Sharp 20F650 Service Manual

24
24-1
24-2
20F650
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL
PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
HISTORY
OF REVISION
SUB-COLOR
V03 STEP RANGE 0-127
I
2
C BUS CONTROL
OPTION SET UP, BUS SET UP, VCO ADJ, RF-AGC, SUB-PICT, SUB-TNT
US 10 CH HALF COLOR BAR PATTERN
120V
R-AMP TR BASE (TP851)
CONFIRRM WITH OSCILLOSCOPE
1) SET THE V03 BUS DATA TO GET A WAVEFORM AS BELOW
2) THIS WAVEFORM SHOWS THAT THE 75% WHITE & RED PORTIONS
OF COLOR BAR BEAT AT THE SAME LEVEL
[CHECKING CONFIRMATION]
SYMBOL REVISED CONTENT,
100% WHITE
WY RBMg
Cy G
*PLEASE TAKE NOTE THAT SERVICE DATA F60 MUST SET TO +10
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
HISTORY
OF REVISION
[VOLTAGE CONFIRMATION]
SYMBOL REVISED CONTENT,
TP VOLTAGE OPERATION VOLTAGE
19.8 ±
1.1V DC 25.5V

Sharp 20F650 Specifications

General

Brand	Sharp
Model	20F650
Category	TV
Language	English