HP Z Series Maintenance And Service Manual page 88

Table 7-1 POST numeric codes and text messages (continued)
Control panel message
500–BIOS Recovery
70x-Wireless Mode Not Supported
800-Keyboard Error
801-Keyboard or System Unit Error
900-CPU Fan Not Detected
901-Chassis, Rear Chassis, Front
Chassis, or PCIe blower Fan not
Detected
904-SATA Cabling Error
90B-Fan Failure
90D-System Temperature
90E-Power Supply Fan Not detected
80 Chapter 7 POST error messages
Description
A system BIOS recovery has occurred.
The system has detected a wireless
module installed in the system that is not
supported and has been disabled.
Keyboard failure.
Keyboard failure.
CPU fan is not connected or may have
malfunctioned.
Fan is not connected or might have
malfunctioned.
One or more SATA devices are
improperly attached. For optimal
performance, the SATA 0 and SATA 1
ports should be used for hard drives
before other ports.
The system has detected that a cooling
fan is not operating correctly.
Thermal shutdown occurred. The system
BIOS has detected your machine
was previously shut down to avoid
overheating. Overheating may occur
if the cooling vents are blocked or
the operating temperature exceeds the
system specifications. The machine
should return to normal operation once
the situation is resolved.
Power supply fan is not connected or
may have malfunctioned.
Recommended action
Not applicable.
Replace with a supported module.
1. Reconnect keyboard with computer
turned off.
2. Check connector for bent or
missing pins.
3. Be sure that none of the keys are
depressed.
4. Replace keyboard.
1. Reconnect the keyboard with
computer turned off.
2. Be sure that none of the keys are
depressed.
3. Replace the keyboard.
4. Replace the system board.
1. Reseat fan.
2. Reseat fan cable.
3. Replace fan.
1. Reseat fan.
2. Reseat fan cable.
3. Replace fan.
Ensure SATA connectors are used in
ascending order. For one device, use
SATA 0. For two devices, use SATA 0 and
SATA 1. For three devices, use SATA 0,
SATA 1, and SATA 2.
1. Reseat fan.
2. Reseat fan.cable.
3. Replace fan.
Make sure system has proper airflow.
1. Reseat power supply fan.
2. Reseat fan cable.
3. Replace power supply fan.