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Sharp 20R-S100S Service Manual

Chassis no. sn-010
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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 ..................................................................................................... 4
» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 5
» CHASSIS LAYOUT ............................................................................................................................. 11
» BLOCK DIAGRAM .............................................................................................................................. 12
» SCHEMATIC DIAGRAMS ................................................................................................................... 13
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 19
» REPLACEMENT PARTS LIST ............................................................................................................ 22
» PACKING OF THE SET ...................................................................................................................... 29
POWER INPUT .................................................... AC 120 V, 60 Hz
POWER RATING ................................................................... 74 W
PICTURE SIZE ........................................... 1,240cm
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
OUTPUT RATING ..................... 1.5W + 1.5W (at 10% distortion

SHARP CORPORATION

SERVICE MANUAL

MODEL
CONTENTS
ELECTRICAL SPECIFICATIONS
SPEAKER
2
(192sq inch)
ANTENNA INPUT IMPEDANCE
TUNING RANGES
(Nominal)
and Dual CH Operate)
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
1
COLOR TELEVISION
Chassis No. SN-010
20R-S100S
SIZE ...................................................................... 8 cm (Round)
VOICE COIL IMPEDANCE ............................ 32 ohm at 400 Hz
VHF/UHF ..................................................... 75 ohm Unbalanced
VHF-Channels ............................................................... 2 thru 13
UHF-Channels ............................................................ 14 thru 69
CATV Channels ........................................................... 1 thru 125
Specifications are subject to change without
prior notice.
20R-S100S
S21P120R-S100
Page
(EIA, Channel Plan U.S.A.)

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Summary of Contents for Sharp 20R-S100S

  • Page 1: Table Of Contents

    20R-S100S SERVICE MANUAL S21P120R-S100 COLOR TELEVISION Chassis No. SN-010 20R-S100S MODEL 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: Important Service Safety Precaution

    20R-S100S 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

    20R-S100S 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: Location Of User's Control

    20R-S100S LOCATION OF USER'S CONTROL Front Panel SENSOR AREA FOR POWER REMOTE CONTROL VIDEO/AUDIO IN TERMINALS POWER POWER CHANNEL UP/DOWN Press ) Selects next higher channel. Press again Off. VOLUME UP/DOWN ( ) Selects next lower channel. (+) Increases sound.

  • Page 5: Installation And Service Instructions

    20R-S100S 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 6 20R-S100S For adjustments of this model, the bus data is converted 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 the service adjusment is required.
  • Page 7 20R-S100S Below are the adjustments ranges and initial values for FIX VALUE category. FIX VALUE DATA SERVICE ADJUST ITEM INITIAL VALUE (Hex) POSITION RANGE OPTION 1 00-FF OPTION 2 00-FF E-SAVE 00-FF TUNER SETUP 00, 01 R-TONE RD 00-7F R-TONE BD...
  • Page 8 20R-S100S FEATURE DATA SERVICE ADJUSTMENT CONTENTS ADJUST ITEM INITIAL VALUE POSITION RANGE MS LEVEL 00-0F MTS-VCO 00-3F FILTER 00-3F LOW SEPARATION 00-3F HIGH SEPARATION 00-3F Note: Refer to the SERVICE ADJUSTMENT for each corresponding values. Table - D Holding down both the Vol-up/Ch-down buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2102 (IC2101).

  • Page 9: Service Adjustment

    20R-S100S Ë SERVICE ADJUSTMENT RF AGC Adjustment White Balance Adjustment 1. Receive a good local channel. 1. Receive a good local channel. 2. Enter the service mode signal category and select 2. Select the service adjustment "S12" and set the data the service adjustment "S01".
  • Page 10 20R-S100S Ë MTS ADJUSTMENT Vertical-Size, V-Linearity and V-S Correction Adjustments MTS Level Adjustment 1. Feed the following monaural signal to pin (14) of 1. Receive a good local channel. IC3001. 2. Enter the service mode DEF category and select the Monaural signal : 300Hz, 245mVrms adjustment "D02"...

  • Page 11: Chassis Layout

    20R-S100S CHASSIS LAYOUT...

  • Page 12: Block Diagram

    20R-S100S BLOCK DIAGRAM...

  • Page 13: Schematic Diagrams

    20R-S100S 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 14 20R-S100S SCHEMATIC DIAGRAM: MAIN Unit NOTE COMBINATION IC201 RH-iX3354CEZZ RH-iX3354CEN1 C211 VCKYCY1HB102K(1000p) C301 VCCCCY1HH470J(47p) VCCCCY1HH220J(22p) C304 VCCCCY1HH470J(47p) VCCCCY1HH220J(22p) C802 VCEA0A1CW106M(10 (16V)) R209 VRS-CY1JF123J(12k) VRS-CY1JF000J(0) R302 VRS-CY1JF332J(3.3k) VRS-CY1JF152J(1.5k) R413 VRS-CY1JF152J(1.5k) VRS-CY1JF222J(2.2K)
  • Page 15 20R-S100S SCHEMATIC DIAGRAM: MTS MODULE Unit...
  • Page 16 20R-S100S SCHEMATIC DIAGRAM: CRT Unit...

  • Page 17: Printed Wiring Board Assemblies

    20R-S100S PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) PWB-B: CRT Unit (Chip Parts Side) PWB-E: MTS MODULE Unit PWB-E: MTS MODULE Unit (Wiring Side) (Chip Parts Side)
  • Page 18 20R-S100S PWB-A: MAIN Unit (Wiring Side)
  • Page 19 20R-S100S PWB-A: MAIN Unit (Chip Parts Side)

  • Page 20: Replacement Parts List

    R302 VRS-CY1JF332J(3.3k) VRS-CY1JF152J(1.5k) in USA: Contact your nearest SHARP Parts Distributor to order. R413 VRS-CY1JF152J(1.5k) VRS-CY1JF222J(2.2K) For location of SHARP Parts Distributor, Please call Toll- IC351 VHiAN7511//-1 J AN7511 Free; 1-800-BE-SHARP IC501 VHiLA7840//-1 J LA7840 å IC701 VHiTEA1507/-1 J TEA1507P/N1 å...
  • Page 21 20R-S100S Ref. No. Part No. Description Code Ref. No. Part No. Description Code FILTERS AND COILS PWB-A: DUNTKA358WEW2 CF2040 RFiLA0099CEZZ J Ceramic Filter MAIN UNIT (Continued) RFiLC0121GEZZ DIODES L201 VP-XF1R2K0000 J Peaking 1.2µH RH-EX0676GEZZ J Zener Diode, 32V L202 VP-XF1R2K0000 J Peaking 1.2µH...
  • Page 22 20R-S100S Ref. No. Part No. Description Code Ref. No. Part No. Description Code C802 VCEA0A1CW106M J 10 PWB-A: DUNTKA358WEW2 (IC201:iX3354CEN1) MAIN UNIT (Continued) C807 VCKYCY1EF104Z J 0.1 Ceramic C808 VCEA0A1CW106M J 10 C451 VCQYTA1HM563K J 0.056 50V Mylar C811 VCKYCY1CB473K J 0.047 16V...
  • Page 23 20R-S100S Ref. No. Part No. Description Code Ref. No. Part No. Description Code R736 VRD-RM2HD184J J 180k 1/2W Carbon PWB-A: DUNTKA358WEW2 R737 VRN-VV3ABR39J J 0.39 1W M-Film å MAIN UNIT (Continued) R739 VRD-RM2HD332J J 3.3k 1/2W Carbon R740 VRD-RM2HD470J J 47...

  • Page 24: Crt Unit

    20R-S100S Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B: DUNTKA359WEW2 PWB-A: DUNTKA358WEW2 CRT UNIT MAIN UNIT (Continued) R2501 VRS-CY1JF123J J 12k 1/16W M-Ox. TRANSISTORS R2503 VRS-CY1JF273J J 27k 1/16W M-Ox. Q852 VSBF422////-1 J BF422 R2504 VRS-CY1JF123J J 12k 1/16W M-Ox.
  • Page 25 20R-S100S Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-E : DUNTKA070WEV2 MTS MODULE UNIT INTEGRATED CIRCUITS IC3001 VHiCXA2074Q-1 J CXA2074Q IC3371 VHiAN7511//-1 J AN7511 DIODES D3301 RH-EX0643GEZZ J Zener Diode, 13V CAPACITORS [EL.··· Electrolytic] C3001 VCE9GA1HW475M J 4.7 EL.

  • Page 26: Miscellaneous Parts

    ACC701 QACCD3064CESA J AC Cord CCABA0109WEH2 X Front Cabinet Ass’y å Not Available – Front Cabinet — QACCD3060CESA GCOVA0004GJSA X Cover for R/C HBDGB1001GJSB X Badge, ”SHARP” QACCD3090CESA JBTN-0004GJSA X Button(Power, Vol-up/down, AH VSP0080PBP7YA X Speaker(L), 32 ohm CH-up/down) VSP0080PBP7YA...

  • Page 27: Packing Of The Set

    20R-S100S Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C Unit Batteries Wrapping Paper Buffer Material FRONT Packing Case Use tape to fix the top side of packing case.
  • Page 28 Code Ref. No. Part No. Description Code COPYRIGHT © 2001 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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