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Sharp 20CT-250 サービスマニュアル
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.
Ë User Preset Timer (On Timer/Sleep Timer/Reminder)
Ë 2 Selectable OSD Languages (English/Thai)
Ë CATV (Hyper Band) Ready
〈Used Frequency Synthesizer Tuner〉
Ë NTSC 4.43/3.58MHz (AV only), Rear AV IN/OUT
terminal
Ë Blue Back Noise Mute
Ë Fine Tuning Adjustable with Remote Control
» SPECIFICATIONS ............................................... 2
» IMPORTANT SERVICE NOTES ......................... 2
» ADJUSTMENT PRECAUTIONS ........................ 3
» SERVICE ADJUSTMENT ................................... 6
» TROUBLE SHOOTING TABLE ......................... 15
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis.
To prevent electric shock, do not remove cover. No user - serviceable parts inside. Refer servicing to qualified
service personnel.

SERVICE MANUAL

MODEL
FEATURE
Ë Full Auto Channel Preset And Auto Channel Skip
Ë 100 CH Program Memory
Ë Aperture Control Circuit
Ë Black Stretch Circuit
Ë Bilingual System (Mono)
Ë Auto Channel Scan System
Ë Favorite Channel Memory System
CONTENTS
Page
» CHASSIS LAYOUT ............................................ 17
» SCHEMATIC DIAGRAM ................................... 19
» BLOCK DIAGRAM ............................................ 23
» REPLACEMENT PARTS LIST .......................... 27
WARNING
COLOUR TELEVISION
Chassis No. G2
20CT-250
20CT-250
S88U521CT-250
Page