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Preventive Maintenance Procedures ........................................................................................................... 55
Troubleshooting Tips.................................................................................................................................... 55
General Troubleshooting Sequence ........................................................................................................ 56
The System Will Not Power Up ............................................................................................................... 57
The System Will Not Boot ........................................................................................................................ 57
Intermittent Failures .................................................................................................................................57
Clearing the System Configuration ..............................................................................................................57
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................................................................................................................ 67
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
6..Replacing Parts ..........................................................................................................................................79
Safety Information ........................................................................................................................................ 79
Service Tools Required................................................................................................................................ 79
Replacing Power Supply Module(s)............................................................................................................. 79
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