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Keyboard Failure,

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Keyboard Failure 0 If the Keyboard fails, perform the following, one at a time. Do not replace a non-defective FRU: Figure 4-4. Keyboard Failure 4-8 Troubleshooting

Section	Page
TravelMate P653M/P653MG/P653V Service Guide	1
Table of Contents	5
CHAPTER 1 Hardware Specifications	11
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	19
Optional Items	21
Warranty	21
Dimensions and Weight	21
Environment	21
Notebook Tour	22
Open Front View	22
Close Front View	24
Left View	25
Right View	26
Base View	27
Indicators	28
Touchpad Basics	29
Keyboard	30
Hotkeys	33
Special Keys	34
Specification Tables	37
CHAPTER 2 System Utilities	55
System Utilities	57
BIOS Setup Utility	57
Navigating the BIOS Utility	57
WinFlash Utility	67
Removing the HDD Password	68
Removing the BIOS Passwords	69
Clearing the BIOS Passwords	70
LAN EEPROM Utility	71
CHAPTER 3 Machine Maintenance	73
Machine Maintenance	77
Machine Disassembly and Replacement	77
Recommended Equipment	77
Replacement Requirements	77
Pre-disassembly Instructions	78
Disassembly Process	79
External Module Disassembly Process	80
External Modules Disassembly Flowchart	80
Removing the Battery Pack	81
Remove the Dummy Card	82
Removing the ODD Module	83
Removing the Base Door	85
Removing the HDD Module	87
Removing the WLAN Module	89
Removing the Memory Modules	91
Main Unit Disassembly Process	92
Main Unit Disassembly Flowchart	92
Removing the Keyboard	93
Removing the Palmrest Module/Upper Cover	96
Removing the Power Button Launch Board	99
Removing the Smart Card Reader	101
Removing the Fingerprint Board	103
Removing the Touchpad Board	105
Removing the USB Board	107
Removing the TPM Board	109
Removing the RTC Battery	110
Removing the Mainboard	111
Removing the Thermal Module	116
Removing the CPU	118
Removing the Speakers	119
Removing the LAN Cable	120
Removing the LCD Module	121
LCD Module Disassembly Process	125
LCD Module Disassembly Flowchart	125
Removing the LCD Bezel	126
Removing the LCD Hinges	128
Removing the LCD Panel	129
Removing the Microphone	131
Removing the Camera Board	132
Removing the Antennas	134
LCD Module Reassembly Process	135
Replacing the Antennas	135
Replacing the Camera Board	136
Replacing the Microphone	137
Replacing the LCD Panel	138
Replacing the LCD Hinges	140
Replacing the LCD Bezel	141
Main Unit Reassembly Process	143
Replacing the LCD Module	143
Replacing the LAN Cable	146
Replacing the Speakers	147
Replacing the CPU	148
Replacing the Thermal Module	150
Replacing the RTC Battery	152
Replacing the DC Input Cable	153
Replacing the Mainboard	154
Replacing the USB Board	159
Replacing the TPM Board	161
Replacing the Fingerprint Board	162
Replacing the Touchpad Board	163
Replacing the Smart Card Reader	165
Replacing the Power Button Launch Board	167
Replacing the Palmrest Module/Upper Cover	169
Replacing the Keyboard	172
External Module Reassembly Process	174
Replacing the WLAN Module	174
Replacing the Memory Modules	176
Replacing the HDD Module	177
Replacing the Base Door	179
Replacing the ODD Module	180
Replacing the Dummy Card	183
Replacing the Battery Pack	184
CHAPTER 4 Troubleshooting	185
Troubleshooting	187
Introduction	187
General Information	187
Power On Issues	188
No Display Issues	189
LCD Failure	191
Keyboard Failure	192
Touchpad Failure	193
Internal Speaker Failure	194
Microphone Failure	196
USB Failure	197
WLAN Failure	198
Bluetooth Failure	199
Card Reader Failure	200
Thermal Unit Failure	201
Other Functions Failure	202
Intermittent Problems	203
Undetermined Problems	203
Error Codes	204
POST Codes	210
Component Codes	210
Progress Codes	214
CHAPTER 5 Jumper and Connector Locations	215
Jumper and Connector Locations	217
Mainboard Layout	217
Clearing Password Check and BIOS Recovery	221
Clearing the BIOS Passwords	221
Performing a BIOS Recovery	222
CHAPTER 6 FRU List	225
FRU (Field Replaceable Unit) List	227
TravelMate P653V/P653M/P653MG Exploded Diagrams	228
Main Assembly	228
LCD Assembly	229
FRU List	231
CHAPTER 7 Test Compatible Components	239
Test Compatible Components	241
Microsoft Windows 7 Environment Test	242
CHAPTER 8 Online Support Information	249
Online Support Information	251

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