Checkout guide
Checking the backup battery: | Do the following: |
1.Power off the computer, and unplug the ac a from it.
2.Turn the computer upside down.
3.Remove the backup battery
Note: Removing the | backup battery | will | cause l | ||
of | configuration | data unless | the | battery | |
is | installed | and | operational. |
|
|
(see “Checking the battery pack” on page 11)
4.Measure the voltage of the backup battery. following figure.
Wire | Voltage | (V dc) |
|
|
|
Red | +2.5 | to+3.2 |
|
|
|
Black | Ground |
|
|
|
|
Ÿ If the voltage is correct, replace the sys
ŸIf the voltage is not correct, replace the battery.
ŸIf the backup battery discharges quickly af replacement, replace the system board.
Port replicator checkout
Use the following procedure to isolate a port r problem. The port replicator attaches to the syst expansion connector at the rear of the computer:
1. Power off the computer.
2. Remove the failing devices from the port re
3.Unplug the AC Adapter from the port replicat attached.
4. Remove the port replicator from the computer.
5.Reconnect the failing device directly to the (If another device is already connected to computer, remove it first.)
6.Go to “Testing the computer” on page 7 and ru diagnostics.
7. If | the | advanced | diagnostic | device test | doe |
an | error, | suspect | a problem | with the port | re |
8.Power off the computer, and reconnect the po replicator.
9.Power on the computer, and run the following advanced diagnostic tests:
ŸSerial port test with the wrap plug install the port replicator
12 ThinkPad 600X Hardware Maintenance Manual
