Maintenance and Service Guide

Keyboard point stick
Table 8-36 Issues, possible causes, and xes
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.
Example of back of keyboard, including
keyboard, point stick, and backlight
cables.
1. Verify whether keyboard ex cables are in good condition (no delamination or torn
cable end, no missing or cracked tracks, pads).
2. Verify keyboard ex 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.
Keyboard backlight
Table
8-37 Issues, possible causes, and xes
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 o. 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 ex cables are in good condition (no delamination or torn cable end,
no missing or cracked tracks, pads).
2. Verify backlight ex cable ends are fully inserted and aligned with connectors on
system board and that connector tabs are properly closed.
3. Reseat backlight cable.
120 Chapter 8 Troubleshooting guide