HP ZBook 17 Maintenance and Service Guide - Page 147

Keyboard point stick Items Procedures Symptom Point stick not working properly 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. The sections below are intended for authorized service providers/technicians. 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. Example of back of keyboard, including keyboard, point stick, and backlight cables. Keyboard backlight Items Procedures Symptom Backlight function not working properly 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 Fn + Backlit key. The sections below are intended for authorized service providers/technicians. 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. Common issues and possible solutions 133