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JVC AV-27D104 Service Manual page 20

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AV-27D104 AV-27D304
AV-27430 AV-27432
3.6.6 VIDEO CIRCUIT
Measuring
Item
instrument
WHITE
Signal
BALANCE
generator
(LOW LIGHT)
Remote
control unit
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
No.
Setting item
S11
R CUT OFF
S12
G CUT OFF
S13
B CUT OFF
S01
BRIGHT
1-20 (No.52102)
Test point
Adjustment part
[7.LOW LIGHT]
[1.V/C(S)]
S11 : R CUTOFF
S12 : G CUTOFF
S13 : B CUTOFF
S01 : BRIGHT
SCREEN VR
[in HVT]
R CUTOFF
H LINE OFF
H LINE ON
G CUTOFF
EXIT
B CUTOFF
B CUTOFF
G CUTOFF
R CUTOFF
Variable
Initial setting
range
value
0 255
0 255
0 255
0 127
(1) Receive the black-and-white signal (color off).
(2) Select the 7.LOW LIGHT in the SERVICE MENU.
(3) Set the initial setting value of <S11>(R CUTOFF),
<S12>(G CUTOFF), <S13>(B CUTOFF) and
<S01>(BRIGHT).
(4) Display a single horizontal line by pressing the [1]
key.
(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 color
appears faintly.
(7) Adjust the two colors which did not appear until the
single horizontal line that is displayed becomes
white using the [4] to [9] keys.
(8) Turn the SCREEN VR until the single horizontal line
is displayed faintly.
(9) Press the [2] key to cancel the single horizontal line
mode.
(10) Adjust the <S01> level to become the black
component shines white slightly by [VOLUME] key.
(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 seen, two colors
other than a visible color is adjusted, and it is made
to look white.
(13) Return the value of <S01> to initial setting value.
If the [3] key is pressed, it can escape from WHITE
BALANCE adjustment mode.
30
30
30
64
Description

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