JVC AV20D202/S
Service Manual

AV-20D202

Item SUB BRIGHT Adjustment

Measuring instruments

Test point

Adjustment part No.1 BRIGHT

Description 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.

SUB CONTRAST Adjustment

No.2 PICTURE

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.

SUB COLOR Signal adjustment generator Oscilloscope Remote control unit

TP-R TP-E(#) # [CRT SOCKET PWB]

No.3 COLOR

[ Method of adjustment without measuring instrument ]

1. Receive a broadcast. 2. Select �No.3 COLOR� of the PICTURE MODE. 3. Set the initial setting value of the �No.3 COLOR� with the LEFT/RIGHT key of the MENU. 4. If the color is not the best with the Initial setting value, make fine adjustment of the �No.3 COLOR� until you get the optimum color.

[ Method of adjustment using measuring instrument ]

1. Input the full field color bar signal (75% white). 2. Select �No.3 COLOR� to the PICTURE MODE. 3. Set the initial setting value of the �No.3. COLOR� with the LEFT/RIGHT key of the MENU. 4. Connect the oscilloscope between TP-R and TP-E. 5. Adjust COLOR and bring the value of (A) in the illustration to the

Cy G B

voltage +15V (VW-R).

W
Y Mg

(A)

(-) 0V (+)

R

22

No. 51789