Keyboard Point Stick; Keyboard Backlight - HP zbook 15 G3 Maintenance And Service Manual

Keyboard point stick

Symptom
Point stick not working properly
The sections below are intended for authorized service providers/technicians.
Example of back of keyboard, including
keyboard, point stick, and backlight
cables.

Keyboard backlight

Symptom
Backlight function not working
properly
The sections below are intended for authorized service providers/technicians.
120 Chapter 7 Troubleshooting guide
Possible causes
Dust trapped under point stick, loose point stick cap.
Troubleshooting steps
1. Inspect any signs of dust, liquid spill that prevent point stick from working.
2. Check whether point stick cap is loose and reseat it if necessary.
1. Verify whether keyboard flex cables are in good condition (no delamination or torn
cable end, no missing or cracked tracks, pads).
2. Verify keyboard flex cable ends are fully inserted and aligned with connectors on
system board and back of keyboard and that connector tabs are properly closed.
3. Reseat point stick cables.
Possible causes
Backlight disabled, loose connection.
Troubleshooting steps
NOTE: Not all notebook computers have backlit keyboards.
A keyboard function key lets you turn the light on and off. Verify if backlit feature is not
disabled by pressing a combination of
1. Verify if backlight flex cables are in good condition (no delamination or torn cable end,
no missing or cracked tracks, pads).
2. Verify backlight flex cable ends are fully inserted and aligned with connectors on
system board and that connector tabs are properly closed.
3. Reseat backlight cable.
Fn + Backlit key.