Sharp 20F640 XFlat Service Manual
Text of the manual
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
In the interests of user-safety (Required by safety regulations in some countries ) the set should be restored to its
original condition and only parts identical to those specified should be used.
COLOR TELEVISION
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IMPORTANT SERVICE SAFETY PRECAUTION
Ë Service work should be performed only by qualified service technicians who are
thoroughly familiar with all safety checks and the servicing guidelines which follow:
CAUTION: FOR CONTINUED
PROTECTION AGAINST A
RISK OF FIRE, REPLACE
ONLY WITH SAME TYPE 4A-
125V FUSE.
X-RADIATION AND HIGH VOLTAGE LIMITS
1. Be sure all se
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LOCATION OF USER'S CONTROL
Front Panel
POWER
Press → On.
Press again → Off.
SENSOR AREA FOR
REMOTE CONTROL
MENU
Press → Accesses MAIN MENU.
Press again → Exits MAIN MENU.
VIDEO IN 2 L-AUDIO-R
CHANNEL UP/DOWN
(') Selects next higher channel.
(") Selects next lower channel.
VOLUME UP/DOWN
(+) Increases sound.
( ) Decreases sound.
Basic Remote Contr
The receiver is protected by a 4.0A fuse (F701),
mounted on PWB-A, wired into one side of the AC
line input.
X-RADIATION PROTECTOR CIRCUIT TEST
After service has been performed on the horizontal
deflection system, high voltage system, B+ system,
test the X-Radiation protection circuit to ascertain
proper operation as follows:
1. Apply 12
