20 Front Chassis Assembly.........................................................................................................53
Removing the Front Chassis Assembly...................................................................................................................53
Installing the Front-Chassis Assembly...................................................................................................................54
21 Processor and Heat Sink.......................................................................................................55
Removing the Processors and Heat Sink...............................................................................................................55
Installing the Processors and Heat Sink.................................................................................................................57
22 Memory.....................................................................................................................................59
Removing the Memory............................................................................................................................................59
Installing the Memory.............................................................................................................................................60
23 System Board...........................................................................................................................63
Removing the System Board...................................................................................................................................63
Installing the System Board....................................................................................................................................64
24 System Setup...........................................................................................................................67
Boot Menu..............................................................................................................................................................67
Timing Key Sequences...........................................................................................................................................68
Dell Diagnostics......................................................................................................................................................68
System Setup Options.............................................................................................................................................68
25 Troubleshooting.......................................................................................................................75
Diagnostic LEDs......................................................................................................................................................75
Beep Codes.............................................................................................................................................................81
Error Messages......................................................................................................................................................84
Address mark not found...................................................................................................................................84
Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help in resolving
this problem, please note this checkpoint and contact Dell Technical Support.............................................84
Alert! Security override Jumper is installed....................................................................................................84
Attachment failed to respond...........................................................................................................................84
Bad command or file name .............................................................................................................................84
Bad error-correction code (ECC) on disk read.................................................................................................84
Controller has failed.........................................................................................................................................84
Data error ........................................................................................................................................................84
Decreasing available memory .........................................................................................................................85
Diskette drive 0 seek failure.............................................................................................................................85
Diskette read failure.........................................................................................................................................85
Diskette subsystem reset failed.......................................................................................................................85
Gate A20 failure................................................................................................................................................85
General failure .................................................................................................................................................85
