No. 51818
AV29A10EUS
22
Item
Measuring
instrument
Test point Adjustment part Description
Adjustment of
SCREEN VR
Signal
generator
Remote
control unit
SCREEN VR
(Within FBT)
1. Input the whole black signal.
2. Press the ZOOM key and select the REGULAR mode.
3. Select 2. V/C from the SERVICE MENU.
4. Turn the SCREEN VR clockwise from the full counterclockwise
position, and stop it at the point where “CLOW” status (marked
in figure) changes from “1”
5
“0”
5
“1” (which is indicated at
the 3rd
column from the right).
5. Then turn the SCREEN VR to the counterclockwise, and stop
where “CLOW” status change “1”
5
“0”.
IF CIRCUIT CHECKING
Item
Measuring
instrument
Test point Adjustment part Description
Checking of
VCO
Remote
control unit
1.VCO
"
Under normal conditions, no adjustment is required.
Confirmation adjustment.
1. Select 1.IF from the SERVICE MENU.
2. Then select 1.VCO from the IF SERVICE MENU.
3. Receive any broadcast.
4. In the VCO adjustment screen, the yellow allows point to the
characters. Check the allow position where pointed to the
character from “ABOVE REF” to “BELLOW REF”.
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
i : EXIT
VCO(CW )
****
MHz
MAIN
1. VCO
2. ATT ON/OFF
i : EXIT
IF SERVICE MENU
1-2 : SELECT
Do not select
this mode
V/C
1. RGB BLK
00
CLOW status
- / +
: STORE i : EXIT
OK
0 0 0 0 0 1 0 0
PAL
Screen VR adjustment
IF MENU SCREEN
IF MENU SCREEN
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