Toshiba libretto U100 Maintenance Manual page 59

2.3 Power Supply Troubleshooting
Procedure 3 Connection Check
The power is supplied as shown below:
Any of the connectors may be disconnected. Perform Check 1.
Check 1 Disconnect the AC power cord from the wall outlet. Check the power cable for
breaks. If the power cord is damaged, connect a new AC power cord. If there is no
damage, go to Check 2.
Check 2 Make sure the AC adaptor cord and AC power cord are firmly plugged into the
DC IN 15 V socket and AC adaptor inlet/wall outlet, respectively. If these cables
are connected correctly, go to Check 3.
Check 3 Make sure the DC IN input port where an AC adapter's DC output plug is
connected is firmly secured to the system board.
• If the DC IN input port is loose, go to Procedure 5.
• If it is not loose, go to Check 4.
Check 4 Make sure the battery pack is installed in the computer correctly. If the battery is
properly installed and the battery icon still does not light, go to Procedure 4.
libretto U100 Maintenance Manual (960-520)
2 Troubleshooting Procedures
[CONFIDENTIAL] 2-15