Sharp 20LK31M Service Manual
Browse online or download pdf Service Manual for TV Sharp 20LK31M. Sharp 20LK31M 30 pages. Color television
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LK
20LK31M
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.
» ELECTRICAL SPECIFICATIONS ......................................................................................................... 1
» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................ 2
» LOCATION OF USER'S CONTROL ..................................................................................................... 4
» INSTALLATION AND SERVICE INSTRUCTIONS ............................................................................... 5
» CHASSIS LAYOUT ............................................................................................................................. 10
» BLOCK DIAGRAM ..............................................................................................................................12
» SCHEMATIC DIAGRAMS ...................................................................................................................14
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 21
» REPLACEMENT PARTS LIST ...........................................................................................................24
» PACKING OF THE SET ...................................................................................................................... 31
POWER INPUT ........................................ 110-220 V AC 50/60 Hz
POWER RATING
20LK31M ............................................................................ 88 W
20LK61M ............................................................................ 98 W
PICTURE SIZE .......................................... 1,194cm
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
AUDIO POWER
OUTPUT RATING
20LK31M ........................................... 1.5W (at 10% distortion)
20LK61M ........................................... 3.0W (at 10% distortion)
SERVICE MANUAL
LK
20LK61M
CONTENTS
ELECTRICAL SPECIFICATIONS
2
(Nominal)
SHARP CORPORATION
1
COLOR TELEVISION
Chassis No. SN-70A
20LK31M
20LK61M
MODELS
SPEAKER
SIZE ........................................................................ 9 cm
VOICE COIL IMPEDANCE
20LK31M ................................................... 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.
20LK31M
20LK61M
S80G420LK31M/
Page
5 cm