JVC AV-21L41/BK Service Manual page 20

Measuring
Item
instrument
Signal
Adjustment
generator
of SUB
COLOUR Ⅱ Ⅱ Ⅱ Ⅱ
Oscillo-
scope
Remote
control unit
W
Y
Cy
Test point Adjustment part
TP-47G/R 5. COLOUR
TP-E (# # # # )
PAL COLOUR
[CRT SOCKET
PWB]
B
R
Mg
(－)
0V
(A)
(＋)
G
SECAM COLOUR
NTSC 3.58 COLOUR
NTSC 4.43 COLOUR
[Method of adjustment using measuring instrument]
1. Input a PAL full field colour bar signal (75% white).
2. Select 2. V/C from SERVICE MENU.
3. Select 5. COLOUR with the MENU ▼ / ▲ key.
4. Set the initial setting value of PAL COLOUR with the MENU
- or + key.
5. Connect the oscilloscope between TP-47G/R and TP-E ( # ).
6. Adjust PAL COLOUR to bring the value of
to +9V(W-G). (Voltage value between ( W ) and ( G ))
1. Input a SECAM full field colour bar signal (75% white).
2. Set the initial setting value of SECAM COLOUR with the MENU
- or + key.
3. Adjust SECAM COLOUR to bring the value of
illustration to +6V(W-G). (Voltage value between ( W ) and ( G ))
1. Input a NTSC 3.58 full field colour bar signal (75% white).
2. Set the initial setting value of NTSC 3.58 COLOUR with the
MENU - or + key.
3. Adjust NTSC 3.58 COLOUR to bring the value of
illustration to +8V(W-G). (Voltage value between ( W ) and ( G ))
When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the
respective values.
No. 51859
Description
(A)
in the illustration
(A)
(A)
AV-21L41
in the
in the
23