Service manual

24
20U-FS1
CU20FS1
24-1
24-2
SET THE USER CONTROL TO SHIPMENT POSITION.
[VOLTAGE CONFIRMATION]
CHECK THE VOLTAGE OF P603 PIN 3 AS SPECIFIED BELOW.
[OPERATION CONFIRMATION]
SUPPLY THE DC VOLTAGE TO P603 PIN 3 AND MAKE SURE THE PRO-
TECTOR IS FUNCTIONED.
HORIZONTAL OSCILATION STOP AND PICTURE DISAPPEAR.
[RECOVER INFORMATION]
PULL OUT THE AC CORD.
[CAUTION]
FROM THE RECOVER CONFIRMATION MENTIONED ABOVE, THE AC
CODE MUST BE PULLED OUT AT LEAST 4 SECOND BEFORE PLUG-
GING IN AGAIN.(IN ORDER TO MAKE SURE THE µ-COM HAS BEEN
RESET.)
X-RAY PROTECTION OPERATING CONFIRMATION
– STEP RANGE –
–
AFTER ALL ADJUSTMENT FINISHED.
US 4 CH LION HEAD (MONOSCOPE PATTERN)
AC 120V, RF INPUT
CONFIRMATION BY THE CRT
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
HIGH VOLTAGE
– STEP RANGE –
–
AFTER ALL ADJUSTMENT FINISHED.
US 4 CH LION HEAD (MONOSCOPE PATTERN)
AC 130V, RF INPUT
R-AMP TR BASE (TP854)
CONFIRRM WITH OSCILLOSCOPE
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.
HIGH VOLTAGE
BELOW 30kV
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL
PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
[VOLTAGE CONFIRMATION]
TP VOLTAGE OPERATION VOLTAGE
18.9± 1.1V DC 24.5V