Hitachi ED-X45N User Manual page 104

Phenomena that may be easy to be mistaken for machine defects
Phenomenon Cases not involving a machine defect
The electrical power cord is not plugged in.
The main power source has been interrupted during
operation such as by a power outage (blackout), etc.
Either there is no lamp and/or lamp cover, or either
The signal cables are not correctly connected.
Signal source does not correctly work.
The input changeover settings are mismatched.
The BLANK function for pictures and the MUTE
function for sounds are working.
Troubleshooting
Reference
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