JVC AV-48P575 Series Service Manual page 57

Measuring
Item
instrument
SUB BRIGHT Signal
adjustment generator
Remote
control unit
Signal
Item
NTSC
STANDARD
S03
118
SUB Signal
CONTRAST generator
adjustment (1)
Remote
control unit
Signal
Item
NTSC
STANDARD
S04
054
SUB Signal
CONTRAST generator
adjustment (2)
Oscilloscope
Remote
control unit
SETTING VOLTAGE [V
Signal
NTSC
Video Status
STANDARD
THEATER
1-56 (No.YA091)
Test point Adjustment part
[1.PICTURE/SOUND]
S03: BRIGHT
Setting value
480i
THEATER STANDARD THEATER STANDARD
118
118 118 118
Table-1
[1.PICTURE/SOUND]
S04: CONTRAST
Setting value
480i
THEATER STANDARD THEATER STANDARD
054
054 054 054
Table-2
TP-G [1.PICTURE/SOUND]
[G CRT S04: CONTRAST
SOCKET PWB]
p-p ]
( )
480i
68 80
60 65
Table-3
(1) Receive NTSC signal (include 0% or -2% black).
(2) Select STANDARD mode with [VIDEO STATUS] key.
(3) Set the COLOR TEMP is LOW mode.
(4) Select 1.PICTURE/SOUND from SERVICE MENU.
(5) Select < S03 > (BRIGHT).
(6) Set the initial setting value. (See Table 1)
(7) If the brightness is not the best with the initial setting
value, make fine adjustment until you get the best
brightness.
1080i
(8) Press [MUTING] key to memorize the set values.
THEATER
(9) Select THEATER mode with [VIDEO STATUS] key.
118
(10) Repeat steps 4 ~ 8 above.
(11) Input 480i component signal (include 0% or -2%
black) from COMPONENT VIDEO terminal.
(12) Repeat steps 2 ~ 10 above.
(13) Input 1080i component signal (include 0% or -2%
black) from COMPONENT VIDEO terminal.
(14) Repeat steps 2 ~ 10 above.
[ Method of adjustment without measuring instrument ]
(1) Receive NTSC glay scale signal.
(2) Select STANDARD mode with [VIDEO STATUS]
key.
(3) Set the COLOR TEMP is LOW mode.
(4) Select 1.PICTURE/SOUND from SERVICE MENU.
(5) Select < S04 > (CONTRAST).
(6) Set the initial setting value. (See Table 2)
(7) If the contrast is not the best with the initial setting
1080i
value, make fine adjustment of the < S04 > until you
THEATER
get the optimum contrast.
054
(8) Press [MUTING] key to memorize the set values.
(9) Select THEATER mode with [VIDEO STATUS] key.
(10) Repeat steps 4 ~ 8 above.
(11) Input 480i component black & white signal from
COMPONENT VIDEO terminal.
(12) Repeat steps 2 ~ 10 above.
(13) Receive 1080i component black & white signal from
COMPONENT VIDEO terminal.
(14) Repeat steps 2 ~ 10 above.
[ Method of adjustment with measuring instrument ]
(1) Receive NTSC gray scale signal (include -3%).
(2) Select STANDARD mode with [VIDEO STATUS] key.
(3) Select FULL mode with [ASPECT] key.
(4) Set the COLOR TEMP is LOW mode.
(5) Connect the oscilloscope to TP-G.
(6) Select 1.PICTURE/SOUND from SERVICE MENU.
(7) Select < S04 > (CONTRAST).
(8) Adjust < S04 > so that the -3% signal portion and the
100% signal portion of both sides may become the
1080i
follow table voltage.
(9) Press [MUTING] key to memorize the set value.
(10) Select THEATER mode with [VIDEO STATUS] key.
80
(11) Repeat steps 8 ~ 9 above.
60
(12) Receive 480i component gray scale signal (include
-3%).
(13) Repeat steps 2 ~ 11 above.
(14) Set 1080i component gray scale signal (include -3%).
(15) Repeat steps 2 ~ 11 above.
Description