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Service Hints & Tips |
Document ID: LWIK-3YGN2Y |
TP 600/E - LCD, modem, and PC Card related symptoms
Applicable to: World-Wide
The following information is intended for IBM Dealers and Authorized Servicers only. Customers attempting to follow any of the procedures below may void their warranty.
LCD-Related Symptoms
Important
The TFT LCD for the notebook computer contains over 2,359,296 thin-film transistors (TFTs). A small number of missing, discolored, or lighted dots (on all the time) is characteristic of TFT LCD technology, but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing, discolored, or lighted dots in any background is 21 or more. |
Symptom / Error |
FRU / Action in Sequence |
No beep, power-on indicator on, and a blank LCD during POST. |
1. System board |
LCD backlight not working. |
1. Reseat the LCD connectors. |
LCD screen unreadable. |
1. See important note for LCD-Related Symptoms above. |
LCD has extra horizontal or vertical lines displayed. |
1. LCD assembly |
Symptom / Error |
FRU / Action in Sequence |
In OS/2, DOS, or Windows multimedia programs, no sound comes from the computer. (Only system beeps are heard at power-on.) |
Check that the device driver is installed correctly. |
In OS/2, DOS, or Windows, the modem does not work. |
Check that the DSP Modem is active. |
PC Card-Related Symptoms
Symptom / Error |
FRU / Action in Sequence |
PC Card does not work in either the upper slot or the lower slot. |
1. Reseat the PCMCIA slot assembly. |
PCMCIA slot pin is damaged. |
PCMCIA slot assembly |
PC Card does not work. |
1. Reseat the PC Card |
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Hint Category |
Hardware Maintenance Information | |
Date Created |
19-09-98 | |
Last Updated |
19-01-99 | |
Revision Date |
19-01-2000 | |
Brand |
IBM ThinkPad | |
Product Family |
ThinkPad 600, ThinkPad 600E | |
Machine Type |
2645, 2646 | |
Model |
Various | |
TypeModel |
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Retain Tip (if applicable) |
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Reverse Doclinks |