20AR22
20AR32
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 serv-
ice adjustments are required.
1. Service modeTo enter the service mode and exit serv-
Before putting unit into the service mode, checice modek that.
customer adjustments are in the normal mode. Use
the reset function in the video adjustment menu to
Short JA137&JA138 for 1 Second and release to switch
ensure customer controls are in their proper (reset)
to the service mode position, and the microprocessor is
position.2
in input mode.(Adjustment through the IC bus control.)
To exit the service mode, turn the television off by
2. Service item selection
pressing the power button.
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.
SERVICE ADJUSTMENT ITEMDATA NUMBER
AGC:25
Figure A.
6 |
ACEC
