Panasonic CT-27SL13MUG Service Manual page 49

3. Press "ACTION" twice to exit menus.
4. Tune to the channel 124.
5. Adjust VOLUME to minimum (0).
6. Press VOL
corner.
To toggle between aging and service modes:
While the "CHK" is displayed on the left top corner of the CRT, pressing "ACTION" and "VOL"
UP on the TV simultaneously will toggle between the modes. Red "CHK" for serviceand yellow
"CHK" for aging.
7. Press POWER on the remote control to display the service
adjustment modes menu, select adjustment by pressing the
volume right/left buttons and channel up/down buttons on the
remote and ACTION to enter the adjustment.
Exiting the service mode:
This TV goes out from service mode when it is unplugged or turned OFF. To exit the service
mode, turn the TV OFF from or unplug the TV from A.C.
Other method
Press ACTION and POWER on the receiver simultaneously for at least 2 seconds.
The receiver momentarily shuts off; then comes back on tuned to channel 3 with a preset level
of sound.
Any programmed channels, channels caption data and some others user defined settings will
be erased when exited by pressing ACTION and POWER on receiver.
IMPORTANT NOTE
Always check that the TV exits the service mode.
(decrease) on receiver. Red "CHK" appears in upper
21