JVC AV-32230 Service Manual page 27

ADJUSTMENT OF DEFLECTION
Measuring
Item
instrument
V CENTER and Signal
generator
TRAPEZIUM
Adjustment
V-SIZE and Signal
V-LINEARITY generator
Adjustment
Screen size
Screen
size 92%
Picture size 100%
H SIZE and
Signal
H POSITION generator
Adjustment
Screen size 92%
Screen
size
Picture size 100%
Test point Adjustment part
No.68 V CENTER
No.78 TRAPEZ
No.66 V SIZE
No.65 V LIN
Picture
size 100%
No.73 H SIZE
No.72 H POSI
Picture
size 100%
No. 51802
Description
Note:
Proceed to the following this adjustment after having completed the
adjustments of SUB BRIGHT and SUB CONTRAST.
1. Receive a crosshatch signal.
2. Adjust the No.68 V CENTER of the PICTURE MODE to be the same
between the CRT vertical center and crosshatch vertical center.
3. Adjust the No.78 TRAPEZ of the PICTUER MODE to be the vertical
lines straight.
4. Confirm the vertical lines to be straight. If it is not straight, adjust to
be straight at the No.78 TRAPEZ.
Note:
Proceed to the following this adjustment after having completed the
adjustments of SUB BRIGHT and SUB CONTRAST.
1. Receive a crosshatch signal.
2. Select the No.66 V SIZE of the PICTURE MODE to squeeze the
laster.
3. Adjust the No.65 V LIN of the PICTURE MODE to be symmetrical.
4. Adjust the No.66 V SIZE until the vertical screen size is 92%.
Note:
Proceed to the following this adjustment after having completed the
adjustments of FOCUS, SUB BRIGHT, SUB CONTRAST, V CENTER,
TRAPEZIUM, V-SIZE and V-LINEARITY.
1. Receive a crosshatch signal.
2. Select the No.73 H SIZE of the PICTURE MODE.
3. Set the initial setting value of the No.73 H SIZE with the LEFT /
RIGHT key of the remote control unit.
4. Adjust the No.73 H SIZE until the horizontal screen size is 92%.
5. Adjust the No.72 H POSI until the screen will be horizontally centered.
AV-32230
AV-32260
27