HP Z1 G2 - Page 77

Screen message Probable cause Recommended action
2. Replace the processor.
516—MXM fan not detected MXM fan missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
517—Memory fan not detected Memory fan missing, disconnected, or
defective.
1. Reseat the fan cable.
2. Reseat the fan.
3. Replace the fan.
530—Left DMIC cable not
connected.
Left Dmic cable is not connected to the
system board or to the left Dmic.
1. Reseat the cable.
2. Replace the cable.
531—Right DMIC cable not
connected.
Right Dmic cable is not connected to
the system board or to the right Dmic.
1. Reseat the cable.
2. Replace the cable.
532—Side I/O board not
connected.
Side I/O board is missing or is not
connected.
1. Reseat the Side I/O board.
2. Replace the Side I/O board.
3. Replace the system board.
533—Rear I/O USB/Audio cable
not connected.
The Rear I/O USB/Audio cable between
the system board and Rear I/O board is
missing or not connected.
1. Reseat the cable.
2. Replace the cable.
534—Rear I/O DP/LAN cable not
connected.
The Rear I/O DP/LAN cable between the
system board and Rear I/O board is
missing or not connected.
1. Reseat the cable.
2. Replace the cable.
535—LED Backlight cable not
connected.
The LED backlight cable between the
system board and the LCD panel is
missing or not connected.
1. Reseat the cable.
2. Replace the cable.
536—LCD DP cable not
connected.
The LCD DP cable between the system
board and the LCD panel is missing or
not connected.
1. Reseat the cable.
2. Replace the cable.
539—Unable to read GPU
temperature. The graphics card
may overheat.
1. Power cycle the system.
2. If the problem persists, contact HP support.
550—Thunderbolt power cable
not connected.
The Thunderbolt power cable is
missing or not connected.
1. Reseat the cable.
2. Replace the cable.
551—Thunderbolt DP cable not
connected.
The Thunderbolt DP cable is missing or
not connected.
1. Reseat the cable.
2. Replace the cable.
552—Thunderbolt PCIE cable
not connected.
The Thunderbolt PCIE cable is missing
or not connected.
1. Reseat the cable.
2. Replace the cable.
538—Panel I/O cable not
connected.
The Panel I/O cable is missing or not
connected.
1. Reseat the cable.
2. Replace the cable.
912—Computer Cover Has Been
Removed Since Last System
Start Up
N/A No action required.
Diagnostic codes and errors 69