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mitac 8965


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SERVICE MANUAL FOR

                     8965




                    BY: Sinty Zhang
      Repair Technology Research Department /EDVD
                     Apr.2005 / R01
                                              8965 N/B Maintenance

Contents

1. Hardware Engineering Specification .................................................................................                           4

  1.1 Introduction ................................................................................................................................ 4
  1.2 System Hardware Parts .................................................................................................................. 6



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  1.3 Other Functions ........................................................................................................................... 22
  1.4 Power Management ...................................................................................................................... 27

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  1.5 Appendix 1 : VIA VT8235CE GPI/O Pins Definitions ............................................................................. 30


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  1.6 Appendix 2 : W83L950D KBC Pins Definitions .................................................................................... 32

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2. System View and Disassembly .........................................................................................                          34



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  2.1 System View ............................................................................................................................... 34
  2.2 Tools Introduction ........................................................................................................................ 37

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  2.3 System Disassembly ...................................................................................................................... 38


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3. Definition & Location of Connectors / Switches ....................................................................

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                                                                                                                                                  58

  3.1 Mother Board .............................................................................................................................. 58


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  3.2 Modem Board .............................................................................................................................. 61

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4. Definition & Location of Major Components .......................................................................                              62

  4.1 Mother Board .............................................................................................................................. 62

5. Pin Description of Major Components ...............................................................................                            64

  5.1 Intel Pentium M Processor CPU ...................................................................................................... 64

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                                               8965 N/B Maintenance

Contents

   5.2 PN800 North Bridge ..................................................................................................................... 68
   5.3 VT8235CE South Bridge ................................................................................................................ 79

6. System Block Diagram ..................................................................................................                         89



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7. Maintenance Diagnostics ...............................................................................................                         90




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   7.1 Introduction ............................................................................................................................... 90
   7.2 Error Codes ............................................................................................................................... 91
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   7.3 Debug Tool ................................................................................................................................. 93



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8. Trouble Shooting .........................................................................................................                      94


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   8.1 No Power ................................................................................................................................... 96


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   8.2 Battery Can not Be Charged ........................................................................................................... 99
   8.3 No Display ................................................................................................................................. 101


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   8.4 LCD No Display or Picture Abnormal ............................................................................................... 104


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   8.5 External Monitor No Display or Color Abnormal ................................................................................. 107
   8.6 Memory Test Error ...................................................................................................................... 109
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   8.7 Keyboard (K/B) Touch-Pad (T/P) Test Error ...................................................................................... 111
   8.8 Hard Disk Drive Test Error ............................................................................................................ 113
   8.9 USB Port Test Error ..................................................................................................................... 115
   8.10 Mini-PCI Socket Test Error ......................................................................................................... 118
   8.11 Audio Test Error ........................................................................................................................ 120
   8.12 LAN Test Error .......................................................................................................................... 123
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                                         8965 N/B Maintenance

Contents

9. Spare Parts List ...........................................................................................................   125

10. System Exploded Views ................................................................................................        138




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11. Circuit Diagram .........................................................................................................     140



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12. Reference Material .....................................................................................................

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                                                                                                                                  172



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                                   8965 N/B Maintenance

1. Hardware Engineering Specification
 1.1 Introduction
  1.1.1 General Description


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    This document describes the brief introduction for MITAC 8965 portable notebook computer system.


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  1.1.2 System Overview
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    The MITAC 8965 model is designed for Intel Banias processor with 400MHz FSB with Micro-FCPGA package. It


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    can support Banias 1.5G ~ 1.9GHz.


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    This system is based on PCI architecture and is fully compatible with IBM PC/AT specification, which has standard


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    hardware peripheral interface. The power management complies with Advanced Configuration and Power Interface


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    (ACPI) 2.0. It also provides easy configuration through CMOS setup, which is built in system BIOS software and can
    be pop-up by pressing F2 key at system start up or warm reset. System also provides icon LEDs to display system


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    status, such as Wireless Lan indicator, Power indicator, Battery status indicator, HDD, Num Lock, Caps Lock, Scroll

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    Lock. It also equipped with LAN, 4 USB ports, and audio line out, external microphone function.

    The memory subsystem supports two expansion DDR SDRAM slot with unbuffered PC3200 DDR400 SDRAM.

    The VIA PN800 Mobile North Bridge integrates a high performance CPU interface for Intel Pentium 4 / Pentium-M
    processor, a full featured AGP port controller, integrated Graphics with 2D/ 3D/ Video Controllers, a advanced high-
    performance DDR400 SDRAM controller, and high bandwidth Ultra V-Link host controller connecting with VIA
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                                8965 N/B Maintenance

VT8235CE South Bridge.

The VIA VT8235CE integrates 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, and Inter-
operable with VIA Host-to-V-Link Host Controller.

The VIA VT6103L is a Fast Ethernet 10 / 100 1-port PHY / Transceiver with MII interface, and meet all applicable

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IEEE 802.3, 10Base-T and 100Base-Tx standards.

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The W83L950D is a high performance microcontroller on-chip supporting functions optimized for embedded control.

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These include ROM, RAM, four types of timers, a serial communication interface, optional I



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