20/21V-L110M
For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit.
Note:There are still a few analog adjustments in this series such as focus and master screen voltage. Follow the
steps below whenever the service adjustment is required. See ?Table-B? to determine, if service adjustments
are required.
1. Service modeTo enter the service mode and exit service mode.
Before putting unit into the service mode, check that
customer adjustments are in the normal mode. UseShort JA137 & JA138 for 1 Second and release to switch
the reset function in the video adjustment menu toto the service mode position, and the microprocessor is in
2
ensure customer controls are in their proper (reset)input mode. (Adjustment through the IC bus control.) To
position.exit the service mode, turn the television off by pressing
the power button.
2. Service item selection
Once in the service mode, press the Ch-up or Ch-
down button on the remote controller or at the set.
The service adjustment item will vary in increments of
one. Select the item you wish to adjust.
3. Data number selection
Press the Vol-up or down button to adjust the data
number.
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