Contents
Preventive Maintenance Procedures ...........................................................................................................
55
Troubleshooting Tips....................................................................................................................................
General Troubleshooting Sequence ........................................................................................................
56
The System Will Not Power Up ...............................................................................................................
57
The System Will Not Boot ........................................................................................................................
Intermittent Failures .................................................................................................................................
Clearing the System Configuration ..............................................................................................................
Password Problems .....................................................................................................................................
59
BIOS Recovery.............................................................................................................................................
60
Troubleshooting Checklist............................................................................................................................
61
General System Problems ...........................................................................................................................
62
Memory Problems ........................................................................................................................................
64
CD-ROM Problems ......................................................................................................................................
65
Flexible Disk Drive Problems .......................................................................................................................
66
Keyboard and Mouse Problems...................................................................................................................
67
Network Interface Card Problems................................................................................................................
Power Problems...........................................................................................................................................
68
SCSI Subsystem Problems..........................................................................................................................
69
Video/Monitor Problems...............................................................................................................................
73
Configuration Problems................................................................................................................................
75
Verifying Hard Disk Drive Operation ............................................................................................................
76
Processor Problems.....................................................................................................................................
77
Printer/DataComm Problems .......................................................................................................................
78
79
Safety Information ........................................................................................................................................
Service Tools Required................................................................................................................................
Replacing Power Supply Module(s).............................................................................................................
Replacing the Control Panel ........................................................................................................................
80
Replacing the HP NetRAID DIMM ...............................................................................................................
81
Replacing the System Battery......................................................................................................................
82
Replacing the NetRAID Battery Backup Module (Optional).........................................................................
84
Replacing System Memory ..........................................................................................................................
85
Replacing a Processor .................................................................................................................................
88
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