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Removing the Touchpad Board, Touchpad and Fingerprint Board Cables

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Removing the Touchpad Board 0 1. Perform the "Removing the Palmrest Module/Upper Cover" procedure described on page 3-25. 2. Open the connector latches for the touchpad and fingerprint board cables (1), and then disconnect the cables (2). Touchpad cable Fingerprint board cable Figure 1-44. Touchpad and Fingerprint Board Cables 3. Remove the screws securing the touchpad bracket. Figure 1-45. Touchpad Bracket Screws Table 3-13. Screw Step Touchpad Bracket Disassembly Screw M2 × L3 Quantity 3 Screw Type Machine Maintenance 3-33

Section	Page
TravelMate P643M/P643V/P643MG Service Guide	1
Contents	5
CHAPTER 1 Hardware Specifications	11
Contents	12
Hardware Specifications and Configurations	15
Features	15
Operating System	15
Platform	15
System Memory	15
Display	15
Graphics	16
Storage Subsystem	16
Audio Subsystem	17
Communication	17
Privacy Control	18
Power Adapter and Battery	18
Keyboard and Pointing Device	19
I/O Ports	19
Software and Tools	20
Optional Items	21
Warranty	21
Dimensions and Weight	21
Environment	21
Notebook Tour	22
Open Front View	22
Close Front View	23
Left View	24
Right View	25
Base View	26
Indicators	27
Touchpad Basics	28
Keyboard	29
Hotkeys	32
Special Keys	33
Specification Tables	36
CHAPTER 2 System Utilities	53
Contents	54
System Utilities	55
BIOS Setup Utility	55
Navigating the BIOS Utility	55
WinFlash Utility	65
Removing the HDD Password	66
Removing the BIOS Passwords	67
Clearing the BIOS Passwords	68
LAN EEPROM Utility	69
CHAPTER 3 Machine Maintenance	71
Contents	72
Machine Maintenance	75
Machine Disassembly and Replacement	75
Recommended Equipment	75
Replacement Requirements	75
Pre-disassembly Instructions	76
Disassembly Process	77
External Module Disassembly Process	78
External Modules Disassembly Flowchart	78
Removing the Battery Pack	79
Remove the Dummy Card	80
Removing the ODD Module	81
Removing the Base Door	84
Removing the HDD Module	85
Removing the Memory Modules	88
Removing the WLAN Module	89
Main Unit Disassembly Process	92
Main Unit Disassembly Flowchart	92
Removing the Keyboard	93
Removing the Palmrest Module/Upper Cover	95
Removing the Power Button Launch Board	99
Removing the Fingerprint Board	101
Removing the Touchpad Board	103
Removing the USB Board	105
Removing the TPM Module	106
Removing the Mainboard	107
Removing the Thermal Module	110
Removing the CPU	112
Removing the RTC Battery	113
Removing the Speaker Module	114
Removing the LCD Module	115
LCD Module Disassembly Process	118
LCD Module Disassembly Flowchart	118
Removing the LCD Bezel	119
Removing the Camera Board	121
Removing the Microphone	122
Removing the LCD Panel	123
Removing the LCD Hinges and Hinge Support Brackets	124
Removing the Microphone and Camera Cable	126
Removing the Antennas	127
LCD Module Reassembly Process	128
Replacing the Antennas	128
Replacing the Microphone and Camera Cable	129
Replacing the LCD Hinges and Hinge Support Brackets	130
Replacing the LCD Panel	132
Removing the Microphone	133
Replacing the Camera Board	134
Replacing the LCD Bezel	135
Main Unit Reassembly Process	137
Replacing the LCD Module	137
Replacing the Speaker Module	140
Replacing the CPU	141
Replacing the Thermal Module	142
Replacing the RTC Battery	144
Replacing the Mainboard	145
Replacing the TPM Module	148
Replacing the USB Board	149
Replacing the Fingerprint Board	150
Replacing the Touchpad Board	151
Replacing the Power Button Launch Board	153
Replacing the Palmrest Module/Upper Cover	155
Replacing the Keyboard	159
External Module Reassembly Process	161
Replacing the WLAN Module	161
Replacing the Memory Modules	164
Replacing the HDD Module	165
Replacing the Base Door	168
Replacing the ODD Module	169
Replacing the Dummy Card	172
Replacing the Battery Pack	173
CHAPTER 4 Troubleshooting	175
Contents	176
Troubleshooting	177
Introduction	177
General Information	177
Power On Issues	178
No Display Issues	179
LCD Failure	181
Keyboard Failure	182
Touchpad Failure	183
Internal Speaker Failure	184
Microphone Failure	186
USB Failure	187
WLAN Failure	188
Bluetooth Failure	189
Card Reader Failure	190
Thermal Unit Failure	191
Other Functions Failure	192
Intermittent Problems	193
Undetermined Problems	193
Error Codes	194
POST Codes	200
Component Codes	200
Progress Codes	204
CHAPTER 5 Jumper and Connector Locations	205
Contents	206
Jumper and Connector Locations	207
Mainboard Layout	207
Clearing Password Check and BIOS Recovery	211
Clearing the BIOS Passwords	211
Performing a BIOS Recovery	212
CHAPTER 6 FRU List	215
Contents	216
FRU (Field Replaceable Unit) List	217
Main Assembly	218
LCD Assembly	219
CHAPTER 7 Test Compatible Components	229
Contents	230
Test Compatible Components	231
Microsoft Windows 7 Environment Test	232
CHAPTER 8 Online Support Information	241
Online Support Information	243

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