POWER
L +
POWER
20J-M100
19J-M100/150/100S
CJ20M10
CJ19M10
MODELS
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.
POWER INPUT ........................... 120 V AC 60 Hz
POWER RATING .......................................... 84 W
PICTURE SIZE ............... 19":1194cm
.................................... 20":1240cm
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
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ELECTRICAL SPECIFICATIONS ............................................................................................ 1
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CHASSIS LAYOUT ............................................................................................................... 13
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BLOCK DIAGRAM ................................................................................................................ 14
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SCHEMATIC DIAGRAMS ..................................................................................................... 15
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REPLACEMENT PARTS LIST .............................................................................................. 27
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PACKING OF THE SET ........................................................................................................ 35
SHARP ELECTRONICS CORPORATION
Service Headquarters: Sharp Plaza, Mahwah, New Jersey 07430-2135
SHARP ELECTRONICS OF CANADA LTD.
335 Britannia Road East Mississauga, Ontario L4Z 1W9 Canada
SERVICE MANUAL
COLOR TELEVISION
19J-M100/19J-M100S
19J-M150/CJ19M10
20J-M100/CJ20M10/20MJ10
ELECTRICAL SPECIFICATIONS
SPEAKER
2
(185sq inch)
2
(192sq inch)
ANTENNA INPUT IMPEDANCE
TUNING RANGES
(Nominal)
CONTENTS
SHARP CORPORATION
1
Chassis No. SN-70
OUTPUT RATING ........ 0.9W (at 10% distortion)
SIZE ................................................ 8cm(Round)
VOICE COIL IMPEDANCE ....... 8ohm at 400 Hz
VHF/UHF ............................ 75 ohm Unbalanced
VHF-Channels ....................................... 2thru 13
UHF-Channels .................................... 14thru 69
CATV Channels ................................... 1thru 125
USA: (EIA, Channel Plan)
Specifications are subject to change without prior
notice.
19J-M100/100S/150/20J-M100
CJ19M10/CJ20M10 / 20MJ10
S67A419J-M100
Page
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Questions and answers
Cómo mido si el regulador y el ic lx2942ce está bien
To measure if the regulator and the IC LX2942CE are functioning properly in a Sharp device:
1. Apply 120V AC using a variac transformer.
2. Allow warm-up, then adjust all customer controls for normal picture and sound.
3. Select a local channel.
4. Connect a digital voltmeter to test point TP653. The expected voltage should be:
- 20.9 ± 1.5V for models 19J-M100/100S/M150/CJ19M10
- 21.5 ± 1.5V for models 20J-M100/CJ20M10
5. If the voltage is incorrect, inspect the related circuitry for malfunctioning components.
6. For further testing, apply 26.8V DC to TP653 using an external DC supply — the TV should shut off.
7. To reset the protection circuit, unplug the AC cord and short TP651 to TP652.
These steps help verify if the voltage regulator and IC LX2942CE are operating as intended.
This answer is automatically generated