Sharp 27F640, Service Manual

27F640
27F641

SHARP CORPORATION

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

Chassis No. GB-3U

Page

»

 ELECTRICAL SPECIFICATIONS ......................................................................................................... 1

»

 IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2

»

 LOCATION OF USER'S CONTROL ..................................................................................................... 4

»

 INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 5

»

 SERVICE ADJUSTMENT ..................................................................................................................... 9

»

 CHASSIS LAYOUT ............................................................................................................................. 12

»

 BLOCK DIAGRAM .............................................................................................................................. 13

»

 DESCRIPTION OF SCHEMATIC DIAGRAMS & WAVEFORMS ........................................................ 14

»

 SCHEMATIC DIAGRAMS ................................................................................................................... 15

»

 PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 22

»

 PARTS LIST ........................................................................................................................................ 27

»

 PACKING OF THE SET ...................................................................................................................... 35

CONTENTS

SPEAKER

SIZE ........................................................ 12 x 6 cm oval (2 pcs.)

VOICE COIL IMPEDANCE ............................... 8 ohm at 400 Hz

ANTENNA INPUT IMPEDANCE

VHF/UHF ..................................................... 75 ohm Unbalanced

TUNING RANGES

VHF-Channels ............................................................... 2 thru 13

UHF-Channels ............................................................ 14 thru 69

CATV Channels ........................................................... 1 thru 125

(EIA, Channel Plan U.S.A.)

POWER INPUT ..................................................... 120V AC, 60 Hz

POWER RATING .................................................................. 130W

PICTURE SIZE ....................................... 2,193.5 cm

2 

(339sq inch)

CONVERGENCE ............................................................. Magnetic

SWEEP DEFLECTION .................................................... Magnetic

FOCUS ............................................... Hi-Bi-Potential Electrostatic

INTERMEDIATE FREQUENCIES

Picture IF Carrier Frequency ..................................... 45.75 MHz

Sound IF Carrier Frequency ...................................... 41.25 MHz

Color Sub-Carrier Frequency .................................... 42.17 MHz

 (Nominal)

AUDIO POWER

OUTPUT RATING .............. 5.0W + 5.0W (at 10% distortion and

Dual CH Operate)

Specifications are subject to change without
prior notice.

ELECTRICAL SPECIFICATIONS

MODELS

SERVICE MANUAL

27F640
27F641

S14O227F640//

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