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14 Service mode (electronic adjustments)
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This receiver has electronic technology using the IC bus concept. It performs as a control function
and it replaces many mechanical controls. Instead of adjusting mechanical controls individually,
many of the control functions are now performed byusing "on screen display menu". (The service
adjustment mode).
NOTE
It is suggested that the technician reads all the way through and understand the following procedure
for entering/exiting the service adjustment mode; then proceed with the instructions working with
the receiver. When becoming familiarwith the procedure, the flow chart for service mode may be
used as a quick guide.
Quick entry to service mode
When minor adjustments need to be done to the electronic controls, the method of entering the
service 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. Exit menus.
4. Tune to the channel 124.
5. Adjust VOLUME to minimum (0).
6. Press VOL → (decrease) on receiver. Red "CHK" appears in upper corner.
NOTE
After receiver is set into service mode, set TIMER back to NO.
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.
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