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14LK20A
COLOR TELEVISION
Chassis No. SN-70A
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.
S49F614LK20A/
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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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DESCRIPTION OF SCHEMATIC DIAGRAMS ................................................................................... 12
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SCHEMATIC DIAGRAMS .................................................................................................................. 13
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PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 16
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REPLACEMENT PARTS LIST ........................................................................................................... 19
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PACKING OF THE SET ..................................................................................................................... 25
Page
CONTENTS
SERVICE MANUAL
MODEL
POWER INPUT ....................................... 110-220 V AC 50/60 Hz
POWER RATING .................................................................... 63 W
PICTURE SIZE ............................................. 580cm
2
(89.8sq 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 ................................. 1.3W (at 10% distortion)
ELECTRICAL SPECIFICATIONS
SPEAKER
SIZE .............................................................................. 9 x 5 cm
VOICE COIL IMPEDANCE ............................. 16 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
Specifications are subject to change without
prior notice.
SHARP CORPORATION
14LK20A
