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34.816 bytes |
Service Hints & Tips |
Document ID: RJJR-3QRLQU |
TP SelectaDock I - Power Supply Checkout
Applicable to: World-Wide
Power Supply
If the power-on indicator is not on and the power supply fan is not turning, check the power cord for continuity and correct installation.
If the power cord is not the problem, either the power supply is defective, or another component is defective causing the power supply to cut off. To verify that the power supply is operating correctly, do the following:
1. Power-off the computer and disconnect the IBM ThinkPad Dock I power cord.
2. Remove all internal and external devices, and the computer from the IBM ThinkPad Dock I.
3. Undock the IBM ThinkPad Dock I.
4. Remove power supply connector 1 from the riser card.
5. Install jumpers between pins 1 and 10, and pins 3 and 8 on the main card.
6. Connect the power cord.
7. Check the voltages at connector 1.
8. Disconnect the power cord.
9. Remove power supply connector 2 from the main card.
10. Install jumpers between pins 6 and 8, and pins 1 and 17 of connector 2.
11. Reconnect the power cord.
12. Check the power supply voltages at connector 2.
If any voltages are not correct, replace the power supply.
If the problem remains, replace the main card.
Power Supply Connector 1
Pin Signal V dc Min. V dc Max.
1 CVCC +19 +21
2 Ground - -
Power Supply Connector 2
Pin Signal V dc Min. V dc Max.
1 -12 volts -11.4 -13.2
3 -5volts -4.53 -5.5
5 +5volts +4.75 +5.25
7 SUB 12 +11.4 +12.6
9 +12 volts +11.4 +12.6
11-13 +3.3 +3.0 +3.6
17-19 +5 +4.75 +5.25
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Hint Category |
Hardware Maintenance Information | |
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Date Created |
02-08-96 | |
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Last Updated |
27-08-98 | |
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Revision Date |
21-08-99 | |
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Brand |
IBM ThinkPad | |
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Product Family |
ThinkPad Docking Stations | |
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Machine Type |
3547 | |
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Model |
001 | |
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TypeModel |
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Retain Tip (if applicable) |
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Reverse Doclinks |