20J-S100/100S
CJ20S10/21MJ50
8
1. Service mode -
Before putting unit into the service mode, check, that
customer adjustments are in the normal mode. use
the reset function in the video adjust menu to ensure
customer controls are in their
2. Service number selection
Once in the service mode, press the channel up or
channel down button on the remote transmitter or at
the set. the service adjustment number will vary in
increments of one, from "S01" to M05.
Select the item you wish to adjust.
3. Data number selection
Press the volume up or down button to adjust the
data number.
To enter the service mode .
While Pressing the Vol-up and Ch- up buttons at once,
plug the AC cord into a wall socket.Now the TV set is
switched on and enters the service mode.
To exit the service mode, shut the television off by
pressing the power button.
For adjustments of this model, the bus data is convered 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 service adjustment is required. See Figure "B" to determine if service adjust-
ments are required.
Vertical-size adjustment
1. Have unit receive a good local channel.
2. Enter the service mode and select service adjustment
"S09".
3. While observing the top and bottom of the screen,
adjust "S09" data value to proper vertical size .
Vertical phase adjustment
1. Enter the service mode and select service adjustment
"S06".
2. Adjust data value to "00"~"03" so that picture is
approximate center.
Note:
This must be set "00"~"03" when adjust another
data retrace line will be appear.
"Horizontal position adjustment
1. Have unit receive a good local channel.
2. Enter the service mode and select service adjustment
"S07".
3. Adjust "S07" data value so that picture is centered.
Figure B.
S01 D:00
02
S01
55
DATA NUMBER
CHANNEL
SERVICE ADJUSTMENT
NUMBER
