4. If the voltage is more than
+
11.0 V dc, measure the
resistance between the battery terminals 3 and 4.
The resistance must be 4 to 30 K ohms.
If the resistance is not correct, replace the battery.
If the resistance is correct, replace the DC/DC card.
Checking Operational Charging
Note
Battery charging will not start unless the Fuel-Gauge
is below 95%. At below 95%, the battery will start
charging to 100% of its capacity. This limitation
protects the battery from overcharging and also
prolongs its life.
To check the operational charging, install a fully
discharged battery or a battery that is less than 50%
charged.
Turn on the computer while it is connected to the AC
Adapter. If the battery status indicator does not turn on,
turn off the computer, remove the battery, and let the
battery return to room temperature. Reinstall the battery,
and turn on the computer (still connected to the AC
Adapter). If the charge indicator still does not turn on,
replace the battery.
Backup Battery Checkout
(Nonrechargeable)
1. Turn off the computer and unplug the AC Adapter
from the computer.
2. Open the Memory-slot cover.
3. Remove the backup battery. (Refer to “1010 DIMM
Card and Backup Battery” on page 62 to remove the
battery.)
4. Measure the voltage of the backup battery connector.
Wire
Voltage (V dc)
Red
+
2.5 to
+
3.7
Black
Ground
IBM ThinkPad 380XD, 385XD (2635)
31
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 ...