Power Supply Troubleshooting - Toshiba Satellite A665 Series Maintenance Manual

2 Troubleshooting Procedures
2.3

Power Supply Troubleshooting

Check Power Supply Status
The power supply controls many functions and components. To determine if the power
supply is functioning properly, start with Procedure 1 and continue with the other Procedures
as instructed. The flowchart in Figure 2-2 gives a summary of the process. The procedures
Satellite A660/A665 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
Are the internal power
connections secure?
Yes
Replace system board
END
Figure 2-2 Power Supply Troubleshooting Process
Replace adaptor / battery
No
(Procedure 2)
Run diagnostic program
Yes
(Procedure 4)
Perform internal connection
No
check
(Procedure 5)
9