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SATELLITE PRO A120
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4 Replacement Procedures
4-vi
[CONFIDENTIAL]
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Contents
Main
Toshiba Personal Computer TECRA A8 series / Satellite Pro A120 series Maintenance Manual
TOSHIBA CORPORATION
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Preface
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Table of Contents
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Chapter 1 Contents
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1.1 Features
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1.2 2.5-inch Hard Disk Drive
1.2 2.5-inch Hard Disk Drive 1 Hardware Overview
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 1-15
Table 1-1 2.5-inch HDD specifications (2/2)
1.3 Keyboard
1.4 Optical Drive
1 Hardware Overview 1.4 Optical Drive
1-18 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
1.4 Optical Drive 1 Hardware Overview
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 1-19
1 Hardware Overview 1.4 Optical Drive
1-20 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
1.5 TFT Color Display
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1.6 Power Supply
1.6 Power Supply 1 Hardware Overview
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 1-25
Table 1-8-1 Power supply output rating (Intel chipset model)
1 Hardware Overview 1.6 Power Supply
1-26 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 1-8-2 Power supply output rating (ATI chipset model) (1/2)
1.6 Power Supply 1 Hardware Overview
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 1-27
Table 1-8-2 Power supply output rating (ATI chipset model)(2/2)
1.7 Batteries
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1.8 AC Adapter
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Chapter 2 Contents
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2.1 Troubleshooting
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2.2 Troubleshooting Flowchart
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2.3 Power Supply Troubleshooting
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2.4 System Board Troubleshooting
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2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-25
[Intel chipset model] Table 2-4-1 Debug port (Boot mode) error status (1/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-26 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-1 Debug port (Boot mode) error status (2/9)
F100
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Table 2-4-1 Debug port (Boot mode) error status (3/9)
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-27
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-28 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-1 Debug port (Boot mode) error status (4/9)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-29
Table 2-4-1 Debug port (Boot mode) error status (5/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-30 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-1 Debug port (Boot mode) error status (6/9)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-31
Table 2-4-1 Debug port (Boot mode) error status (7/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-32 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-1 Debug port (Boot mode) error status (8/9)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-33
Table 2-4-1 Debug port (Boot mode) error status (9/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-34 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
[ATI chipset model] Table 2-4-2 Debug port (Boot mode) error status (1/9)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-35
Table 2-4-2 Debug port (Boot mode) error status (2/9)
F100
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
Table 2-4-2 Debug port (Boot mode) error status (3/9)
2-36 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-37
Table 2-4-2 Debug port (Boot mode) error status (4/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-38 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-2 Debug port (Boot mode) error status (5/9)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-39
Table 2-4-2 Debug port (Boot mode) error status (6/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-40 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-2 Debug port (Boot mode) error status (7/9)
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 2-41
Table 2-4-2 Debug port (Boot mode) error status (8/9)
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-42 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 2-4-2 Debug port (Boot mode) error status (9/9)
NOTE: Status outputted by the test means the last error detected in the debug port test.
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2.5 USB FDD Troubleshooting
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2.6 HDD Troubleshooting
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2.7 Keyboard and Touch pad Troubleshooting
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2.8 Display Troubleshooting
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2.9 Optical Drive Troubleshooting
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2.10 Modem Troubleshooting
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2.11 LAN Troubleshooting
2.12 Bluetooth Troubleshooting
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2.13 Wireless LAN Troubleshooting
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2.14 Sound Troubleshooting
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2.15 SD card Slot Troubleshooting
2.16 Fingerprint sensor Troubleshooting
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Chapter 3 Contents
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3.1 The Diagnostic Test
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3.2 Executing the Diagnostic Test
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3.3 Setting of the hardware configuration
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3.4 Heatrun Test
3 Tests and Diagnostics 3.5 Subtest Names
3-12 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
3.5 Subtest Names
3.5 Subtest Names 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-13
Table 3-1 Subtest names (2/2)
3.6 System Test
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3.7 Memory Test
3.8 Keyboard Test
3.9 Display Test
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3.10 Floppy Disk Test
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3.11 Printer Test
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3.12 Async Test
3.13 Hard Disk Test
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3.14 Real Timer Test
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3.15 NDP Test
3.16 Expansion Test
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3.17 CD-ROM/DVD-ROM Test
3.18 Error Code and Error Status Names 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-35
3.18 Error Code and Error Status Names
3 Tests and Diagnostics 3.18 Error Code and Error Status Names
3-36 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 3-2 Error codes and error status names (2/3)
3.18 Error Code and Error Status Names 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-37
Table 3-2 Error codes and error status names (3/3)
3.19 Hard Disk Test Detail Status
3.19 Hard Disk Test Detail Status 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-39
Table 3-4 Error register contents
3.20 ONLY ONE TEST
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3.21 Head Cleaning
3.22 Log Utilities
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3.23 Running Test
3.24 Floppy Disk Drive Utilities
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3.25 System Configuration
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3.26 Wireless LAN Test Program (Atheros)
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3.27 Wireless LAN Test Program (Intel-made b/g, a/b/g)
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3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program
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3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-75
If the target machine has any problem, it displays Error CODE. The following message is displayed.
Table 3-5 Error message
3 Tests and Diagnostics 3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program
3-76 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
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3 Tests and Diagnostics 3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program
3-78 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-79
3 Tests and Diagnostics 3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program
3-80 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program 3 Tests and Diagnostics
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] 3-81
Table 3-7 Error code for Bluetooth test (BD_ADDR of the DUT) (2/2)
3 Tests and Diagnostics 3.28 LAN/Modem/Bluetooth/IEEE1394 Test Program
3-82 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table 3-8 Common error code
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3.29 Sound Test program
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3.30 SETUP
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Chapter 4 Contents
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4.1 General
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4.2 Battery pack
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4.3 PC card
4.4 SD card
4.5 HDD
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4.6 MDC/Memory module
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4.7 Keyboard
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4.8 Optical drive
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4.9 Wireless LAN card
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4.10 Cover assembly
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4.12 Fingerprint sensor board
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4.13 Touch pad
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4.14 SD card slot
4.15 Bluetooth module
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4.16 Serial/S-Video board
4.17 RTC battery
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4.18 Modem jack
4.19 Fan
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4.20 System board
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4.21 Battery lock
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4.22 HDD cable
4.23 Heat sink/CPU
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4.24 PC card slot
4.25 LCD unit/FL inverter
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4.26 Cover latch
4.27 Display rear cover
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4.28 Wireless LAN antenna/Bluetooth antenna
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4.29 Hinge
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4.30 Speaker
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4.31 Fluorescent Lamp
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Appendix Contents
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Appendix A Handling the LCD Module
Precautions for handling the LCD module
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Appendices Appendix B Board Layout
Table B-2 System board (FHBIS*/FHBAS*) connectors
B-4 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
and ICs (back)
B.3 Fingerprint Sensor board (FHBIS*/FHBAS*) View
B.4 SD card board (FHBID*/FHBAD*) View
B.5 SV board (FHBIR*/FHBAR*) View
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Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-1
Appendix C Pin Assignments
[Intel Chipset model] System board (FHBIS) C.1 CN1400 SO-DIMM A connector (200-pin)
Table C-1 SO-DIMM A connector (200-pin) (1/3)
Appendices Appendix C Pin Assignments
C-2 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-1 SO-DIMM A connector (200-pin) (2/3)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-3
Table C-1 SO-DIMM A connector (200-pin) (3/3)
Appendices Appendix C Pin Assignments
C.2 CN1410 SO-DIMM B connector (200-pin)
Table C-2 SO-DIMM B connector (200-pin) (1/3)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-5
Table C-2 SO-DIMM B connector (200-pin) (2/3)
Appendices Appendix C Pin Assignments
C-6 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-2 SO-DIMM B connector (200-pin) (3/3)
C.3 CN1850 HDD interface connector (11-pin)
Appendices Appendix C Pin Assignments
C-8 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
C.4 CN1810 ODD interface connector (50-pin)
Table C-4 ODD interface connector (50-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-9
C.5 CN2300 Docking interface connector (240-pin)
Table C-5 Docking interface connector (240-pin) (1/4)
Appendices Appendix C Pin Assignments
C-10 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-5 Docking interface connector (240-pin) (2/4)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-11
Table C-5 Docking interface connector (240-pin) (3/4)
Appendices Appendix C Pin Assignments
C-12 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-5 Docking interface connector (240-pin) (4/4)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-13
C.6 CN2110 PC card interface connector (68-pin)
Table C-6 PC card interface connector (68-pin)
Appendices Appendix C Pin Assignments
C-14 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
C.7 CN2600 Wireless LAN card interface connector (52-pin)
Table C-7 Wireless LAN card interface connector (52-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-15
C.8 CN3010 MDC interface connector (12-pin)
Table C-8 MDC interface connector (12-pin)
C.9 CN3011 MDC relay connector (4-pin)
C.10 CN3200 Keyboard interface connector (34-pin)
Table C-10 Keyboard interface connector (34-pin)
C.11 CN3240 PAD interface connector (8-pin)
C.12 CN9721 SW membrane interface connector (13-pin)
Table C-12 SW membrane interface connector (13-pin)
C.14 J4100 LAN interface connector (12-pin)
C.15 CN4200 IEEE 1394 interface connector (4-pin)
Table C-15 IEEE 1394 interface connector (4-pin)
C.16 CN4400 Bluetooth interface connector (20-pin)
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Appendices Appendix C Pin Assignments
C-20 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
C.20 CN5000 LCD interface connector (40-pin)
Table C-20 LCD interface connector (40-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-21
C.21 CN5080 RGB connector (15-pin)
Table C-21 RGB connector (15-pin)
C.23 CN6170 Speaker connector (4-pin)
C.22 J6051 External microphone connector (6-pin)
C.24 J6310 Headphone connector (5-pin)
Table C-24 Headphone connector (5-pin)
C.25 CN8800 DC-IN connector (4-pin)
C.28 CN8771 FAN interface connector (4-pin)
Table C-28 FAN interface connector (4-pin)
C.29 CN9600 SV board (FHBIR*) interface connector (20-pin)
C.31 CN9720 SD card board (FHBID*) interface connector (20-pin)
Table C-31 SD card board (FHBID*) interface connector (20-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-25
SV Board (FHBIR*) C.32 CN9610 System board interface connector (20-pin)
Table C-32 System board interface connector (20-pin)
C.33 CN9611 S-Video connector (6-pin)
Table C-33 S-Video connector (6-pin)
C.34 CN5501 Serial interface connector (9-pin)
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Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-27
SD card Board (FHBID*)
C.36 CN9550 System board interface connector (20-pin)
Table C-36 System board interface connector (20-pin)
C.37 IS2101 SD card interface connector (12-pin)
Table C-37 SD card interface connector (12-pin)
Appendices Appendix C Pin Assignments
[ATI Chipset model] System board (FHBAS)
* The following connectors are different from ones of Intel chipset model.
C.38 CN1400 SO-DIMM 0 connector (200-pin)
Table C-38 SO-DIMM 0 connector (200-pin) (1/3)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-29
Table C-38 SO-DIMM 0 connector (200-pin) (2/3)
Appendices Appendix C Pin Assignments
C-30 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-38 SO-DIMM 0 connector (200-pin) (3/3)
Appendix C Pin Assignments Appendices
C.39 CN1410 SO-DIMM 1 connector (200-pin)
Table C-39 SO-DIMM 1 connector (200-pin) (1/3)
Appendices Appendix C Pin Assignments
C-32 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-39 SO-DIMM 1 connector (200-pin) (2/3)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-33
Table C-39 SO-DIMM 1 connector (200-pin) (3/3)
C.40 CN1850 HDD interface connector (11-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-35
C.41 CN1810 ODD interface connector (50-pin)
Table C-41 ODD interface connector (50-pin)
Appendices Appendix C Pin Assignments
C-36 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
C.42 CN3200 Docking interface connector (240-pin)
Table C-42 Docking interface connector (240-pin) (1/4)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-37
Table C-42 Docking interface connector (240-pin) (2/4)
Appendices Appendix C Pin Assignments
C-38 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table C-42 Docking interface connector (240-pin) (3/4)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-39
Table C-42 Docking interface connector (240-pin) (4/4)
Appendices Appendix C Pin Assignments
C.43 CN2600 Wireless LAN card interface connector (52-pin)
Table C-43 Wireless LAN card interface connector (52-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-41
C.44 CN3490 LPC debug port interface connector (12-pin)
Table C-44 LPC debug port interface connector (12-pin)
C.45 J4100 LAN interface connector (12-pin)
Table C-45 LAN interface connector (12-pin)
C.47 CN4611 USB 4 port connector (4-pin)
C.48 CN4612 USB 0 port connector (4-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-43
C.49 CN5000 LCD interface connector (40-pin)
Table C-49 LCD interface connector (40-pin)
Appendices Appendix C Pin Assignments
C-44 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
C.50 CN9600 SV board (FHBAR*) interface connector (20-pin)
Table C-50 SV board (FHBAR*) interface connector (20-pin)
C.51 CN9700 Fingerprint sensor board (FHBAS*) interface connector (6-pin)
Table C-51 Fingerprint sensor board (FHBAS*) interface connector (6-pin)
Appendix C Pin Assignments Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] C-45
Table C-52 SD card board (FHBAD*) interface connector (20-pin)
Appendices Appendix C Pin Assignments
C.53 CN9610 System board interface connector (20-pin)
Table C-53 System board interface connector (20-pin)
C.54 CN9611 S-Video connector (6-pin)
Table C-54 S-Video connector (6-pin)
C.55 CN5501 Serial interface connector (9-pin)
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Appendices Appendix C Pin Assignments
C-48 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
SD Card Board (FHBAD*)
C.57 CN9730 System board interface connector (20-pin)
Table C-57 System board interface connector (20-pin)
C.58 IS2101 SD card interface connector (12-pin)
Table C-58 SD card interface connector (12-pin)
Appendix D Keyboard Scan/Character Codes
Table D-1 Scan codes (set 1 and set 2) (1/4)
Appendices Appendix D Keyboard Scan/Character Codes
D-2 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table D-1 Scan codes (set 1 and set 2) (2/4)
Appendix D Keyboard Scan/Character Codes Appendices
TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573) [CONFIDENTIAL] D-3
Table D-1 Scan codes (set 1 and set 2) (3/4)
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Appendices Appendix D Keyboard Scan/Character Codes
D-6 [CONFIDENTIAL] TECRA A8 /Satellite Pro A120 Maintenance Manual (960-573)
Table D-3 Scan codes in Numlock mode
Table D-4 Scan codes with Fn key
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Appendix E Key Layout
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Appendix F Wiring diagrams
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Appendix G BIOS rewrite procedures
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Appendix H EC/KBC rewrite procedures
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Appendix I Reliability
