HITACHI PLASMA 42EDT41 CMP420E1 CMP420V2A - FRONT LED LAMP INDICATIONS

When the indicating lamp lights in orange or the message "No Signal', 'Power Save" or "Invalid Scan Freq" appears on the screen, there is something unusual about the status of reception.  See the Signal Check or Power Save mode or symptoms that seemingly appear to be failures in the owners guide.
SIGNAL CHECK

When the Mode Display is set to ON, the input signal is switched or when the Recall button is pressed.	A guide is displayed for the input terminal and the horizontal and vertical sync frequency
When the sync signal is no longer detected.	A guide displays No Sync. Signal, and Power Save [for approx 5 seconds] When the condition continues where the sync signal cannot be detected, indicator lamp pf power source change in orange and the mode switches to power save mode.
When the input signal does not match the monitor specifications or is in an unstable status.	A guide displays Invalid Scan Freq.

FRONT INDICATING LAMP

Indicating lamp	Power status	Operating
Off	Off	When main power switch is set og OFF
Lights red	Off [standby]	When the main poser switch is ON, and the OFF button on the remote control or the Sub-Power button on the underside of the fronts of the fame is OFF.
Lights green	On	When the main power switch is On, and the ON button on the remote control or the Sub-Power button on the underside of the front of the fame is ON
Lights orange	Off [power save]	When the main power switch is On, and the ON button on the remote control or sub-power button on the underside of the front of the fame is ON However, the state in Power-save mode.