JVC AV-20320/S Service Manual page 21

ADJUSTMENT OF PICTURE
Measuring
Item
instruments
SUB
BRIGHT
Adjustment
SUB
CONTRAST
Adjustment
SUB
COLOR
Adjustment
SUB TINT
Adjustment
ADJUSTMENT OF MTS CIRCUIT
Measuring
Item
instrument
MTS INPUT
LEVEL
check
MTS Signal
STEREO generator
VCO
adjustment Frequency
counter
Test point Adjustment part
No.1 BRIGHT
No.2 PICTURE
No.6 COLOR
No.5 TINT
Test point Adjustment part
No.1 IN LEVEL
R OUT No.2 FH MON.
[AUDIO OUT]
No.3 ST VCO
1. Receive a broadcast.
2. Select No.1 BRIGHT of the PICTURE MODE.
3. Set the initial setting value of the No.1 BRIGHT with the
LEFT / RIGHT key of the MENU.
4. If the brightness is not best with the initial setting value,
make fine adjustment of the No.1 BRIGHT until you get the
optimum brightness.
1. Receive a broadcast.
2. Select No.2 PICTURE of the PICTURE MODE.
3. Set the initial setting value of the No.2 PICTURE with the
LEFT / RIGHT key of the MENU.
4. If the contrast is not best with the initial setting value, make
fine adjustment of the No.2 PICTURE until you get the
optimum contrast.
1. Receive a broadcast.
2. Select No.6 COLOR of the PICTURE MODE.
3. Set the initial setting value of the No.6 COLOR with the
LEFT / RIGHT key of the MENU.
4. If the color is not best with the initial setting value, make fine
adjustment of the No.6 COLOR until you get the optimum
color.
1. Receive a broadcast.
2. Select No.5 TINT of the PICTURE MODE.
3. Set the initial setting value of the No.5 TINT with the LEFT /
RIGHT key of the MENU.
4. If the tint is not best with the initial setting value, make fine
adjustment of the No.5 TINT until you get the optimum tint.
1. Select the "No.1 IN LEVEL" of the SOUND MODE.
2. Verify that the "No.1 IN LEVEL" is set at its initial setting
value.
1. Receive a RF signal (nonmodulated sound signal) from the
antenna terminal.
2. Select the "No.2 FH MON." of SOUND MODE, and change
the setting value from 0 to 1.
3. Connect the Frequency Counter to R OUT RCA pin of the
AUDIO OUT.
4. Select the "No.3 ST VCO".
5. Set the initial setting value of the "No.3 ST VCO" with the
LEFT/RIGHT key of the menu.
6. Adjust the "No.3 ST VCO" so that the Frequency Counter will
display 15.73kHz 0.1kHz.
7. Select the "No.2 FH MON." of the SOUND MODE, and reset
the setting value from 1 to 0.
No. 51964
AV-20320
AV-20321
Description
Description
21