JVC AV32L2EUGR Service Manual page 17

ADJUSTMENT
CHECKING ITEMS
Measuring
Item
instrument
Check of B1 Signal
Power Supply Generator
DC voltmeter
Remote
Control unit
Check of High Signal
Voltage Generator
DC volunteer
Remote
Control unit
Check of VCO Remote
control unit
IF SERVICE MENU
1. VCO
2. ATT ON/OFF
1-2 : SELECT
VCO(CW)
MAIN
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
Test point Adjustment part
TP-91(B1) 1. RGB BLK
TP-E(# # # # )
[X connector
on POWER
DEF PWB]
CRT anode 1. RGB BLK
Chassis GND
1. VCO
(Do not move)
i : EXIT
****MHz
i : EXIT
1. Receive any broadcast.
2. Press the ZOOM key and select the FULL mode.
3. Select 2. V/C from the SERVICE MENU.
4. Select 1. RGB BLK with function UP / DOWN key.
5. Press the function +(
screen).
6. Connect a DC voltmeter to TP-91(B1) and TP-E( # ).
7. Make sure that the voltage is DC139.9 ± 2.0V.
8. Press the function – (
1. Receive any broadcast.
2. Press the ZOOM key and select the FULL mode.
3. Select 2. V/C from the SERVICE MENU.
4. Select 1. RGB BLK with function UP / DOWN key.
5. Press the function +(
screen).
6. Connect a DC voltmeter to CRT ANODE and chassis GND.
7. Make sure that the voltage is DC 31.0kV
8. Press the function – (
" 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. Check the arrow (
BELOW REF.
No. 51817
AV32L2EUGR
AV32L2EUBL
AV32L2EUGY
Description
) key to find the cut off screen (Black
) key to return to service menu.
) key to find the cut off screen (Black
+1kV
.
-1.5kV
) key to return to service menu.
) position between the ABOVE REF. and
17