HP Z440 Workstation Series Service Manual

Screen message Probable cause Recommended action
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 Processor 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.
525—Front chassis fan(2) not
detected
Front chassis fan(2) missing,
disconnected, or defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
526—CPU Liquid Cooling pump
not detected
Liquid cooling pump on CPU1 is not
detected.
1. Reseat the pump cable.
2. Replace the pump.
527—CPU Liquid Cooling pump
(2) not detected
Liquid cooling pump on CPU2 is not
detected.
1. Reseat the pump cable.
2. Replace the pump.
529—Unsupported WiFi
Device(s) Detected
An unsupported WiFi device has been
installed into an internal slot.
Remove the unsupported device.
917—Front Audio Not
Connected
Front Audio mechanism is missing or is
not connected.
1. Replace or reconnect the missing front audio
mechanism to the system board.
2. Reseat or replace the missing mechanism cable.
918—Front USB Not Connected Front USB mechanism is missing or is 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 Connected Front USB mechanism is missing or is not
connected.
1. Replace or reconnect the missing Front USB
mechanism to the system board.
96 Chapter 4 Diagnostics and troubleshooting

HP Z440 Workstation Series Specifications

General

Chipset	Intel C612
Memory Slots	8 DIMM slots
Audio	Integrated Realtek HD ALC221 Audio
Processor Options	Intel Xeon E5-1600 v3 series; Intel Xeon E5-2600 v3 series
Memory	Up to 128 GB DDR4-2133 ECC
Graphics Options	NVIDIA Quadro or AMD FirePro professional graphics cards
Power Supply	700W 90% efficient, wide-ranging, active Power Factor Correction (PFC)
Operating System	Windows 10 Pro, Windows 7 Professional, or Linux
Weight	11 kg
Network	Integrated Intel I218LM PCIe GbE
Expansion Slots	1 PCIe Gen2 x1, 1 PCI