Service manual

ManualsBrandsSharp ManualsCRT TV27R-FS1

27R-FS1

COLOR TELEVISION

Chassis No. V01A

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.

S61W527R-FS1/

SHARP CORPORATION

This document has been published to be used for after

sales service only.

The contents are subject to change without notice.

» ELECTRICAL SPECIFICATIONS ...........................................................................................................1

» IMPORTANT SERVICE SAFETY PRECAUTION ...................................................................................2

» LOCATION OF USER'S CONTROL .......................................................................................................4

» INSTALLATION AND SERVICE INSTRUCTIONS ..................................................................................5

» CHASSIS LAYOUT ...............................................................................................................................12

» BLOCK DIAGRAM ................................................................................................................................14

» SCHEMATIC DIAGRAMS .....................................................................................................................16

» PRINTED WIRING BOARD ASSEMBLIES ..........................................................................................28

» REPLACEMENT PARTS LIST ..............................................................................................................34

» PACKING OF THE SET ........................................................................................................................47

Page

CONTENTS

SERVICE MANUAL

27R-FS1

MODEL

ELECTRICAL SPECIFICATIONS

SPEAKER

SIZE ..................................................................... 10 cm (2 pcs.)

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

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

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

POWER RATING .................................................................. 134W

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

(192.2sq 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 .................... 5W + 5W (at 10% distortion and

Dual CH Operate)

Specifications are subject to change without

prior notice.

Summary of content (42 pages)

PAGE 1
27R-FS1 SERVICE MANUAL S61W527R-FS1/ COLOR TELEVISION Chassis No. V01A MODEL 27R-FS1 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
7R-FS1 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.
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27R-FS1 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.
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27R-FS1 LOCATION OF USER'S CONTROL Front Panel POWER Press → On. Press again → Off. VIDEO/AUDIO IN 2 TERMINALS SENSOR AREA FOR REMOTE CONTROL VOLUME UP/DOWN (+) Increases sound. (–) Decreases sound. (INSIDE DOOR) MENU. Press → Accesses MAIN MENU. Press again → Exits MAIN MENU. CHANNEL UP/DOWN (') Selects next higher channel. ( ) Selects next lower channel. ' Basic Remote Control Functions Infrared Transmitter Window POWER Press → On. Press again → Off.
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27R-FS1 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 6.3A fuse (F701), mounted on PWB-C, wired into one side of the AC line input.
PAGE 6
27R-FS1 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 adjustment is required. See "Table-C" to determine, if service adjustments are required. 1. Service Mode To enter the service mode and exit service mode.
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V28 V27 D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 D15 D16 V01 V02 V03 V04 V05 V06 V07 V08 V09 V10 V11 V12 V13 V14 V15 V16 V17 V18 V19 V20 V21 V22 V23 V24 V25 V26 SERVICE NUMBER PICTURE HEIGHT V-LINEARITY V-S CORRECTION PICTURE WIDTH E-W PARABOLA E-W CORNER TRAPEZIUM V-POSITION H-POSITION UPER MASK END LOWER MASK START LEFT MASK END RIGHT MASK START OFFSET V-POSITION OSD POSITION OSD SL PICTURE TINT COLOR BRIGHT R CUT-OFF G CUT-OFF B CUT-OFF G DRIVE B DRIVE Y-MUTE/V-OFF SHARPNESS OFFSET
PAGE 8
V32 M01 M02 M03 M04 M05 M06 OP01 OP02 OP03 OP04 OP05 V31 V30 V29 SERVICE NUMBER COLOR TEMPARATURE, B DRIVE OFFSET ML 9,300°K COLOR TEMPARATURE, G DRIVE OFFSET LOW 6,500°K COLOR TEMPARATURE, B DRIVE OFFSET LOW 6,500°K CHORMA RELATIVE PHASE/AMPLITUDE INPUT LEVEL (ATT) MTS VCO FILTER WIDE BAND SPECTRAL FAO LEVEL V-CHIP SCREEN FORMAT DEMO MODE ENGL/ESPA SYNC FIX at NO SIGNAL ADJUSTMENT ITEM 00~03 00~15 00~63 00~63 00~63 00~63 00~63 00~01 00~01 00~01 00~01 00~01 00~100 00~100 00~100 RANGE 00 09 28 28
PAGE 9
27R-FS1 SERVICE ADJUSTMENT Screen Adjustment Video-Tint Adjustment 1. Receive a good local channel. 2. Enter the service mode and select the service No. "V03" and set the data value to "00" to set the color level to minimum. (Record original data code under No. "V03" before changing) You may skip this step, if you selected a B/W picture or monoscope pattern. 3. Select the service No. "V10" and adjust the data value to "01", this turn off the luminance signal (Y-mute). 4. Select the service No.
PAGE 10
27R-FS1 Side Pincushion Adjustment Corner Distortion Adjustment 1. Receive a good CATV channel or crosshatch pattern signal. 2. Set to standard setting mode. 3. Enter the service mode and select the service No. "D05". 4. Adjust the data of service No. "D05" so that the outermost line on the screen be straight. 1. Receive a good CATV channel or crosshatch pattern signal. 2. Set to standard setting mode. 3. Enter the service mode and select the service No. "D06". 4.
PAGE 11
27R-FS1 Ë MTS ADJUSTMENT 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 No. "M01". 4. Adjust the data so that the rms voltmeter reads. Spec : 490 ±10mVrms. MTS VCO Adjustment 1. Keep the unit in no-signal state. 2. Connect the frequency counter to pin (39) of IC3001. 3.
PAGE 12
27R-FS1 CHASSIS LAYOUT H G F E D C B A 1 2 3 12 4 5 6 7 8 9 10 11 13 12
PAGE 13
27R-FS1 BLOCK DIAGRAM H G F E D C B A 1 2 3 14 4 5 6 7 8 9 10 11 15 12
PAGE 14
27R-FS1 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: 1. The unit of resistance "ohm" is omitted. (K=kΩ=1000Ω, M=MΩ) 2.
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27R-FS1 SCHEMATIC DIAGRAM: CRT Unit H G F E D C B A 1 2 3 4 17 5 6
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27R-FS1 SCHEMATIC DIAGRAM: MAIN Unit-1/3 H G F E D C B A 1 2 3 18 4 5 6 7 8 9 10 11 19 12
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27R-FS1 SCHEMATIC DIAGRAM: MAIN Unit-2/3 H G F E D C B A 1 2 3 20 4 5 6 7 8 9 10 11 21 12
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27R-FS1 SCHEMATIC DIAGRAM: MAIN Unit-3/3 H G F E D C B A 1 2 3 22 4 5 6 7 8 9 10 11 23 12
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27R-FS1 SCHEMATIC DIAGRAM: POWER Unit H G F E D C B A 1 2 3 24 4 5 6 7 8 9 10 11 25 12
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27R-FS1 SCHEMATIC DIAGRAM: MTS MODULE Unit H G F E D C B A 1 2 3 4 26 5 6
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27R-FS1 SCHEMATIC DIAGRAM: CONTROL Unit H G F E D C B A 1 2 3 4 27 5 6
PAGE 22
27R-FS1 PRINTED WIRING BOARD ASSEMBLIES H G F E D C B A PWB-A: MAIN Unit (Wiring Side) 1 2 3 4 28 5 6
PAGE 23
27R-FS1 H G F E D C B A PWB-A: MAIN Unit (Chip Parts Side) 1 2 3 4 29 5 6
PAGE 24
27R-FS1 H G F E D C PWB-B: CRT Unit (Wiring Side) B A 1 2 3 4 30 5 6
PAGE 25
27R-FS1 H G F E D C B PWB-C: POWER Unit (Wiring Side) A 1 2 3 4 31 5 6
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27R-FS1 H G F E D C B A PWB-F: CONTROL Unit (Wiring Side) 1 2 3 4 32 5 6
PAGE 27
R-FS1 H G F PWB-E: MTS MODULE Unit (Wiring Side) E D C B A PWB-E: MTS MODULE Unit (Chip Parts Side) 1 2 3 4 33 5 6
PAGE 28
27R-FS1 Ref. No. Part No. ★ Description Code Ref. No. TUNER NOTE: THE PARTS HERES SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT INDEPENDENTLY. å TU201 VTUVTBT5UF202 J Tuner 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.
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27R-FS1 Ref. No. ★ Part No. Description Code Ref. No.
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27R-FS1 Ref. No. Part No. ★ Description Code Ref. No.
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27R-FS1 Ref. No. ★ Part No. Description Code Ref. No.
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27R-FS1 Ref. No. Part No. ★ Description Code Ref. No.
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27R-FS1 Ref. No. Part No. ★ Description Code Ref. No.
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27R-FS1 Ref. No. ★ Part No. Description Code Ref. No.
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27R-FS1 Ref. No. ★ Part No. Description Code PWB-C: DUNTKA488FMF3 POWER UNIT Part No.
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27R-FS1 Ref. No. ★ Part No. Description Code Ref. No.
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27R-FS1 Ref. No. Part No. ★ Description Code Ref. No. ★ Part No.
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27R-FS1 Ref. No. Part No. ★ Description Code Ref. No. ★ Part No. Description PWB-E: DUNTKA591WEF0 PWB-F: DUNTKA489FMF3 MTS MODULE UNIT (Continued) CONTROL UNIT R3025 R3026 R3027 R3028 R3029 R3030 R3031 R3032 R3033 R3041 R3042 R3109 VRS-CY1JF152J VRS-CY1JF102J VRS-CY1JF183J VRS-CY1JF683J VRS-CY1JF183J VRS-CY1JF472J VRS-CY1JF152J VRS-CY1JF102J VRS-CY1JF331J VRS-CY1JF102J VRS-CY1JF102J VRS-CY1JF102J J J J J J J J J J J J J 1.5k 1.0k 18k 68k 18k 4.7k 1.5k 1.0k 330 1.0k 1.0k 1.
PAGE 39
27R-FS1 Ref. No. Part No. ★ Description Code Ref. No.
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27R-FS1 Ref. No. Part No. ★ Description Code Ref. No.
PAGE 41
27R-FS1 PACKING OF THE SET ★ Polyethylene Bag Operation Manual Infrared R/C unit Guarantee Card ★Batteries ★ Polyethylene Mat ★Buffer Material FRONT ★ Packing Case REAR MARK ★ : Not replacement items. 47 Use 22 staples to fix the bottom side of packing case.
PAGE 42
27R-FS1 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 D JAPAN P NSEC TQ1198-S Aug. 2001 Printed in Japan MI.