JVC AV32X10EUS Service Manual page 24

AV32X10EUS
AV28X10EUS
AV28X10EKS
AV28X10EIS
Measuring
Item
instrument
Adjustment Remote
of control unit
SUB HUEⅠ Ⅰ Ⅰ Ⅰ
Adjustment Signal
of generator
SUB HUEⅡ Ⅱ Ⅱ Ⅱ
Oscilloscope
Remote
control unit
W
Cy Mg B
Adjustment Signal
of VCO generator
for colour
decoder Remote
control unit
24
Test point Adjustment part
8.HUE
NTSC 3.58 HUE
NTSC 4.43 HUE
TP-47B 8.HUE
TP-E(# # # # )
[CRT
SOCKET
NTSC 3.58 HUE
PWB]
(B)
(-)
0
NTSC 4.43 HUE
(+)
10. VCO
[Method of adjustment without measuring instrument]
[NTSC 3.58 HUE] ･････････････････ (NTSC only)
1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field
colour bar with 75% white) from the EXT terminal.
2. Select 2.V/C from the SERVICE MENU.
3. Select 8.HUE with the FUNCTION UP/DOWN key.
4. Set the initial setting value of NTSC 3.58 HUE with the
FUNCTION -/+ key.
5. If you cannot get the best hue with the initial setting value,
make fine adjustment until you get the best hue.
6. Press the MENU key and memorize the set value.
[NTSC 4.43 HUE]
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 HUE]
1. Input a NTSC 3.58MHz COMPOSITE VIDEO signal (full field
colour bar with 75% white) from the EXT terminal.
2. Select 2.V/C from the SERVICE MENU.
3. Select 8.HUE with the FUNCTION UP/DOWN key.
4. Set the initial setting value of NTSC 3.58 HUE with the
FUNCTION - or + key.
5. Connect the oscilloscope between TP-47B and TP-E
6. Adjust NTSC 3.58 HUE to bring the value of (B) in the
illustration to -3V (voltage difference between white (W) and
magenta(Mg)).
7. Press the MENU key and memorize the setting value
[NTSC 4.43 HUE]
1. When NTSC 3.58 is set, NTSC 4.43 will be automatically set at
the respective values.
1. Input a PAL full field colour bar signal (75% white) from exit
terminal.
2. Select 2. V/C from the SERVICE MENU.
3. Select 10. VCO adjustment with the FUNCTION UP/DOWN
key.
4. Press the OK key.
*
When the OK key is pressed, VCO for colour decoder will be
automatically set at the respective values.
No. 51780
Description