Power Supply Troubleshooting; Figure2-2 Power Supply Troubleshooting Process - Toshiba Satellite U900 Maintenance Manual

2 Troubleshooting Procedures
2.3

Power Supply Troubleshooting

Check Power Supply Status
Are the internal power
Replace system board
Figure 2-2 Power Supply Troubleshooting Process
Satellite U900/U940/U945 Series Maintenance Manual
START
(Procedure 1)
Are the DC-IN and
Battery LEDs lit?
Yes
Check power supply
connections
(Procedure 3)
Can you turn the
computer on?
No
connections secure?
Yes
END
Replace adaptor / battery
No
(Procedure 2)
Run diagnostic program
Yes
(Procedure 4)
Perform internal connection
No
check
(Procedure 5)
9