JVC AV-28X37SUE Service Manual page 23

Measuring
Item
instrument
SUB COLOUR ll Signal
adjustment generator
Oscilloscope
Remote
control unit
Y
W
[PAL COLOUR VOLTAGE SETTING]
VOLTAGE (W-B)
[SECAM COLOUR VOLTAGE SETTING]
VOLTAGE (W-B)
[NTSC COLOUR VOLTAGE SETTING]
VOLTAGE (W-B)
Test point Adjustment part
TP-47B [2.V/C]
TP-E( ) 10.COLOUR
[CRT (PAL/SECAM/NTSC)
SOCKET
PWB ]
G
R
(A)
(-)
0V
C
B
(+)
M
AV-28X37SUE
AV-28X37HIE
AV-28H35SUE
AV-28X37HKE
AV-28H35BUE
AV-28X35HUE
AV-28X35HKE
+11V
AV-28X37SUE
AV-28X37HIE
AV-28H35SUE
AV-28X37HKE
AV-28H35BUE
AV-28X35HUE
AV-28X35HKE
+6V
All model
+1V
Description
[Method of adjustment using measuring instrument]
PAL COLOUR:
(1) Receive a PAL full field colour bar signal (75%
white).
(2) Select 2.V/C.
(3) Select 10.COLOUR.
(4) Set the initial setting value of PAL COLOUR.
(5) Connect the oscilloscope between TP-47B and TP-
E( ).
(6) Adjust PAL COLOUR and bring the value of (A) in
the illustration to the values as shown given billow
(Voltage difference between white (W) and blue (B)).
(7) Press the [MENU] key and memorize the setting
value.
SECAM COLOUR:
(1) Receive a SECAM full field colour bar signal (75%
white).
(2) Set the initial setting value of SECAM COLOUR.
(3) Adjust SECAM COLOUR and bring the value of (A)
in the illustration to the values as shown given billow
(Voltage difference between white (W) and blue (B)).
(4) Press the [MENU] key and memorize the setting
value.
NTSC 3.58 COLOUR:
(1) Input a NTSC 3.58MHz COMPOSITE VIDEO signal
(full field colour bar with 75% white) from the EXT
terminal.
(2) Set the initial setting value of NTSC 3.58 COLOUR.
(3) Adjust NTSC 3.58 COLOUR and bring the value of
(A) in the illustration to the values as shown given
billow (Voltage difference between white (W) and
blue (B)).
(4) Press the [MENU] key and memorize the setting
value.
NTSC 4.43 COLOUR:
(1) When NTSC 3.58 COLOUR set, NTSC 4.43
COLOUR will automatically set.
AV-28X37SUE AV-28X37HKE
AV-28X35HKE AV-28X37HIE
AV-28H35SUE AV-28H35BUE
AV-28X35HUE
(No.52106)1-23