibernate function in power Management) to power button function.

  • Page 42: Led Indicators

    8381 N/B Maintenance 3. Off 4. Hibernate (must enable hibernate function in power management) 1.3.4 LED Indicators System has eight status LED indicators to display system activity, which include three at the lower side of Panel cover and five in the front-left edge of the notebook .

  • Page 43: Battery Status

    8381 N/B Maintenance 1.3.5 Battery status Battery Warning : System also provides Battery capacity monitoring and gives user a warning so that users have chance to save his data before battery dead. Also, this function protects system from mal-function while battery capacity is low.Battery Warning: Capacity below 10%, Battery Capacity LED flashes per second, system beeps per 2 seconds.

  • Page 44: Cmos Battery

    8381 N/B Maintenance 1.3.6 Fan power on/off management FAN is controlled by H8 embedded controller-using AD1032 to sense CPU temperature and H8/2140 PWM control fan speed. Fan speed is depended on CPU temperature. Higher CPU temperature faster Fan Speed. 1.3.7 CMOS Battery CR2032 3V 220mAh lithium battery When AC in or system main battery inside, CMOS battery will consume no power.AC or main battery not exists,...
  • Page 45 8381 N/B Maintenance One Card Bus Sockets for one type II PC card extension. One USB HDD connector. Low Supply Current and Shutdown Current . Surface-Mount Power Packaging . 24-Pin TSSOP PowerPADE . 1.3.9 Battery current limit and learning Implanted H/W current limit and battery learning circuit to enhance the protection of battery.
  • Page 46 8381 N/B Maintenance TheμPD720130 features: Compliant with Universal Serial Bus Specification Revision 2.0 (Data Rate 12/480 Mbps) . Compliant with ATA/ATAPI-6 (LBA48, PIO Mode 0-4, Multi Word DMA Mode 0-2, Ultra DMA Mode 0-4) . USB2.0 high-speed bus powered device capability .

  • Page 47: Peripheral Components

    8381 N/B Maintenance 1.4 PERIPHERAL COMPONENTS 1.4.1 LCD PANEL 14" TFT XGA : QDI:QD141X1LH03-MP01 . CHI-mei : N141X6-L01 . AU :B141XN04-2(UB141X03) . 14" TFT XGA : Hannstar HSD121PX11 . Hyundai HT12X1215" TFT . Sanyo TM121XG-02L10 . 1.4.2 Ext.Floppy Disk Drive...
  • Page 48 8381 N/B Maintenance 1.4.3 HDD FUJITSUI : 40GB MHR2040AT HITACHI : 30GB DK23EA-30 , 40GB DK23DA-40 , 60GB DK23DA-60 Toshiba : 60GB MK6021 . 1.4.4 DVD-ROM QSI:SDR-083(8X) 1.4.5 Combo Driver Quanta: DW242 Matsushita: UJDA 740SH1-A Matsushita: UJDA810 . 1.4.6 CD-RW...

  • Page 49: Track Pad Synaptic

    8381 N/B Maintenance 1.4.7 Keyboard 1.4.8 Track Pad Synaptic Accurate positioning . Low fatigue pointing action . Low profile . No moving part, high reliability . Low power consumption . Environmentally sealed . Compact size . Software configurable . Low weight .
  • Page 50 8381 N/B Maintenance Operating humidity: 5%-95% relative humidity, non condensing . Storage temperature: -40 to +65 degree C . ESD: 15KV applied to front surface SEE ESD Testing specification PN520-000270-01 . Power supply voltage: 5.0Voltage ±10% . Power supply current: 4.0mA max operating .
  • Page 51 8381 N/B Maintenance 1.4.11 Wireless LAN(optional) MiTAC Askey WLL030 Ambit 1.4.12 Modem MDC Billionton MDC56S-1 AC97 Link: MDC (Mobile Daughter Card)Askey: V1456VQL-P1(INT)

  • Page 52: Power Management

    8381 N/B Maintenance 1.5 POWER MANAGEMENT The 8381system has built in several power saving modes to prolong the battery usage. User can enable and configure different degrees of power management modes via ROM CMOS setup (booting by pressing F2 key).
  • Page 53 8381 N/B Maintenance --LCD: backlight off --HDD: spin down Suspend to DRAM : The most chipset of the system is entering power down mode for more power saving. In this mode, the following is the status of each device: CPU: off...

  • Page 54: Other Power Management Functions

    8381 N/B Maintenance 1.5.2 Other power management functions HDD & Video access : System has the ability to monitor video and hard disk activity. User can enable monitoring function for video and/or hard disk individually. When there is no video and/or hard disk activity, system will enter next PMU state depending on the application.

  • Page 55: Appendix1: Vt 8235 Gpio Definitions

    8381 N/B Maintenance 1.6 APPENDIX 1: VT 8235 GPIO DEFINITIONS The definition of VIA VT8235 GPIO : GPIO Multi-Function Default Selection Power Comment function plant GPI0 GPI0 GPI0 4.7Kà +3V GPI1 GPI1 GPI1 VSUS33 4.7Kà +3V GPI2 EXTSMI# EXTSMI# VSUS33...
  • Page 56 8381 N/B Maintenance The definition of VIA VT8235 GPIO : GPIO Multi-Function Default Selection Power Comment function plant GPI16 INTRUDER# GPI16 GPI17 CPUMISS CPUMISS# MAIN GPI18 THRM# / AOLGPI THRM# MAIN GPI19 IORDY IOCHRDY MAIN GPI/O20 ACSDIN2/PCS0# GPI20 MAIN 10K-> GND...
  • Page 57 8381 N/B Maintenance The definition of VIA VT8235 GPIO : GPIO Multi-Function Default Selection Power Comment function plant GPO0 GPO0 VSUS33 4.7K-> +3V GPO1 SUSA# SUSA# VSUS33 GPO2 SUSB# SUSB# VSUS33 GPO3 SUSST1# SB_SUSST# VSUS33 GPO4 SUSCLK SUSCLK# VSUS33 GPO5...

  • Page 58: Appendix2: H8 Pins Definitions

    8381 N/B Maintenance 1.7 Appendix 2: H8 Pins Definitions Flash Memory Normal Sleep Software Standby Port/Pin disable enable PROM Mode Mitac definition function During Reset Operation Mode Mode Number P1-0 P1-0 Tri-state Prev. Prev. P1-1 P1-1 Tri-state Prev. Prev. P1-2...
  • Page 59 8381 N/B Maintenance Flash Memory Normal Sleep Software Standby Port/Pin disable enable PROM Mode Mitac definition function During Reset Operation Mode Mode Number LPC_FRAME# P3-4 P3-4 HDB4 Tri-state Prev. Prev. PCIRST# P3-5 P3-5 HDB5 Tri-state Prev. Prev. H8_CLK P3-6 P3-6...
  • Page 60 8381 N/B Maintenance Flash Memory Normal Sleep Software Standby Port/Pin disable enable PROM Mode Mitac definition function During Reset Operation Mode Mode Number P6-5 Tri-state Prev. Prev. P6-6 Tri-state Prev. Prev. P6-7 Tri-state Prev. Prev. P7-0 BATT_T Tri-state Tri-state Tri-state...
  • Page 61 8381 N/B Maintenance Flash Memory Normal Sleep Software Standby Port/Pin disable enable PROM Mode Mitac definition function During Reset Operation Mode Mode Number P9-3 H8_SB_PWRBTN Tri-state Prev. Prev. P9-4 FA15 H8_RCIN# Tri-state Prev. Prev. P9-5 FA16 H8_RSMRST# Tri-state Prev. Prev.
  • Page 62 8381 N/B Maintenance Flash Memory Normal Sleep Software Standby Port/Pin disable enable PROM Mode Mitac definition function During Reset Operation Mode Mode Number PB-5 CHARGING Tri-state Prev. Prev. PB-6 USB_HDD_POWER Tri-state Prev. Prev. PB-7 USB_IC_POWER# Tri-state Prev. Prev. NMI# H8_POWERBTN#...

  • Page 63: System View & Disassembly

    8381 N/B Maintenance 2. System View and Disassembly 2.1 System View 2.1.1 Front View Œ • Device LED indicator Œ • Line Out Phone Jack Ž External Microphone Jack • Top Cover Latch • Ž 2.1.2 Left-side View Œ VGA Port •...
  • Page 64 8381 N/B Maintenance 2.1.3 Right-side View Œ CD-ROM/DVD-ROM Drive • USB Ports *2 Ž Power Connector Œ • Ž 2.1.4 Rear View Œ USB Ports *2 • Kensington Lock Œ •...
  • Page 65 8381 N/B Maintenance 2.1.5 Bottom View Ž Œ Hard Disk Drive • Modem Card • Ž Battery Park • • Œ • Wireless Card • 2.1.6 Top-open View Œ LCD Screen • Stereo Speaker Set • Œ Ž Power Button •...

  • Page 66: System Disassembly

    8381 N/B Maintenance 2.2 System Disassembly The section discusses at length each major component for disassembly/reassembly and show corresponding illustrations. Use the chart below to determine the disassembly sequence for removing 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.

  • Page 67: Battery Pack

    8381 N/B Maintenance 2.2.1 Battery Pack Disassembly 1. Carefully put the notebook upside down. 2. Slide the left release lever to the “unlock” ( ) position (Œ), then sliding and holding the right release lever outwards while take the battery pack out of the compartment (•). (Figure 2-1) •...
  • Page 68 8381 N/B Maintenance 2.2.2 Keyboard Disassembly 1. Remove the battery pack. (Refer to section 2.2.1 Disassembly) 2. Remove one screw and open the top cover.(Figure 2-2) 3. Remove the keyboard cover.(Figure 2-3) Figure 2-2 Remove one screw Figure 2-3 Remove the keyboard cover...
  • Page 69 8381 N/B Maintenance 4. Remove three screws that secure the keyboard cover and Slightly lift up the keyboard. (Figure 2-4) 5. Disconnect the cable from the system board to detach the keyboard. (Figure 2-5) Figure 2-4 Remove three screws Figure 2-5 Disconnect the cable Reassembly 1.
  • Page 70 8381 N/B Maintenance 2.2.3 CPU Disassembly 1. Remove the battery pack. (Refer to section 2.2.1 Disassembly) 2. Remove four screws fastening the heatsink cover. (Figure 2-6) 3. Remove four spring screws that secure the heatsink upon the CPU. (Figure 2-7)
  • Page 71 8381 N/B Maintenance 4. Disconnect the fan’s power cord from system board. (Figure 2-8) 5. Then insert a minus screwdriver 101 (JIS standard) into the “OPEN” hole of the socket, and push the screwdriver toward the CPU to free the CPU. Now you can take out the CPU from the socket. (Figure 2-9)

  • Page 72: Hdd Module

    8381 N/B Maintenance 2.2.4 HDD Module Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (Refer to section 2.2.1 Disassembly) 2. Remove two screws fastening the HDD compartment cover. (Figure 2-10) 3. Slide the HDD module out of the compartment. (Figure 2-11)
  • Page 73 8381 N/B Maintenance 4. Remove four screws to To separate the hard disk drive from the bracket, remove four screws. (Figure 2-12) Figure 2-12 Remove hard disk drive Reassembly 1. Attach the bracket to hard disk drive and secure with four screws.
  • Page 74 8381 N/B Maintenance 2.2.5 CD/DVD-ROM Drive Disassembly Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (Refer to section 2.2.1 Disassembly) 2. Remove two screws fastening the CD/DVD-ROM drive. (Figure 2-13) 3. Insert a small rod, such as a straightened paper clip, into CD/DVD-ROM drive’s manual eject hole (Œ) and push firmly to release the tray.

  • Page 75: Modem Card

    8381 N/B Maintenance 2.2.6 Modem Card Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (Refer to section 2.2.1 Disassembly) 2. Remove two screws fastening the modem card. (Figure 2-15) 3. Lift up the modem card and disconnect the cord. (Figure 2-16)

  • Page 76: Lcd Assy

    8381 N/B Maintenance 2.2.7 LCD ASSY Disassembly 1. Remove the battery pack, keyboard, hard disk drive . (See sections 2.2.1,2.2.2 , 2.2.4 Disassembly) 2. Remove the twenty two screws fastening the housing. (Figure 2-17) 3. Remove the two screws fastening the Mini PCI compartment cover (Figure 2-18)
  • Page 77 8381 N/B Maintenance 4. Detach the antennae. (Figure 2-19) 5. Remove the two screws that secure the hinge cover (Figure 2-20) Figure 2-19 Disconnect the antennae Figure 2-20 Remove two screws...
  • Page 78 8381 N/B Maintenance 6. Remove the two rear covers. (Figure 2-21) 7. Remove three screws. And disconnect the touch pad’s cable. Then separate the top cover. (Figure 2-22) Figure 2-21 Remove two rear covers Figure 2-22 Remove the top cover...
  • Page 79 8381 N/B Maintenance 8. Remove the two hinge covers and disconnect two cables. (Figure 2-23) 9. Remove four screws. (Figure 2-24) Figure 2-23 Remove two hinge covers Figure 2-24 Remove four screws...
  • Page 80 8381 N/B Maintenance 10. Remove four screws fastening the system board into housing. Then lift up the system board. Peel off the antenna cord. Then detach the LCD ASSY. (Figure 2-25) Figure 2-25 Remove four screws Reassembly 1. Attach the LCD assembly to the base unit and secure with four screws.

  • Page 81: Inverter Board

    8381 N/B Maintenance 2.2.8 Inverter Board Disassembly 1. Remove the battery, keyboard, hard disk drive, CD/DVD-ROM drive and LCD assembly. (Refer to section 2.2.1 2.2.2, 2.2.4, 2.2.5 and 2.2.7 Disassembly) 2. Remove the two rubber pads and two screws on the corners of the panel. (Figure 2-26) 3.
  • Page 82 8381 N/B Maintenance 5. To remove the inverter board on the lower part of the LCD housing , disconnect two cables. (Figure 2-28) Figure 2-28 Remove the inverter board Reassembly 1. Reconnect the cables. Fit the inverter board back into place and secure with two screw.

  • Page 83: Lcd Panel

    8381 N/B Maintenance 2.2.9 LCD Panel Disassembly 1. Remove the battery, keyboard, hard disk drive ,CD/DVD-ROM drive and LCD assembly. (Refer to sections 2.2.1, 2.2.2, 2.2.4, 2.2.5 and 2.2.7 Disassembly) 2. Remove the LCD cover. (Refer for two steps 2,3 of section 2.2.8 Disassembly) 3.
  • Page 84 8381 N/B Maintenance 5. Remove the four screws to free the LCD panel. (Figure 2-31) Figure 2-31 Free the LCD panel Reassembly 1. Attach the LCD panel’s bracket back to LCD panel and secure with four screws. 2. Replace the LCD panel into place.

  • Page 85: System Board

    8381 N/B Maintenance 2.2.10 System Board Disassembly 1. Remove the battery, keyboard, hard disk drive, CPU, CD/DVD-ROM drive and modem card. (Refer to sections 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6 Disassembly) 2. Remove the top cover approach the system board. (Refer to steps 1-7 of section 2.2.7 Disassembly) 3.
  • Page 86 8381 N/B Maintenance 4. Remove two hex nuts and disconnect two speaker’s cords from system board. Then separate the bracket.(Figure 2-33) 5. Carefully put the system board upside down. And remove one screw. (Figure 2-34) Figure 2-33 Remove two hex nuts...
  • Page 87 8381 N/B Maintenance 6. Separate the D/D board from system board. ((See the bracket (Figure2-33) Disassembly) Figure 2-35)) Figure 2-35 Free the system board Reassembly 1. Replace the D/D board to the system board and secure with one screw. 2. Fit the bracket and secure with two hex nuts.

  • Page 88: Touch Pad

    8381 N/B Maintenance 2.2.11 Touch Pad Disassembly 1. Remove the battery pack, keyboard, hard disk drive. (See sections 2.2.1,2.2.2 and 2.2.4 Disassembly) 2. Remove the top cover. (See steps 1-7 in section 2.2.7 Disassembly) 3. Disconnect the cable. (Figure 2-36) 4.

  • Page 89: Definition & Location Of Connectors / Switches Setting

    8381 N/B Maintenance 3. Definition & Location of Connectors / Switches 3.1 Mother Board-A J1 : Left Internal Speaker Connector J2 : LCD Inverter Board Connector J3 : LCD Connector J4 : D/D Board Connector J5 : Touch Pad Connector...
  • Page 90 8381 N/B Maintenance 3. Definition & Location of Connectors / Switches 3.2 Mother Board-B J502 : VGA Connector J503 : CPU FAN Connector J505 J504 : Extended Memory Connector J510 J505 : CDROM Connector J504 J507 : MDC Jump wire Connector J508 : RJ45 &...
  • Page 91 8381 N/B Maintenance 3. Definition & Location of Connectors / Switches 3.3 Charge Board Side A J1 ,J8 : USB Connector J10 : Battery Connector J11 : D/D Board to M/B Connector PJ1 : Power Jack...

  • Page 92: Definition & Location Of Major Component

    8381 N/B Maintenance 4. Definition & Location of Major Components 4.1 Mother Board-A U10 : On Board DDR RAM U11 : On Board DDR RAM U12 : On Board DDR RAM U13 : On Board DDR RAM U14 : VT8235 (South Bridge) U18 : TPA0212 (Audio Amplifier) U19 : ALC201 (AC’97 CODEC)
  • Page 93 8381 N/B Maintenance 4. Definition & Location of Major Components 4.2 Mother Board-B U502 : VT8372(North Bridge) U504 : CPU Socket (Mobile Athlon XP) U505 : On Board DDR RAM U506 : On Board DDR RAM U507 : On Board DDR RAM...
  • Page 94 8381 N/B Maintenance 4. Definition & Location of Major Components 4.3 Charge Board Side B PU503 PU503 :TL594C Pulse-Width-Modulation Controller...

  • Page 95: Pin Description Of Major Component

    8381 N/B Maintenance 5. Pin Descriptions of Major Components 5.1 Mobile AMD Athlon XP Processor Model 8 Detailed Pin Descriptions Detailed Pin Descriptions Cotinue Name Description Name Description A20M# is an input from the system used to simulate address wrap-around in the...
  • Page 96 8381 N/B Maintenance 5.1 Mobile AMD Athlon XP Processor Model 8 Detailed Pin Descriptions Cotinue Detailed Pin Descriptions Cotinue Name Description Name Description FID[3:0] Pins FID[3] (Y3), FID[2] (Y1), FID[1] (W3), and FID[0] (W1) are the 4-bit processor PLL Bypass and PLLTEST#, PLLBYPASS#, PLLMON1, PLLMON2, PLLBYPASSCLK, and clock-to-SYSCLK ratio.
  • Page 97 8381 N/B Maintenance 5.1 Mobile AMD Athlon XP Processor Model 8 Detailed Pin Descriptions Cotinue Name Description VID[4:0] Pins The VID[4:0] (Voltage Identification) outputs are used to dictate the VCC_CORE voltage level. The VID[4:0] pins are strapped to ground or left unconnected on the processor package.

  • Page 98: Via Vt8372 North Bridge With S3 Prosavage8 Agp8X

    8381 N/B Maintenance 5.2 VIA VT8372 North Bridge with S3 ProSavage8 AGP8X CPU Interface Signal Name Pin # Signal Description CFWDRST CLK Forward Reset.Reset the clock forward circuitry for the Athlon .interface. CONNECT Connect.Used for power anagement and CLK-forward initialization at reset.
  • Page 99 8381 N/B Maintenance 5.2 VIA VT8372 North Bridge with S3 ProSavage8 AGP8X DRAM Interface Clocks, Resets, Power Control, General Purpose I/O, Interrupts and Test Signal Name Pin # Signal Description Signal Name Pin # Signal Description MD[63:0] (see pinout tables) Memory Data.These signals are connected to the DRAM...
  • Page 100 8381 N/B Maintenance 5.2 VIA VT8372 North Bridge with S3 ProSavage8 AGP8X CRT Interface Clocks, Resets, Power Control, General Purpose I/O, Interrupts and Test Continue Signal Name Pin # Signal Description Analog Red.Analog red output to the CRT onitor. Signal Name...
  • Page 101 8381 N/B Maintenance 5.2 VIA VT8372 North Bridge with S3 ProSavage8 AGP8X Power,Ground,and Test Power,Ground,and Test Continue Signal Name Pin # Signal Description Signal Name Pin # Signal Description J13-J18,K18,L18, Power for CPU I/O Interface Logic. Voltage is CPU GNDHCK Ground for Host CPU Clock Circuitry.
  • Page 102 8381 N/B Maintenance 5.2 VIA VT8372 North Bridge with S3 ProSavage8 AGP8X SMB /I2C Interface Signal Name Pin # Signal Description SPCLK[2:1] C6,F7 Serial Port (SMB/I2C)Clocks.These are the clocks for serial data transfer. SPCLK1 is typically used for I 2 C com unications.As an output,it is program ed via...

  • Page 103: Via Vt8235 Pci-Lpc South Bridge

    8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge V-Link Interface Advanced Programmable Interrupt Controller (APIC)Interface Signal Name Pin # Signal Description Signal Name Pin # Signal Description VAD[15:0] K22,J22,G24,H22, Address /Data Bus. Bits 0-7 are implemented and bits APICD1 Internal APIC Data 1.Function 0 Rx58[6]=1...
  • Page 104 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge CPU Speed Control Interface CPU Interface Signal Name Pin # Signal Description Signal Name Pin # Signal Description VGATE Voltage Gate. Signal from he CPU voltage regulator. High indicates A20M# A20 Mask.
  • Page 105 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge PCI Bus Interface PCI Bus Interface Continue Signal Name Pin # Signal Description Signal Name Pin # Signal Description AD[31:0] see pin Address /Data Bus. Multiplexed address and data. The address is REQ5#/GPI7, PCI Request.
  • Page 106 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge Universal Serial Bus 2.0 Interface LAN Controller -Media Independent Interface (MII) Signal Name Pin # I/O PU Signal Description Signal Name Pin # Signal Description MCOL PD MII Collision Detect. From he external PHY.
  • Page 107 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge UltraDMA-133 /100 /66 /33 Enhanced IDE Interface UltraDMA-133 /100 /66 /33 Enhanced IDE Interface Continue Signal Name Pin # Signal Description Signal Name Pin # Signal Description PDRDY / EIDE Mode: Primary I/O Channel Ready.Device read indicator...
  • Page 108 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge General Purpose Inputs General Purpose Inputs Continue Signal Name Pin # Signal Description Signal Name Pin # Signal Description GPI0 (VBAT) General Purpose Input 0.Status on PMIO Rx20[0] GPI27 /GPO27 /SMBCK2 General Purpose Input 27.Rx95[2]=1,95[3]=0...
  • Page 109 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge Power Management and Event Detection Power Management and Event Detection Continue Signal Name Pin # Signal Description Signal Name Pin # Signal Description PWRBTN# Power Button.Used by the Power Management CPUSTP#/GPO5 CPU Clock Stop (RxE4[0]=0).Signals the system...
  • Page 110 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge Internal Keyboard Controller Power and Ground Signal Name Pin # Signal Description Signal Name Pin # Signal Description MSCK /IRQ1 IO/I PU MultiFunction Pin (Internal mouse controller enabled by I/O Power.3.3V ±5%...
  • Page 111 8381 N/B Maintenance 5.3 VIA VT8235 BGA PCI-LPC South Bridge Power and Ground Continue System Management Bus (SMB)Interface (I 2 CBus) Signal Name Pin # Signal Description Signal Name Pin # Signal Description USB 2.0 PLL Analog Voltage.2.5V ±5%.Connect to VCC...

  • Page 112: System Block Diagram

    8381 N/B Maintenance 6. System Block Diagram U504 AMD Athlon XP On Board DDR SDRAM Cells modle8 U518 U502 PC Card PC Card North Bridge J504 Interface Socket With Controller LVDS ProSavage8 AGP8X DDR SDRAM Slot*1 V-Link 4X Mini PCI...

  • Page 113: Maintenance Diagnostics

    8381 N/B Maintenance 7. Maintenance Diagnostics 7.1 Introduction Each time the computer is turned on, the system BIOS runs a series of internal checks on the hardware. This power- on self test (post) allows the computer to detect problems as early as the power-on stage. Error messages of post can alert you to the problems of your computer.If an error is detected during these tests, you will see an error message...
  • Page 114 8381 N/B Maintenance 7. Maintenance Diagnostics 7.1.1 Diagnostic Tool for Mini PCI Slot : The Mini PCI DOGkiller card is a single-step debug tool which utilizes Mini PCI interface (Type III A) and is able to hold a PCI bus cycle so that address, data and control bus states on PCI bus can be inspected. Especially, the tool can help an engineer trace address/data bus for BIOS read cycles as soon as power on and debug open or short circuit problems easily.

  • Page 115: Error Codes

    8381 N/B Maintenance 7.2 Error Codes - 1 Following is a list of error codes in sequent display on the debug board. POST (HEX) DESCRIPTION POST (HEX) DESCRIPTION Some Type Of Long Reset RAM Quick Sizing Turn off FASTA20 for POST...
  • Page 116 8381 N/B Maintenance 7.2 Error Codes - 2 Following is a list of error codes in sequent display on the debug board. POST (HEX) DESCRIPTION Update NUMLOCK status special init of COMM and LPT ports Configure the COMM and LPT ports...

  • Page 117: Trouble Shooting

    8381 N/B Maintenance 8. Trouble Shooting 8.1 No Power 8.8 Hard Disk Drive Test Error 8.2 Battery Can not Be Charged 8.9 CD-ROM Drive Test Error 8.3 No Display 8.10 USB Port Test Error 8.4 LCD No Display or Picture Abnormal 8.11 PC Card Socket Test Error...
  • Page 118 8381 N/B Maintenance 8.1 No Power When the power button is pressed, nothing happens ,power indicator does not light up. Battery Main Voltage Map PD504,PL502,PQ508, PL506,PU1502A,PU502B PU9,PU4,PU1,PU2,PU3,PU12 PF502,PL504 PU5,PU6,PU7,PU8,PU10 (Charge) PL503,PQ505 +CPU_CORE (Discharge) J11 J4 PF1,PL1,PL2, PR501 PD501,PD502 PQ6,PQ8,PL504,PR511 JO6,JO7,JO8...
  • Page 119 8381 N/B Maintenance 8.1 No Power When the power button is pressed, nothing happens ,power indicator does not light up. D/VMAIN PWR_VDDIN PD503 BAV70LT1 BAV70LT1 PD502 ADINP EC31QS04 PQ505 PR531 AO4407 100k PD501 EC31QS04 MOTHER BOARD PR532 ADEN# PQ510 PR543...
  • Page 120 8381 N/B Maintenance 8.1 No Power When the power button is pressed, nothing happens ,power indicator does not light up. VDD5 VDD3 H8_AVREF1 L546 R166 SB_POWERBTN# 120Z/100M 9,59 36,37 12V/50MA H8_SB_POWERBTN H8_POWERBTN# PWRSW# R749 DTC144TWK RSMRST# R139 1000P U516 H8_RSMRST#...
  • Page 121 8381 N/B Maintenance 8.1 No Power When the power button is pressed, nothing happens ,power indicator does not light up. No power Check following parts and signals: Connect Is the PARTS: SIGNAL: AC adaptor Notebook connected Charge BD or battery...

  • Page 122: Battery Can Not Be Charged

    8381 N/B Maintenance 8.2 Battery Can not Be Charged Symptom: When the battery is installed but the battery status indicate LED display abnormal. PQ508 PU502A PU502B AO4407 SI4925DY SI4925DY PD504 PL502 BATT PL506 PC519 EC31QS04 PR510 PR511 PF503 PD510 PR520...

  • Page 123: Battery Can Not Be Charged

    8381 N/B Maintenance 8.2 Battery Can not Be Charged Symptom: When the battery is installed but the battery status indicate LED display abnormal. Battery can not Charge Board- Board level level Is the Troubleshooting Troubleshooting Notebook connected Connect to power (AC adaptor)? AC adaptor.
  • Page 124 8381 N/B Maintenance 8.3 No Display (System Failure) ******System Clock Check****** +CPU_CORE R537 R535 R591 U504 C552 R579,577 60.4 60.4 680P CLK_DDR5,CLK_DDR5# HCLK_CPU 43,44 45,46 U505 R536 C553 R589 U506 HCLK_CPU# 680P R572,R574 OPGA4642 45,46 CLK_DDR4,CLK_DDR4# 41,42 U507 U508 NB_DCLK0...
  • Page 125 8381 N/B Maintenance 8.3 No Display (System Failure) ******Reset Circuit Checking****** +CPU_CORE PR13 PWRGD PCI_RESET# From P25 PU7 U504 SB_PWRGOOD U506 VDD3 H8_RESET# PWRGDCPU C125 DTC144TKA R756 U523 R691 100K CPURST# THERM_ERR# C607 0.01U +3VS +3VS DTC144TKA H8_RSMRST# R749 U503...
  • Page 126 8381 N/B Maintenance 8.3 No Display (System Failure) No Display Board-level Troubleshooting Monitor Replace or LCD module monitor or LCD. One of the following parts on the mother-board may be Make sure that CPU module, defective, use an oscilloscope to check the following signal or DIMM memory are installed replace the parts one at a time and test after each replacement.

  • Page 127: Vga Controller Failure Lcd No Display

    8381 N/B Maintenance 8.4 VGA Controller Failure LCD No Display Symptom: There is no display on LCD although power-on-self-test is passed. 100k 100k 100k LCD_ID0 TVD4 LCD_ID1 TVD5 LCD_ID2 TVD6 TXOUT10- TXOUT10- TXOUT10+ TXOUT10+ TXOUT11- TXOUT11- TXOUT11+ TXOUT11+ TXOUT12- TXOUT12-...
  • Page 128 8381 N/B Maintenance 8.4 VGA Controller Failure LCD No Display Symptom: There is no display on LCD although power-on-self-test is passed. VGA Controller Failure 1. Confirm LCD panel or is good and check the cable are connected Board-level properly. Troubleshooting 2.
  • Page 129 8381 N/B Maintenance 8.5 External Monitor No Display Symptom: The CRT monitor shows nothing or abnormal color, but it is OK for LCD. R19 4.7K J502 +5VS +5VS R20 4.7K Q509 CRT_DDCK CON_DDCK 2N7002 Q508 CON_DDDA CRT_DDDA 2N7002 CON_VSYNC +5VS...
  • Page 130 8381 N/B Maintenance 8.5 External Monitor No Display Symptom: The CRT monitor shows nothing or abnormal color, but it is OK for LCD. VGA Controller Failure 1. Confirm monitor is good and check the cable are connected properly. Board-level 2. Try another known good monitor.
  • Page 131 8381 N/B Maintenance 8.6 Memory Test Error Symptom: Either on board or extend DDR RAM is failure or system hangs up. +DDRVREF U502 DDR_CAS# DDR_RAS# DDR_CKE[0:2] CAS# RAS# CKE[0:2] CS[0:2]# WE# BA[0:1] U505 U506 DDR_CS[0:2]# DDR_ WE# DDR_ BA[0:1] U507 U508...
  • Page 132 8381 N/B Maintenance 8.6 Memory Test Error Symptom: Either on board or extend DDR RAM is failure or system hangs up. Memory Test Error 1.If your system installed with expansion DIMM module then check them for proper Check installation. U12,U13,U10,U11 2.Make sure that your DIMM sockets are OK.
  • Page 133 8381 N/B Maintenance 8.7 Keyboard (K/B) Touch-Pad (T/P) Test Error Symptom: Error message of keyboard or touch-pad failure is shown or any key does not work. +3VS R149 KBD_US/JP# KI [0:7] LPC_LAD0 KO [0:15] LPC_LAD1 U516 LPC_LAD2 KeyBoard Controller South Bridge...
  • Page 134 8381 N/B Maintenance 8.7 Keyboard (K/B) Touch-Pad (T/P) Test Error Symptom: Error message of keyboard or touch-pad failure is shown or any key does not work. Keyboard or Touch-Pad Test Error Check U516, J5, J6 Re-soldering Is K/B or for cold Solder?
  • Page 135 8381 N/B Maintenance 8.8 Hard Disk Driver Test Error Symptom: Either an error message is shown, or the drive motor spins non-stop, while reading data from or writing data to hard-disk. 41,42 +CON2_HDD_5VS C191 C209 C784 1000F +5VS R617 CON2_PCIRST#...
  • Page 136 8381 N/B Maintenance 8.8 Hard Disk Driver Test Error Symptom: Either an error message is shown, or the drive motor spins non-stop, while reading data from or writing data to hard-disk. Hard Driver Test Error 1. Check if BIOS setup is OK?.
  • Page 137 8381 N/B Maintenance 8.9 CD-ROM Driver Test Error Symptom: An error message is shown when reading data from CD-ROM drive. J505 38,39,40,41,42 C237 C238 +CON2_CD_5VS C588 0.1U 0.1U +5VS R617 CON2_CD_PCIRST# PCIRST# Q515 PCI_RESET# DTC144TKA Q516 DTC144TKA RSDDREQ CON2_RSDDREQ IDE_SDDREQ...
  • Page 138 8381 N/B Maintenance 8.9 CD-ROM Driver Test Error Symptom: An error message is shown when reading data from CD-ROM drive. CD-ROM Driver Test Error 1. Try another known good compact disk. Board-level 2. Check install for correctly. Troubleshooting One of the following parts or signals on the motherboard may be defective, use an oscilloscope to check the signals or replace the parts one at a time and test after each replacement.
  • Page 139 8381 N/B Maintenance 8.10 USB Test Error (1) Symptom: An error occurs when a USB I/O device is installed. Mother Board Charge Board L514 120Z/100M U501 C502 1000P USB_OC0# +VCC_USB_0 USB_OC0# RP36 USBP0+ L507 120Z/100M 27*4 L508 USBP0+ D/USBP0+ 90Z/100M...
  • Page 140 8381 N/B Maintenance 8.10 USB Test Error (2) Symptom: An error occurs when a USB I/O device is installed. Mother Board Charge Board 120Z/100M R502 0.1U USB_OC1# +VCC_USB_2 R501 USB_OC1# RP41 L503 120Z/100M USBP2+ 27*4 USBP2+ D/USBP2+ South- L502 90Z/100M...

  • Page 141: Usb Test Error

    8381 N/B Maintenance 8.10 USB Test Error Symptom: An error occurs when a USB I/O device is installed. USB Test Error Check if the USB device is installed properly. (Including charge board.) Check the following parts for cold solder or one of the following...

  • Page 142: Pc-Card Socket Fail

    8381 N/B Maintenance 8.11 PC-Card Socket Failure Symptom : An error occurs when a PC card device is installed. CARD_VCC +3VS +5VS R708 R666 R659 R699 3,4,16 VCC5_EN# R709 R715 13,12,11 +3VS U515 VCC3_EN# VPPOUT 52,18 VPPD0 PCI_AD [0:31] TPS2211...
  • Page 143 8381 N/B Maintenance 8.11 PC-Card Socket Failure Symptom : An error occurs when a PC card device is installed. PC Card Test Error 1. Check if the PC CARD device is installed properly. Board-level Check the following parts for cold solder or one of the following 2.

  • Page 144: Lan Test Error

    8381 N/B Maintenance 8.12 LAN Test Error Symptom: An error occurs when a LAN device is installed. RP518 22*4 LAN_MRXD0 LAN_MRXD0_2 J508 LAN_MRXD1 LAN_MRXD1 _2 R603 R601 LAN_MRXD2 LAN_MRXD2 _2 49.9 49.9 PJTX+ LAN_MRXD3 _2 LAN_MRXD3 L539 PJTX- 120Z LAN_TXP...
  • Page 145 8381 N/B Maintenance 8.12 LAN Test Error Symptom: An error occurs when a LAN device is installed. LAN Test Error 1.Check if the driver is installed properly 2.Check if the notebook connect with the Check the following parts for cold solder or one of the following...

  • Page 146: Audio Failure

    8381 N/B Maintenance 8.13 Audio Failure Symptom: No sound from speaker after audio driver is installed. +5VS JS502 +3VS Input Of Audio Subsystem L558 C767 R744 R745 120Z/100M 2.2K 6.8K C236 C222 C230 C781 C225 C760 C764 C763 4.7U 0.1U 0.1U...
  • Page 147 8381 N/B Maintenance 8.13 Audio Failure Symptom: No sound from speaker after audio driver is installed. +5V_T +5V_AMP Output Of Audio Subsystem AMPLIFIER L557 TPA0212 L515 ROUT+ ROUT+ ROUT+ PVDD0 ROUT- ROUT- ROUT- PVDD1 L516 C756 C233 R Internal 100U 0.1U...
  • Page 148 8381 N/B Maintenance 8.13 Audio Failure Symptom: No sound from speaker after audio driver is installed. Audio Drive Failure 1. Check if speaker cables are connected properly. 2. Make sure all the drivers are installed Board-level properly. Check the following parts for cold solder or one of the following parts on the...

  • Page 149: Mini Pci Test Error

    8381 N/B Maintenance 8.14 Mini PCI Test Error Symptom: An error message is shown after Mini PCI device is installed or the Mini PCI device does’t work. PCI_AD [0:31] J509 R677 PCI_AD21 PCI_C/BE# [0:3] PCI_REQ2# PCI_FRAME# PCI_IRDY# PCI_TRDY# PCI_DEVSEL# PCI_STOP#...
  • Page 150 8381 N/B Maintenance 8.14 Mini PCI Test Error Symptom: An error message is shown after Mini PCI device is installed or the Mini PCI device does’t work. Mini PCI Test Error 1.Check if the Mini PCI device is installed properly.

  • Page 151: Spare Parts List

    8381 N/B Maintenance 9. 8381 Spare Part List-1 Part Number Description Location(S) Part Number Description Location(S) 526267881002 AC ADPT ASSY;19V,4.74A,FSP FSP09 272001105402 CAP; 0.0047U CR 50V 10% 0603 X7 324180786557 ADHESIVE;ABS+PC PACK,G485,CEMIDA 272001225401 CAP; 0.22U CR 50V +80-20% 0603 416267881005 ADHESIVE;HEAT,TRANSFER,HTA-48(W)

  • Page 152: Spare Part List

    8381 N/B Maintenance 9. 8381 Spare Part List-2 Part Number Description Location(S) Part Number Description Location(S) 272075121301 CAP;100P,2KV,5%,1206,NPO,SMT,onl 411678800005 CAP;1U ,CR,10V ,80-20%,0603,Y5 272075301302 CAP;10P ,50V ,+-10%,0603,NPO,SM 271002472301 CAP;1U ,CR,10V,10%,0805,X5R,SM PR505,PR506 272073103401 CAP;10P ,50V ,10%,0603,COG,SMT 271045107101 CAP;1U ,CR,16V ,-20+80%,0805,Y5 PR501 271071221301 CAP;10P ,CR,50V ,5%,0603,NPO,SM...
  • Page 153 8381 N/B Maintenance 9. 8381 Spare Part List-3 Part Number Description Location(S) Part Number Description Location(S) 271071474301 CAP;5P ,CR,50V,+ -.5PF,0603,NP PR502 272993106001 CON;HDR,FM,35P*2,1.27,H2.2,CEN,S PC4,PC507,PC513 271071499111 CAP;5P,3KV,5%,1808,NPO,SMT,only PR514 273000130038 CON;HDR,MA,10P*2,1MM,H4.25,ST,SM L515,L516 271071499311 CAP;680P ,50V ,10%,0603,X7R,SMT PR526 273000150013 CON;HDR,MA,12P,1MM,ACES1212,SMT L1,L2,L513,L514,PL1,PL2,PL501,PL502,PL503,PL5 271071536311 CAP;68P ,50V ,5% ,0603,NPO,SMT...
  • Page 154 8381 N/B Maintenance 9. 8381 Spare Part List-4 Part Number Description Location(S) Part Number Description Location(S) 288204407001 COVER ASSY;LCD,8081 PQ1,PQ505,PQ508 345676400027 DIODE;BZV55-C20,ZENER,5%,SOD-80, 288204807001 COVER ASSY;MINI-PCI,8081 PU502 346670500008 DIODE;BZV55-C24,ZENER,5%,SOD-80, 288227002006 COVER ASSY;SPEAKER,8081 PQ2,PQ501,PQ510,PQ511 346676400001 DIODE;BZV55-C2V4,ZENER,5%,SOD-80 291000000706 COVER ASSY;TOP,8381 346676400003 DIODE;BZV55-C3V3,ZENER,5%,SOD-80 291000010209 COVER;BATTERY,8081...
  • Page 155 8381 N/B Maintenance 9. 8381 Spare Part List-5 Part Number Description Location(S) Part Number Description Location(S) 271071102172 FERRITE CHIP;600OHM/100MHZ,.2A,1 R625 271071332302 GLUE;TOSHIBA 3941 R733 271071102211 FERRITE CHIP;600OHM/100MHZ,1608, 271071361101 HD DRIVE,30GB,2.5",MHT2030AT,FUJ R133,R609 271071102302 FERRITE CHIP;600OHM/100MHZ,1608, R181,R212,R3,R511,R626,R635,R69,R70,R71,R734,R737 271071392101 HDD ASSY;30GB,MHT2030AT,FUJITSU, 271071103302 FFC;TOUCH PAD,APOLLON...
  • Page 156 8381 N/B Maintenance 9. 8381 Spare Part List-6 Part Number Description Location(S) Part Number Description Location(S) 271071690101 IC;EEPROM,9346,64*16 BITS,SO8,SM R108,R38 272001105403 IC;VT6103,LAN-PHY,SSOP,48P,SMT PC29,PC39,PC4,PC507,PC9 271071750101 IC;EEPROM,M24C02-WMN6T,2K,SO8,SM R100,R101,R104,R99 272002105701 IC;VT8235,SOUTH BRIDGE,BGA,487P, 271071806112 IC;FLASH,256K*8,PLCC32,LPC,ST49L PR508 272002225701 IC;VT8372,NORTH BRIDGE,HSBGA,552 271071820301 IC;G692L293T,RESET CIRCUIT,2.93V 272002475701 INDUCTOR;10nH,10%,0805,SRF 2.1G,...
  • Page 157 8381 N/B Maintenance 9. 8381 Spare Part List-7 Part Number Description Location(S) Part Number Description Location(S) 272075102403 LABEL;27*10,LAN ID BAR CODE C118 273000111002 LED;RE/GR,H0.8,L1.9,W1.6,19-22SR L537,L539 272075102701 LABEL;27*7MM,HI-TEMP 260'C C12,C191,C2,C201,C226,C229,C239,C240,C29,C44,C5,C56,C625,C648,C650,C652,C654,C656,C658,C660,C662,C664,C666,C668,C670,C70,C775,C810,PC12,PC14,PC15,PC 273000130001 LED;RE/GR,H0.8,L1.9,W1.6,19-22SR L546 272075103401 LABEL;5*20,BLANK,COMMON PC10 273000130038 LT PF;14",XGA,AU,B141XN04,M,8381 L501,L502,L550,L552,L554,L555,R746 272075103702 LABEL;5*20,BLANK,COMMON...
  • Page 158 8381 N/B Maintenance 9. 8381 Spare Part List-8 Part Number Description Location(S) Part Number Description Location(S) 284501032001 PLATE;T/P,GROUND,8081 288105533001 RES;1.5K ,1/16W,5% ,0603,SMT PD502,PD503 284501510002 PWA;PWA-8381,D/D BD,SMT U518 288105543001 RES;10 ,1/16W,5% ,0603,SMT 284502996001 PWA;PWA-8381,D/D BD,T/U PU13 288200114001 RES;10.2K,1/16W,1% ,0603,SMT Q518,Q519 284506103002 PWA;PWA-8381,MOTHER BD...
  • Page 159 8381 N/B Maintenance 9. 8381 Spare Part List-9 Part Number Description Location(S) Part Number Description Location(S) 291000614621 RES;180K ,1/16W,1% ,0603,SMT U504 481678800002 RES;3.3K ,1/16W,5% ,0603,SMT 291000811008 RES;1K ,1/16W,1% ,0603,SMT J508 242600000145 RES;3.3K ,1/16W,5% ,0603,SMT 294011200016 RES;1K ,1/16W,1% ,0603,SMT D14,D15,D16,D17 284582140002 RES;3.9K ,1/16W,1% ,0603,SMT...
  • Page 160 8381 N/B Maintenance 9. 8381 Spare Part List-10 Part Number Description Location(S) Part Number Description Location(S) 344678500015 RES;43.2K,1/16W,1% ,0603,SMT 346678800002 RES;680 ,1/16W,5% ,0603,SMT 340676400019 RES;43K ,1/16W,5% ,0603,SMT 523467880006 RES;68K ,1/16W,1% ,0603,SMT 340676400009 RES;470 ,1/16W,5% ,0603,SMT 523402379037 RES;69.8,1/16W,1%,0603,SMT 341678500001 RES;470K ,1/16W,5% ,0603,SMT 451678800001 RES;732 ,1/16W,1% ,0603,SMT...
  • Page 161 8381 N/B Maintenance 9. 8381 Spare Part List-11 Part Number Description Location(S) Part Number Description Location(S) 441677370002 RP;33*8 ,16P ,1/16W,5% ,1606,SM 346677300005 SOLDER WIRE;63/37,1.2,NA,N/C,PRC 344678500021 RP;4.7K*4,8P ,1/16W,5% ,0612,SMT 361200005001 SPACER;SOCKET 462,TETRA 344678500022 RP;470*4,8P,1/16W,5%,1206,SMT 365350000003 SPC-SCREW;M2 L5,NIB,K-HD,t0.8,NL 361400003030 RP;47K*8 ,10P,1/16W,5% ,1206,SMT 411677370002 SPC-SCREW;M2 L5,NIB,K-HD,t0.8,NL...
  • Page 162 8381 N/B Maintenance 9. 8381 Spare Part List-12 Part Number Description Location(S) Part Number Description Location(S) 288111544001 TAPE;ADHENSIVE,DOUBLE-FACE,W20,U 222671620001 TRANS;MMBT3906L,PNP,Tr35NS,TO236 288200144008 TAPE;INSULATING,POLYESTER FILM,1 421015560001 TRANS;SI2301DS,P-MOSFET,SOT-23 288200717001 THERMAL PAD;NORTH BRIDGE,APOLLON 541667880031 TRANS;SI2302DS,N-MOSFET,SOT-23 316677300001 THERMISTOR;10K,1%,RA,DISK,103AT- 565167880001 TRANS;SI4532DY,N&P-MOSFET,SO8,PR 288208107001 THERMOSETTING BOND;80837,LOCTITE Q2,Q5 222668820003 TRANS;SI4788CY,P-MOS,5A1.8~5.5V,...

  • Page 164: Circuit Diagram

    8381 D/D R00 PWR_VDDIN PD503 BAV70LT1 BAV70LT1 120Z/100M 2012 PD502 EC31QS04 DC2010 AO4407 ADINP 2 D/VMAIN PD501 IDJ-D22B2-6T EC31QS04 DC2010 6.5A/32VDC PR501 PC542 120Z/100M PR506 PR505 JACK-5P PC540 PC535 PC543 0.01U 2012 2512 PR502 4.7K 4.7K PC502 1000P 1000P 0.1U 0603 0.1U...
  • Page 165 CHARGING PQ508 AO4407 PU502B PU502A AO4805 AO4805 PD504 PL506 PL502 ADINP BATT 1 BEAD_120Z/100M 0805D EC31QS04 PC522 33UH DC2010 PC505 PC513 PC506 PC539 PC504 7343 7343 PC519 0.01U PR510 PR511 PR520 PD507 PR534 For Sharp request 1000P 0.1U 0.01U 0.1U 1210 0603 0603...
  • Page 166 L507 USBP0+ U501 L514 120Z/100M 1608 +VCC_USB_0 VIN0 VOUT0 +VCC_USB_0 120Z/100M L508 VIN1 VOUT1 2012 90Z/100M C505 C502 RT9701-CBL CHOKE_ACM2012 2.2U 1000P SOT25 +80-20% +VCC_USB_1 0603 0603D 0603D 0805C L509 C503 GND1 GND1 USBP0- USB_OC0# GND2 220U GND2 L513 7343 +VCC_USB_1 USB/4PX2/DIP 120Z/100M...
  • Page 167 SYSTEM POWER +5V PF501 D/VMAIN_P1 D/VMAIN PL501 TR/3216FF-5A 120Z/100M 2012 PC503 PC509 PC515 1000P 0.01U PC510 PC507 0603 7243 1000P 0603 1210 0603D VDD5 PR537 0603 PR524 PD506 0603 BAS32L PC544 1206 PQ503 AO4404 PC524 0.1U 0805 PR525 PU504 PWRON PWRON EN/PSV PL505...
  • Page 168 ID3.0/OD7.0/SLD9.0 FD501 FD503 FD504 FD502 FIDUCIAL-MARK FIDUCIAL-MARK FIDUCIAL-MARK FIDUCIAL-MARK FIDUCIAL-MARK FIDUCIAL-MARK FIDUCIAL-MARK FIDUCIAL-MARK GND_USB_C DRAWN DESIGN CHECK ISSUES Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 169 TSSOP24 Power plane PLLMON2 470K 0603 CPU_ZN 0603 40.2 282071338302 0603 BX ->H 1A2-5A2 ---->1B1-5B2 Title BX ->L 1A1-5A1 ---->1B1-5B1 8381 Mainboard Schematic Size Document Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 170 0603 C560 0603 C559 0603 Place 4 1000pF Caps Around the CPU Buttom Side of CPU (05/27 Add) Title 8381 Mainboard Schematic Size Document <Doc> Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 171 2200P S2KVREF Close to NB ?????? GNDHCLK 0.1U C151 0.1U 0603 0603 0603 0603 2200P 20mil S2KCOMP 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 172 0603 0603 0603 120Z/100M 2012 2200P 0.1U 0603 0603 1206 +3VS R527 0603 VGA_SUSPEND Q510 12,20,21,22,23,24 SUSB# DTC144TKA Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 173 0603 GNDALPLL GNDALVDS DTC144TKA C526 0.01U/NA LVREF_NB LCOMP_NB 0603 69.8 0603 0.1U 1.13K 0603 0603 Title Close to NB 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 174 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U CLK_DDR5# 0603 0603 0603 0603 0603 0603 0603 0603 CLK_DDR5# Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...

  • Page 175: Ddr Sodimm

    1210 1210 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 CLK_DDR4# CLK_DDR5 Title CLK_DDR5 CLK_DDR5# 8381 Mainboard Schematic CLK_DDR5# Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 176 0/NA 1U/NA 0805C 0603 11,23 D/USBP3- USB_OC1# 0603 GND_USB_C GND_USB 11,23 USB_OC1# R501 C503 47K/NA 1000P/NA 0603 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 177 1206 pull high 10K on SPARKGAP_6 JO509 Debug Board SPARKGAP_6 Close to Connector CRT_C_GND Title CLOSE TO CRT CONNECTOR 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 178 +3VS +3VS 0603 NC7S32/NA C202 1U/NA CPURST# 0603 DTC144TKA 10K/NA 0603 R169 6,14,15,16,20,21 PCI_RESET# SB_PWRGOOD 2,12,22 0/NA 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 179 FROMHW# 0/NA R124 0603 R122 0603 1 : R:enable->100 ; R:disable->133MHz 2 : R:enable->From H/W ; R:disable->From ROM Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 180 0603 SMBDATA2 R176 SB_VLREF 0603D Close to SB SMBCLK2 R168 C684 R638 0603D 1.13K 0.1U 10MIL 0603 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 181 0603 RCS3S# 0603D IDE_SDCS3# R201 SI2301DS IDE_SDCS1# R116 0603 RCS1S# 0603 IDE_SDCS1# USB_HDD_LED Title 8381 Mainboard Schematic USB HDD LED indicator Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet 5VS_CDROM PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 182 0.1U 0603 0603 0603 0603 C714 C716 TPS2211 SSOP16 0.1U 0.1U C715 C707 0603 0603 2.2U 1206 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 183 0.1U 1210 0603 0603 0603 +3VS C691 C770 C771 C772 0.1U 0.1U 0.1U 0.1U 0603 0603 0603 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 184 R596 R599 C148 0603 49.9 49.9 0.1U R598 0603 0603 0603 C152 1000P 1808 LAN_GND1 C623 0.1U 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Sheet Tuesday, July 15, 2003 PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 185 0/NA 0805C GND_C Check GND_C and GND connection L549 120Z/100M 0805C GND_C R738 MiTAC Technology Corp. Title 8381 Mainboard Schematic 0/NA 0805C Size Document Number <Doc> GND_C Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version...
  • Page 186 C813 JO519 0.01U 0603 SPARKGAP_6 JO501 JO502 GND_C R189 SPK_OFF# H8_SPK_OFF# H8_SPK_OFF# 21 GND_C R244 0603 0603 GND_C Title 8381 Mainboard Schematic Size Document <Doc> Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 187 STS-042-A 47PX4 1206 FPC/FFC-12P/0.5MM 6239-012-001-800 TP_R CONN_ELCO6239_12 291000151201 ESD0805A/NA 12V/50MA/NA STS-042-A TP_R D508 SW_RIGHT 12V/50MA ESD0805A/NA STS-042-A Title 8381 Mainboard Schematic ESD0805A/NA Size Document <Doc> Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 188 Q505 SW_VDD3# 2OE# R763 C690 DTC144WK 74CBTD3384 0.1U R509 TSSOP24 0603 0603 +5VS 0603 R764 C514 0.1U 0603 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 189 R256 120Z/100M 0603 0603 0.1U DTC144WK SI4788CY 22U/NA 0603 1210 1206 +80-20% R521 35VS_ON 0603 Title 8381 Mainboard Schematic C516 0.1U 0603 Size Document <Doc> Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 190 SHORT-SMT1 JP_SMT1 D/BATT_V BATT_V SHORT-SMT1 JP_SMT1 D/BATT_T BATT_T SHORT-SMT1 JP_SMT1 D/SMC_H8 SMC_H8 SHORT-SMT1 JP_SMT1 D/SMD_H8 SMD_H8 SHORT-SMT1 Title JP_SMT1 8381 Mainboard Schematic Size Document <Doc> Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 191 PC534 PC529 GND4 PC537 220U 220U GND5 PD502 0.1U 7343 7343 0603 2.5V 2.5V BZV55-C3V3 LP2996 SO8_GND_4 MLL34B Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 192 NC7WZ07 0603 SC70_6_EIAJ PR26 R511 0/NA 0603 0603 PWRGDCPU +CPU_CORE PWRGDCPU 2 PR13 C125 0603 0603 0603 Title PWRGD 8381 Mainboard Schematic Size Document <Doc> Number Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 193 RDDP7 RDDP14 H_RDDP14 RDDP14 SMBDATA U_SDA SYS_BUS_OFF 21,22 SMBDATA0 1OE# 2OE# SYS_BUS_OFF 1OE# Title 74CBTD3384 2OE# TSSOP24 8381 Mainboard Schematic 74CBTD3384 TSSOP24 Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 194 CON2_CD_LED# 14,26 H_RDDP7 CD_LED# H_RDDP8 CON2_H_RDDP8 RCS1S# CON2_RCS1S# 14,26 H_RDDP8 RCS1S# H_PCIRST# CON2_PCIRST# 14,26 H_PCIRST# RDAS0 CON2_RDAS0 RDAS0 Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 195 Touch Pad Mic-in Connector Internal System Speaker BIOS Keyboard BIOS KEY MATRIX Internal Hitachi Keyboard H8/2140 Headphone Connector Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 196 CPUSTP#/PCISTP# inactive to SUSTAT# inactive SUS[A-C] hhhhhhhhhfllllllllllrhhhhhhh SUSTAT# inactive to PCIRST# inactive PWRGD hhhhhhhhhhflllllllllllrhhhhh RTCCLK PCIRST# hhhhhhhhhhhfl"""""""""llllrh Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...
  • Page 197 USBPWR_ON 23 0603 R205 USBPWR_ON_H8 21 2.7K/NA 0603 DTC144WK DTC144TKA/NA R245 10K/NA 0603 Change BOM to 1% 10K Title 8381 Mainboard Schematic Size Document Number <Doc> Date: Tuesday, July 15, 2003 Sheet PDF created with FinePrint pdfFactory trial version http://www.fineprint.com...

  • Page 198: Reference Material

    AMD Athlon XP Processor Model8 Data Sheet …………………….. … AMD Corp q VIA VT8372 North Bridge …………………………………… VIA Technology INC q VIA VT8235 South Bridge …………………………………… VIA Technology INC q HITACH H8S/2149 Hardare Specification….………………………. MITACH INC q 8381 Hardware Engineering Specification ……………. Technology Corp./MiTAC...
  • Page 199 SERVICE MANUAL FOR N/B8381 Sponsoring Editor : Jesse Jan Author : Valley Hu Assistant Editor : Ping Xie Publisher : MiTAC International Corp. Address : 1, R&D Road 2, Hsinchu Science-Based Industrial, Hsinchu, Taiwan, R.O.C. Tel : 886-3-5779250 Fax : 886-3-5781245 First Edition : July.

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