Service manual

ManualsBrandsSharp ManualsTV20R-S100S

20R-S100S

COLOR TELEVISION

Chassis No. SN-010

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.

S21P120R-S100

» 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

Page

SHARP CORPORATION

CONTENTS

SERVICE MANUAL

POWER INPUT .................................................... AC 120 V, 60 Hz

POWER RATING ................................................................... 74 W

PICTURE SIZE ........................................... 1,240cm

(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

OUTPUT RATING ..................... 1.5W + 1.5W (at 10% distortion

and Dual CH Operate)

ELECTRICAL SPECIFICATIONS

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

(EIA, Channel Plan U.S.A.)

MODEL

20R-S100S

This document has been published to be used for after

sales service only.

The contents are subject to change without notice.

Specifications are subject to change without

prior notice.

MTS STEREO

Summary of content (28 pages)

PAGE 1
20R-S100S SERVICE MANUAL S21P120R-S100 COLOR TELEVISION Chassis No. SN-010 MTS ST EREO 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. CONTENTS Page » ELECTRICAL SPECIFICATIONS ......................................................................................................... 1 » IMPORTANT SERVICE SAFETY PRECAUTION ................
PAGE 2
0R-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 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
20R-S100S IMPORTANT SERVICE SAFETY PRECAUTION (Continued) • Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. AII checks must be repeated with the AC line cord plug connection reversed. (If necessary, a nonpolarized adapter plug must be used only for the purpose of completing these check.) Any current measured must not exceed 0.
PAGE 4
20R-S100S LOCATION OF USER'S CONTROL Front Panel SENSOR AREA FOR REMOTE CONTROL MTS STEREO – POWER VOL V ID E O CH + L - A U D IO -R IN MENU VIDEO/AUDIO IN TERMINALS MENU CHANNEL UP/DOWN (') Selects next higher channel. ( ) Selects next lower channel. • Press both at the same time to access the MAIN MENU screen. VOLUME UP/DOWN (+) Increases sound. (–) Decreases sound. ' POWER Press → On. Press again → Off.
PAGE 5
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. 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 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. To enter the service mode and exit service mode. While pressing the Vol-up and Ch-up buttons at the sametime, plug the AC cord into a wall socket. Now, the TV set is switched on and enters the service mode.
PAGE 7
20R-S100S Below are the adjustments ranges and initial values for FIX VALUE category.
PAGE 8
20R-S100S FEATURE SERVICE POSITION M01 M02 M03 M04 M05 DATA ADJUST ITEM MS LEVEL MTS-VCO FILTER LOW SEPARATION HIGH SEPARATION RANGE INITIAL VALUE 00-0F 00-3F 00-3F 00-3F 00-3F 0A 20 1C 20 1B ADJUSTMENT CONTENTS 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
20R-S100S Ë SERVICE ADJUSTMENT RF AGC Adjustment White Balance Adjustment 1. Receive a good local channel. 2. Enter the service mode signal category and select the service adjustment "S01". 3. Set the data value to point where no noise or beat appears. 4. Select another channel to confirm that no noise or beat appears. Note: You have to exit the service mode first to select another channel. 1. Receive a good local channel. 2.
PAGE 10
20R-S100S Vertical-Size, V-Linearity and V-S Correction Adjustments Ë MTS ADJUSTMENT 1. Receive a good local channel. 2. Enter the service mode DEF category and select the adjustment "D02" for Vertical Size, "D05" for VLinearity and "D06" for V-S Correction Adjustment. 3. Set in order "D05" for V-Linearity, "D06" for V-S Correction and set the data to get the best linearity. 4. Then adjust "D02" data until it become a proper vertical size. 1. Feed the following monaural signal to pin (14) of IC3001.
PAGE 11
20R-S100S CHASSIS LAYOUT H G F E D C B A 1 2 3 4 11 5 6
PAGE 12
20R-S100S BLOCK DIAGRAM H G F E D C B A 1 2 3 4 12 5 6
PAGE 13
20R-S100S DESCRIPTION OF SCHEMATIC DIAGRAM WAVEFORM MEASUREMENT CONDITIONS: 1. Photographs taken on a standard gated color bar signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of the picture tube depend on the tint, color level and picture control. 2. indicates waveform check points (See chart, waveforms are measured from point indicated to chassis ground.) NOTES: H 1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ) 2.
PAGE 14
20R-S100S SCHEMATIC DIAGRAM: MAIN Unit H G F E D C NOTE IC201 C211 C301 C304 C802 R209 R302 R413 COMBINATION RH-iX3354CEZZ RH-iX3354CEN1 VCKYCY1HB102K(1000p) VCCCCY1HH470J(47p) VCCCCY1HH220J(22p) VCCCCY1HH470J(47p) VCCCCY1HH220J(22p) VCEA0A1CW106M(10 (16V)) VRS-CY1JF123J(12k) VRS-CY1JF000J(0) VRS-CY1JF332J(3.3k) VRS-CY1JF152J(1.5k) VRS-CY1JF152J(1.5k) VRS-CY1JF222J(2.
PAGE 15
20R-S100S SCHEMATIC DIAGRAM: MTS MODULE Unit H G F E D C B A 1 2 3 16 4 5 6 7 8 9 10 11 17 12
PAGE 16
20R-S100S SCHEMATIC DIAGRAM: CRT Unit H G F E D C B A 1 2 3 4 18 5 6
PAGE 17
20R-S100S PRINTED WIRING BOARD ASSEMBLIES H G F PWB-B: CRT Unit (Wiring Side) PWB-B: CRT Unit (Chip Parts Side) E D C B PWB-E: MTS MODULE Unit (Wiring Side) PWB-E: MTS MODULE Unit (Chip Parts Side) A 1 2 3 4 19 5 6
PAGE 18
20R-S100S H G F E D C B PWB-A: MAIN Unit (Wiring Side) A 1 2 3 4 20 5 6
PAGE 19
20R-S100S H G F E D C B PWB-A: MAIN Unit (Chip Parts Side) A 1 2 3 4 21 5 6
PAGE 20
R-S100S Ref. No. Part No. ★ Description Code Ref. No. ★ Part No. MAIN UNIT PARTS REPLACEMENT TUNER NOTE: THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT INDEPENDENTLY å TU51 VTUVTST5UF770 J Tuner or VTUENV56D82-1 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
20R-S100S Ref. No. ★ Part No. Description Code Ref. No.
PAGE 22
20R-S100S Ref. No. Description Code Ref. No.
PAGE 23
20R-S100S Ref. No. Part No. ★ Description Code Ref. No.
PAGE 24
20R-S100S Ref. No. ★ Part No. Description Code Ref. No. Description PWB-A: DUNTKA358WEW2 PWB-B: DUNTKA359WEW2 MAIN UNIT (Continued) CRT UNIT R2501 R2503 R2504 R2505 R2506 R2507 R2508 R2509 R2601 VRS-CY1JF123J VRS-CY1JF273J VRS-CY1JF123J VRS-CY1JF563J VRS-CY1JF563J VRS-CY1JF823J VRS-CY1JF153J VRS-CY1JF272J VRD-RA2BE331J J J J J J J J J J 12k 27k 12k 56k 56k 82k 15k 2.7k 330 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/8W M-Ox. M-Ox. M-Ox. M-Ox. M-Ox. M-Ox. M-Ox. M-Ox.
PAGE 25
20R-S100S Ref. No. ★ Part No. Description Code Ref. No. PWB-E : DUNTKA070WEV2 MTS MODULE UNIT INTEGRATED CIRCUITS IC3001 VHiCXA2074Q-1 IC3371 VHiAN7511//-1 J CXA2074Q J AN7511 AY AK DIODES D3301 RH-EX0643GEZZ J Zener Diode, 13V AB CAPACITORS C3001 C3002 C3003 C3004 C3005 C3006 C3007 C3008 C3009 C3010 C3011 C3012 C3013 C3014 C3015 C3016 C3017 C3018 C3374 C3376 C3377 C3378 [EL.··· Electrolytic] VCE9GA1HW475M J 4.7 50V VCKYCY1HB562K J 5600p 50V VCQYTA1HM123K J 0.012 50V VCEA0A1HW105M J 1.
PAGE 26
20R-S100S Ref. No. Part No. ★ Description Code Ref. No. MISCELLANEOUS PARTS å ACC701 QACCD3064CESA or QACCD3060CESA or QACCD3090CESA SP1 VSP0080PBP7YA SP2 VSP0080PBP7YA LHLDK0014PEZZ TCAUS3000GJZZ TLABM0002GJZZ TLABZ0109GJZZ QCNW-0114GJZZ QCNW-2111PEZZ QCNW-2160PEZZ QCNW-2208PEZZ J AC Cord X X J X X X X J J J Speaker(L), 32 ohm Speaker(R), 32 ohm AC Cord Holder Caution Card Label Label Connecting Cord Connecting Cord Connecting Cord Connecting Cord ★ Part No.
PAGE 27
20R-S100S Ref. No. Part No. ★ Description Code No. Part No. PACKING OFRef. THE SET ★ Description ★ 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. REAR Use 12 staples to fix the bottom side of packing case. ★ MARK : Not Replacement Items.
PAGE 28
20R-S100S Ref. No. Part No. ★ Description 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. SHARP CORPORATION AV Systems Group Quality & Reliability Control Center Yaita, Tochigi 329-2193, Japan TQ1077-S Feb.