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MiTAC 8050QMA Service Manual

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SERVICE MANUAL FOR
SERVICE MANUAL FOR
SERVICE MANUAL FOR
8050QMA
8050QMA
8050QMA
BY: ZX Xiao
Repair Technology Research Department /EDVD
Repair Technology Research Department /EDVD
Jun.2005 / R01

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Summary of Contents for MiTAC 8050QMA

  • Page 1 SERVICE MANUAL FOR SERVICE MANUAL FOR SERVICE MANUAL FOR 8050QMA 8050QMA 8050QMA BY: ZX Xiao Repair Technology Research Department /EDVD Repair Technology Research Department /EDVD Jun.2005 / R01...

  • Page 2: Table Of Contents

    50QMA N/B Maintenance 50QMA N/B Maintenance Contents 1. Hardware Engineering Specification ……………………………………………………………………… 1.1 Introduction ……………………………………………………………………………………………………………….. 1.2 System Hardware Parts …………………………………………………………………………………………………... 1.3 Other Functions …………………………………………………………………………………………………………… 1.4 Power Management ………………………………………………………………………………………………………. 1.5 Appendix 1 : Intel ICH6-M GPIO Definitions …………………………………………………………………………. 1.6 Appendix 2 : W83L950D KBC Pins Definitions ………………………………………………………………………… 1.7 Appendix 3 : 8050QMA Product Spec ………………………………………………………………………………..
  • Page 3 50QMA N/B Maintenance 50QMA N/B Maintenance Contents 5. Pin Description of Major Component …….………………………………………………………………. 5.1 Intel 915PM North Bridge ………………………………………………………………………………………………. 5.2 Intel ICH6-M South Bridge ……………………………………………………………………………………………… 6. System Block Diagram ……………………………………………………………………………………… 7. Maintenance Diagnostics …………………………………………………………………………………… 7.1 Introduction ……………………………………………………………………………………………………………….. 7.2 Maintenance Diagnostics………………………………………………………………………………………………….. 7.3 Error Codes ………………………………………………………………………………………………………………..
  • Page 4 50QMA N/B Maintenance 50QMA N/B Maintenance Contents 8.12 PC Card Socket Failure ………………………………………………………………………………………………… 9. Spare Parts List ……………………………………………………………………………………………... 10. Reference Material …...…………………………………………………………………………………….

  • Page 5: Hardware Engineering Specification

    This document describes the brief introduction for MiTAC 8050QMA portable notebook computer system. 1.1.2 System Overview The MiTAC 8050Q model is designed for Intel Dothan processor with 533MHz FSB with Micro-FCPGA package. This system is based on PCI architecture and is fully compatible with IBM PC/AT specification, which has standard hardware peripheral interface.
  • Page 6 50QMA N/B Maintenance 50QMA N/B Maintenance (DMI) connecting with Intel ICH6-M. The Intel ICH6-M integrates three Universal Serial Bus 2.0 Host Controllers Interface (UHCI), the Audio Controller with AC97 interface, the Ethernet includes a 32-bit PCI controller, the IDE Master/Slave controllers, the SATA controller and Direct Media Interface technology.
  • Page 7 50QMA N/B Maintenance 50QMA N/B Maintenance configurations, so that compact, high performance systems can be implemented easily. A full set of software drivers and utilities are available to allow advanced operating systems such as Windows ME, Windows 2000 and Windows XP to take full advantage of the hardware capabilities. Features such as bus mastering IDE, Plug and Play, Advanced Power Management (APM) with application restart, software-controlled power shutdown.

  • Page 8: System Hardware Parts

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.2 System Hardware Parts Intel® Pentium® M Processor (Dothan) 90nm, 2M L2, 533 MHz FSB Intel® Celeron® M processor, 90nm, 512K L2, 400 MHz FSB Intel 915PM + ICH6-M chipset Core logic SST49LF004A System BIOS 0MB DDR2-SDRAM on Board Expandable with combination of optional 128MB/256MB/512MB/1GB(P) memory Memory...

  • Page 9: Clock Generator

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.2.1 Intel Dothan Processors in Micro-FCBGA Package Intel Dothan Processors with 479 pins Micro-FCBGA package. It will be manufactured on Intel’s advanced 90 nanometer process technology with copper interconnect. It’s features include Intel Architecture with Dynamic Execution, On-die primary 32-kB instruction cache and 32-kB write-back data cache, on-die 2-MB second level cache with advanced Transfer Cache Architecture, Data Prefetch Logic, Streaming SIMD Extensions 2 (SSE2), 533-MHz FSB.
  • Page 10 50QMA N/B Maintenance 50QMA N/B Maintenance • Supports tight ppm accuracy clocks for Serial-ATA and SRC. • Supports spread spectrum modulation, 0 to –0.5% down spread. • Uses external 14.318MHz crystal, external crystal load caps are required for frequency tuning. •...
  • Page 11 50QMA N/B Maintenance 50QMA N/B Maintenance • ® Intel Dothan processor • AGTL+ bus driver technology with integrated GTL termination resistors (gated AGTL+ receivers for reduced power) • Supports 32-bit AGTL+ host bus addressing • Supports system bus at 533MT/s (533 MHz) and 400MT/s (400 MHz) •...
  • Page 12 50QMA N/B Maintenance 50QMA N/B Maintenance • 256-MB, 512-MB and 1-GB technology using x8 and x16 devices. • Three memory channel organizations are supported for DDR / DDR2 : – Single channel – Dual channel interleaved – Dual channel asymmetric •...
  • Page 13 50QMA N/B Maintenance 50QMA N/B Maintenance • Supports only 1.5-V AGP electrics • 32 deep AGP request queue • Hierarchical PCI-compliant configuration mechanism for downstream devices • Direct Media Interface (DMI) – Chip-to-chip interconnect between the GMCH and ICH6-M – DMI x2 and DMI x4 configuration supported –...
  • Page 14 50QMA N/B Maintenance 50QMA N/B Maintenance • Integrated Serial ATA host controller with independent DMA operation on two ports and AHCI support • Integrated IDE controller supports Ultra ATA100/66/33 • USB host interface with support for three USB ports; three UHCI host controllers; one EHCI high-speed USB2.0 Host controller •...
  • Page 15 50QMA N/B Maintenance 50QMA N/B Maintenance Pin out Compatible with CB1410 • PCI Interface – Compliant with PCI Local Bus Specification Revision 2.3 – Compliant with PCI Bus Power Management Interface Specification Revision 1.1 – Compliant with PCI Mobile Design Guide Version 1.1 –...
  • Page 16 50QMA N/B Maintenance 50QMA N/B Maintenance • Memory Stick Interface – Compliant with Memory Stick PRO Format Specification Version 1.0 – Support 4-bit Parallel Data Transfer Mode – Memory Stick Clock Frequency Up to 40Mhz – Support DMA Mode to Minimize CPU Overhead –...
  • Page 17 50QMA N/B Maintenance 50QMA N/B Maintenance • Support parallel 4-wire power switch interface 1.2.6 AC’97 Audio System: Advance Logic, Inc, ALC655 The ALC655 is a 16-bit, full duplex AC'97 2.3 compatible six channels audio CODEC designed for PC multimedia systems, including host/soft audio and AMR/CNR based designs. The ALC655 incorporates proprietary converter technology to meet performance requirements on PC99/2001 systems.
  • Page 18 50QMA N/B Maintenance 50QMA N/B Maintenance • Meets performance requirements for audio on PC99/2001 systems • Meets Microsoft WHQL/WLP 2.0 audio requirements • 16-bit Stereo full-duplex CODEC with 48KHz sampling rate • Compliant with AC’97 2.3 specifications – 14.318MHz- 24.576MHz PLL to save crystal –...
  • Page 19 50QMA N/B Maintenance 50QMA N/B Maintenance • Stereo MIC record for AEC/BF application • Supports Power Off CD function • Adjustable VREFOUT control Supports double sampling rate (96KHz) of DVD audio playback • Support 48KHz of S/PDIF output is compliant with AC’97 rev2.3 specification •...
  • Page 20 50QMA N/B Maintenance 50QMA N/B Maintenance small outline packages (AC’97 interface on PCT303A and phone-line interface on PCT303W). The chip set eliminates the need for an AFE, an isolation transformer, relays, opto-isolators, and 2-to 4-wire hybrid. The PCT2303W chip set dramatically reduces the number of discrete components and cost required to achieve compliance with international regulatory requirements.
  • Page 21 50QMA N/B Maintenance 50QMA N/B Maintenance • 2-4-wire hybrid • Integrated ring detector • High voltage isolation of 4000V • Support for “Caller ID” • Compliant with FCC Part68, CTR21, Net4 and JATE • Low power standby • Low profile SOIC package 16 pins 10x3x1.55mm •...
  • Page 22 50QMA N/B Maintenance 50QMA N/B Maintenance Standard Features • Data – ITU-T V.90 (56Kbps), V.34 (4.8Kbps TO 33.6 Kbps), V.32 bis (4.8Kbps to 14.4Kbps), V.22 bis (1.2 bps to 2.4 Kbps), V.21 and Bell 103 and 212A(300 to 1200 bps) modulation protocol –...
  • Page 23 50QMA N/B Maintenance 50QMA N/B Maintenance 1.2.8 IEEE1394 VT6301S 1.2.8.1 Overview The VT6301S IEEE 1394 OHCI Host Controller provides high performance serial connectivity. It implements the Link and Phy layers for IEEE 1394-1995 High Performance Serial Bus specification release 1.0 and 1394a- 2000.
  • Page 24 50QMA N/B Maintenance 50QMA N/B Maintenance • 3-deep physical post-write queue • 2-deep physical response queue • Dual buffer mode enhancements • Skip Processing enhancements • Block Read Request handling • Ack_tardy processing 1.2.9 System Flash Memory (BIOS) Firmware Hub for Intel® 810, 810E, 815, 815E,815EP, 820, 840, 850 Chipsets Flexible Erase Capability –...

  • Page 25: Memory System

    50QMA N/B Maintenance 50QMA N/B Maintenance – Chip-Erase for PP Mode Single 3.0-3.6V Read and Write Operations Superior Reliability Firmware Hub Hardware Interface Mode Supports Intel High Definition Audio – 5-signal communication interface supporting byte Read and Write – 33 MHz clock frequency operation –...
  • Page 26 50QMA N/B Maintenance 50QMA N/B Maintenance • JEDEC standard 1.8V I/O (SSTL_18-compatible) • Differential data strobe (DQS,DQS#) option • Four-bit prefetch architecture • Differential clock input (CK,CK#) • Command entered on each rising CK edge • DQS edge-aligned with data for Reads •...
  • Page 27 50QMA N/B Maintenance 50QMA N/B Maintenance • Programmable burst lengths : 4 or 8 • Read burst interrupt supported by another READ • Write burst interrupt supported by another WRITE • Adjustable data – output drive strength • Concurrent auto precharge option is supported •...
  • Page 28 50QMA N/B Maintenance 50QMA N/B Maintenance Management (OSPM) to achieve the most efficient power management possible. The RTL8100C(L) does not support CardBus mode as the RTL8139C does. In addition to the ACPI feature, the RTL8100C(L) also supports remote wake-up (including AMD Magic Packet, LinkChg, and Microsoft® wake-up frame) in both ACPI and APM environments.
  • Page 29 50QMA N/B Maintenance 50QMA N/B Maintenance 2. Supports PCI clock 16.75MHz-40MHz 3. Supports PCI target fast back-to-back transaction 4. Provides PCI bus master data transfers and PCI memory space or I/O space mapped data transfers of RTL8100C(L)'s operational registers 5. Supports PCI VPD (Vital Product Data) 6.
  • Page 30 50QMA N/B Maintenance 50QMA N/B Maintenance • Advanced power saving mode when LAN function or wakeup function is not used • Uses 93C46 (64*16-bit EEPROM) to store resource configuration, ID parameter and VPD data • Supports LED pins for various network activity indications •...

  • Page 31: Hard Disk Drive

    50QMA N/B Maintenance 50QMA N/B Maintenance • Support 2 PWM channels, 2 D-A and 8 A-D converters • Reduce Firmware burden by Hardware PS/2 decoding • Support 72 useful GPIOs totally • Support Flash utility for on board re-flash • Support ACPI •...
  • Page 32 50QMA N/B Maintenance 50QMA N/B Maintenance • Ultra ATA/33/66/100: DMA protocol that redefines signals on the IDE cable to allow both host and target throttling of data and transfer rates of up to 33/66/100 MB/s...

  • Page 33: Other Functions

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.3 Other Functions 1.3.1 Hot Key Function Keys Feature Meaning Combination Fn + F1 Power down Mini PCI power down Fn + F2 Reserve Fn + F3 Volume Down Fn + F4 Volume Up Rotate display mode in LCD only, CRT only, and Fn + F5 LCD/external CRT switching...

  • Page 34: Cover Switch

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.3.2 Power On/Off/Suspend/Resume Button 1.3.2.1 APM Mode At APM mode, Power button is on/off system power. 1.3.2.2 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 35: Led Indicators

    50QMA N/B Maintenance 50QMA N/B Maintenance 3. Off 4. Hibernate (must enable hibernate function in power management) 1.3.4 LED Indicators 1.3.4.1 Three LED Indicators at Front Side: From left to right that indicate BATTERY POWER, BATTERY STATUS and AC POWER -- AC POWER: This LED lights green when the notebook was powered by AC power line, Flashes (on 1 second, off 1 second) when entered suspend to RAM state with AC powered.

  • Page 36: Battery Status

    50QMA N/B Maintenance 50QMA N/B Maintenance connected, this indicator glows green if the battery pack is fully charged or orange (amber) if the battery is being charged. This LED lights green when AC is powering the notebook, and flash (on 1 second, off 1 second) AC POWER: when Suspend to RAM no matter using AC power or Battery power.

  • Page 37: Cmos Battery

    50QMA N/B Maintenance 50QMA N/B Maintenance -- Battery Warning: Capacity below 10%, Battery Capacity LED flashes , and system beeps per 2 seconds. -- System will Suspend to HDD after 2 Minutes to protect users data. 1.3.5.2 Battery Low State After Battery Warning State, and battery capacity is below 5%, system will generate beep sound for twice per second.
  • Page 38 50QMA N/B Maintenance 50QMA N/B Maintenance When AC in or system main battery inside, CMOS battery will consume no power. AC or main battery not exists, CMOS battery life at less (220mAh/5.8uA) 4 years. 1.3.8 I/O Port One Power Supply Jack One External DVI-I Connector For DVI Display Supports four USB port for all USB devices.
  • Page 39 50QMA N/B Maintenance 50QMA N/B Maintenance Line in Jack 1.3.9 Battery Current Limit and Learning Implanted H/W current limit and battery learning circuit to enhance protection of battery.

  • Page 40: Power Management

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.4 Power Management The 8050MB system has built in several power saving modes to prolong the battery usage for mobile purpose. User can enable and configure different degrees of power management modes via ROM CMOS setup (booting by pressing F2 key).
  • Page 41 50QMA N/B Maintenance 50QMA N/B Maintenance -- LCD: backlight off -- HDD: spin down 1.4.1.4 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: Suspend to DRAM -- CPU: off -- Intel 915GM: Partial off...

  • Page 42: Other Power Management Functions

    50QMA N/B Maintenance 50QMA N/B Maintenance -- All system status will be restored when powered on again 1.4.2 Other Power Management Functions Implanted H/W current limit and battery learning circuit to enhance protection of battery. 1.4.2.1 HDD & Video Access System has the ability to monitor video and hard disk activity.

  • Page 43: Appendix 1: Intel Ich6-M Gpio Definitions

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.5 Appendix 1: Intel ICH6-M GPIO Definitions (1) Pin name Current Define Power plane GPIO0 PCI_REQ6# MAIN GPIO1 MINIPCI_ACT# MAIN GPIO2 PCI_INTE# MAIN GPIO3 PCI_INTF# MAIN GPIO4 PCI_INTG# MAIN GPIO5 PCI_INTH# MAIN GPIO6 PM_BMBUSY# MAIN GPIO9 RESUME...
  • Page 44 50QMA N/B Maintenance 50QMA N/B Maintenance 1.5 Appendix 1: Intel ICH6-M GPIO Definitions (2) Continue to previous page Pin name Current Define Power plane GPIO28 RESUME GPIO29 PANEL_ID1 MAIN GPIO30 PANEL_ID2 MAIN GPIO31 PANEL_ID3 MAIN GPIO32 PCLKRUN# MAIN GPIO33 MB_ID0 MAIN GPIO34 MB_ID1...

  • Page 45: Appendix 2: W83L950D Kbc Pins Definitions

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.6 Appendix 2: W83L950D KBC Pins Definitions (1) Port Function Implement KO[0..7] Scan matrix KO[8..15] KI[0..7] LPC enable H8_THRM# GPIO x1 H8_WAKE_UP# BATT_G# SMBUS1 or UART BATT_R# EXTSMI# CAP# GPIO x4 NUM# SCROLL# H8_ENABKL Xcin/cout or PWM 2,3 CHARGING LEARING...
  • Page 46 50QMA N/B Maintenance 50QMA N/B Maintenance 1.6 Appendix 2: W83L950D KBC Pins Definitions (2) Continue to previous page Port Function Implement PWRBTN# KBC_RI# AC_ POWER# BATT_V A/D (INT5-12) BATT_T H8_I_LIMIT H8_PROCHOT# +BC_CPUCORE T_DATA H8_RSMRST ICH_PWRBTN PS/2 port x3 T_CLK H8_PWRON_SUSB# SUSC# BAT_DATA SMBUS...

  • Page 47: Appendix 3: 8050Qma Product Spec

    50QMA N/B Maintenance 50QMA N/B Maintenance 1.7 Appendix 3: 8050QMA Product Spec (1) Item Description Intel® Pentium® M Processor (Dothan) 90nm, 2M L2, 533 MHz FSB Intel® Celeron® M processor, 90nm, 512K L2, 400 MHz FSB - CPU Thermal ceiling: 27W Intel 915PM + ICH6M - Dual Channel Memory Support Core logic...
  • Page 48 50QMA N/B Maintenance 50QMA N/B Maintenance 1.7 Appendix 3: 8050QMA Product Spec (2) Continue to previous page Item Description - AC97, support S/PDIF output - 5.1 channel analog output Audio/AV Function - 2.1 channel system speaker. two full range speakers(1W*2 Front), one subwoofer(3W) - Build in microphone Multi Card reader - 4 in 1 Card Reader (SD/MMC/MS/MS Pro)
  • Page 49 50QMA N/B Maintenance 50QMA N/B Maintenance 1.7 Appendix 3: 8050QMA Product Spec (3) Continue to previous page Item Description PCI 10/100 LAN MDC 56K, V.90 Modem Communication 802.11g wireless LAN (Mini PCI optional) with built-in Antenna 6 cell Li-ion (2400mAH/3.7V) Battery pack Power Supply Battery Life >...

  • Page 50: System View And Disassembly

    50QMA N/B Maintenance 50QMA N/B Maintenance 2. System View and Disassembly 2.1 System View 2.1.1 Front View 1394 Port Line Out Connector Line In Connector MIC In Connector MS/SD/MMC Card Slot Top Cover Latch 2.1.2 Left-side View DVI Port USB Ports *2 S-Video Port Ventilation Openings RJ-11 Connector...
  • Page 51 50QMA N/B Maintenance 50QMA N/B Maintenance 2.1.3 Right-side View CD/DVD-ROM Drive Kensington Lock 2.1.4 Rear View Lock AC Power Connector USB Ports *2...

  • Page 52: Bottom View

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.1.5 Bottom View Hard Disk Drive Battery Park Stereo Speaker Set 2.1.6 Top-open View LCD Screen Power Button Stereo Speaker Set Keyboard Internal MIC In Device LED Indicators Touch Pad AC Power Indicator Battery Charge Indicator Battery Power Indicator...

  • Page 53: Tools Introduction

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.2 Tools Introduction 1. Minus screw driver with bit size 2mm for notebook assembly & disassembly. 2. Auto screw driver for notebook assembly & disassembly. Bit Size Screw Size Tooling Tor. Bit Size 1. M2.0 Auto-Screw driver 2.0-2.5 kg/cm2...

  • Page 54: System Disassembly

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3 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 55: Battery Pack

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.1 Battery Pack Disassembly 1. Carefully put the notebook upside down. 2. Slide the two release lever outwards to the “unlock” position ( ), while take the battery pack out of the compartment ( ). (Figure 2-1) Figure 2-1 Remove the battery pack Reassembly 1.
  • Page 56 50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.2 Keyboard Disassembly 1. Remove the battery pack. (Refer to section 2.3.1 Disassembly) 2. Open the top cover. 3. Loosen the five latches locking the keyboard. (Figure 2-2) Figure 2-2 Loose the five latches...
  • Page 57 50QMA N/B Maintenance 50QMA N/B Maintenance 4. Slightly lift up the keyboard and disconnect the cable from the system board, then separate the keyboard. (Figure 2-3) Figure 2-3 Free the keyboard Reassembly 1. Reconnect the keyboard cable and fit the keyboard back into place. 2.
  • Page 58 50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.3 CPU Disassembly 1. Remove the battery pack. (Refer to section 2.3.1 Disassembly) 2. Remove the seven screws fastening the CPU cover. (Figure 2-4) 3. Remove the four spring screws and two screws that secure the heatsink upon the CPU and disconnect the fan’s power cord from the system board.
  • Page 59 50QMA N/B Maintenance 50QMA N/B Maintenance 4. To remove the existing CPU, loosen the screw by a flat screwdriver, upraise the CPU socket to unlock the CPU. (Figure 2-6) Figure 2-6 Remove the CPU Reassembly 1. Carefully, align the arrowhead corner of the CPU with the beveled corner of the socket, then insert CPU pins into the holes.

  • Page 60: Hdd Module

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.4 HDD Module Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (Refer to section 2.3.1 Disassembly) 2. Remove the two screws fastening the HDD compartment cover. (Figure 2-7) 3. Remove the one screw and slide the HDD module out of the compartment. (Figure 2-8) Figure 2-7 Remove the HDD compartment Figure 2-8 Remove HDD module cover...
  • Page 61 50QMA N/B Maintenance 50QMA N/B Maintenance 4. Remove the four screws to separate the hard disk drive from the bracket, remove the hard disk drive. (Figure 2-9) Figure 2-9 Remove hard disk drive Reassembly 1. Attach the bracket to hard disk drive and secure with four screws. 2.
  • Page 62 50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.5 CD/DVD-ROM Drive Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (See section 2.3.1 Disassembly) 2. Remove the one screw fastening the CD/DVD-ROM drive. (Figure 2-10) 3. Insert a small rod, such as a straightened paper clip, into CD/DVD-ROM drive’s manual eject hole ( ) and push firmly to release the tray.
  • Page 63 50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.6 DDR-SDRAM Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (See section 2.3.1 Disassembly) 2. Remove the seven screws fastening the CPU cover. (Refer to the step 2 of section 2.3.3 Disassembly) Figure 2-11 Remove the SO-DIMM 3.

  • Page 64: Modem Card

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.7 Modem Card Disassembly 1. Carefully put the notebook upside down. Remove the battery pack. (Refer to section 2.3.1 Disassembly) 2. Remove seven screws fastening CPU cover. (Refer to step 2 of section 2.3.3 Disassembly) 3.

  • Page 65: Lcd Assy

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.8 LCD ASSY Disassembly 1. Remove the battery pack, keyboard, CPU, hard disk drive, CD/DVD-ROM drive, DDR and modem card. (See sections 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6 and 2.3.7 Disassembly) 2. Remove the eighteen screws fastening the housing and separate the antenna from the Mini PCI compartment (Figure 2-14) 3.
  • Page 66 50QMA N/B Maintenance 50QMA N/B Maintenance 4. Remove the seven screws and lift the top shielding up, then free the top shielding. (Figure 2-16) 5. Separate the antenna and disconnect the two cables from the system board. (Figure 2-17) Figure 2-16 Remove the seven screws Figure 2-17 Disconnect the two cables and separate the antenna...
  • Page 67 50QMA N/B Maintenance 50QMA N/B Maintenance 6. Remove the two screws and lift the two hinge covers up, then free the two hinge covers. (Figure 2-18) 7. Remove the four screws, then free the LCD assembly. (Figure 2-19) Figure 2-18 Free the two hinge covers Figure 2-19 Free the LCD assembly Reassembly 1.

  • Page 68: Lcd Panel

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.9 LCD Panel Disassembly 1. Remove the battery, keyboard, CPU, hard disk drive, CD/DVD-ROM drive, DDR, modem card and LCD assembly. (Refer to section 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7 and 2.3.8 Disassembly) 2.
  • Page 69 50QMA N/B Maintenance 50QMA N/B Maintenance 5. Remove the four screws that secure the LCD brackets. (Figure 2-22) 6. Disconnect the cable to free the LCD panel. (Figure 2-23) Figure 2-22 Remove the four screws Figure 2-23 Free the LCD panel Reassembly 1.

  • Page 70: Inverter Board

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.10 Inverter Board Disassembly 1. Remove the battery, keyboard, CPU, hard disk drive, CD/DVD-ROM drive, DDR, modem card, LCD assembly and LCD panel. (Refer to section 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8 and 2.3.9 Disassembly) 2.

  • Page 71: System Board

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.11 System Board Disassembly 1. Remove the battery, keyboard, CPU, hard disk drive, CD/DVD-ROM drive, DDR, modem card and LCD assembly. (Refer to sections 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7 and 2.3.8 Disassembly) 2.
  • Page 72 50QMA N/B Maintenance 50QMA N/B Maintenance 4. Disconnect the three speakers’ cables from the system board and separate the (R&L) rear covers. (Figure 2-27) 5. Remove the four screws and lift the system board from the housing. (Figure 2-28) Figure 2-27 Disconnect the cables and Figure 2-28 Remove the four screws separate the rear covers...
  • Page 73 50QMA N/B Maintenance 50QMA N/B Maintenance 6. Remove the two screws and separate the I/O bracket from the system board, then free the system board. (Figure 2-29) Figure 2-29 Free the system board Reassembly 1. Fit the system board into the I/O bracket and secure with two screws. 2.

  • Page 74: Touch Pad

    50QMA N/B Maintenance 50QMA N/B Maintenance 2.3.12 Touch Pad Disassembly 1. Remove the battery pack, keyboard, CPU, hard disk drive, CD/DVD-ROM drive, DDR and modem card. (See sections 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6 and 2.3.7 Disassembly) 2. Remove the top cover. (Refer to the steps 1-3 of 2.3.8 section Disassembly) 3.

  • Page 75: Definition & Location Of Connectors / Switches

    50QMA N/B Maintenance 50QMA N/B Maintenance 3. Definition & Location of Connectors / Switches 3.1 Mother Board (Side A) J1 : Inverter Board Connector J2 : LCD Panel Connector J3 : Internal Left Speaker Connector J4 : Touch-pad Module Connector J5 : Internal Key-board Connector J7 : Internal Right Speaker Connector J8 : PCMCIA Card Connector...

  • Page 76: Mother Board (Side B)

    50QMA N/B Maintenance 50QMA N/B Maintenance 3. Definition & Location of Connectors / Switches 3.2 Mother Board (Side B) PJ701 : AC Adaptor Connector J709 J701&J706 : USB Port Connector J702 J706 J704 J503 J507 J702 : DVI Connector J504 J701 J716 J703 : Battery Connector...

  • Page 77: Definition & Location Of Major Components

    50QMA N/B Maintenance 50QMA N/B Maintenance 4. Definition & Location of Major Components 4.1 Mother Board (Side A) PU2 : +3VS/+5VS Voltage Generator PU3 : Charging Voltage Controller PU5 : CPU_Core Voltage Generator PU6 : +1.5VS/+1.05VS Voltage Generator PU12 : +1.8V_P/0.9VS_P Voltage Generate U7 : CLOCK SYNTHERIZER U13 : WINBOND KBC Controller U14 : SYSTEM BIOS...

  • Page 78: Mother Board (Side B)

    50QMA N/B Maintenance 50QMA N/B Maintenance 4. Definition & Location of Major Components 4.2 Mother Board (Side B) U709 : Intel ICH6-M South Bridge U717 U710 : Intel 915PM North Bridge U709 U711 : Intel Dothan CPU U717 : LAN-RTL8100CL Controller U722 U722 : IEEE1394 Controller U724 : Serial ATA Bridge 88SA8040...

  • Page 79: Pin Description Of Major Component

    50QMA N/B Maintenance 50QMA N/B Maintenance 5. Pin Descriptions of Major Components 5.1 Intel 915PM North Bridge(1) Host Interface Signals Host Interface Signals (Continued) Signal Name Type Description Signal Name Type Description HADS# HDRDY# Host Address Strobe: Host Data Ready: AGTL+ The system bus owner asserts HADS# to indicate the first of two AGTL+...
  • Page 80 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(2) Host Interface Signals (Continued) Host Interface Reference and Compensation Signal Name Type Description Signal Name Type Description HLOCK# HVREF Host Lock: Host Reference Voltage: AGTL+ All CPU bus cycles sampled with the assertion of HLOCK# and Reference voltage input for the Data, Address, and Common clock HADS#, until the negation of HLOCK# must be atomic, i.e.
  • Page 81 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(3) DDR / DDR2 SDRAM Channel A Interface DDR / DDR2 SDRAM Channel A Interface (Continued) Signal Name Type Description Signal Name Type Description SA_DQ[63:0] SA_RAS# Data Bus: RAS Control signal: SSTL1.8/2 DDR / DDR2 Channel A data signal interface to the SDRAM data SSTL1.8/2...
  • Page 82 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(4) DDR / DDR2 SDRAM Channel B Interface DDR / DDR2 SDRAM Channel B Interface (Continued) Signal Name Type Description Signal Name Type Description SB_DQ[63:0] SB_RAS# Data Lines: RAS Control signal: SSTL1.8/2 DDR / DDR2 Channel B data signal interface to the SDRAM data SSTL1.8/2...
  • Page 83 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(5) DDR / DDR2 Common Signals DDR / DDR2 Common Signals (Continued) Signal Name Type Description Signal Name Type Description SM_ODT[3:0] On Die Termination: Active Termination Control. (DDR2 only) SM_CK[1:0], SDRAM Differential Clock: SSTL1.8/2 SM_ODT[1:0]:...
  • Page 84 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(6) CRT DAC Signals Analog TV-out Signals Signal Name Type Description Signal Name Type Description RED Analog Video Outpu t: TVDAC_A TVDAC Channel A Output: This signal is a CRT Analog video output from the internal color TVDAC_A supports the following: palette DAC.
  • Page 85 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(7) Display Data Channel (DDC) and GMBUS Support LVDS Signals Signal Name Type Description Signal Name Type Description LCTLA_CLK I2C Based control signal (Clock) for External SSC clock chip LDVS Channel A control –...
  • Page 86 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(8) Serial DVO Interface. Serial DVO Interface (Continued) Signal Name Type Description Signal Name Type Description SDVO B Interface SDVO C Interface SDVOB_CLKP Serial Digital Video B Clock. SDVOC_CLKP Serial Digital Video C Clock. PCIE Multiplexed with EXP_TXP_3.
  • Page 87 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(9) Reset and Miscellaneous Signals PLL Signals Signal Name Type Description Signal Name Type Description RSTIN# HCLKP Reset In: Differential Host Clock In: HVCMOS When asserted this signal will asynchronously reset the GMCH logic. Diff Clk Differential clock input for the Host PLL.
  • Page 88 50QMA N/B Maintenance 50QMA N/B Maintenance 5.1 Intel 915PM North Bridge(10) Power and Ground Power and Ground (Continued) Interface Ball Name Description Interface Ball Name Description Host VTT (VCCP) FSB power supply (1.05 V) - (VCCP) TVDAC VCCA_TVBG TV DAC Band Gap Power (3.3 V) DRAM VCCA_SM VCCASM is the Analog power supply for SM data buffers used for...

  • Page 89: Intel Ich6-M South Bridge

    50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(1) PCI Interface Signals PCI Interface Signals (Continued) Name Type Description Name Type Description PCI Address/Data: AD[31:0] is a multiplexed address and data bus. Initiator Ready: IRDY# indicates the ICH6's ability, as an initiator, AD[31:0] IRDY# During the first clock of a transaction, AD[31:0] contain a physical...
  • Page 90 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(2) PCI Interface Signals (Continued) Serial ATA Interface Signals Name Type Description Name Type Description Parity Error: An external PCI device drives PERR# when it receives Serial ATA 0 Differential Transmit Pair: These are outbound PERR# SATA[0]TXP data that has a parity error.
  • Page 91 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(3) Serial ATA Interface Signals (Continued) LAN Connect Interface Signals Name Type Description Name Type Description Serial ATA 3 General Purpose: Same function as SATA[0]GP, LAN I/F Clock: This signal is driven by the LAN Connect SATA[3]GP / LAN_CLK except for SATA Port 3.
  • Page 92 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(4) IDE Interface Signals IDE Interface Signals (Continued) Name Type Description Name Type Description IDE Device Chip Selects for 100 Range: For ATA command DIOW# / (DSTOP) Disk I/O Write (PIO and Non-Ultra DMA): This is the command to DCS1# register block.
  • Page 93 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(5) USB Interface Signals EEPROM Interface Signals Name Type Description Name Type Description Universal Serial Bus Port [1:0] Differential: These differential pairs EEPROM Shift Clock: This signal is the serial shift clock output to USBP[0]P, EE_SHCLK are used to transmit Data/Address/Command signals for ports 0 and 1.
  • Page 94 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(6) Power Management Interface Signals Power Management Interface Signals (Continued) Name Type Description Name Type Description Power Button: The Power Button will cause SMI# or SCI to indicate Platform Reset: The ICH6 asserts PLTRST# to reset devices on the PWRBTN# PLTRST# a system request to go to a sleep state.
  • Page 95 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(7) Processor Interface Signals Processor Interface Signals (Continued) Name Type Description Name Type Description Mask A20: A20M# will go active based on either setting the Non-Maskable Interrupt: NMI is used to force a non-Maskable A20M# appropriate bit in the Port 92h register, or based on the A20GATE interrupt to the processor.
  • Page 96 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(8) General Purpose I/O Signals 1,2 General Purpose I/O Signals 1,2 (Continued) Name Type Tolerance Power Well Description Name Type Tolerance Power Well Description OD O V_CPU_IO `Core This signal is fixed as output only and can 3.3 V Core This signal is fixed as output only.
  • Page 97 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(9) AC ’97/Intel ® High Definition Audio Link Signals Power and Ground Signals Name Type Description Name Description AC ’97/Intel ® High Definition Audio Reset: Master hardware reset 3.3 V supply for core well I/O buffers (22 pins). This power may be shut off in S3, ACZ_RST# Vcc3_3 to external codec(s).
  • Page 98 50QMA N/B Maintenance 50QMA N/B Maintenance 5.2 Intel ICH6-M South Bridge(10) Functional Strap Definitions 1 Functional Strap Definitions 1 (Continued) Signal Usage When Sampled Description Signal Usage When Sampled Description GNT[6]#/ Top-Block Swap Rising Edge of The signal has a weak internal pull-up. If the EE_DOUT Reserved This signal has a weak internal pull-up.

  • Page 99: System Block Diagram

    50QMA N/B Maintenance 50QMA N/B Maintenance 6. System Block Diagram U711 THRMDA/THRMDC Clock Generator Intel CPU ICS954226 Dothan MXM_Connector Flat Panel LVDS Signal U710 DVI Connector RGB Signal North Bridge 915PM TV Connector TV Signal 200 Pins DDR2 SO-DIMM Socket * 2 MINI PCI Slot PCI Bus Mic-in Connector...

  • Page 100: Maintenance Diagnostics

    50QMA N/B Maintenance 50QMA 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.

  • Page 101: Maintenance Diagnostics

    50QMA N/B Maintenance 50QMA N/B Maintenance Maintenance Diagnostics 7.2.1 Diagnostic Tool for Mini PCI Slot : P/N:411906900001 Description: PWA; PWA-MPDOG/MINI PCI DOGKILLER CARD Note: Order it from MIC/TSSC...

  • Page 102: Error Codes

    50QMA N/B Maintenance 50QMA N/B Maintenance 7.3 Error Codes-1 Following is a list of error codes in sequent display on the MINI PCI debug board. Code POST Routine Description Code POST Routine Description Some Type of Lone Reset Test Keyboard Turn off FAST A20 for Post Test Keyboard Controller Signal Power On Reset...
  • Page 103 50QMA N/B Maintenance 50QMA N/B Maintenance 7.3 Error Codes-2 Following is a list of error codes in sequent display on the MINI PCI debug board. Code POST Routine Description Code POST Routine Description Special Init of Keyboard Controller Configure the COMM and LPT ports Test if Keyboard Present Initialize the Floppies Test Keyboard Interrupt...

  • Page 104: Trouble Shooting

    50QMA N/B Maintenance 50QMA N/B Maintenance 8. Trouble Shooting 8.1 No Power(*1) 8.2 No Display(*2) 8.3 VGA Controller Test Error LCD No Display 8.4 External Monitor No Display 8.5 Memory Test Error 8.6 Keyboard (K/B) Touch-Pad (T/P) Test Error 8.7 Hard Drive Test Error 8.8 CD-ROM Drive Test Error 8.9 USB Port Test Error 8.10 Audio Test Error...
  • Page 105 50QMA N/B Maintenance 50QMA N/B Maintenance *1: No Power Definition Base on ACPI Spec. We define the no power as while we press the power button, the system can’t leave S5 status or none the PG signal send out from power supply. Judge condition: Check whether there are any voltage feedback control to turn off the power.

  • Page 106: No Power

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-1 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. Check following parts and signals: No Power Main Board Parts Signals Parts Signals Board-level...
  • Page 107 50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-2 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. Main Voltage Map AMPVDD PU501,PL502 JS501~ L503,U502 JS504 PR527 L504 PF501,PL506,PQ503 +5VS_P +5VS +5VS_HDD...
  • Page 108 50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-3 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. Main Voltage Map JS508~ PU507,PL514 JS510 +1.05VS_P +VCCP +VCC_GMCH +1.5VS_DPLLA PL514,PL515 +DVMAIN +1.5VS_DPLLB L519...
  • Page 109 50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-4 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. +PWR_VDDIN JO502 PD502 120Z/100M OPEN-SMT4 PQ501 ADINP SCS140P PD505 AQ4407 SCS140P PR501 PJ701 7A/24VDC...
  • Page 110 50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-5 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. Charge PQ503 AO4407 PL506 PL508 PL507 PF501 PD507 BEAD_120Z/100M 33µH 3.0µH TR/3216FF-3A SSA34 BATT...
  • Page 111 50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-6 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. Discharge +VDD3S +VDD3 SI2301DS BATT +DVMAIN PQ506 PC527 PC526 +VDD3 AO4407 1000P 0.01µ...
  • Page 112 50QMA N/B Maintenance 50QMA N/B Maintenance 8.1 No Power-7 When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up. Power Controller +VDD3 U726 +DVMAIN AHC1G08DCK +5VS_P +KBC_CPUCORE H8_PWRON H8_PWRON +3VS_P H8_RESET# LTC3728L +VDD3_AVREF...

  • Page 113: No Display

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.2 No Display-1 There is no display on both LCD and VGA monitor after power on although the LCD and monitor is known-good. No Display Monitor Replace monitor or LCD module or LCD. Board-level Troubleshooting Make sure that CPU module, DIMM memory are installed...
  • Page 114 50QMA N/B Maintenance 50QMA N/B Maintenance 8.2 No Display-2 ****** System Clock Check ****** +3VS +3VS +VDD3S 120Z/100M +3VS_CLK +3VS R206 R207 120Z/100M 2.2µ R103 R142 2.2µ R144 2.2K 2.2K 2N7002 To J714,J713 SMB_DATA SMBDATA DREFCLK R101 2N7002 SMB_CLK SMBCLK DREFCLK# R100 PCICLK_ICH...
  • Page 115 50QMA N/B Maintenance 50QMA N/B Maintenance 8.2 No Display-3 ****** Power Good & Reset Circuit Check ****** +3VS U715 CARD_GRST# +3VS JL22 Card Bus JP_NET10 PCI_PCIRST# PCIRST# R548 From PU5 CB712 VRMPWRGD ICH_VGATE U10C 74AHC08_V JL23 U10D U717 JP_NET10 LAN_PCIRST# 74AHC08_V LAN Controller JL25...

  • Page 116: Vga Controller Failure Lcd No Display

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.3 VGA Controller Test Error LCD No Display-1 There is no display or picture abnormal on LCD although power-on-self-test is passed. VGA Controller Failure LCD No Display Check if 1. Confirm LCD panel or monitor is good J1, J2 are cold Re-soldering.
  • Page 117 50QMA N/B Maintenance 50QMA N/B Maintenance 8.3 VGA Controller Test Error LCD No Display-2 There is no display or picture abnormal on LCD although power-on-self-test is passed. AO4419 120Z/100M +3VS LVDS_ENVDD 1µ 0.22µ From J723 2N7002 J723 MXM_Connector IGP_LVDS_CLK LVDS_CLK U710 IGP_LVDS_CLK# LVDS_CLK#...

  • Page 118: External Monitor No Display

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.4 External Monitor No Display-1 There is no display or picture abnormal on CRT monitor, but it is OK for LCD. External Monitor No Display 1. Confirm monitor is good and check Check if the cable are connected properly.
  • Page 119 50QMA N/B Maintenance 50QMA N/B Maintenance 8.4 External Monitor No Display-2 There is no display or picture abnormal on CRT monitor, but it is OK for LCD. +DVMAIN J723 MXM_Connector 120Z/100M J702 +3VS L568 R216 130Z/100M IGP_CRT_DDDA DVI_DDDA CON_DDDA L569 R219 130Z/100M CON_DDCK...

  • Page 120: Memory Test Error

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.5 Memory Test Error-1 Extend DDRAM is failure or system hangs up. Memory Test Error 1. Check if on board SDRAM chips are no cold One of the following components or signals on the motherboard solder.
  • Page 121 50QMA N/B Maintenance 50QMA N/B Maintenance 8.5 Memory Test Error-2 Extend DDRAM is failure or system hangs up. +0.9VS R243,R263…. J713 SA_BS#[0..2], SA_CAS#, SA_RAS#, SA_WE# S[A..B]_BS#[0..2], S[A..B]_CAS#, S[A..B]_RAS#, S[A..B]_WE# SA_MA[0..13], CKE#[0..1], CS#[0..1], ODT[0..1] S[A..B]_A[0..13], CKE#[0..3], CS#[0..3], ODT[0..3] SA_DQS#[0..7], SA_DQS[0..7] S[A..B]_DQS#[0..7], S[A..B]_DQS[0..7] SA_DM[0..7], SA_DQ[0..63] S[A..B]_DM[0..7], S[A..B]_DQ[0..63] NB_CLK_DDR[0,1], NB_CLK_DDR[0,1]#...

  • Page 122: Keyboard (K/B) Touch-Pad (T/P) Test Error

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.6 Keyboard (K/B) Touch-Pad (T/P) Test Error-1 Error message of keyboard or touch-pad failure is shown or any key does not work. Keyboard or Touch-Pad Test Error Check J4, J5 Re-soldering. Board-level for cold solder? Troubleshooting Is K/B or T/P cable connected to notebook...
  • Page 123 50QMA N/B Maintenance 50QMA N/B Maintenance 8.6 Keyboard (K/B) Touch-Pad (T/P) Test Error-2 Error message of keyboard or touch-pad failure is shown or any key does not work. +3VS +KBC_CPUCORE Internal R146 +VDD3 Keyboard Connector 55~62 17~24 +3VS KI[0..7] 39~54 1~16 KO[0..15] R704...

  • Page 124: Hard Drive Test Error

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.7 Hard Disk Drive Test Error-1 Either an error message is shown, or the drive motor spins non-stop, while reading data from or writing data to hard disk. Hard Disk Drive Test Error 1. Check if BIOS setup is OK?. Board-level 2.
  • Page 125 50QMA N/B Maintenance 50QMA N/B Maintenance 8.7 Hard Disk Drive Test Error-2 Either an error message is shown, or the drive motor spins non-stop, while reading data from or writing data to hard disk. J715 +5VS_HDD +5VS 120Z/100MHZ C309 C303 C294 0.1µ...

  • Page 126: Cd-Rom Drive Test Error

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.8 CD-ROM Drive Test Error-1 An error message is shown when reading data from CD-ROM drive. CD-ROM Driver Test Error Board-level 1. Try another known good compact disk. Troubleshooting 2. Check install for correctly. 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 127 50QMA N/B Maintenance 50QMA N/B Maintenance 8.8 CD-ROM Drive Test Error-2 An error message is shown when reading data from CD-ROM drive. J710 R441 R414 CL-190G CD_LED# +5VS +5VS_CDROM 38~42 +5VS 120Z/100MHZ C208 C209 C198 0.1µ 0.1µ 10µ SD_D[0..15] 6~21 SD_D[0..15] +3VS +3VS...

  • Page 128: Usb Port Test Error

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.9 USB Test Error-1 An error occurs when a USB I/O device is installed. USB Test Error Check if the USB device is installed properly. Check the following parts for cold solder or one of the following Board-level Troubleshooting parts on the mother-board may be defective, use an oscilloscope...
  • Page 129 50QMA N/B Maintenance 50QMA N/B Maintenance 8.9 USB Test Error-2 An error occurs when a USB I/O device is installed. U501 L502 RT9701-CB 120Z/100M VOUT0,1 R791 C503 SW_VDD3 R502 0.1µ From U13 C504 USB_OC0# 150µ F503 J701 C172 C505 R503 1.1A 1µ...

  • Page 130: Audio Failure

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.10 Audio Test Error-1 No sound from speaker after audio driver is installed. Audio Failure 1. Check if speaker cables are connected properly. 2. Make sure all the drivers are Board-level Check the following parts for cold solder or one of the following parts on the installed properly.
  • Page 131 50QMA N/B Maintenance 50QMA N/B Maintenance 8.10 Audio Test Error-2 (Audio In) No sound from speaker after audio driver is installed. MIC1 R405 BEAD_600Z/100M MIC_VREF +3VS DVDD1,2 L520 C578 C581 C741 BEAD_600Z/100M R412 C751 JO517 R784 10µ 0.1µ 0.1µ 1µ 5.6K 4.7K J720...
  • Page 132 50QMA N/B Maintenance 50QMA N/B Maintenance 8.10 Audio Test Error-3 (Audio Out) No sound from speaker after audio driver is installed. +5VS +AMPVDD 120Z/100M BEAD_600Z/100M ROUT+ Internal Speaker 7,18 PVDD0/PVDD1 BEAD_600Z/100M Connector ROUT- C342 C734 C735 100µ 0.1µ 0.1µ BEAD_600Z/100M LOUT+ Internal Speaker BEAD_600Z/100M...

  • Page 133: Lan Test Error

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.11 LAN Test Error-1 An error occurs when a LAN device is installed. LAN Test Error Check the following parts for cold solder or one of the following 1.Check if the driver is installed properly. parts on the mother-board may be defective, use an oscilloscope 2.Check if the notebook connect with the to check the following signal or replace the parts one at a time and...
  • Page 134 50QMA N/B Maintenance 50QMA N/B Maintenance 8.11 LAN Test Error-2 An error occurs when a LAN device is installed. R696 3.6K EECS U511 +AVDDL EECK C660 1µ EEDI +AVDDH 93C46 EEDO +DVDD J506 L512 90Z/100M PMDI0+ 33… MDI0+ PJTX0+ PCI_AD[0..31] R508 PCI_AD20 PMDI0-...

  • Page 135: Pc Card Socket Failure

    50QMA N/B Maintenance 50QMA N/B Maintenance 8.12 PC Card Socket Test Error-1 An error occurs when a PC card device is installed. PC Card Socket Failure 1. Check if the PC Card device is installed Board-level properly. Troubleshooting 2. Confirm PC Card driver is installed ok. 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...
  • Page 136 50QMA N/B Maintenance 50QMA N/B Maintenance 8.12 PC Card Socket Test Error-2 An error occurs when a PC card device is installed. +3VS +5VS R625 +3VS VCC[1..10] SHDN VCCA1/2 CARD_VCC 5VA,B 3.3VA,B C628 R604 0.1µ VCC5_EN# +CARD_VCC +VPPOUT VCCD0 U509 VCC3_EN# VCCD1 11-13...

  • Page 137: Reference Material

    Reference Material Intel Pentium-M Processor Intel, INC Intel 915PM North Bridge Data Sheet Intel, INC Intel ICH6 South Bridge Data Sheet Intel, INC System Explode View Technology.Corp./MiTAC 8050QMA Hardware Engineering Specification Technology.Corp./MiTAC...
  • Page 138 SERVICE MANUAL FOR 8050QMA Sponsoring Editor : Jesse Jan Author : ZX.Xiao 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 : Jun.

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