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| Repair Center: | Repair Center: |
Symptom | Call Center: Suggestions | Likely Causes | Comments |
Display |
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Dark display, no light | Make sure notebook is turned on and | Display cable connection | Check cable |
| warmed up. | SDRAM modules | connections. |
| Check power supply. | Replace SDRAM | |
| CPU module | ||
| Make sure SDRAM modules are | modules. | |
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| Display assembly |
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| installed properly. | Make sure CPU module | |
| Adjust display brightness. | Motherboard | is installed properly, |
| replace CPU module. | ||
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| Press Fn+F5 several times. |
| Check display cable |
| Try external monitor. |
| connections, replace |
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| display assembly. | |
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| If external monitor |
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| displays no image, |
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| replace motherboard. |
White display | Adjust display brightness. | Display assembly |
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| Switchboard PCA |
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Erratic display |
| Display cable connection | Check display cable |
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| Switchboard PCA | connection. |
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| Display assembly |
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| Motherboard |
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Bright or missing pixels or | See quality statement on page | Display cable connection | Check display cable |
lines. |
| Display assembly | connection. |
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| See quality statement on | |
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| page |
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Punctured display |
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| Declared to be caused by |
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| customer abuse. |
Vertical crack near center |
| Usually caused by closing | Declared to be caused by |
of display. |
| display with | customer abuse. |
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| object on keyboard |
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Scratched display glass |
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| Declared to be caused by |
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| customer abuse. |
Local area of dark or light |
| Caused by excessive | Declared to be caused by |
discoloration visible when |
| pressure applied to area on | customer abuse. |
display is on |
| screen |
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External display does not | Check connections. | External display |
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work | Press Fn+F5 several times. | Motherboard |
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| Try display on another computer. |
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Hard disk |
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Hard disk never spins | Check power source. | Hard drive or connector | If drive case is damaged, |
| Remove and reinstall hard drive. | Motherboard | drive may not operate |
| properly. | ||
| Check connector. |
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Hard disk makes clunking | Back up disk immediately. | Hard drive | Check notebook and |
or scratching noise | Was notebook or drive dropped? |
| drive for evidence of |
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| customer abuse. | |
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Hard disk makes buzzing | Back up disk immediately. | Depends on noise source |
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or whining noise | Check hard disk installation. |
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| Check for alternate noise sources, |
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| such as PCMCIA drive or fan. |
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Service Manual | Troubleshooting and Diagnostics |