No.52005
AV-27F703
AV-27F713
AV-27F803
26
ADJUSTMENT OF VIDEO / CHROMA CIRCUIT
Item
Measuring
instrument
Test point
Ad justment part
Description
WHITE
BALANCE
(Low Light)
adjustment
Signal
generator
S01:BRIGHT
S11:R CUTOFF
S12:G CUTOFF
S13:B CUTOFF
SCREEN VR
[ in HVT]
1. Receive the blac k and white signal ( color off ).
2. Select
the
LOW LIGHT
mode from the SERVICE MENU.
3. Confirm the initial setting value of
R CUTOFF
,
G CUTOFF
,
B
CUT OFF
and
BRIGHT
.
0. Display a single horizontal line by pressing the
①
①
①
①
key of the
remote control unit.
5. Turn the screen VR all the way to the left.
6. Turn the screen VR gradually to the right from the left until
either one of the red, blue or green colors appears faintly.
7. Adjust the two colors which did not appear until the single
horizontal line that is displayed bec omes
white
using the
④
④
④
④
to
⑨
⑨
⑨
⑨
keys of the remote c ontrol unit.
8. Turn the screen VR until the single horizontal line is displayed
faintly.
9. Press the
②
②
②
②
key to cancel the single horizontal line mode.
10. Adjust the BRIGHT lev el to become the blac k c omponent
shines white slightly.
11. Confirm that whether the color ingredient of R, G, or B is visible
to the black component, which shines white slightly
12. When the color ingredient can be s een, two colors other than a
vis ible c olor are adjusted, and it is made to look white.
13. Return the value of BRIGHT to initial s etting value.
●
The
③
③
③
③
EXIT key is the cancel key for the WHIT E BALANCE.
[LOW LIGHT]
BRIGHT
***
*** *** ***
RE M OTE CONT ROL UNIT
H.LINE ON
EXIT
H.LINE OFF
R CUTOFF
B CUTOFF
G CUTOFF
R CUTOFF
B CUTOFF
G CUTOFF
1
4
7
2
5
8
3
6
9
No .
Setting item
Variable
range
Initial setting
value
S11
R CUT OFF
0
～
255
30
S12
G CUT OFF
0
～
255
30
S13
B CUT OFF
0
～
255
30
S01
BRIGHT
0
～
127
64
[H.LINE SCREEN ]
