JVC AV-20N3/D, AV-20NMG3/-A, AV-20NMG3B service manual Tint, Crt, Socket

AV-20N3

AV-20NMG3

AV-20NMG3B

Item

Measuring

Test point

Ad justment part

Description

instrument

Ad justment

Signal

6.

TINT

[Method of adjustment without measuring instrument]

of TINTⅠ

generator

Remote

NTSC 3.58 TINT

1. Input a NTSC 3.58 full field colour bar signal (75% white).

control unit

2. Enter the SERVICE MENU.

3. Select 2. V/C from SERVICE MENU.

4. Select 6. TINT with the MENU ▼/▲ key.

5. Set the initial setting value of NTSC 3.58 with the MENU - / +

key.

6. If you cannot get the best tint with the initial setting value, make

fine adjustment until you get the best tint.

NTSC 4.43 TINT

When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the

respective values .

Ad justment

Signal

TP-47G/R

6.

TINT

[Method of adjustment using measuring instrument]

of TINTⅡ

generator

TP-E (#)

Oscillo-

[CRT

NTSC 3.58 TINT

1. Input a NTSC 3.58 full field colour bar signal (75% white).

scope

SOCKET

2. Enter the SERVICE MENU.

PWB]

3. Select 2. V/C from SERVICE MENU.

Remote

4. Select 6. TINT with the MENU ▼/▲ key.

control unit

5. Set the initial setting value of NTSC 3.58 with the MENU - / +

key.

6. Connect the oscilloscope between TP-47G/R and TP-E.

7. Adjust NTSC 3.58 TINT to

bring the value of (B) in the

illustration to the voltage as shown given billow.

Mg

R

B

(Voltage difference between (W) and (Cy))

(－)

Model

Voltage(W- Cy)

AV-20N3

+9V

0V

AV-20N3/D

W

(B)

AV-20NMG3

Y

(＋)

AV-20NMG3B

+9V

Cy

G

AV-20NMG3/-A

NTSC 4.43 TINT

When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values .

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