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JVC AV-48P775/H Service Manual page 57

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Measuring
Item
instrument
SUB COLOR /
Signal
SUB TINT /
generator
B-Y GAIN
adjustment (2)
Oscilloscope
Remote
control unit
W
Setting item
A
STANDARD
Signal
S01
S02
(W-R)
(W-Y)
NTSC
+40
+12
480i
+30
+12
480p
+36
+16
1080i
+24
+3
Test point
Adjustment part
TP-R
[1.PICTURE/SOUND]
[R CRT
S01 : COLOR
SOCKET PWB]
S02 : TINT
TP-B
S07 : B-Y
[B CRT
SOCKET PWB]
TP-E (GND)
(-)
0
(+)
Y
(W-Y)
R
(W-R)
Fig.1
(-)
0
(+)
W
(W-B)
B
Fig.2
Setting value [V]
B
C
THEATER
STANDARD
S01
S02
S07
(W-R)
(W-Y)
(W-B)
+26
+4
+18
+12
+3
-1
+16
+4
-4
+17
+5
-8
Table
[ Method of adjustment with measuring instrument ]
(1) Receive NTSC color bar signal (include 75% white).
(2) Select STANDARD mode with [VIDEO STATUS]
key.
(3) Connect the oscilloscope to TP-R.
(4) Select 1.PICTURE/SOUND from SERVICE MENU.
(5) Select < S01 > (COLOR) and < S02 > (TINT).
(6) Adjust < S01 > and < S02 > to be following setting
value A[V]. (Refer to the table)
(7) Press [MUTING] key to memorize the set values.
(8) Select THEATER mode with [VIDEO STATUS] key.
(9) Adjust < S01 > and < S02 > to be following setting
value B[V] same as above. (Refer to the table)
(10) Press [MUTING] key to memorize the set values.
(11) Select STANDARD mode with [VIDEO STATUS]
key.
(12) Connect the oscilloscope to TP-B.
(13) Adjust < S07 > (B-Y) to be setting value C[V]. (Refer
to the table)
(14) Press [MUTING] key to memorize the set values.
(15) Select THEATER mode with [VIDEO STATUS] key.
(16) Adjust < S07 > to be setting value D[V]. (Refer to the
table)
(17) Press [MUTING] key to memorize the set values.
(18) Confirm that LOW-LIGHT is not different after
adjusting. If it is green or magenta, to adjust LOW-
LIGHT again. If adjust again, to set offset value
again.
(19) Input 480i component color bar from COMPONENT
VIDEO terminal.
(20) Repeat steps 2 to 17 above.
(21) Input 480p component color bar from COMPONENT
VIDEO terminal.
(22) Repeat steps 2 to 17 above.
(23) Input
1080i
COMPONENT VIDEO terminal.
(24) Repeat steps 2 to 17 above.
D
THEATER
S07
(W-B)
+14
-2
-4
-5
Description
component
color
bar
(No.YA173)1-57
from

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