JVC AV-32WL1EI, Service Manual

Page: 22 / 81

No. 51733
AV-32WL1EU
AV-32WL1EI
AV-32WL1EK
22
IF CIRCUIT Adjustment
Item
Measuring
instrument
Test point Adjustment part Description
Adjustment of
VCO Remote
control unit P.CW TRANSF.
P.L_VL CW TRANSF.
[On IF PWB]
"
Under normal conditions, it is no adjustment required.
"
It must not adjust without signal.
1. Select 1.IF from the SERVICE MENU.
2. Press 1 key and select 1.VCO.
3. Receive any broadcast with the remote control unit.
4. Turn the core of P. CW TRANSF. until the arrow mark (
←
) on
the screen points TOO HIGH (Step 1).
5. Turn the core of P. CW TRANSF. until the arrow mark (
←
) on
the screen points TOO LOW (Step 2).
6. Then slowly turn back the core of P. CW TRANSF. until the
arrow mark (
←
) on the screen points JUST REF (Step 3).
7. Press the INFORMATION key three times to return to normal
screen.
8. Perform CHANNEL PRESET again, and make sure that each
broadcast is being received properly.
[AV-32WL1EU/AV-32WL1EI]
9. Press the FUNCTION UP/DOWN key on the remote control
unit, and receive the SECAM L broadcast.
10. Turn the core of P.L_VL CW TRANSF. to adjust as same steps
as 4-6 above.
Adjustment of
DELAY POINT Remote
control unit 2. DELAY POINT
(AGC TAKE-OVER)
1. Receive a black and white signal (colour off).
2. Select 1.IF from the SERVICE MENU.
3. Select 2.DELAY POINT by pressing the 2 key on the remote
control unit.
4. Adjust the FUNCTION LEFT/RIGHT key until video noise
disappears.
5. Press the OK key and memorize the set value.
6. Turn to other channels and make sure that there are no
irregularities.
VCO(CW)=MAIN
***.**
MHz
MAIN
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
: EXIT
fv
Setting item
(Adjustment item)
Variable
range
Initial setting
value
DELAY POINT
(AGC TAKE-OVER)
0
～
63 35
Screen display
Step 1 Step 2 Step 3
TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW