Sharp 25C340, Service Manual

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25C340
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 ............................................................................................................................ 11
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BLOCK DIAGRAM ............................................................................................................................. 12
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SCHEMATIC DIAGRAMS .................................................................................................................. 13
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PRINTED WIRING BOARD ASSEMBLIES ....................................................................................... 19
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REPLACEMENT PARTS LIST ........................................................................................................... 22
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PACKING OF THE SET ..................................................................................................................... 29
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SHARP CORPORATION
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
CONTENTS
MODEL
ELECTRICAL SPECIFICATIONS
POWER INPUT ..................................................... 120 V AC 60 Hz
POWER RATING .................................................................. 105 W
PICTURE SIZE ........................................... 2,032cm 2 (315sq 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 ..................... 1.5 W+1.5 W (at 10% distortion and
Dual CH Operate)
SPEAKER
SIZE ...................................................................... 8 cm (Round)
VOICE COIL IMPEDANCE ............................. 32 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.
25C340
COLOR TELEVISION
Chassis No. C/D-BM
SERVICE MANUAL