Panasonic TH-42PA25U/P, Service Manual

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8. Serviceman Mode (Electronic Controls)
This Receiver has electronic technology using the I
2
C BUS Concept. It performs as a control
function and it replaces many mechanical controls. Instead of adjusting mechanical controls
individually, many of the control function are now performedby using “On Screen Display Menu”.
(The Serviceman Adjustment Mode .)
Note
It is suggested that the technician reads all the way through and understand the following the
procedure for Entering/Exiting the Serviceman Mode ; then proceed with the instructions working
the Receiver. When becoming familiarwith the procedure, the Flow Chart for Serviceman Mode
may be used as a quick guide.
Quick Entry to Serviceman Mode:
At times when minor adjustments need to be done to the electronic controls, the method of
Entering the serviceman Mode without removal of the cabinet back is as follows using the
Remote Control:
1. Select SET-UP icon and select CABLE mode.
2. Select TIMER icon and set SLEEP time for 30 Min.
3. Press ACTION button twice to exit menus.
4. Tune to the Channel 124.
5. Adjust VOLUME to minimum (0).
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