No. 51809
HV-L34PRO
20
ADJUSTMENT
CHECKING ITEM
Item
Measuring
instrument
Test point
Adjustment part
Description
Check of B1
Power Supply
Signal
Generator
DC voltmeter
Remote
Control unit
TP-91(B1)
TP-E(
#
#
#
#
)
[X connector
on POWER
DEF PWB]
1. RGB BLK
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 ( ) key to find the cut off screen (Black
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 ( ) key to return to service menu.
Check of High
Voltage
Signal
Generator
DC volunteer
Remote
Control unit
CRT anode
Chassis GND
1. RGB BLK
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 ( ) key to find the cut off screen (Black
screen).
6. Connect a DC voltmeter to CRT ANODE and chassis GND.
7. Make sure that the voltage is DC 32.0kV .
8. Press the function ( ) key to return to service menu.
*
Remove the probe before removing the earth clip.
Check of VCO
Remote
control unit
1. VCO
2. ATT ON/OFF
"
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 MAIN arrow ( ) position between the ABOVE REF.
and BELOW REF.
5. Press the MENU (OK) key and receive any broadcast with PIP
Button.
6. Check the SUB arrow ( ) position between the ABOVE REF
and BELOW REF.
*
The arrow ( ) position means AFC voltage level.
*
2. ATT ON/OFF
: Generally Electric Field :
OFF
: Strong Electric Field :
ON
*
Change the MAIN and SUB by MENU/OK key .
+1kV
-1.5kV
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
DISP : EXIT
VCO(CW )
****
MHz
MAIN
SUB
1. VCO
2. ATT ON/OFF
DISP : EXIT
IF SERVICE MENU
1-2 : SELECT
