Service manual

22
22-1
22-2
21FL91
HIGH VOLTAGE
– STEP RANGE –
–
AFTER ALL ADJUSTMENT FINISHED. US 4 CH LION HEAD (MONOSCOPE PATTERN) AC 220V, RF INPUT CRT ANODE VOLTAGE
SET THE USER CONTROL TO SHIPMENT SETTING POSITION. PUSH ON Y-MUTE BY R/C CONFIRM THE VOLTAGE OF CRT ANODE BY HIGH VOLTAGE METER AND MAKE SURE THE READING IS AS BELOW.
[CAUTION POINT] USE ELECTROSTATIC HI-VOLTAGE METER AND FOLLOW THE UL/ DHHS STANDARD TO MAKE CORRECTION AND CONTROL.
ADJUSTMENT ITEM ADJUSTMENT POSITION CONTROL PRE-ADJUST REQUIREMENT CONTENT INPUT CONDITION OUTPUTΩ
ADJUSTMENT PROCEDURE
HIGH VOLTAGE
BELOW 30kV
ADJUSTMENT ITEM ADJUSTMENT POSITION CONTROL PRE-ADJUST REQUIREMENT CONTENT INPUT CONDITION OUTPUT
ADJUSTMENT PROCEDURE
1) SET THE SOUND VOLUME CONTROL MORE THAN 1. 2) ADJUST BUS DATA OF M01 UNTIL THE VOLTAGE OF 39 PIN BE-
COME AS SPECIFIED BELOW.
MS LEVEL ADJUSTMENT
M01 STEP RANGE 0~15
I
2
C BUS CONTROL
OPTION SET UP, BUS SET UP, VCO ADJ, RF-AGC MONORAL SIGNAL (400HZ 100% MODULATION) AC 220V, RF INPUT
IC 3001 39 PIN
[CHECKING SPEC] 490 ± 10mVrms (CHECKING SPEC :490 ± 20mVrms)