JVC AV28R100EKS Service Manual page 55

Measuring
Item
instrument
Adjustment Signal
of SUB generator
COLOUR Ⅱ Ⅱ Ⅱ Ⅱ
Oscilloscope
Remote
control unit
Mg
W
Y
Cy
G
Test point Adjustment part
5.COLOUR
TP-47G
TP-E(! ! ! ! )
[CRT
PAL COLOUR
SOCKET
PWB ]
B
R
( － )
0V
( )
＋
(A)
SECAM COLOUR
NTSC 3.58 COLOUR
NTSC 4.43 COLOUR
No. 51754
Description
[Adjustment method using measuring instrument]
1. Input the PAL full field colour bar signal (with 75% white).
2. Select 2.V/C from the SERVICE MENU.
3. Select 5.COLOUR with the MENU UP/DOWN key.
4. Set the initial setting value of PAL COLOUR with the MENU
LEFT/RIGHT key.
5. Connect the oscilloscope between TP-47G and TP-E( ! ).
6. Adjust PAL COLOUR to bring the value of (A) in the illustration
-3V
to (Voltage difference between white (W) and green (G)).
7. Press the OK key and memorize the setting value.
1. Input the SECAM full field colour bar signal ( with 75% white).
2. Set the initial setting value of SECAM COLOUR with the MENU
LEFT/RIGHT key.
3. Adjust SECAM COLOUR to bring the value of (A) in the
-5V
illustration to (Voltage difference between white (W) and
green (G)).
4. Press the OK key and memorize the setting value.
1. Input the NTSC 3.58MHz full field colour bar signal ( with 75%
white).
2. Set the initial setting value of NTSC 3.58 COLOUR with the
MENU LEFT/RIGHT key.
3. Adjust NTSC 3.58 COLOUR and bring the value of (A) in the
+6V
illustration to (Voltage difference between white (W) and
green (G)).
4. Press the OK key and memorize the setting value.
1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at
the respective values.
AV-29RF6
23