c.
Replace the DC/DC card.
d.
If the problem is not corrected, replace the
system board.
e.
If the problem persists, go to “Undetermined
Problems” on page 48.
2. Unplug the AC Adapter cable from the ac power
outlet and wait 5 minutes or longer to allow the
overvoltage protection circuit to be fully discharged
and initialized.
3. Plug the AC Adapter cable into the ac power outlet.
4. Measure the output voltage of the AC Adapter.
5. If the voltage is still not correct, replace the AC
Adapter.
Note: An audible noise from the AC Adapter does not
always indicate a defect.
Battery Checkout:
If the error is due to the battery,
do the following:
1. Turn off the computer.
2. Remove the battery and measure the voltage
between the battery terminals 1 (
+
) and 4 (
−
).
Note: Signal lines not used in these steps are used
for communication between the system and
the battery.
3. If the voltage is less than
+
11.0 V dc, the battery has
been discharged. Recharge the battery.
If the voltage is still less than
+
11.0 V dc after
recharging, replace the battery.
Note: The voltage of the battery could show 0 V
because of the overdischarge protection
circuit. Try to trickle charge the battery by
attaching it to the computer with the AC
adapter.
Terminal
Voltage (V dc) / Signal
1
+
0 to
+
13.5
4
Ground (
−
)
30
IBM ThinkPad 380XD, 385XD
Summary of Contents for ThinkPad 380XD
Page 2: ......
Page 8: ...vi IBM ThinkPad 380XD 385XD ...
Page 88: ...2635 8xx 9xx Axx Bxx 2635 Dxx Exx Fxx 80 IBM ThinkPad 380XD 385XD ...
Page 110: ...When replacing Replace the LCD miscellaneous parts as follows 102 IBM ThinkPad 380XD 385XD ...
Page 111: ...2050 LCD Cable IBM ThinkPad 380XD 385XD 2635 103 ...
Page 119: ...LCD FRU HPA Labeled 05K9309 or 05K9320 IBM ThinkPad 380XD 385XD 2635 111 ...
Page 121: ...TFT 1 Labeled 05K9312 or 05K9322 IBM ThinkPad 380XD 385XD 2635 113 ...
Page 123: ...TFT 2 Labeled 05K9311 or 05K9321 IBM ThinkPad 380XD 385XD 2635 115 ...
Page 132: ...IBM Part Number 10L9623 Printed in U S A S1ðL 9623 ðð ...
