Sharp 25N-M100 Service Manual
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Sharp 25N-M100 Service Manual

Sharp 25N-M100 Service Manual

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See also: Operating Manual
25N-M100/180
CN25M10
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 .................................................................................................... 6
» INSTALLATION AND SERVICE INSTRUCTIONS ............................................................................... 9
» CHASSIS LAYOUT ............................................................................................................................ 15
» BLOCK DIAGRAM ............................................................................................................................. 17
» SCHEMATIC DIAGRAMS .................................................................................................................. 21
» PRINTED WIRING BOARD ASSEMBLIES ....................................................................................... 45
» REPLACEMENT PARTS LIST ........................................................................................................... 49
» PACKING OF THE SET ..................................................................................................................... 59
POWER INPUT ..................................................... 120 V AC 60 Hz
POWER RATING
25N-M100/180, CN25M10 ............................................... 105 W
25N-S100/180, CN25S18/20 ............................................ 110 W
PICTURE SIZE ........................................... 2,032cm
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
25N-M100/180, CN25M10 ............. 1.3W (at 10% distortion and
25N-S100/180, CN25S18/20 .. 1.3W+1.3W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

25N-S100/180
CN25S18/20
MODELS
CONTENTS

ELECTRICAL SPECIFICATIONS

2
(315sq inch)
(Nominal)
Dual CH Operate)
Dual CH Operate)
COLOR TELEVISION
Chassis No. SN-91
25N-M100/180, 25N-S100/180
CN25M10, CN25S18, CN25S20
SPEAKER
SIZE ...................................................................... 8 cm (Round)
VOICE COIL IMPEDANCE ............................ 32 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.
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
1
25N-M100/M180/S100/S180
CN25M10,CN25S18/20
S40Y525N-M100
Page
(EIA, Channel Plan U.S.A.)

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Summary of Contents for Sharp 25N-M100

  • Page 1: Table Of Contents

    Sound IF Carrier Frequency ........41.25 MHz Color Sub-Carrier Frequency ........42.17 MHz (Nominal) AUDIO POWER 25N-M100/180, CN25M10 ..... 1.3W (at 10% distortion and Dual CH Operate) Specifications are subject to change without 25N-S100/180, CN25S18/20 .. 1.3W+1.3W (at 10% distortion and prior notice.

  • Page 2: Important Service Safety Precaution

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING X-RADIATION AND HIGH VOLTAGE LIMITS 1. For continued safety, no modification of any circuit 1.

  • Page 3: Safety Notice

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) • Connect the resistor connection to all exposed metal BEFORE RETURNING THE RECEIVER parts having a return to the chassis (antenna, metal (Fire & Shock Hazard) cabinet, screw heads, knobs and control shafts, escutcheon and etc.) and measure the AC voltage...
  • Page 4 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 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 LIMITES DES RADIATIONS X ET DE LA HAUTE TENSION 1.
  • Page 5 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 PRECAUTIONS A PRENDRE LORS DE LA REPARATION (Suite) • Toucher avec la sonde d'essai les pièces métalliques VERIFICATIONS CONTRE L'INCEN-DIE ET exposées qui présentent une voie de retour au LE CHOC ELECTRIQUE châssis (antenne, coffret métallique, tête des vis, Avant de rendre le récepteur à...

  • Page 6: Location Of User's Control

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 LOCATION OF USER'S CONTROL (25N-M100, CN25M10) Front Panel VIDEO/AUDIO IN TERMINALS POWER Press → On. Press again → Off. CHANNEL UP/DOWN VOLUME UP/DOWN SENSOR AREA FOR (') Selects next higher channel. (+) Increases sound. REMOTE CONTROL ( " ) Selects next lower channel.
  • Page 7 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 LOCATION OF USER'S CONTROL (Continued) (25N-M180) Front Panel POWER VIDEO/AUDIO IN TERMINALS Press → On. Press again → Off. CHANNEL UP/DOWN VOLUME UP/DOWN (') Selects next higher channel. (+) Increases sound. SENSOR AREA FOR ( " ) Selects next lower channel.
  • Page 8 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 LOCATION OF USER'S CONTROL (Continued) (25N-S100/180, CN25S18/20) Front Panel POWER — POWER IN 2 VIDEO/AUDIO TERMINALS Press → On. POWER — VOL Press again → Off. (VIDEO/AUDIO terminals are also provided on the rear.) VOLUME UP/DOWN CHANNEL UP/DOWN (+) Increases sound.

  • Page 9: Installation And Service Instructions

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 INSTALLATION AND SERVICE INSTRUCTIONS Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic screwdrivers or TV alignment tools. (2) Before performing adjustments, the TV set must be on at least 15 minutes. HIGH VOLTAGE CHECK CIRCUIT PROTECTION The receiver is protected by a 4.0A fuse (F701),...
  • Page 10 The service adjustment number will vary in increments of one, from "S01" to "OP2" (25N-M100/ 180, CN25M10), "S01" to "M05"(25N-S100/180, CN25S18/20). Select the item you wish to adjust.
  • Page 11 OSD SETUP 00-03 Must be set to "00" TUNER SETUP 00,01 Must be set to "00" OPTION 1 (Set to each mode) 00-FF "B0"=25N-M100, "B3"=25N-M180, "B3"=25N-S100, "B7"=25N-S180, "A0"=CN25M10, "A7"=CN25S18, "A7"=CN25S20 OPTION 2 00-FF "04"=25N-M100, "04"=25N-M180, "A7"=25N-S100, "A7"=25N-S180, "04"=CN25M10, "07"=CN25S18, "A7"=CN25S20...

  • Page 12: Service Adjustment

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 SERVICE ADJUSTMENT VCO Adjustment White Balance Adjustment 1. Connect a digital voltmeter between pin (44) of IC201 1. Receive a good local channel. and ground. 2. Enter the service mode and select the service 2. Receive a good local channel.
  • Page 13 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Sub-Brightness Adjustment 3.58MHz Trap Adjustment 1. Receive a good local channel. 1. Receive a good local channel. 2. Make sure the customer brightness control is set to 2. Enter the service mode and select the service center position.

  • Page 14: Mts Adjustment

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MTS ADJUSTMENT (Only for 25N-S100/180, CN25S18/20) MTS Level Adjustment 1. Feed the following monaural signal to pin (14) of IC3001. Monaural signal : 300Hz, 245mVrms 2. Connect the rms voltmeter to pin (39) of IC3001. 3. Enter the service mode and select the service adjustment "M01".

  • Page 15: Chassis Layout

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-M100/180, CN25M10 CHASSIS LAYOUT PWB-B PWB-H PWB-A...
  • Page 16 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-S100/180, CN25S18/20 CHASSIS LAYOUT PWB-B (25N-S180, CN25S20) PWB-K (25N-S100) PWB-K PWB-H PWB-A...

  • Page 17: Block Diagram

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-M100/180, CN25M10 BLOCK DIAGRAM...
  • Page 18 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL 25N-S100 BLOCK DIAGRAM...
  • Page 19 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-S180, CN25S20 BLOCK DIAGRAM...
  • Page 20 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL CN25S18 BLOCK DIAGRAM...

  • Page 21: Schematic Diagrams

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 DESCRIPTION OF SCHEMATIC DIAGRAM WAVEFORM MEASUREMENT CONDITIONS: NOTES: 1. Photographs taken on a standard gated color bar 1. The unit of resistance "ohm" is omitted. (K=k Ω =1000 Ω , M=M Ω ) signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of 2.
  • Page 22 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-M100, CN25M10 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 23 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-M100, CN25M10 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 24 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL 25N-M180 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 25 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL 25N-M180 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 26 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL 25N-S100 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 27 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL 25N-S100 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 28 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-S180, CN25S20 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 29 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-S180, CN25S20 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 30 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL CN25S18 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 31 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL CN25S18 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 32 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 SCHEMATIC DIAGRAM: CRT and FRONT AV Units Ë 25N-M100/180, CN25M10 Ë 25N-S100/180, CN25S18/20...
  • Page 33 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODEL 25N-S100 SCHEMATIC DIAGRAM: S-VIDEO Unit...
  • Page 34 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 MODELS 25N-S180, CN25S20 SCHEMATIC DIAGRAM: DIGICOM/S-VIDEO Unit...
  • Page 35 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) PWB-H: FRONT AV Unit (Wiring Side)
  • Page 36 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 PWB-A: MAIN Unit (Wiring Side)
  • Page 37 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 PWB-A: MAIN Unit (Chip Parts Side)
  • Page 38 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 D 1 5 0 3 C 1 5 1 0 Q 1 5 0 4 R 1 5 1 9 C 1 5 0 8 R 1 5 1 1 D 1 5 0 2 L 1 5 0 2...
  • Page 39 4. DESCRIPTION in USA: Contact your nearest SHARP Parts Distributor to order. in CANADA: Contact SHARP Electronics of Canada Limited For location of SHARP Parts Distributor, Please call Toll- Phone (416) 890-2100 Free; 1-800-BE-SHARP MARK: SPARE PARTS-DELIVERY SECTION MARQUE: SECTION LIVRAISON DES PIECES DE RECHANGE...
  • Page 40 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA126WEK0/K1 (25N-M100/25N-M180) D709 RH-DX0229CEZZ J Diode å PWB-A: DUNTKA126WEK2/K3 (25N-S100/25N-S180) D712 RH-DX0407CEZZ J Diode å PWB-A: DUNTKA126WEK6 (CN25M10) D713 RH-EX0673GEZZ J Zener Diode, 32V å...
  • Page 41 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA126WEK0/K1 (25N-M100/25N-M180) C510 VCFYSA1JB564J M 0.56 Mylar PWB-A: DUNTKA126WEK2/K3 (25N-S100/25N-S180) C511 VCKYPA2HB391K J 390p 500V Ceramic PWB-A: DUNTKA126WEK6 (CN25M10) C512 VCQYTA1HM473K J 0.047 50V Mylar...
  • Page 42 CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA126WEK0/K1 (25N-M100/25N-M180) C3018 VCEA0A1HW105M J 1 PWB-A: DUNTKA126WEK2/K3 (25N-S100/25N-S180) (25N-S100/180, CN25S18/20) PWB-A: DUNTKA126WEK6 (CN25M10) C3019 VCEA0A1HW475M J 4.7 PWB-A: DUNTKA126WEK7/L5 (CN25S18/CN25S20) (25N-S100/180, CN25S18/20) MAIN UNIT (Continued) C3020 VCEA0A1HW475M J 4.7...
  • Page 43 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA126WEK0/K1 (25N-M100/25N-M180) R414 VRS-CY1JF101J J 100 1/16W M-Ox. PWB-A: DUNTKA126WEK2/K3 (25N-S100/25N-S180) R415 VRS-CY1JF101J J 100 1/16W M-Ox. PWB-A: DUNTKA126WEK6 (CN25M10) R416 VRS-CY1JF332J J 3.3k 1/16W M-Ox.
  • Page 44 25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA126WEK0/K1 (25N-M100/25N-M180) R2007 VRS-CY1JF223J J 22k 1/16W M-Ox. PWB-A: DUNTKA126WEK2/K3 (25N-S100/25N-S180) (25N-M100/180, CN25M10) PWB-A: DUNTKA126WEK6 (CN25M10) R2008 VRD-MN2BE333J J 33k 1/8W Carbon PWB-A: DUNTKA126WEK7/L5 (CN25S18/CN25S20)

  • Page 45: Printed Wiring Board Assemblies

    CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKA126WEK0/K1 (25N-M100/25N-M180) P651 QPLGN0361CEZZ J Plug, 3-pin PWB-A: DUNTKA126WEK2/K3 (25N-S100/25N-S180) P701 QPLGN0207CEZZ J Plug, 2-pin (M) PWB-A: DUNTKA126WEK6 (CN25M10) P703 QPLGN0269GEZZ J Plug, 2-pin (P) PWB-A: DUNTKA126WEK7/L5 (CN25S18/CN25S20)

  • Page 46: Crt Unit

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B: DUNTK9510WEK1 PWB-K: DUNTKA114WEK0 (25N-S100) CRT UNIT S-VIDEO UNIT TRANSISTORS INTEGRATED CIRCUIT Q851 VS2SC3198-Y-1 J 2SC3198 IC1501 VHiM52055FP-1 J M52055FP Q852 VS2SC3789//2E M 2SC3789 TRANSISTORS VS2SC3619LB1E You can substitute "VS2SD601AR/-1"...
  • Page 47 C1416 VCKYCY1CB104K J 0.1 Ceramic C1417 VCCCCY1HH390J J 39p Ceramic C1418 VCEA0A1HW106M J 10 C1419 VCEA0A1HW106M J 10 PWB-H: DUNTK9310WEK0 (25N-M100/180, CN25M10) C1420 VCKYCY1HB103K J 0.01 Ceramic PWB-H: DUNTK9310WEK1 (25N-S100/180, CN25S18/20) C1421 VCCCCY1HH120J J 12p Ceramic C1423 VCCCCY1HH120J J 12p...

  • Page 48: 25N-M100/180, Cn25M10

    CCABA1322MES0 M Front Cabinet Ass'y QCNW-0133MEZZ M Connecting Cord (25N-M180) (25N-M100/180, CN25M10) Not Available – Front Cabinet — QCNW-0135MEZZ M Connecting Cord HBDGB1008MESA M Badge, "SHARP" (25N-M100/180, CN25M10) JBTN-1086MEKA M Button, Power, Vol-up/down AD QCNW-0130MEZZ M Connecting Cord JBTN-1087MEKA M Button, CH-up/down (25N-S100/180, CN25S18/20)

  • Page 49: Replacement Parts List

    25N-M100/M180/S100/S180 CN25M10,CN25S18/20 Ref. No. Part No. Description PACKING OF THE SET Code Ref. No. Part No. Description Code Polyethylene Bag Operation Manual Infrared R/C Unit Batteries Polyethylene Sheet Buffer Material FRONT Packing Case Use tapes to fix the packing case.
  • Page 50 Code Ref. No. Part No. Description Code COPYRIGHT © 2000 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

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