Serviceman Mode (Electronic Controls) - Panasonic TH-42PX20U Service Update Information

Serviceman mode (Electronic Controls)

This Plasma Display television uses the I²C Bus circuitry to control functions and
replace many mechanical controls. Instead of adjusting mechanical controls
individually, many of the control functions 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 procedure for Entering/Exiting the Serviceman
Adjustment Mode.
Entry to Serviceman Mode:
When minor adjustments need to be done to the electronic controls, the method
of entering the serviceman mode 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" twice to exit menus.
4. Tune to Channel 124.
5. Adjust VOLUME to minimum (0).
6. Press VOL down on the receiver. Red "CHK" appears in the upper left
corner of the screen.
7. Select an active station.
Note: If more than 30 minutes are needed after the receiver is in the
SERVICEMAN mode, setting the TIMER back to NO can disable the Sleep
Timer.
Caution: Prolonged display of patterns WILL cause an after image retention into
the panel.
The Plasma Display receiver is now in Serviceman Mode.
• Press Power on the Remote
Control to display the
Serviceman Adjustment Menu.
• Press Power again on the
Remote Control to exit the
Serviceman Adjustment Menu.
Figure 39
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