JVC TM-H150CG/E Service Manual page 31

Measuring
Item
instrument
PAL CHROMA Signa
generator
Oscilloscope
Y
75% W Cy
NTSC CHROMA Signal
generator
Oscilloscope
Y
75% W Cy
Test points Adjustment part
TP-47B [SIGNAL BLOCK]
TP-E S03 : PAL CHROMA
[CRT SOCKET
PWB]
R
G
B
0V 2V
Mg
TP-47B [SIGNAL BLOCK]
TP-E S04: NTSC CHROMA
[CRT SOCKET
PWB]
R
G
B
0V 2V
Mg
Adjustment procedure
(1) Input the PAL color bar signal (75% white).
(2) Connect the oscilloscope to TP-47B and TP-E.
(3) Select the SIGNAL BLOCK with [CHROMA/PHASE]
button (< SIG >) from < BLOCK SELECT > screen.
(4) Select the < S03 >(PAL CHROMA).
(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 full color bar signal (75% white).
(2) Connect the oscilloscope to TP-47B and TP-E.
(3) Select the SIGNAL BLOCK with [CHROMA/PHASE]
button (< SIG >) from < BLOCK SELECT > screen.
(4) Select the < S04 >(NTSC CHROMA).
(5) Adjust the < S04 > to become the voltage different
between 75% white and blue to 0V±2V as shown in
figure.
(No.YA068)1-31