Laptop - Computer User Manual

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
the voltage is not correct, replace the power supply.
If any voltages are not correct, replace the power supply.
If the problem remains, replace the main card.
1
1
2
2
21
3
4
22
Connector 1
Connector 2
Power Supply Connector 1
Power Supply Connector 2
Pin Signal V dc Min. V dc Max.
1 CVCC +19 +21
2 Ground – –
Pin Signal V dc Min. V dc Max.
1 −12 volts −11.4 −13.2
3 −5 volts −4.53 −5.5
5 +5 volts +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
ThinkPad SelectaDock Docking System 553