JVC AV-21B16 Service Manual page 22

Measuring
Item
instrument
SUB TINT Signal
generator
Remote
control unit
Signal
generator
Oscilloscope
Remote
control unit
W
Y
MODEL
AV-21B16
SECAM BLACK Signal
OFFSET generator
Remote
control unit
Test point Adjustment part
[2. V/C]
6. TINT
TP-47G/R [2. V/C]
TP-E 6. TINT
[CRT SOCKET
PWB]
B
R
M
(-)
0V
(B)
C (+)
G
Voltage setting (B)
NTSC3.58 NTSC4.43
+6V (VDO) ---
[2. V/C]
7. SECAM BL ADJUST
Description
[Method of adjustment without measuring instrument]
NTSC 3.58 TINT
(1) Receive a NTSC 3.58 full field colour bar signal
(75% white).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select < 6. TINT >.
(4) Set the initial setting value of < 6. TINT >.
(5) 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
(1) When NTSC 3.58 is set, NTSC 4.43 will be
automatically set at the respective values.
[Method of adjustment using measuring instrument]
NTSC 3.58 TINT
(1) Receive a NTSC 3.58 full field colour bar signal
(75% white).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select < 6. TINT >.
(4) Set the initial setting value of < 6. TINT >.
(5) Connect the oscilloscope between TP-47G/R and
TP-E.
(6) Adjust NTSC 3.58 TINT to bring the value of (B)
in the voltage table in the left.
NTSC 4.43 TINT
(1) When NTSC 3.58 is set, NTSC 4.43 will be
automatically set at the respective values.
(1) Input a SECAM full field colour bar signal.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select < 7. SECAM BL ADJUST >.
(4) Set the initial setting value of < 7. SECAM BL
ADJUST >.
(5) Switch the [1] key (colour OFF) and [2] key (colour
ON) and make sure that there is no colour on the
black and white screen.
(6) If the black and white screen is not best with the
initial setting value, make fine adjustment until you
get the best black and white screen.
(7) While watching the screen, adjust the value to be the
same colour between ON & OFF by [1] or [2] key.
(8) Press the [DISPLAY] key twice to return to the
normal screen.
(No.YA415)1-23