JVC AV-20420, AV-20421, Руководство по обслуживанию

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AV-20420
AV-20421
(No.52111)1-21
3.7.4 WHITE BALANCE
Item
Measuring
instrument
Test point Adjustment part Description
WHITE
BALANCE
(Low Light) Signal
generator
Remote
control unit
[PICTURE]
<1. BRIGHT>
[LOW LIGHT]
<R CUTOFF>
<G CUTOFF>
<B CUTOFF>
SCREEN VR
[In HVT]
(1) Receive the black-and-white signal (color off).
(2) Select <1. BRIGHT> of the PICTURE mode.
(3) Set the initial setting value of the <1 BRIGHT>.
(4) Select the [LOW LIGHT] mode from SERVICE
MENU.
(5) Set the initial setting value of <R CUTOFF>, <G
CUTOFF> and <B CUTOFF> with from [4] to [9]
keys.
(6) Show the single horizontal line by pressing the [1]
key.
(7) Turn the SCREEN VR all the way to the left.
(8) Turn the SCREEN VR gradually to the right from the
left until either one of the red, blue or green colors
appears faintly.
(9) Adjust the two colors which did not appear until the
single horizontal line that is displayed becomes
white using the [4] to [9] keys.
(10) Turn the SCREEN VR to where the single horizontal
line glows faintly.
(11) Press the [2] key to return to the regular screen.
(12) Press the [3] key to exit from the WHITE BALANCE
mode.
BRIGHT
EXIT BY
BRIGHT
EXIT
***
***
***
***
BRIGHT
R CUTOFF
G CUTOFF
B CUTOFF
1
7
4
100+ 100+
3
9
6
2
8
5
B CUTOFF
EXIT
G CUTOFF
G CUTOFF
R CUTOFF
R CUTOFF
H LINE ON
H LINE OFF
B CUTOFF
Setting item
R CUTOFF
Initial setting value
20
G CUTOFF 20
B CUTOFF 20