1
20AR21
20AR31
COLOR TELEVISION
Chassis No. MSA
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/
» ELECTRICAL SPECIFICATIONS .........................................................................................................1
» IMPORTANT SERVICE SAFETY PRECAUTION .................................................................................2
» LOCATION OF USER'S CONTROL .....................................................................................................4
» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................5
» CHASSIS LAYOUT .............................................................................................................................13
» BLOCK DIAGRAM ..............................................................................................................................15
» SCHEMATIC DIAGRAMS ...................................................................................................................20
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................28
» REPLACEMENT PARTS LIST ............................................................................................................32
» PACKING OF THE SET ......................................................................................................................39
Page
CONTENTS
MODELS
POWER INPUT ........................................ 110-220 V AC 50/60 Hz
POWER RATING
20AR21 ................................................................................72 W
20AR31 ................................................................................79 W
PICTURE SIZE .......................................... 1,192 cm
2
(185sq inch)
CONVERGENCE ............................................................. Magnetic
SWEEP DEFLECTION .................................................... Magnetic
FOCUS ............................................................... QPF 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
20AR21 ................................... 1.5 + 1.5 W (at 10% distortion)
20AR31 ................................... 3.0 + 3.0 W (at 10% distortion)
ELECTRICAL SPECIFICATIONS
SPEAKER
SIZE ................................................................ 9 × 5 cm (Round)
VOICE COIL IMPEDANCE
20AR21 ....................................................... 32 ohm at 400 Hz
20AR31 ......................................................... 4 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.
1
20AR21
20AR31
20A R 21
AUT O VOLT AGE
20A R 31
MT S ST EREO
AUT O VOLT AGE
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