5.3 Checking the Backup Battery
1. Remove the keyboard and the top cover.
2. Disconnect the battery connector from the system board.
3. Measure the voltage of the backup battery.
PICTURE 5
+------------------------------------------------------------------------+
¦ Wire ¦ Voltage (V dc) ¦
+------------------------------------+-----------------------------------¦
¦ Red ¦ +2.5 to +3.7 ¦
+------------------------------------+-----------------------------------¦
¦ Black ¦ Ground ¦
+------------------------------------------------------------------------+
If the voltage is correct, replace the system board. If it is not, the
backup battery is discharged by a short circuit or is defective.
IBM PS/2 Model CL57 SX HMS
Checking the Backup Battery
¦ Copyright IBM Corp. 1992
5.3 - 1
Содержание PS/2 CL57 SX
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Страница 38: ...13 0 System Overview PICTURE 7 IBM PS 2 Model CL57 SX HMS System Overview Copyright IBM Corp 1992 13 0 1...
Страница 42: ...Printed in the United States of America IBM PS 2 Model CL57 SX HMS Parts Copyright IBM Corp 1992 14 0 4...