JVC AV-20420/SA Service Manual page 22

AV-20420
AV-20421
Measuring
Item
instrument
WHITE Signal
BALANCE generator
(High Light)
Remote
control unit
G DRIVE
G DRIVE
Setting item
G DRIVE
B DRIVE
3.7.5 VIDEO CIRCUIT
Measuring
Item
instrument
SUB Remote
BRIGHT control unit
Setting item
1. BRIGHT
1-22 (No.52111)
Test point Adjustment part
[HIGH LIGHT]
<G DRIVE>
<B DRIVE>
G DRIVE B DRIVE
HIGH LIGHT
***
***
EXIT BY
EXIT
1 2 3
4 5 6
7 8 9
100+ 100+
RETURN+ RETURN+
Initial setting value
128
128
Test point Adjustment part
[PICTURE]
<1. BRIGHT>
Initial setting value
64
(1) Receive the black-and-white signal (color off).
(2) Select the HIGH LIGHT mode of the SERVICE
MENU.
(3) Set the initial setting value of <G DRIVE> and <B
DRIVE> with the [5], [6], [8] and [9] keys.
(4) Adjust the screen until it becomes white using the
[5], [6], [8] and [9] keys.
(5) Press the [3] key to exit from the WHITE BALANCE
mode.
EXIT
B DRIVE
B DRIVE
(1) Receive the broadcast.
(2) Select <1. BRIGHT> of the PICTURE mode.
(3) Set the initial setting value of the <1 BRIGHT>.
(4) If the brightness is not best with the initial setting
value, make fine adjustment of the <1 BRIGHT> until
you get the optimum brightness.
Description
Description