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JVC AV-32WP2EN Service Manual page 17

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AV-32WP2EN
AV-32WP2EP
IF CIRCUIT ADJUSTMENT
Measuring | Test point
Adjustment part
Description
instrument
Adjustment of | Remote
P. CW TRANSF.
Do not make any adjustment unless the adjustment is out of
vco
control unit
(T050)
way and you cannot get correct PICTURE.
(MAIN)
P.L-VL CW TRIM C
. Select 1.1F from the SERVICE MENU.
(C052)
. Press 1 key and select 1.VCO.
[In IF PWB]
. Select a receivable broadcast channel with the CHANNEL key.
. Turn the core of P. CW
TRANSF.
until the colour of the
characters TOO HIGH displayed on the screen changes from
VCO(CW) sek.
MHZ
"4
bus to_Yeflow. (Step 1)
TOOHIGH
. Turn the core of P. CW
TRANSF.
until the colour of the
ABOVE REFERENCE
characters TOO LOW changes from blue to Yellow. (Step 2)
Scag estes
ai
|
. Then slowly turn back the core of P. CW TRANSF.
until the
TOO LOW
colour of the characters JUST REFFERENCE
changes from
@ =x
blue to Yellow. (Step 3)
. Inthe district SECAM L broadcast channel with the CHANNEL
key and adjust the P.L-VL CW TRIM. C in same manner as for
above step. And necessary, readjust P. CW. TRANSF.
. Press the INFORMATION
key three times to return to normal
screen.
_
fe
. Perform CHANNEL
PRESET again, and make sure that each
Screen display
broadcast is being received properly.
TOO HIGH
ABOVE REFERENCE
a
JUST REFERENCE
BELOW REFERENCE | Blue
TOO LOW
Adjustment of | Remote
DELAY POINT
. Receive a black and white signal (colour off).
DELAY POINT | control unit
(AGC TAKE-OVER)
. Select 1.1F from the SERVICE MENU.
. Select 2.DELAY POINT by pressing the 2 key on the remote
control.
. Adjust the FUNCTION - or + key until video noise disappears.
Setting item
Variable range
Initial setting
. Press the MENU key and memorize the set value.
(Adjustment item)
value
. Turn to other channels
and
make
sure that there are
no
irregularities.
0~63
(AGC TAKE-OVER)
et
Adjustment of | Remote
L, V LEVEL
.
Receive a coior bar signal.
L,V LEVEL
control unit
(SECAM-L,75% white)
(EP MODEL
Oscilloscope
. Connect the oscilloscope to EXT-1 PIN 19.
ONLY)
. Select 1.IF from the service Menu.
.
Select 3.L.V LEVEL
by pressing the 3 key on the remote
control.
.
Turn to other channels and make
sure that there are no
irregularities.
No.51237
17

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