Sharp 27F543 Service Manual page 10

27F543
Sub-Tint Adjustment
1. Receive the half color bar signal.
• RF INPUT (TU51)
2. Get into Y-Mute by R/C, or by setting the "V11" bus
data to "01".
3. Vary the "V02" bus data until the waveform becomes
as stated below.
LEVEL
Sub-Color Adjustment
1. Receive a good local channel.
2. Make sure the customer color control is set to center
position .
• RF INPUT (TU51)
3. Enter the service mode and select service adjustment
"V03".
4. Adjust "V03" data value to obtain a normal color level.
Focus Adjustment
1. Receive a good local channel.
2. Adjust the FOCUS VR of the flyback transformer to
make the image as fine as possible.
C. C Display Position Adjustment
1. Receive the lion head pattern signal.
2. Select "EX2" to display the text box.
3. Adjust the "EX2" bus data to let the text box displayed
in the center.
DISPLAY OF TEXT BOX
TEXT BOX
A
SPEC INSPECTION:| A-B | / 2 < = 5mm
Vertical-Size and Linearity Adjustments
1. Receive a good local channel.
(SCREEN FORMAT 4:3)
2. Enter the service mode and select the service
adjustment "D03" for V-size.
3. Adjust the "D03" bus data to get the proper V-size.
4. For V-linearity adjustment, select data bus "D05" and
adjust to get the proper vertical linearity.
B-AMP Base waveform in step
(TP47B)
| A-B | / 2
B
Note: Aging for 10 min before adjustment. After the
adjustment of V-center and V-size, re-
adjustment for this V-line.
Vertical Phase Adjustment
(SCREEN FORMAT 4:3)
1. Enter the service mode and input data of "00h" on
"D01".
2. Adjust "D18" data value so that picture is centered.
Horizontal Position Adjustment
1. Receive a good local channel.
(SCREEN FORMAT 4:3)
2. Enter the service mode and select the service
adjustment "D02".
3. Adjust "D02" data value so that picture is centered.
Horizontal-Size Adjustment
1. Receive a good local channel.
(SCREEN FORMAT 4:3)
2. Enter the service mode and select the service
adjustment "D04" for H-size.
3. Adjust the "D04" bus data to get the proper H-size.
EW-Parabola
1. Receive a good local channel.
(SCREEN FORMAT 4:3)
2. Enter the service mode and select the service
adjustment "D07" for EW parabola.
3. Adjust the "D07" bus data to get the proper vertical
straight line for both left and right side.
EW-Trapezium
1. Receive a good local channel.
(SCREEN FORMAT 4:3)
2. Enter the service mode and select the service
adjustment "D08" for EW-Trapezium.
3. Adjust the "D08" bus data to get the best position
display.
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