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Sharp 25K-M100 Service Manual

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25K-M100/180
CK25M10
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 ............................................................................ 10
» CHASSIS LAYOUT ........................................................................................................................... 16
» BLOCK DIAGRAM ............................................................................................................................ 19
» SCHEMATIC DIAGRAMS ................................................................................................................. 22
» PRINTED WIRING BOARD ASSEMBLIES ....................................................................................... 37
» REPLACEMENT PARTS LIST .......................................................................................................... 42
» PACKING OF THE SET .................................................................................................................... 57
POWER INPUT ................................................... 120 V AC 60 Hz
POWER RATING .................................................................. 115 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
25K-M100/180, CK25M10 .. 1.3W +1.3W (at 10% distortion and
25K-S100/180, CK25S18 ............... 1.3W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

25K-S100/180
CK25S18
MODELS
CONTENTS
ELECTRICAL SPECIFICATIONS
2
(315sq inch)
(Nominal)
Dual CH Operate)
Dual CH Operate)
COLOR TELEVISION
Chassis No. SN-81
25K-M100/180, 25K-S100/180
CK25M10, CK25S18
SPEAKER
SIZE ...................................................................... 8 cm (Round)
VOICE COIL IMPEDANCE ............................... 8 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
25K-S100/180/S100/S180
CK25M10,CK25S18
S20L625K-M100
Page
(EIA, Channel Plan U.S.A.)

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Summary of Contents for Sharp 25K-M100

  • Page 1: Table Of Contents

    Color Sub-Carrier Frequency ........42.17 MHz (EIA, Channel Plan U.S.A.) (Nominal) AUDIO POWER 25K-M100/180, CK25M10 .. 1.3W +1.3W (at 10% distortion and Dual CH Operate) Specifications are subject to change without 25K-S100/180, CK25S18 ....1.3W (at 10% distortion and prior notice.

  • Page 2: Important Service Safety Precaution

    25K-S100/180/S100/S180 CK25M10,CK25S18 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

    25K-S100/180/S100/S180 CK25M10,CK25S18 IMPORTANT SERVICE SAFETY PRECAUTION (Continued) BEFORE RETURNING THE RECEIVER Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal (Fire & Shock Hazard) cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop Before returning the receiver to the user, perform across the resistor.
  • Page 4 25K-S100/180/S100/S180 CK25M10,CK25S18 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 25K-S100/180/S100/S180 CK25M10,CK25S18 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

    25K-S100/180/S100/S180 CK25M10,CK25S18 LOCATION OF USER'S CONTROL (25K-M100, CK25M10)
  • Page 7 25K-S100/180/S100/S180 CK25M10,CK25S18 LOCATION OF USER'S CONTROL (Continued) (25K-M180)
  • Page 8 25K-S100/180/S100/S180 CK25M10,CK25S18 LOCATION OF USER'S CONTROL (Continued) (25K-S100)
  • Page 9 25K-S100/180/S100/S180 CK25M10,CK25S18 LOCATION OF USER'S CONTROL (Continued) (25K-S180, CK25S18)

  • Page 10: Installation And Service Instructions

    25K-S100/180/S100/S180 CK25M10,CK25S18 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 High voltage is not adjustable but must be checked The receiver is protected by a 4.0A fuse...
  • Page 11 The service adjustment number will vary in increments of one, from "S01" to "M05"(25K-S100/ 180, CK25S18), "S01" to "OP" (25K-M180), "S01" to "S19" (25K-M100, CK25M10). Select the item you wish to adjust. 3. Data number selection Press the Vol-up or down button to adjust the data number.
  • Page 12 25K-S100/180/S100/S180 CK25M10,CK25S18 DATA SERVICE ADJUSTMENT ITEM ADJUSTMENT CONTENTS NUMBER RANGE INITIAL VALUE PICTURE 00-7F TINT 00-7F COLOR 00-7F BRIGHTNESS 00-7F SHARPNESS 00-3F Must be set to "28" VERTICAL PHASE 00-07 Must be set to "00" HORIZONTAL PHASE 00-1F RF-AGC 00-3F VERTICAL AMP 00-3F 00-7F...

  • Page 13: Service Adjustment

    25K-S100/180/S100/S180 CK25M10,CK25S18 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. adjustment "S03"...
  • Page 14 25K-S100/180/S100/S180 CK25M10,CK25S18 Sub-Brightness Adjustment Caption Position Adjustment (Horizontal) 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. adjustment "S18".

  • Page 15: Mts Adjustment

    25K-S100/180/S100/S180 CK25M10,CK25S18 MTS ADJUSTMENT (Only for 25K-S100/180, CK25S18) 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 16: Chassis Layout

    25K-S100/180/S100/S180 CK25M10,CK25S18 MODELS 25K-M100, CK25M10 CHASSIS LAYOUT PWB-B PWB-H PWB-A...
  • Page 17 25K-S100/180/S100/S180 CK25M10,CK25S18 MODELS 25K-M180 CHASSIS LAYOUT PWB-B PWB-H PWB-A...
  • Page 18 25K-S100/180/S100/S180 CK25M10,CK25S18 MODELS 25K-S100/180, CK25S18 CHASSIS LAYOUT PWB-B PWB-H PWB-A...

  • Page 19: Block Diagram

    25K-S100/180/S100/S180 CK25M10,CK25S18 MODELS 25K-M100, CK25M10 BLOCK DIAGRAM...
  • Page 20 25K-S100/180/S100/S180 CK25M10,CK25S18 MODELS 25K-M180 BLOCK DIAGRAM...
  • Page 21 25K-S100/180/S100/S180 CK25M10,CK25S18 MODELS 25K-S100/180, CK25S18 BLOCK DIAGRAM...

  • Page 22: Schematic Diagrams

    25K-S100/180/S100/S180 CK25M10,CK25S18 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. signal, the tint setting adjusted for proper color. The (K=k =1000 , M=M ) wave shapes at the red, green and blue cathodes of 2.
  • Page 23 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 SCHEMATIC DIAGRAM: CRT Unit SCHEMATIC DIAGRAM: FRONT AV Unit (25K-M100/180, CK25M10) (25K-S100/180, CK25S18)
  • Page 24 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 MODELS 25K-M100, CK25M10 SCHEMATIC DIAGRAM: MAIN-1 Unit (DUNTK9509WEK0)…25K-M100 (DUNTK9509WEK8)…CK25M10...
  • Page 25 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 MODELS 25K-M100, CK25M10 SCHEMATIC DIAGRAM: MAIN-2 Unit (DUNTK9509WEK0)…25K-M100 (DUNTK9509WEK8)…CK25M10...
  • Page 26 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 MODEL 25K-M180 SCHEMATIC DIAGRAM: MAIN-1 Unit (DUNTK9509WEK1)
  • Page 27 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 MODEL 25K-M180 SCHEMATIC DIAGRAM: MAIN-2 Unit (DUNTK9509WEK1)
  • Page 28 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 MODELS 25K-S100/180, CK25S18 SCHEMATIC DIAGRAM: MAIN-1 Unit (DUNTK9509WEK2)…25K-S100 (DUNTK9509WEK3)…25K-S180 (DUNTK9509WEK9)…CK25S18...
  • Page 29 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 MODELS 25K-S100/180, CK25S18 SCHEMATIC DIAGRAM: MAIN-2 Unit (DUNTK9509WEK2)…25K-S100 (DUNTK9509WEK3)…25K-S180 (DUNTK9509WEK9)…CK25S18...

  • Page 30: Printed Wiring Board Assemblies

    25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Wiring Side)
  • Page 31 25K-S100/180/S100/S180 25K-S100/180/S100/S180 CK25M10,CK25S18 CK25M10,CK25S18 PWB-A: MAIN Unit (Chip Parts Side)

  • Page 32: Parts List

    2. NO. DE REF 3. NO. DE PIECE 4. DESCRIPTION in USA: Contact your nearest SHARP Parts Distributor to or- in CANADE: Contact SHARP Electronics of Conada Limited der. For location of SHARP Parts Distributor, Please Phone (416) 890-2100 call Toll-Free; 1-800-BE-SHARP...
  • Page 33 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK0 (25K-M100) D654 VHD1SS119//-1 J Diode çå PWB-A: DUNTK9509WEK1 (25K-M180) D701 RH-DX0154CEZZ J Diode å PWB-A: DUNTK9509WEK8 (CK25M10) D702 RH-DX0154CEZZ J Diode å MAIN UNIT (Continued) å...
  • Page 34 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK0 (25K-M100) C412 VCKYCY1HB103K J 0.01 Ceramic PWB-A: DUNTK9509WEK1 (25K-M180) C413 VCKYCY1HB103K J 0.01 Ceramic PWB-A: DUNTK9509WEK8 (CK25M10) C414 VCKYCY1CB104K J 0.1 Ceramic MAIN UNIT (Continued)
  • Page 35 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK0 (25K-M100) RJ30 VRD-MN2BE000J 1/8W Carbon PWB-A: DUNTK9509WEK1 (25K-M180) RJ32 VRS-CY1JF000J 1/16W M-Ox. PWB-A: DUNTK9509WEK8 (CK25M10) RJ38 VRS-CY1JF000J 1/16W M-Ox. MAIN UNIT (Continued) RJ39 VRD-MN2BE000J...
  • Page 36 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK0 (25K-M100) R602 VRD-RM2HD560J J 56 1/2W Carbon PWB-A: DUNTK9509WEK1 (25K-M180) å R603 VRS-RG3LB270J M 27 M-Ox. PWB-A: DUNTK9509WEK8 (CK25M10) (Q602:2SD1556) MAIN UNIT (Continued) R302...
  • Page 37 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK0 (25K-M100) R2403 VRS-CY1JF101J J 100 1/16W M-Ox. PWB-A: DUNTK9509WEK1 (25K-M180) R2404 VRS-CY1JF101J J 100 1/16W M-Ox. PWB-A: DUNTK9509WEK8 (CK25M10) R2501 VRD-MN2BE103J J 10k 1/8W...
  • Page 38 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK2 (25K-S100) DIODES PWB-A: DUNTK9509WEK3 (25K-S180) You can substitute "VHD1SS119//-1" for "RH-DX0475CEZZ" PWB-A: DUNTK9509WEK9 (CK25S18) RH-EX0611GEZZ J Zener Diode, 5.1V MAIN UNIT (Continued) TUNER RH-EX0293CEZZ RH-EX0673GEZZ M Zener Diode, 32V THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY...
  • Page 39 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK2 (25K-S100) CAPACITOS PWB-A: DUNTK9509WEK3 (25K-S180) [EL.··· Electrolytic, M-Poly.··· Metalized Polypro Film] PWB-A: DUNTK9509WEK9 (CK25S18) VCEA0A1CW476M J 47 MAIN UNIT (Continued) VCEA0A1HW105M J 1 D760 RH-DX0441CEZZ J Diode VCEA0A1HW475M J 4.7...
  • Page 40 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK2 (25K-S100) C801 RC-QZA223TAYK J 0.022 50V Mylar PWB-A: DUNTK9509WEK3 (25K-S180) C802 VCEA0A1HW474M J 0.47 PWB-A: DUNTK9509WEK9 (CK25S18) C803 VCCCCY1HH110J J 11p Ceramic MAIN UNIT (Continued) C804 VCKYCY1CB104K J 0.1 Ceramic...
  • Page 41 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK2 (25K-S100) VRS-RG3AB391J M 390 M-Ox. å PWB-A: DUNTK9509WEK3 (25K-S180) å VRS-RG3AB470J J 47 M-Ox. PWB-A: DUNTK9509WEK9 (CK25S18) VRS-RG3LB333J J 33k M-Ox. å MAIN UNIT (Continued) VRD-MN2BE101J J 100 1/8W...
  • Page 42 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK2 (25K-S100) R717 VRN-GA2EB1R0J 1/4W M-Film å PWB-A: DUNTK9509WEK3 (25K-S180) å R718 VRS-RG3AB120J M 12 M-Ox. PWB-A: DUNTK9509WEK9 (CK25S18) R719 VRN-RL3DBR56J M 0.56 M-Film å MAIN UNIT (Continued) R751 VRD-RM2HD471J...
  • Page 43 25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTK9509WEK2 (25K-S100) MISCELLANEOUS PARTS PWB-A: DUNTK9509WEK3 (25K-S180) å RY701 RRLYU0036CEZZ J Relay PWB-A: DUNTK9509WEK9 (CK25S18) MAIN UNIT (Continued) RRLYU0038CEZZ R2063 VRD-MN2BE222J J 2.2k 1/8W Carbon å...

  • Page 44: Crt Unit

    25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R872 VRD-RA2BE221J J 220 1/8W Carbon PWB: DUNTK9510WEK0 å R873 VRS-VV3LB123J J 12k M-Ox. CRT UNIT R874 VRD-RM2HD222J J 2.2k 1/2W Carbon TRANSISTORS R881 VRD-RA2BE102J J 1k 1/8W Carbon Q851...

  • Page 45: Packing Parts

    CK25M10,CK25S18 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-H: DUNTK9310WEK0 (25K-M100/180, CK25M10) SUPPLIED ACCESORRIES PWB-H: DUNTK9310WEK1 (25K-S100/180, CK25S18) FRONT AV UNIT J1001 QJAKE0053GEZZ J Jack, Video in TGAN-1006MEZZ M Guarantee Card J1002 QJAKE0055GEZZ J Jack, Audin in (L) (U.S.A.

  • Page 46: Cabinet Parts

    CABINET PARTS LOCATION CABINET PARTS 25K-M100,CK25M10 CCABA1277MES0 M Cabinet Ass'y, Front Not Available – Front Cabinet — HBDGB1008MESA M Badge, "SHARP" JBTN-1086MEKA M Button, Power, Vol-up/down AD JBTN-1087MEKA M Button, CH-up/down GCOVA1028MEKA M Cover for R/C GCABB1123MEKA M Rear Cabinet 25K-M180...

  • Page 47: Packing Of The Set

    25K-S100/180/S100/S180 CK25M10,CK25S18 Ref. No. Part No. Description PACKING OF THE SET Code Ref. No. Part No. Description Code Polystyrene Bag Operation Manual Guarantee Card Infrared R/C Unit Batteries Polyethylene Sack Buffer Material FRONT Packing Case Serial Number Label Use 22 staples fix the packing case.
  • Page 48 Code Ref. No. Part No. Description Code COPYRIGHT © 1998 BY SHARP CORPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrleval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

This manual is also suitable for:

25k-m18025k-s100Ck25s1825k-s180Ck25m10

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