2 Troubleshooting Procedures

2.3Power Supply Troubleshooting

ST A R T

Check Power Supply Status

(Procedure 1)

Are the DC -IN and

 

 

 

No

Battery LEDs lit?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

Replace adaptor / battery

(Procedure 2)

Check power supply

connections

(Procedure 3)

Can you turn the

 

 

 

 

 

 

Run diagnostic program

 

Yes

 

 

computer on?

 

 

 

(Procedure 4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are the internal power

 

 

 

 

 

 

Perform internal connection

 

 

No

 

 

 

check

connections secure?

 

 

 

 

 

 

 

 

 

 

(Procedure 5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

Replace system board

E N D

Figure 2-2 Power Supply Troubleshooting Process

Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual

9

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Image 43
Toshiba PROL450D manual Power Supply Troubleshooting, ST a R T