Troubleshooting; How To Get To Burn-In Mode; How To Recover The Remote And R-Side Control Key Function; How To Check Method Of The Use Accumulation Time For Panel - Hitachi 42PD9700C Service Manual

7. Troubleshooting

How to get to Burn-in mode

This mode displays the test patterns of some single color raster in turn. These signals are from built-in gener-
ator of panel. So it can be presumed that maybe the panel has some trouble when the screen of Burn-in
mode is abnormal.
Using the R-side control buttons with the set turned off (standby) can activate this mode.
Press the SUB-POWER( ) button, INPUT SELECT(
same time, and hold for more than 5 seconds.
The set turns on with single color raster and the OSD of [BURN IN: ON].
To escape from this mode, press the SUB-POWER( ) button, INPUT SELECT(
the same time, and hold for more than 5 seconds. Burn-in mode will be released.

How to recover the remote and R-side control key function

If remote and R-side control key cannot operate after miss set special function by front keys, these functions
can recover by below method.
Press the SUB-POWER( ) button, INPUT SELECT(
more than 5 seconds.
The set turns on the service menu mode.
Select No.721 and No.722 then each data set from [0] to [1].
Or
Press the SUB-POWER( ) button and button at the same time, and hold for more than 5 seconds

How to check method of the use accumulation time for panel.

Select No.894 of Service Adjustment Menu.
42PD9700C/U & 55PD9700C/U
) button and VOLUME DOWN(
) button and button at the same time, and hold for
38
) button at the
) button and button at