JVC AV-48P575 Series Service Manual page 56

Measuring
Item
instrument
WHITE Signal
BALANCE generator
(LOW LIGHT)
adjustment Remote
control unit
3. WHITE BALANCE
BRIGHT LEVEL
BR
DRIVE
DRV
CUTOFF
CUT
REMOTE CONTROL UNIT
TUNE
1.PICTURE/SOUND
Item No. Item name
S03 BRIGHT
S10 DRIVE R
S12 DRIVE B
S14 CUTOF R
S16 CUTOF G
S18 CUTOF B
WHITE Signal
BALANCE generator
(HIGH LIGHT)
adjustment Remote
control unit
Signal
Item
NTSC
S10 089
S12 108
REMOTE CONTROL UNIT
Test point Adjustment part
[3.WHITE BALANCE]
BR
CUT R
CUT B
R B
R G B
Setting value
RETURN+
3.WHITE BALANCE
Initial setting Initial setting
Item name
value
127 BR
085 DRV R
085 DRV B
185 CUT R
185 CUT G
185 CUT B
[1.PICTURE/SOUND]
S10: DRIVE R
S12: DRIVE B
[3.WHITE BALANCE]
DRV R
DRV B
Initial setting value
480i
052
107
DRIVE B
DRIVE R
NOTE :
Before starting the adjustment, warm up the unit for
more than 30 minutes.
(1) Receive NTSC gray scale signal (include 0% black).
(2) Select STANDARD mode with [VIDEO STATUS]
key.
(3) Set the COLOR TEMP is LOW mode.
(4) Select 3.WHITE BALANCE from SERVICE MENU.
(5) Select < BR >, < DRV R >, < DRV B >, < CUT R >,
< CUT G > and < CUT B >.
(6) Set the initial setting value.
(7) Adjust < BR > so that the LOW-LIGHT should be
visible.
(8) Adjust using [ 8 ] / [ 0 ] keys and [ 9 ] / [ RETURN + ]
keys so that a black portion may become black.
(9) Press [MUTING] key to memorize the set values.
(10) Input 480i component signal (include 0% black) from
COMPONENT VIDEO terminal.
(11) Repeat steps 5 ~ 9 above.
(12) Input 1080i component signal (include 0% black)
from COMPONENT VIDEO terminal.
(13) Repeat steps 5 ~ 9 above.
NOTE:
• 3. WHITE BALANCE < BR >, < DRV R >, < DRV B >,
< CUT R >, < CUT G > and < CUT B > are equal to 1.
PICTURE/SOUND < S03 >, < S10 >, < S12 >, < S14 >,
< S16 > and < S18 >.
• 3. WHITE BALANCE < BR >, < DRV R > and < DRV
B > are same value as 1. PICTURE/SOUND < S03 >,
< S10 > and < S12 >.
value
• 3. WHITE BALANCE < CUT R >, < CUT G > and < CUT
127
B > are same value as 1. PICTURE/SOUND < S14 >,
085
< S16 > and < S18 > plus 30.
085
• For example, 3.WHITE BALANCE < BR > value was
215
changed from 127 to 120, 1.PICTURE/SOUND < S03
215
> value was changed from 127 to 120 automatically.
215
3. WHITE BALANCE < CUT R > value was changed
from 215 to 210, 1.PICTURE/SOUND < S03 > value
was changed from 185 to 180 automatically.
(1) Receive NTSC grayscale signal (include 75%
white).
(2) Select STANDARD mode with [VIDEO STATUS] key.
(3) Set the COLOR TEMP is LOW mode.
(4) Select 1.PICTER/SOUND from SERVICE MENU.
(5) Select < S10 > (DRIVE R) and < S12 > (DRIVE B).
(6) Set the initial setting value.
(7) Select 3.WHITE BALANCE from SERVICE MENU.
(8) Adjust using [ 2 ] / [ 5 ]] keys and [ 3 ] / [ 6 ] keys so
that the natural white should be visible on 75% white.
1080i
(9) Press [MUTING] key to memorize the set value.
(10) Input 480i component grayscale signal (include 75%
057
white) from COMPONENT VIDEO terminal.
109
(11) Repeat steps 4 ~ 9 above.
(12) Input 1080i component grayscale signal (include
75% white) from COMPONENT VIDEO terminal.
(13) Repeat steps 4 ~ 9 above.
Description
(No.YA091)1-55