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

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AV-20420
AV-20421
(No.52111)1-23
SUB
CONTRAST Remote
control unit [PICTURE]
<2. PICTURE> (1) Receive the broadcast.
(2) Select <2. PICTURE> of the PICTURE mode.
(3) Set the initial setting value of the <2. PICTURE>.
(4) If the contrast is not best with the initial setting value,
make fine adjustment of the <2. PICTURE> until you
get the optimum contrast.
SUB COLOR Signal
generator
Oscilloscope
Remote
control unit
TP-R
TP-E
[CRT SOCKET
PWB] [PICTURE]
<6. COLOR> [ Method of adjustment without measuring instrument ]
(1) Receive the broadcast.
(2) Select <6. COLOR> of the PICTURE mode.
(3) Set the initial setting value of the <6. COLOR>.
(4) If the color is not best with the initial setting value,
make fine adjustment of the <6. COLOR> until you
get the optimum color.
[ Method of adjustment using measuring instrument ]
(1) Receive the full field color bar signal (75% white).
(2) Select <6. COLOR> of the PICTURE mode.
(3) Set the initial setting value of the <6. COLOR>.
(4) Connect the oscilloscope between TP-R and TP-E.
(5) Adjust <6. COLOR> and bring the value of (A) in the
illustration to +16V.
Item
Measuring
instrument
Test point Adjustment part Description
Setting item
2. PICTURE
Initial setting value
95
Setting item
6. COLOR
Initial setting value
48
(-)
(+)
V
(W-R)
C G
B
W
(75%)
Y M R
(A)
0V