Sharp 27K-X2000 Service Manual page 11

Sub-Brightness Adjustment
1. Have unit receive a good local channel.
2. Make sure the customer brightness control is set to
center position.
3. Enter the service mode and select the service
adjustment "S12".
4. Adjust "S12" data value to obtain normal brightness
level.
5. Enter the same data value as the "S12" setting to
"C04".
Vertical Linearity Adjustment
1. Feed the circular or crosshatch pattern signal.
2. Enter the service mode and select the service
adjustment "S02".
3. While observing the top and bottom of the screen,
adjust "S02" data value to proper vertical linearity.
Vertical Size Adjustment
1. Feed the circular or crosshatch pattern signal.
2. Enter the service mode and select the service
adjustment "S01".
3. While observing the top and bottom of the screen,
adjust "S01" data value to proper vertical size.
Vertical Phase Adjustment
1. Enter the service mode and select the service
adjustment "S14".
2. Adjust data value to "00".
Note: This must be set "00" when changed data retrace
line will appear.
Horizontal Position Adjustment
1. Have unit receive a good local channel.
2. Enter the service mode and select the service
adjustment "S15".
3. Adjust "S15" data value so that picture is centered.
4. Enter the "S15" setting plus 2 steps to "C07".
Caption Position Adjustment (Horizontal)
1. Have unit receive a good local channel.
2. Enter the service mode and select the service
adjustment "S40".
3. A black text box appears on the screen. (see Figure
B below)
4. Adjust "S40" data value so that text box is positioned
in the center of the screen.
Figure B.
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27K-X2000