Toshiba PORTEGE M780 Maintenance Manual page 62

Troubleshooting Procedures
 With no error surveillance
Error code
E0h
E1h
E2h
 Miscellaneous
Error code
F0h
Check 2 In the case of error code 10h or 12h:
 Make sure the AC adapter and AC power cord are firmly plugged into the DC
 Connect a new AC adapter and AC power cord. If the problem still occurs, go
Check 3 In the case of error code 21h:
 Go to Procedure 3.
Check 4 For any other errors, go to Procedure 5.
2-20
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Meaning
voltage is over 5.00V.
voltage is under 0.00V when the computer is powered on.
voltage is under 0.00V when the computer is booting up.
Meaning
The sub clock does not oscillate.
IN 15 V socket and wall outlet. If the cables are connected firmly, go to the
following step.
to Procedure 5.
[CONFIDENTIAL] PORTEGE M780 Maintenance Manual (960-809)