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