Sharp 20MU11, Service Manual

1

20MU11

COLOR TELEVISION

Chassis No. SN-80

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.

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

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

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LOCATION OF USER'S CONTROL ..................................................................................................... 6

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INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 7

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

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

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SCHEMATIC DIAGRAMS .................................................................................................................. 14

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PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 18

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REPLACEMENT PARTS LIST ........................................................................................................... 23

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

Page

SHARP CORPORATION

This document has been published to be used for after
sales service only.
The contents are subject to change without notice.

CONTENTS

SERVICE MANUAL

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

POWER RATING  

............................................. 82 W

PICTURE SIZE ....................... 1,194cm

2

 (185sq 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)

ELECTRICAL SPECIFICATIONS

AUDIO POWER

OUTPUT RATING ........... 0.9 W (at 10% distortion)

SPEAKER

SIZE .................................................. 8 cm (Round)

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.)

Specifications are subject to change without
prior notice.

MODELS

20MU11