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Contents 7
Removing the Control Panel Assembly. . . . . . . 91
Installing the Control Panel Assembly . . . . . . . 93
System Board . . . . . . . . . . . . . . . . . . . . . . 93
Removing the System Board
. . . . . . . . . . . . 93
Installing the System Board . . . . . . . . . . . . 95
4 Troubleshooting Your System . . . . . . . . . 97
Safety First—For You and Your System . . . . . . . . . 97
Troubleshooting System Startup Failure
. . . . . . . . 97
Troubleshooting External Connections
. . . . . . . . . 97
Troubleshooting the Video Subsystem . . . . . . . . . 98
Troubleshooting a USB Device
. . . . . . . . . . . . . 98
Troubleshooting a Serial I/O Device
. . . . . . . . . . 99
Troubleshooting a NIC
. . . . . . . . . . . . . . . . . . 99
Troubleshooting a Wet System . . . . . . . . . . . . . 100
Troubleshooting a Damaged System
. . . . . . . . . . 101
Troubleshooting the System Battery
. . . . . . . . . . . 102
Troubleshooting Power Supply . . . . . . . . . . . . . 103
Troubleshooting System Cooling Problems
. . . . . . . 103
Troubleshooting a Fan
. . . . . . . . . . . . . . . . . . 103
Troubleshooting System Memory
. . . . . . . . . . . . 104
Troubleshooting an Internal USB Key
. . . . . . . . . . 106
Troubleshooting an Optical Drive
. . . . . . . . . . . . 107
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