Table 4-10POST error messages (continued)

Screen message

Probable cause

Recommended action

 

 

 

 

521—Memory fan (3) not

Memory fan(3) missing, disconnected,

1.

Reseat the fan cable.

detected

or defective.

2.

Reseat the fan.

 

 

 

 

3.

Replace the fan.

 

 

 

 

522—Memory fan (4) not

Memory fan(4) missing, disconnected,

1.

Reseat the fan cable.

detected

or defective.

2.

Reseat the fan.

 

 

 

 

3.

Replace the fan.

 

 

 

 

523—CPU fan (2) not

CPU fan(2) missing, disconnected, or

1.

Reseat the fan cable.

detected

defective.

2.

Reseat the fan.

 

 

 

 

3.

Replace the fan.

 

 

 

 

524—Rear chassis fan(2) not

Rear chassis fan(2) missing,

1.

Reseat the fan cable.

detected

disconnected, or defective.

2.

Reseat the fan.

 

 

 

 

3.

Replace the fan.

 

 

 

 

525—Front chassis fan(2) not

Front chassis fan(2) missing,

1.

Reseat the fan cable.

detected

disconnected, or defective.

2.

Reseat the fan.

 

 

 

 

3.

Replace the fan.

 

 

 

 

526—CPU Liquid Cooling

Liquid cooling pump on CPU1 is not

1.

Reseat the pump cable.

pump not detected

detected.

2.

Replace the pump.

 

 

 

 

 

 

527—CPU Liquid Cooling

Liquid cooling pump on CPU2 is not

1.

Reseat the pump cable.

pump (2) not detected

detected.

2.

Replace the pump.

 

 

 

 

 

 

528—CPU requires Liquid

Invalid system configuration.

1.

Remove incorrect processor and reinstall original

Cooling solution

 

 

processor.

 

 

2.

Remove incorrect cooling solution and reinstall

 

 

 

original liquid cooling solution.

 

 

 

529—Unsupported WiFi

An unsupported WiFi device has been

Remove the unsupported device.

Device(s) Detected

installed into an internal slot.

 

 

 

 

 

 

917—Front Audio Not

Front Audio mechanism is missing or is

1.

Replace or reconnect the missing front audio

Connected

not connected.

 

mechanism to the system board.

 

 

2.

Reseat or replace the missing mechanism cable.

918—Front USB Not

Front USB mechanism is missing or is

Connected

not connected.

1.Replace or reconnect the missing Front USB mechanism to the system board.

2.Reseat or replace the missing mechanism cable.

921—Front USB Not

Front USB mechanism is missing or is

Connected

not connected.

1.Replace or reconnect the missing Front USB mechanism to the system board.

2.Reseat or replace the missing mechanism cable.

156 Chapter 4 Diagnostics and troubleshooting

Page 168
Image 168
HP Z220 F1J90UAABA, Z420 D3J34UT#ABA, B2B94UT B2B94UT#ABA, B5P07UT B5P07UT#ABA Replace or reconnect the missing front audio