HP Z220 SFF, Z220 CMT, Z420, Z620, and Z820 Workstations Maintenance and Service Guide
Screen message Probable cause Recommended action
2. Reseat the fan.
3. Replace the fan.
512—Rear chassis fan not
detected
Fan missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
513—Front Chassis fan not
detected
Front fan missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
514—Power supply wattage
insufficient for hardware
configuration
Computer configuration requires more
power than the power supply can
provide
Reduce the computer power consumption.
515—Power supply fan not
detected
Power supply fan is disconnected or
defective.
1. Reseat the power supply cables.
2. Replace the power supply.
517—Memory fan not
detected
Memory fan missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
518—PCI fan not detected PCI fan missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
519—Hard drive fan not
detected
Hard drive fan missing, disconnected,
or defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
520—Memory fan (2) not
detected
Memory fan (2) missing,
disconnected, or defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
521—Memory fan (3) not
detected
Memory fan(3) missing,
disconnected, or defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
522—Memory fan (4) not
detected
Memory fan(4) missing,
disconnected, or defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
523—CPU fan (2) not
detected
CPU fan(2) missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
524—Rear chassis fan(2) not
detected
Rear chassis fan(2) missing,
disconnected, or defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
150 Chapter 4 Diagnostics and troubleshooting