This service menu use for
Use recommended components.
Please use to same characteristic component, which is same as previous for your safety and keep reliability especially marked by in parts list and circuit diagram.
It is reason of electric shock or fire if you use non-recommended component.
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 generator
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 button and VOLUME DOWN button at the
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 button and button at
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 button and button at the same time, and hold for
more than 5 seconds.
Hitachi 42PD9700C/U TV Service Menu
Photo credit : rejigdesign.com
The set turns on the service menu mode.
Select No.721 and No.722 then each data set from  to .
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.