Serviceman Mode (Electronic Controls) - Panasonic TH-42PA20U-P Service Manual

8 Serviceman Mode (Electronic Controls)

This Receiver has electronic technology using the I
mechanical controls. Instead of adjusting mechanical controls individually, many of the control function are now performed by
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 familiar with 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).
6. Press the VOL
To toggle between Aging and Serviceman modes:
While the "CHK" is displayed on the left top corner of the screen, pressing the Action and the Volume up button on the
Receiver simultaneously will toggle between the modes. Red "CHK" for Serviceman and yellow "CHK" for Aging.
2
button (decrease) on Receiver. Red "CHK" appears in upper corner.
C BUS Concept. It performs as a control function and it replaces many
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TH-42PA20U-P