JVC AV-20N8(BK) Service Manual page 19

Measuring
Item
instrument
Adjustment Remote
of control unit
SUB TINT-I
Adjustment Signal
of generator
SUB TINT-II
Oscillo-
scope
Remote
control
unit
B
Mg
R
(B)
Cy
G
W
Y
Test point Adjustment part
6. TINT
NTSC 3.58 TINT
TP-47G 6. TINT
TP-E (" " " " " )
[CRT
SOCKET
PWB] NTSC 3.58 TINT
(−)
0V
(+)
[Method of adjustment without measuring instrument]
(NTSC 3.58 TINT)
1. Receive a NTSC 3.58 colour bar signal (full field colour bar
75% white).
2. Select 2. V/C from the SERVICE MENU.
3. Select 6. TINT with the MENU a key.
4. Set the initial setting value of NTSC 3.58 with the MENU − or
+ key.
5. If you cannot get the best tint with the initial setting value,
make fine adjustment until you get the best tint.
6. Press the DISPLAY key twice to return to the normal screen.
(NTSC 4.43 COLOUR)
When adjustment is done for NTSC 3.58 TINT, appropriate val-
ues are automatically set for NTSC 4.43 TINT.
[Method of adjustment using measuring instrument]
(NTSC 3.58 TINT)
1. Receive a NTSC 3.58 colour bar signal (full field colour bar
75% white).
2. Select 2. V/C from the SERVICE MENU.
3. Select 6. TINT with the MENU a key.
4. Set the initial setting value of NTSC 3.58 with the MENU − or
+ key.
5. Connect the oscilloscope between TP-47G and TP-E.
6. Adjust NTSC 3.58 TINT to set the value (B) in the figure to
+6V (W & Cy).
7. Press the DISPLAY key twice to return to the normal screen.
(NTSC 4.43 TINT)
When adjustment is done for NTSC 3.58 TINT, appropriate val-
ues are automatically set for NTSC 4.43 TINT.
No. 56030
AV-20N8
Description
19