JVC TM-A210G/C Service Manual page 29

Measuring
Item
instrument
PAL CHROMA Signal
generator
Oscilloscope
Y
W Cy
75%
Item
<S03> PAL CHROMA
NTSC 3.58 Signal
CHROMA generator
Oscilloscope
Y
75% W Cy
Item
<S04> NTSC CHROMA
Test point Adjustment part
TP-47B [SIGNAL BLOCK]
TP-E S03(PAL CHROMA)
[CRT SOCKET
PWB]
BL
R
G
B
0V 2V
Mg
Initial setting value
128
TP-47B [SIGNAL BLOCK]
TP-E S04 (NTSC CHROMA)
[CRT SOCKET
PWB]
BL
R
G
B
0V 2V
Mg
Initial setting value
128
Description
(1) Input the PAL full colour bar signal (included 75%
white signal).
(2) Connect the oscilloscope probe to TP-47B and TP-
E.
(3) Select the SIGNAL BLOCK with [CHROMA/PHASE]
button (< SIG >) from < BLOCK SELECT >
SERVICE MENU screen.
(4) Select the < S03 >.
(5) Adjust the < S03 > to become the voltage different
between 75% white and blue to 0V±2V as shown in
figure.
(1) Input the NTSC 3.58 full colour bar signal (included
75% white signal).
(2) Connect the oscilloscope probe to TP-47B and TP-
E.
(3) Select the SIGNAL BLOCK with [CHROMA/PHASE]
button (< SIG >) from < BLOCK SELECT >
SERVICE MENU screen.
(4) Select the < S04 >.
(5) Adjust the < S04 > to become the voltage different
between 75% white and blue to 0V±2V as shown in
figure.
(No.52119)1-29