2 Troubleshooting Procedures
2.3 Power Supply Troubleshooting
START
Are the D C-IN and
B attery LE D s lit?
Can you turn the
computer on?
A re the internal pow er
connections secure?
END
Check Power Supply Status
(Procedure 1)
No
Yes
Check power supply
connections
(Procedure 3)
Run diagnostic program
(Procedure 4)
Yes
No
R eplace adaptor / battery
(Procedure 2)
No
Perform internal connection
check
(Procedure 5)
Replace system board
Yes
Figure 2-2 Power Supply Troubleshooting Process
Satellite P770/P775 Series Maintenance Manual
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