JVC AV-21TG16, Service Manual

Page: 22 / 67

1-22 (No.YA414)
SUB COLOUR Remote
control unit [2. V/C]
5. COLOUR
(PAL / SECAM / NTSC) [Method of adjustment without measuring instrument]
PAL COLOUR
(1) Receive a PAL broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select
< 5. COLOUR > .
(4) Set the initial setting value of < 5. COLOUR > .
(5) If the colour is not the best with the initial setting
value, make fine adjustment until you get the best
colour.
SECAM COLOUR
(1) Receive a SECAM broadcast.
(2) Make fine adjustment of SECAM COLOUR as
previously.
NTSC 3.58 COLOUR
(1) Receive a NTSC 3.58MHz broadcast.
(2) Make similar fine adjustment of NTSC 3.58
COLOUR as previously.
NTSC 4.43 COLOUR
(1) When NTSC 3.58 adjustment completed, NTSC
4.43 will be automatically set at the respective
values.
Signal
generator
Oscilloscope
Remote
control unit TP-47G/R
TP-E
[CRT SOCKET
PWB] [2. V/C]
5. COLOUR
(PAL / SECAM / NTSC) [Method of adjustment using measuring instrument]
PAL COLOUR
(1) Receive a PAL full field colour bar signal (75%
white).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select
< 5. COLOUR > .
(4) Set the initial setting value of < 5. COLOUR > .
(5) Connect the oscilloscope between TP-47G/R and
TP-E.
(6) Adjust PAL COLOUR to bring the value of (A) in
the voltage table.
SECAM COLOUR
(1) Receive a SECAM full field colour bar signal (75%
white).
(2) Set the initial setting value of SECAM COLOUR .
(3) Adjust SECAM COLOUR to bring the value of
(A)
in the voltage table.
NTSC 3.58 COLOUR
(1) Receive a NTSC 3.58 full field colour bar signal
(75% white).
(2) Set the initial setting value of NTSC 3.58
COLOUR.
(3) Adjust NTSC 3.58 COLOUR to bring the value of
(A) in the voltage table.
NTSC 4.43 COLOUR
(1) When NTSC 3.58 is set, NTSC 4.43 will be
automatically set at the respective values.
Item
Measuring
instrument
Test point Adjustment part Description
W
Y
C
G
M
R
B
(A)
0V
(+)
Voltage setting (A)
PAL SECAM NTSC3.58
+8V
(RF)
NTSC4.43
AV-21TG16/U +12V +3V ---
MODEL