Heat Sink - HP ZBook 17 G4 Mobile Workstation Maintenance And Service Manual

2. Release the WWAN cable and WLAN cable (3) from the routing around the fan, and then remove the fan
(4) from the computer.
Reverse this procedure to install the CPU (right) and GPU (left) fans.

Heat sink

Description
Heat sink for use only with models with NVIDIA N17EQ1 discrete graphics memory
Heat sink for use only with models with NVIDIA N17PQ1 discrete graphics memory
Heat sink for use only with models with NVIDIA N17PQ3 discrete graphics memory
Heat sink for use only with models with AMD UMA graphics memory
Heat sink for use only with models with UMA graphics memory
Before removing the heat sink, follow these steps:
1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the following components:
a. Service door (see
b. Battery (see
c. Base enclosure (see
56 Chapter 6 Removal and replacement procedures for authorized service provider parts
Service door on page
Battery on page 31).
Base enclosure on page
30).
33).
Spare part number
922842-001
922843-001
922844-001
922845-001
922846-001