JVC PD-42V31BJE Serviceanleitung Seite 49

Measuring
Item
instrument
WHITE Remote control
BALANCE unit
(HIGH LIGHT)
Signal generator
OSD OFFSET Remote control
unit
Signal generator
OSD-G
Adjust so that background in this part is in the
same color as its surroundings.
Test point Adjustment part
[2. VC]
S13: R GAIN
S15: G GAIN
S17: B GAIN
[4.DD/CM]
OSD-G
(OSD green offset)
OSD-B
(OSD blue offset)
OSD-R
(OSD red offset)
XXXX
Fig.13
Description
(1) Receive a PAL 75% all-white signal.
(2) Set colour temperature to "NORMAL."
(3) Select "2. VC" from the SERVICE MENU.
(4) Fix one of < S13 > (R GAIN), < S15 > (G GAIN), or < S17 >
(B GAIN). Then, lower the other two that are not fixed so
that the all-white screen is equally white throughout.
NOTE:
Set one or more of < S13 >, < S15 >, and < S17 > to
255.
(5) Check that white balance is properly tracked from low
light to high light.
If the white balance tracking is deviated, adjust to
correct it.
(6) Press the [OK] key to save the value.
(1) Input a picture whose signal (synchronization state)
is stable.
(2) Select "4. DD/CM" from the SERVICE MENU.
(3) Select < OSD-G > (OSD green offset). If you select
< OSD-G >, then the screen turns to OSD adjustment
mode. (See Fig.13)
(4) Adjust < OSD-G >, < OSD-B > (OSD blue offset), and
< OSD-R > (OSD red offset) so that OSD background
is in the same colour as its surroundings.
When the background is in green, fix < OSD-G > and
adjust the other two.
When the background is in blue, fix < OSD-B > and
adjust the other two.
When the background is in red, fix < OSD-R > and
adjust the other two.
(5) Press the [OK] or [MENU] key to save the value.
(6) Check that there is no noise such as horizontal noise.
(7) If noise is detected, lower < OSD-G >, < OSD-B >, and
< OSD-R > by one level so that no noise is detected.
(No.YA013) 1-49