Sharp 27SC260R, Service Manual

Sub-Tint Adjustment

1. Receive the half color bar signal.

• 

RF INPUT (TU1101)

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.

• 

Component Input and Digital RF Input (TU1101)

4. Input data of "V43" same as "V02".
5. Input data of "V73" same as "V02".

Sub-Color Adjustment

1. Receive a good local channel.
2. Make sure the customer  color control is set to center

position .

• 

RF INPUT (TU1101)

3. Enter the service mode and select service adjustment

"V03".

4. Adjust "V03" data value to obtain a normal color level.
• Component Input
5. Repeat step 3~4, and change "V03" to "V44".
• Digital RF Input (TU1101)
6. Enter the service mode and select adjustment "V74".
7. Enter the value of "V44" data and plus (20h) or plus

32 step of "V44" data. (V74=V44+20h)

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.

Vertical-Size and Linearity Adjustments

1. Receive a good local channel.
(SCREEN FORMAT 4:3)

DISPLAY OF TEXT BOX

TEXT BOX

A

B

| A-B | / 2

SPEC INSPECTION:| A-B | / 2 <

= 5mm

B-AMP Base waveform in step
(TP47B)

LEVEL

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.

(SCREEN FORMAT 16:9)
5. Input data of "D22" to mines 3

2

 step from "D03” data.

(V-SIZE)

6. Input data of "D24" same as "D05" data. (V-LIN)

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.
(SCREEN FORMAT 16:9)
3. Input data of "00h" on "D20".
4. Input data of "D34" same as "D18" data.

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.
(SCREEN FORMAT 16:9)
4. Input data of "D21" same as "D02" data.

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.
(SCREEN FORMAT 16:9)
4. Input data of "D23" same as "D04" data.

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.

(SCREEN FORMAT 16:9)
4. Input data of "D26" to mines 2

4

 step from "D07" data.

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.

(SCREEN FORMAT 16:9)
4. Input data of "D27" same as "D08" data.

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27SC260R