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2 Troubleshooting
Procedure 2 Connection Check
Power is supplied to the system board as illustrated below:
AC power cord
Follow the steps below to check whether each connector has been connected correctly:
Check 1
Make sure the AC adaptor and AC power cord have been firmly plugged
into the DC IN socket and wall outlet, respectively. When they have been
connected correctly, perform Check 2.
Check 2
Connect a new AC adaptor and AC power cord.
• If the DC IN LED does not go on, go to Procedure 3.
• If the battery LED does not go on, perform Check 3.
Check 3
Make sure the battery pack has been correctly installed in the computer.
If the battery LED does not go on while the battery pack has been installed
correctly, go to Procedure 3.
Procedure 3 Replacement Check
The system board may be faulty. Disassemble the computer according to Chapter 4 and
follow the steps below:
Check 1
Replace the system board with a new one.
2-8
AC
adaptor
AC adaptor cord
2.3 Power Supply
System board
Battery pack
TOSHIBA NB100 Maintenance Manual
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