Sharp 20MU14, Service Manual

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1
COLOR TELEVISION
Chassis No. CD-A
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 ..................................................................................................... 4
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INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 5
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CHASSIS LAYOUT ............................................................................................................................ 10
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BLOCK DIAGRAM ............................................................................................................................. 11
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SCHEMATIC DIAGRAMS .................................................................................................................. 12
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PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 15
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REPLACEMENT PARTS LIST ........................................................................................................... 18
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PACKING OF THE SET ..................................................................................................................... 23
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
............................................. 69 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 ........... 1.0 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
20MU14
20MU14