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Service Hints & Tips |
Document ID: GSMH-3D7DKQ |
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This document is provided to IBM and our Business Partners to help sell and/or service IBM products. It is not to be distributed beyond that audience or used for any other purpose. |
TP 3550 Expansion Unit - Undetermined Problem
Applicable to: World-Wide
Undetermined Problem:
Use the following procedure when the diagnostic tests do not identify the failing adapter or device.
Check the power supply (see ¿Power Systems Checkout—). If the power supply is operating correctly, return here and continue with the following procedure.
1. Power-off the 3550 Expansion Unit.
2. Remove or disconnect one of the following adapters or devices. (Do not isolate adapters or devices that are known to be good.)
a. Non-IBM devices
b. Modem, printer, mouse, external keyboard, external display, numeric keypad, or other external devices
c. Any adapter
d. SCSI device
3. Power-on the 3550 Expansion Unit and reconfigure the system.
4. Run system checkout (see Step 016). If diagnostic tests cannot be loaded from the computer hard disk drive, load and run the tests from the Reference Diskette. Test only those adapters and devices still attached to the 3550 Expansion Unit.
5. If the symptom remains, repeat steps 1 through 4 until you find the failing adapter or device.
6. If the problem remains, replace the system board of the 3550 Expansion Unit.
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Hint Category |
Hardware Maintenance Information | |
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Date Created |
10-01-97 | |
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Last Updated |
07-04-98 | |
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Revision Date |
06-04-99 | |
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Brand |
IBM ThinkPad | |
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Product Family |
ThinkPad Docking Stations | |
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Machine Type |
3550 | |
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Model |
001 | |
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TypeModel |
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Retain Tip (if applicable) |
N/A | |
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