JVC PD-35DX Service Manual page 40

PD-35DX
3.8.2 RECEIVER UNIT
Measuring
Item
instrument
VCO (AFC) Remote control
check unit
Signal generator
IF SERVICE MENU
1. VCO
2. ATT
1-2 : SELECT
VCO(CW)
MAIN
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
SUB Remote control
BRIGHTNESS unit
Signal generator
0% black part
Black and white pattern signal
<NG>
SUB Remote control
CONTRAST unit
Signal generator
White part
Black and white pattern signal
<NG>
1-40 (No.52089)
Test point Adjustment part
[1.IF]
i : EXIT
210.25MHz
SUB
The arrow position
mean AFC voltage level.
i : EXIT
Fig.3
[2.V/C]
9. BRIGHT
(Bright)
Set the 0% black part
to be brightest.
Black and white pattern signal
<OK>
Fig.4
[2. V/C]
10. CONT
(Contrast)
White part to be white.
Black and white pattern signal
<OK>
Fig.5
Description
(1) Receive a PAL colour bar signal.
(2) Select "1. IF" from the SERVICE MENU.
(3) Select "1. VCO."
(4) Make sure that an arrow of "MAIN" is in the position
between "ABOVE REF." and "BELOW REF."on the
screen
(5) Make sure that an arrow of "SUB" is in the position
between "ABOVE REF." and "BELOW REF."on the
screen.
(1) Receive a PAL black and white pattern signal
(including 0% black signal).
(2) Select "2. V/C" from the SERVICE MENU.
(3) Adjust <9. BRIGHT> (Bright) to set the 0% black
part to be the brightest.
(4) Press the [OK] key to save the value.
(1) Receive a PAL black and white pattern signal
(colour off).
(2) Select "2. V/C" from the SERVICE MENU.
(3) Adjust <10. CONT> (Contrast) to set the white part
to be white.
(4) Press the [OK] key to save the value.