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4. If the voltage is more than
+
11.0 V dc, measure the
resistance between battery terminals 3 and 4. The
resistance must be 4 to 30 K ohm.
If the resistance is not correct, replace the battery
pack. If the resistance is correct, replace the system
board.
Checking the Backup Battery
1. Power off the computer and unplug the AC Adapter
from the computer.
2. Turn the computer upside down.
3. Remove the DIMM cover and backup battery (see
“1010 Backup Battery” on page 298).
4. Measure the voltage of the backup battery. See the
following figure.
Note: Be careful not to measure the wrong side of
the backup battery.
Black (-)
Red (+)
SONY
+
If the voltage is correct, replace the system board.
If the voltage is not correct, the backup battery has
been discharged. Replace the backup battery.
If the backup battery discharges quickly after
replacement, replace the system board.
Wire
Voltage (V dc)
Red
+
2.5 to
+
3.7
Black
Ground
Port Replicator Checkout
Use the following procedure to isolate a port replicator
problem. A port replicator attaches to the system
expansion connector at the bottom of the computer.
1. Power off the computer.
2. Remove the failing devices from the replicator.
3. Unplug the AC adapter from the replicator, if
attached.
4. Remove the port replicator from the computer.
ThinkPad 560 (2640)
275
Summary of Contents for ThinkPad 365C
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Page 8: ...vi IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 12: ...x IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 157: ...15 ThinkPad 365X 365XD 2625 145 Get other manuals https www bkmanuals com...
Page 181: ...Notes ThinkPad 365X 365XD 2625 169 Get other manuals https www bkmanuals com...
Page 260: ...TFT LCD 248 IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 318: ...306 IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 329: ...ThinkPad 560 2640 317 Get other manuals https www bkmanuals com...
Page 336: ...Notes 324 IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 337: ...Parts Listing 560 2640 ThinkPad 560 2640 325 Get other manuals https www bkmanuals com...
Page 402: ...4 4 5 5 390 IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 413: ...Other Models ThinkPad 760 9546 9547 401 Get other manuals https www bkmanuals com...
Page 429: ...Models 760XL 760XD ThinkPad 760 9546 9547 417 Get other manuals https www bkmanuals com...
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Page 515: ...Model 760LD 9547 Misc ThinkPad 760 9546 9547 503 Get other manuals https www bkmanuals com...
Page 558: ...546 IBM Mobile Systems ThinkPad HMM Volume 3 Get other manuals https www bkmanuals com...
Page 630: ...IBM Part Number 84H8099 Printed in U S A S82G 15 3 5 Get other manuals https www bkmanuals com...