Troubleshooting Tips
Presented below is a table showing general guidelines for repairing units with specific failure symptoms. The order of likely causes is based upon data gathered by HP from analysis of failed modules. The suggested order of investigation is not mandatory but reflects the priority HP would currently place on looking for the root cause.
Swapping of easily replaced modules with known good reference modules is the ideal way to isolate the cause down to the module level. It is rare for more than one module to be responsible for the same failure symptom. Therefore, replacement of more than one module for a particular symptom should be the exception rather than the normal expectation.
After replacing modules, it is normal for some units to end up in a confused state and lock up when ac power is applied. If this occurs, the reset button should be pressed to bring the computer to a known state. If the unit still locks up or continues to lock up each time ac power is applied, the unit needs additional analysis.
Table 14 - OmniBook Troubleshooting Tips| Symptom | Call Center | Likely Cause | Comments |
|
| (in order) |
|
Battery |
|
|
|
Won’t run on | ∙ Try known good | ∙ Battery |
|
battery — no bars | battery in suspect unit | ∙ |
|
in battery icon | ∙ Try suspect battery in |
|
|
| known good unit |
|
|
| ∙ Send in for repair |
|
|
Battery won’t | ∙ Try known good | ∙ Battery |
|
charge — light | battery |
|
|
blinks | ∙ Send in for repair |
|
|
Battery won’t | ∙ Try known good | ∙ | ∙ Possible solder problem |
charge — no | battery in suspect unit |
| on RT1 |
charge indicators | ∙ Try suspect battery in |
|
|
| known good unit |
|
|
| ∙ Send in for repair |
|
|
Hard Disk Drive |
|
|
|
HDD doesn’t spin | ∙ Verify known good | ∙ | ∙ If the HDD plastic kit is |
at all | power source | ∙ HDD | bent or otherwise |
| ∙ Reseat HDD | ∙ HDD flex | misshapen, the HDD may |
| ∙ Send in for repair | cable | not function properly. |
|
| ∙ HDD plastic kit |
|
Display |
|
|
|
Dark display — no | ∙ Ensure | ∙ Broken | ∙ Replace display |
light | contrast/brightness | backlight tube |
|
| button is installed |
|
|
| properly |
|
|
| ∙ Adjust |
|
|
| contrast/brightness |
|
|
| ∙ Send in for repair |
|
|
Video problems — | ∙ Send in for repair | ∙ Display | ∙ Lift up icon assy — push |
appears horizontal |
| connector not | down on left display |
hold is out |
| seated | connector. |
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