HP Z400 - Workstation Maintenance And Service Manual page 184

Table 6-10 POST error messages (continued)
Screen message
515—CPU Overtemp
occurred
516—Chipset fan not detected Chipset fan missing, disconnected, or
517—Low power CPU
heatsink(s) detected for high
power CPUs
518—Power supply wattage
insufficient for hardware
configuration
601—Diskette Controller Error Diskette controller circuitry or diskette
605—Diskette Drive Type
Error
610—External Storage Device
Failure
611—Primary Floppy Port
Address Assignment Conflict
912—Computer Cover Has
Been Removed Since Last
System Start Up
914— Hood Lock Coil is not
Connected
916—Power Button Not
Connected
917—Front Audio Not
Connected
918—Front USB Not
Connected
172 Chapter 6 Diagnostics and troubleshooting
Probable cause
Insufficient processor cooling or
processor defect.
defective.
Inadequate heatsink is installed.
Workstation configuration requires
more power than the power supply can
provide.
drive circuitry incorrect.
Mismatch in drive type.
External storage device is not
detected, is improperly connected, or
is defective.
The flexible disk drive is configured at
a previously assigned address.
N/A
Mechanism is missing or is not
connected.
Power button cable is disconnected
from the system board.
Front Audio mechanism is missing or
is not connected.
Front USB mechanism is missing or is
not connected.
Recommended action
1. If necessary, add a heatsink to the processor and
ensure proper operation.
2. Replace the processor.
1. Ensure that the fan is installed and connected
properly.
2. Replace the fan.
Replace the low power heatsink with a high power
heatsink.
1. Reduce the workstation power consumption.
2. Replace the power supply with a high output
power supply.
1. Run the Computer Setup (F10) utility.
2. Verify cabling and replace defective cables if
necessary.
3. Clear CMOS.
4. Replace the diskette drive.
5. Replace the system board.
1. Run the Computer Setup (F10) Utility.
2. Disconnect any other diskette controller devices
(tape drives).
3. Clear the CMOS.
1. Verify that the external device is present and
connected properly.
2. Replace the external device.
Select a new address for the flexible disk drive.
No action required.
1. Reconnect or replace the missing mechanism.
2. Reseat or replace the missing mechanism cable.
Reconnect the cable and restart.
1. Replace or reconnect the missing front audio
mechanism to the system board.
2. Reseat or replace the missing mechanism cable.
1. Replace or reconnect the missing Front USB
mechanism to the system board..
2. Reseat or replace the missing mechanism cable.
ENWW