JVC AV-21F1P Service Manual page 20

AV-21F1P
Measuring
Item
instrument
Adjustment Signal
of SUB generator
COLOR-II
Oscillo-
scope
Remote
control
unit
Y
G
R
W
Cy
Mg
B
Adjustment Signal
of Generator
SUB TINT-I
Remote
control
unit
20
Test point Adjustment part
TP-47B
TP-E (" " " " " )
[CRT
SOCKET 3. COL. PALM
PWB]
(−)
0V
4. COL. PALN
(+)
(A)
5. COL. NTSC
6. TINT
[Method of adjustment using measuring instrument]
(PAL-M COLOR)
1. Receive a PAL-M full field color bar signal (75% white).
2. Select the sub menu screen PICTURE from the SERVICE
MENU.
3. Select 3. COL. PALM with the MENU 1/4 key, and confirm
its initial setting value.
4. Connect the oscilloscope between TP-47B and TP-E.
5. Adjust 3. COL. PALM to set the value (A) in the figure to +11V
(W & B), with the MENU 2/3 key.
(PAL-N COLOR)
1. Receive a PAL-N full field color bar signal (75% white).
2. In the sub menu screen PICTURE, select 4. COL. PALN with
the MENU 1/4 key, and confirm its initial setting value.
3. Connect the oscilloscope between TP-47B and TP-E.
4. Adjust 4. COL. PALN to set the value (A) in the figure to +10V
(W & B), with the MENU 2/3 key.
(NTSC COLOR)
1. Receive a NTSC full field color bar signal (75% white).
2. In the sub menu screen PICTURE, select 5. COL. NTSC with
the MENU 1/4 key, and confirm its initial setting value.
3. Connect the oscilloscope between TP-47B and TP-E.
4. Adjust 5. COL. NTSC to set the value (A) in the figure to +10V
(W & B), with the MENU 2/3 key.
[Method of adjustment without measuring instrument]
1. Receive a NTSC color bar signal.
2. Select the sub menu screen PICTURE from the SERVICE
MENU.
3. Select 6. TINT with the MENU 1/4 key, and confirm its initial
setting value.
4. If the tint is not the best with the initial set value, make fine
adjustment until you get the best tint, with the MENU 2/3 key.
No. 56033
Description