4-6
Compaq Professional Workstation AP550 Maintenance and Service Guide
Table 4-1
POST Error Messages
continued
Error Code
Audible Beeps
L=Long S=Short Probable Source of Problem Recommended Action
605-Diskette Drive
Type Error
2S Mismatch in drive type.
Run Computer Setup or
Windows NT utilities.
912-The computer
cover has been
removed since last
system startup
The machine cover has been
removed. Please ensure that any
system access was authorized.
This error is strictly
informational and will be reset
upon the next cold boot.
1611-Fan failure
detected.
Chassis fan not connected to the
system board.
Reattach chassis fan to the
system board.
1720-SMART Hard
Drive detects
imminent failure.
IDE hard drive(s). Contact your Compaq
authorized service provider.
1721-SMART SCSI
Hard Drive Detects
Imminent Failure
SCSI hard drive(s) Contact your Compaq
authorized service provider
1771-Primary Disk
Port Address
Assignment Conflict
IDE configuration Run Computer Setup
1772-Secondary
Disk Port Address
Assignment Conflict
IDE configuration Run Computer Setup
1780-Disk 0 Failure IDE hard drive failure Contact your Compaq
authorized service provider
1781-Disk 1 Failure IDE hard drive failure Contact your Compaq
authorized service provider
1782-Disk Controller
Failure
IDE circuitry failure Contact your Compaq
authorized service provider
continued
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