No. 52012

HV-29LP
Z
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 P WB ]
1. RGB BLK 1. Receive any broadc ast .
2. Press the Z OOM key an d sel ect t he FUL L mo de.
3. Select 2. V/C from the S ERVICE MENU.
4. Select 1. RGB BLK with f unction UP / DOWN key.
5. Pr ess the functi on ( ) k ey to f ind the cut off screen ( Black
screen).
6. Connect a DC vol tmet er to T P-9 1(B1) a nd T P-E( #).
7. Make s ure t hat th e volt age i s DC 139.9 ±2.0V.
8. Press the func tion ( ) key to retu rn to serv ice m enu.
Check of High
Voltage
Signal
Generator
DC volunteer
Remote
Control unit
CRT anode
Chassis GND
1. RGB BLK 1. Receive any broadc ast .
2. Press the Z OOM key an d sel ect t he FUL L mo de.
3. Select 2. V/C from the S ERVICE MENU.
4. Select 1. RGB BLK with f unction UP / DOWN key.
5. Pr ess the functi on ( ) k ey to f ind the cut off screen ( Black
screen).
6. Connect a DC voltmeter to CRT ANODE and chassis GND.
7. Make s ure t hat th e volt age i s DC 31.5 kV .
8. Press the func tion ( ) key to retu rn to serv ice m enu.
* Remove th e probe befor e removi ng the earth cli p.
Check of VCO Remote
control unit
1. VCO
2. ATT ON/OFF
" Und er norm al c ondi tions, no ad jus tme nt is r equir ed.
" Confirmation adjustment.
1. Select 1.IF from t he SERVICE MENU.
2. Then select 1.VCO from the IF SERVICE MENU.
3. Receive an y bro adc ast.
4. Check th e MAIN arro w ( ) position b etween the ABOVE
REF. and BELOW REF.
5. Press the MENU (OK) key and receive any broadcast with PIP
Button.
6. Check the SUB ar row ( ) posi tion betw een the ABOV E REF
and BELOW RE F.
* The arrow ( ) position means AFC voltage level.
* 2. ATT ON/OFF : Generall y Electric Field : OFF
: Strong Elec tric Fie ld : ON
* Change the M AIN and SUB by MENU/ OK ke y .
+1kV
-1.5kV
TOO HI GH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
DISP : EXIT
VCO(CW)
****
MHz
MAIN SUB
1. VCO
2. ATT O N/OF F
DISP : EXIT
IF SERVICE MENU
1-2 : SELEC T