Sharp 32SF670 Service Manual page 17

Sub-picture and Sub-Bright Adjustments
1. Receive the window pattern signal.
• RF INPUT (TU1101)
2. Get into service adjustment data "V01" and "V04"
and set the luminance as shown in figure "A" and
"B" as below respectively.
• COMPONENT INPUT
3. Get in service adjustment data "V11" and "V14" and
set the luminance as shown in figure "A" and "B" as
below respectively.
LUMINESCENCE CONFIRMATION
A: 95±10cd/m 2
2
B: 1.5±0.5cd/m
• DIGITAL RF INPUT (TU1101)
4. Get in service adjustment data "V21", "V24".
4-1 Input data of "V21" = "V01" + 05 STEPS.
4-2 Input data of "V24" = "V04" + 40 STEPS.
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 "V95" bus
data to "01".
3. Vary the "V02" bus data until the waveform becomes
as stated below.
4. Reset "V95" bus data to "00".
• Component Input
5. Get into Y-Mute by R/C, or by setting the "V95" bus
data to "01".
6. Vary the "V12" bus data until the waveform becomes
as stated below.
7. Reset "V95" bus data to "00".
• Digital RF Input (TU1101)
8. Input data of "V22" = "V02" + 13 steps.
9. Reset "V95" bus data to "00".
LEVEL
A B
B-AMP Base waveform in step
(TP47B)
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. Enter the service mode and select service adjustment
"V13".
6. Adjust "V13" data value to obtain a normal color level.
• Digital RF Input (TU1101).
7. Input data of "V23" = "V03" + 50 steps.
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 "V113" to display the text box.
3. Adjust the "V113" 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, Linearity and VS-Correct
Adjustments
1. Receive a good local channel.
(SCREEN FORMAT 4:3)
2. Enter the service mode and select the service
adjustment "D04" for V-size.
3. Adjust the "D04" bus data to get the proper V-size.
4. For V-linearity adjustment, select data bus "D07" and
adjust to get the proper vertical linearity.
5. For VS-Correct adjustment, select data bus "D06"
and adjust to get the proper VS-Correction.
(SCREEN FORMAT 16:9)
6. Input data of "D14" to minus 33 steps from "D04" data.
(V-SIZE)
7. Input data of "D17" to minus 3 steps from "D07" data.
(V-LIN)
8. Input data of "D16" is plus 14 steps of data "D06".
(VS-CORRECT)
Note: Aging for 10 min before adjustment. After the
adjustment of V-center and V-size, re-
adjustment for this V-line.
17
32SF670
| A-B | / 2
B