HP Z240 Maintenance And Service Manual page 89

Control panel message
800-Keyboard Error
801-Keyboard or System Unit Error
900-CPU Fan Not Detected
901-Chassis, Rear Chassis, or Front Chassis Fan
not Detected
903-Computer Cover Has Been Removed Since
Last System Startup
904-SATA Cabling Error
90B-Fan Failure
90D-System Temperature
90E-Power Supply Fan Not detected
910–Filter Warning
Description
Keyboard failure.
Keyboard failure.
CPU fan is not connected or may have
malfunctioned.
Chassis, rear chassis, or front chassis fan is not
connected or may 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.
Airflow filter is dirty.
POST error messages and diagnostic front panel LEDs and audible codes
Recommended action
1. Reconnect keyboard with computer
turned off.
2. Check connector for bent or missing pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
1. Reconnect the keyboard with computer
turned off.
2. Ensure that none of the keys are
depressed.
3. Replace the keyboard.
4. Replace the system board.
1. Reseat CPU fan.
2. Reseat fan cable.
3. Replace CPU fan.
1. Reseat chassis, rear chassis, or front
chassis fan.
2. Reseat fan cable.
3. Replace chassis, rear chassis, or front
chassis fan.
N/A
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.
Replace the airflow filter.
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