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Contents 7
Control Panel Assembly (Service-only
Procedure)
. . . . . . . . . . . . . . . . . . . . . . . . 113
Removing the Control Panel Assembly
. . . . . . 113
Installing the Control Panel Assembly
. . . . . . . 115
Power Distribution Board
. . . . . . . . . . . . . . . . 116
Removing the Power Distribution Board
. . . . . . 116
Replacing the Power Distribution Board
. . . . . 118
System Board (Service-Only Procedure)
. . . . . . . . 118
Removing the System Board Assembly
. . . . . . 119
Installing the System Board Assembly
. . . . . . . 121
4 Troubleshooting Your System . . . . . . . . 123
Safety First—For You and Your System . . . . . . . . . 123
Start-Up Routine
. . . . . . . . . . . . . . . . . . . . . 123
Checking the Equipment
. . . . . . . . . . . . . . . . 124
Troubleshooting External Connections
. . . . . . 124
Troubleshooting the Video Subsystem
. . . . . . . 124
Troubleshooting the Keyboard
. . . . . . . . . . . 125
Troubleshooting the Mouse
. . . . . . . . . . . . 126
Troubleshooting Serial I/O Problems
. . . . . . . . . . 126
Troubleshooting a Serial I/O Device
. . . . . . . . 127
Troubleshooting a USB Device
. . . . . . . . . . 127
Troubleshooting a NIC
. . . . . . . . . . . . . . . . . . 129
Troubleshooting a Wet System
. . . . . . . . . . . . . 130
Troubleshooting a Damaged System
. . . . . . . . . . 131
Troubleshooting the System Battery . . . . . . . . . . 132