Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Guidelines for trained service technicians . . . . . . . . . . . . . . . viii
Inspecting for unsafe conditions . . . . . . . . . . . . . . . . . viii
Guidelines for servicing electrical equipment . . . . . . . . . . . . .ix
Safety statements . . . . . . . . . . . . . . . . . . . . . . . .x
Chapter 1. Introduction . . . . . . . . . . . . . . . . . . . . . .1
Related documentation . . . . . . . . . . . . . . . . . . . . . .1
Notices and statements in this document . . . . . . . . . . . . . . . .2
Machine Types 7973 and 7974 features and specifications . . . . . . . . .3
Machine Types 7975 and 7976 features and specifications . . . . . . . . .4
Server controls, LEDs, and connectors . . . . . . . . . . . . . . . .6
Front view . . . . . . . . . . . . . . . . . . . . . . . . . .6
Rear view . . . . . . . . . . . . . . . . . . . . . . . . . .9
Internal connectors, LEDs, and switches . . . . . . . . . . . . . . .11
System-board internal connectors . . . . . . . . . . . . . . . . .11
System-board external connectors . . . . . . . . . . . . . . . . .12
System-board option connectors . . . . . . . . . . . . . . . . .13
System-board LEDs . . . . . . . . . . . . . . . . . . . . . .14
System-board switches . . . . . . . . . . . . . . . . . . . . .15
Chapter 2. Diagnostics . . . . . . . . . . . . . . . . . . . . .17
Diagnostic tools . . . . . . . . . . . . . . . . . . . . . . . .17
POST . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
POST beep codes . . . . . . . . . . . . . . . . . . . . . .18
No-beep symptoms . . . . . . . . . . . . . . . . . . . . . .21
Error logs . . . . . . . . . . . . . . . . . . . . . . . . . .22
Viewing error logs from the Configuration/Setup Utility program . . . . . .23
Viewing the BMC log from the diagnostic programs . . . . . . . . . .23
POST error codes . . . . . . . . . . . . . . . . . . . . . . .24
Checkout procedure . . . . . . . . . . . . . . . . . . . . . . .39
About the checkout procedure . . . . . . . . . . . . . . . . . .39
Performing the checkout procedure . . . . . . . . . . . . . . . .40
Checkpoint codes (trained service technicians only) . . . . . . . . . . .40
Troubleshooting tables . . . . . . . . . . . . . . . . . . . . . .41
CD or DVD drive problems . . . . . . . . . . . . . . . . . . .41
Diskette drive problems . . . . . . . . . . . . . . . . . . . . .42
General problems . . . . . . . . . . . . . . . . . . . . . . .43
Hard disk drive problems . . . . . . . . . . . . . . . . . . . .43
Intermittent problems . . . . . . . . . . . . . . . . . . . . . .44
Keyboard, mouse, or pointing-device problems . . . . . . . . . . . .44
Memory problems . . . . . . . . . . . . . . . . . . . . . . .46
Microprocessor problems . . . . . . . . . . . . . . . . . . . .47
Monitor or video problems . . . . . . . . . . . . . . . . . . . .47
Optional-device problems . . . . . . . . . . . . . . . . . . . .50
Power problems . . . . . . . . . . . . . . . . . . . . . . .51
Serial port problems . . . . . . . . . . . . . . . . . . . . . .52
ServerGuide problems . . . . . . . . . . . . . . . . . . . . .53
Software problems . . . . . . . . . . . . . . . . . . . . . .53
Universal Serial Bus (USB) port problems . . . . . . . . . . . . . .54
Error LEDs . . . . . . . . . . . . . . . . . . . . . . . . . .55
Power-supply LEDs . . . . . . . . . . . . . . . . . . . . . . .56
Diagnostic programs, messages, and error codes . . . . . . . . . . . .58
© Copyright IBM Corp. 2006 iii