Service manual

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19J-M100/100S/150/20J-M100

CJ19M10/CJ20M10 / 20MJ10

SERVICE MANUAL

Page

æ ELECTRICAL SPECIFICATIONS............................................................................................1

æ IMPORTANT SERVICE SAFETY PRECAUTION ...................................................................2

æ LOCATION OF USER'S CONTROL ........................................................................................ 6

æ INSTALLATION AND SERVICE INSTRUCTIONS...................................................................7

æ CHASSIS LAYOUT ............................................................................................................... 13

æ BLOCK DIAGRAM ................................................................................................................ 14

æ SCHEMATIC DIAGRAMS ..................................................................................................... 15

æ PRINTED WIRING BOARD ASSEMBLIES ...........................................................................21

æ REPLACEMENT PARTS LIST .............................................................................................. 27

æ PACKING OF THE SET ........................................................................................................ 35

CONTENTS

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

(185sq inch)

....................................20":1240cm

(192sq 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

ELECTRICAL SPECIFICATIONS

COLOR TELEVISION

Chassis No. SN-70

19J-M100/19J-M100S

19J-M150/CJ19M10

20J-M100/CJ20M10/20MJ10

Specifications are subject to change without prior

notice.

OUTPUT RATING ........ 0.9W (at 10% distortion)

SPEAKER

SIZE ................................................ 8cm(Round)

VOICE COIL IMPEDANCE ....... 8ohm at 400 Hz

ANTENNA INPUT IMPEDANCE

VHF/UHF............................ 75 ohm Unbalanced

TUNING RANGES

VHF-Channels ....................................... 2thru 13

UHF-Channels .................................... 14thru 69

CATV Channels ................................... 1thru 125

USA: (EIA, Channel Plan)

MODELS

9CH

–

L+

VIDEO IN AUDIO

POWER

19J-M100/150/100S

CJ19M10

?CH

–VOL

VIDEO IN AUDIO

POWER

20J-M100

CJ20M10

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

SHARP CORPORATION

S67A419J-M100

Summary of content (29 pages)

PAGE 1
9J-M100/100S/150/20J-M100 CJ19M10/CJ20M10 / 20MJ10 SERVICE MANUAL S67A419J-M100 COLOR TELEVISION Chassis No. SN-70 POWER – VOL + 9 CH 8 VIDEO IN AUDIO POWER – VOL + 19J-M100/150/100S 20J-M100 CJ19M10 CJ20M10 ? CH > VIDEO IN AUDIO 19J-M100/19J-M100S 19J-M150/CJ19M10 MODELS 20J-M100/CJ20M10/20MJ10 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.
PAGE 2
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10/ 20MJ10 IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and servicing guidelines which follow: WARNING X-RADIATION AND HIGH VOLTAGE 1. For continued safety, no modification of any circuit should be attempted. 2. Disconnect AC power before servicing. 3. Semiconductor heat sinks are potential shock hazards when the chassis is operating. 4.
PAGE 3
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10 / 20MJ10 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER æ (Fire & Shock Hazard) Before returning the receiver to the user, perform the following safety checks. 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver. 2.
PAGE 4
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10/ 20MJ10 PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT 1. N'entreprendre aucune modification de tout circuit. C'est dangereux. 2. Débrancher le récepteur avant toute réparation. 3.
PAGE 5
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10 / 20MJ10 PRECAUTIONS A PRENDRE LORS DE LA REPARATION (Suite) VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE æ Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes. 1. Inspecter tous les faisceaux de câbles pour s'assurer que les fils ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur. 2.
PAGE 6
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10/ 20MJ10 LOCATION OF USER'S CONTROL 19J-M100/150/100S/CJ19M10/20MJ10 6
PAGE 7
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10 / 20MJ10 20J-M100/CJ20M10 7
PAGE 8
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10/ 20MJ10 INSTALLATION AND SERVICE INSTRUCTIONS Note: (1) (2) When performing any adjustments to resistor controls and transformers use non-metallic screwdriver or TV alignment tools. Before performing adjustment, TV set must be on at least 15 minutes. CIRCUIT PROTECTION HIGH VOLTAGE CHECK The receiver is protected by a 4.0A fuse (F701), mounted on PWB-A, wired into one side of the AC line input.
PAGE 9
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10 / 20MJ10 For adjustments of this model, the bus data is convered to various analog signals by the D-A converter circuit. Note: There are still a few analog adjustments in this series such as focus and master screen voltage. Follow the steps below whenever service adjustment is required. See Figure "B" to determine if service adjustments are required. To enter the service mode . 1.
PAGE 10
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10/ 20MJ10 SERVICE NUMBER S01 S02 S03 S04 S05 S06 S07 S08 S09 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 DATA ADJUSTMENT ITEM INITIAL VALUE RANGE PICTURE TINT COLOR BRIGHTNESS SHARPNESS VERTICAL PHASE HORIZONTAL PHASE RF-AGC VERTICAL AMP VCO R CUT-OFF G CUT -OFF B CUT-OFF G GAIN B GAIN TRAP(3.58MHz) BALANCE C.C.
PAGE 11
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10 / 20MJ10 Ë adjustment VCO Adjustment White balance adjustment 1. Connect a digital voltmeter between pin (44) of IC201 and ground. 2. Select a good local channel. 3. Enter the service mode. select adjustment "S10". 4. Adjust the data so that digital voltmeter shold read 2.2V 5. Adjustment is complete, remove the volt-meter, return to "normal" mode. 1. Have unit receive a good local channel. 2. Enter the service mode.
PAGE 12
19J-M100/100S/150/20J-M100 CJ19M10/CJ20M10/ 20MJ10 Sub-color adjustment "Horizontal position adjustment 1. Have unit receive a good local channel. 2. Make sure the customer color control is set to center position . 3. Enter the service mode and select service adjustment "S03". 4. Adjust "S03"data value to obtain normal color level. 1. Have unit receive a good local channel. 2. Enter the service mode and select service adjustment "S07". 3. Adjust "S07" data value so that picture is centered.
PAGE 13
19J-M100/100S/150 19J-M100/100S/150 CJ19M10/CJ20M10 CJ19M10/CJ20M10 CHASSIS LAYOUT BLOCK DIAGRAM MODEL 20MJ10 HH G G 20MJ10 H MODEL 20MJ10 G FF F EE E DD D CC C BB B AA A 1 22 33 4 4 13 5 5 6 6 7 1 8 2 93 104 14 11 5 612
PAGE 14
19J-M100/100S/150/CJ19M10/ 20J-M100/CJ20M10 19J-M100/100S/150/CJ19M10/ 20J-M100/CJ20M10 DESCRIPTION OF SCHEMATIC DIAGRAM H NOTE: 1. The unit of resistance "ohm" is omitted (K:1000 ohms, M:1 Meg ohm). 2. All resistors are 1/8 watt, unless otherwise noted. 3. All capacitors are µ F, unless otherwise noted P: µµ F. 4. (G) indicates ±2% tolerance may be used. indecates line isolated ground. 5.G 6. indecates hot ground. VOLTAGE MEASUREMENT CONDITIONS: 1.
PAGE 15
19J-M100/100S/150 19J-M100/100S/150 CJ19M10/CJ20M10 CJ19M10/CJ20M10 SCHEMATIC DIAGRAM:MAIN Unit H G F E D C B A 1 2 3 4 17 5 6 7 8 9 10 18 11 12
PAGE 16
19J-M100/100S/150/CJ19M10/ 20J-M100/CJ20M10 19J-M100/100S/150/CJ19M10/ 20J-M100/CJ20M10 PRINTED WIRING BOARD ASSEMBLIES(19J-M100/150/CJ19M10/CJ20M10) H G F PWB-B:CRT Unit (Wiring Side) SCHEMATIC DIAGRAM :CRT Unit E D C B A PWB-A:MAIN Unit (Wiring Side) 1 2 3 4 19 5 6 7 8 9 10 20 11 12
PAGE 17
19J-M100/100S/150 19J-M100/100S/150 CJ19M10/CJ20M10 CJ19M10/CJ20M10 H G F PWB-B:CRT Unit (Chip Parts Side) E D C B A PWB-A:MAIN Unit (Chip Parts Side) 1 2 3 4 21 5 6 7 8 9 10 22 11 12
PAGE 18
19J-M100/100S/150/CJ19M10/ 20J-M100/CJ20M10 19J-M100/100S/150/CJ19M10/ 20J-M100/CJ20M10 PRINTED WIRING BOARD ASSEMBLIES(19J-M100S) H G F E PWB-B CRT PWB (Wiring Side) D C B A 1 2 3 4 23 5 6 7 8 9 10 24 11 12
PAGE 19
J-M100/100S/150 19J-M100/100S/150 CJ19M10/CJ20M10 CJ19M10/CJ20M10 H G F PWB-B CRT PWB (Chip parts) E D C B A PWB-A MAIN PWB (Chip parts) 1 2 3 4 25 5 6 7 8 9 10 26 11 12
PAGE 20
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No. ★ Part No. Description Code PARTS LIST LISTE DES PIECES PARTS REPLACEMENT CHANGE DES PIECES Replacement parts which have these special safety characteristics identified in this manual ; electrical components having such features are identified by å and shaded areas in the Replacement Parts Lists and Schematic Diagrams.
PAGE 21
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. ★ Part No. Description Code Ref. No.
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19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No.
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19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No.
PAGE 24
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No.
PAGE 25
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No.
PAGE 26
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No. DUNTK9274WEV0/V2 DUNTK9317WEV0 CRT UNIT QPLGN0561CEZZ J Plug QPLGN0461CEZZ J Plug QSOCV0840CEZZ J Socket QSOCV0826CEZZ (19J-M100/150/CJ19M10/20J-M100/CJ20M10) SC851 QSOCV0913CEZZ or QSOCV0929CEZZ (19J-M100S/20MJ10) Description Code CABINET PARTS MISCELLANEOUS PARTS P851 P852 SC851 or ★ Part No.
PAGE 27
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No.
PAGE 28
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description PACKING OF THE SET ★ Polystyrene Bag Operation manual Guarantee Card and batteries ★Polystyrene mat ★ Buffer material FRONT ★ Packing case Use tapes to fix the packing case.
PAGE 29
19J-M100/100S/150/CJ19M10 20J-M100/CJ20M10/20MJ10 Ref. No. Part No. ★ Description Code Ref. No. Part No. ★ Description Code TQ0268-S Printed in U.S.A Y.