Table 7-36 Issues, possible causes, and xes (continued)
Items Procedures
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 that 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
Use this information to troubleshoot keyboard backlight issues.
Table 7-37 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 whether backlit feature is
not disabled by pressing a combination of fn + backlit key.
The following steps are for authorized providers or technicians.
1. Verify whether backlight ex cables are in good condition (no delamination or torn
cable end, no missing or cracked tracks or pads).
2. Verify that 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.
Touchpad
Use this information to troubleshoot touchpad issues.
Table 7-38
Issues, possible causes, and xes
Items Procedures
Symptoms
Not working properly
Possible causes
Touchpad turned o, driver, settings.
(1) Touchpad on/o button
(2) Touchpad
Troubleshooting steps
1. Ensure touchpad on/o light is not amber (disabled). Double tap to enable.
Keyboard backlight 111
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