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Sharp 27F830 Service Manual

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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
» SERVICE ADJUSTMENT ................................................................................................................... 10
» CHASSIS LAYOUT ............................................................................................................................. 13
» BLOCK DIAGRAM .............................................................................................................................. 14
» DESCRIPTION OF SCHEMATIC DIAGRAM ...................................................................................... 15
» WAVEFORMS ..................................................................................................................................... 16
» SCHEMATIC DIAGRAMS ................................................................................................................... 17
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 28
» REPLACEMENT PARTS LIST ............................................................................................................ 33
» PACKING OF THE SET ...................................................................................................................... 43
POWER INPUT ..................................................... 120V AC, 60 Hz
POWER RATING .................................................................. 135W
PICTURE SIZE ....................................... 2,193.5 cm
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 .............. 5.0W + 5.0W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

MODEL
CONTENTS

ELECTRICAL SPECIFICATIONS

SPEAKER
SIZE ........................................................ 12 x 6 cm oval (2 pcs.)
2
(339sq inch)
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
(Nominal)
Dual CH Operate)
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.
COLOR TELEVISION
Chassis No. GB-3U
27F830
(EIA, Channel Plan U.S.A.)
27F830
S13V827F830//
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Summary of Contents for Sharp 27F830

  • Page 1: Table Of Contents

    27F830 SERVICE MANUAL S13V827F830// COLOR TELEVISION Chassis No. GB-3U 27F830 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

    27F830 IMPORTANT SERVICE SAFETY PRECAUTION Ë 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

    27F830 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

    27F830 LOCATION OF USER'S CONTROL Front Panel INSIDE DOOR POWER Press Press again Off. VIDEO/AUDIO IN 2 TERMINALS REMOTE CONTROL SENSOR MENU CHANNEL UP/DOWN (') Selects next higher Press Accesses MAIN MENU. VOLUME UP/DOWN channel. Press again Exits MAIN MENU.

  • Page 5: Installation And Service Instructions

    27F830 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 27F830 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-B" to determine, if serv- ice adjustments are required.
  • Page 7 0-63 (00h-3Fh) 50 (32h) ANT-A Input ANT-A BRIGHT 0-127 (00h-7Fh) 77 (4Dh) ANT-A Input AUTO FRESH 0-1 (00h-01h) 0 (00h) SHARP P F 0-1 (00h-01h) 1 (01h) CD MATRIX 0-3 (00h-03h) 2 (02h) B-Y ATT 0-1 (00h-01h) 0 (00h) R-Y ATT...
  • Page 8 27F830 DATA SERVICE NOTES FIXED VALUE ADJUSTMENT ITEM NUMBER RANGE (HEX) INITIAL VALUE AFC GAIN 0-3 (00h-03h) 2 (02h) V EHT 0-7 (00h-07h) 6 (06h) H EHT 0-7 (00h-07h) 6 (06h) EW CORNER 0-31 (00h-1Fh) 8(08h) EW CORNER BOTTOM 19-81 (13h-51h) 50 (32h) Offset toward D13.
  • Page 9 27F830 DATA SERVICE NOTES FIXED VALUE ADJUSTMENT ITEM NUMBER RANGE (HEX) INITIAL VALUE BBE-L Effect 0-15 (00h-0Fh) 15 (0Fh) BBE-H Effect 0-15 (00h-0Fh) 15 (0Fh) AGC Level 0-7 (00h-07h) 1 (01h) BASS Offset 0-31 (00h-1Fh) 15 (0Fh) TREBLE Offset 0-31 (00h-1Fh)

  • Page 10: Service Adjustment

    27F830 SERVICE ADJUSTMENT RF AGC Adjustment Sub-picture and Sub-Bright Adjustments 1. Receive a good local channel. 1. Receive the window pattern signal. 2. Enter the service mode and select the service RF INPUT (TU51) adjustment "R01". 2. Get into service adjustment data "V01" and "V05" and 3.
  • Page 11 27F830 Focus Adjustment Horizontal-Size Adjustment 1. Receive a good local channel. 1. Receive a good local channel. 2. Adjust the FOCUS VR of the flyback transformer to (SCREEN FORMAT 4:3) make the image as fine as possible. 2. Enter the service mode and select the service adjustment "D04"...

  • Page 12: Mts Adjustment

    27F830 Ë MTS ADJUSTMENT Ë P-IN-P ADJUSTMENT MTS Level Adjustment P-IN-P Y-LEVEL Adjustment 1. Set the sound volume above 1. 1. Receive a good local channel. 2. Enter the service mode and select the service Monoral signal: 400Hz, 100% modulation 2.

  • Page 13: Chassis Layout

    27F830 CHASSIS LAYOUT...

  • Page 14: Block Diagram

    27F830 BLOCK DIAGRAM...

  • Page 15: Description Of Schematic Diagram

    27F830 DESCRIPTION OF SCHEMATIC DIAGRAM 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 16: Waveforms

    27F830 WAVEFORMS 11.0 Vp-p 22.1 Vp-p 3 1.0Vp-p 40.75 Vp-p 55.0 Vp-p 65.0 Vp-p 70.85 Vp-p 812.5 Vp-p 932 Vp-p 056 Vp-p q2.0 Vp-p w0.8 Vp-p e160 Vp-p r14 Vp-p t1150 Vp-p y450 Vp-p u250 Vp-p i29.5 Vp-p o3.0 Vp-p p3.0 Vp-p...

  • Page 17: Schematic Diagrams

    27F830 SCHEMATIC DIAGRAM: CRT Unit...
  • Page 18 27F830 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 19 27F830...
  • Page 20 27F830 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 21 27F830...
  • Page 22 27F830 SCHEMATIC DIAGRAM: 3 LINE Y/C Unit...
  • Page 23 27F830...
  • Page 24 27F830 SCHEMATIC DIAGRAM: P-IN-P Unit...
  • Page 25 27F830...
  • Page 26 27F830 SCHEMATIC DIAGRAM: 2-TUNER Unit...
  • Page 27 27F830 SCHEMATIC DIAGRAM: AUDIO Unit...

  • Page 28: Printed Wiring Board Assemblies

    27F830 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Components Side)
  • Page 29 27F830 PWB-A: MAIN Unit (Chip Parts Side)
  • Page 30 27F830 PWB-B: CRT Unit (Wiring Side) PWB-C: 3 LINE Y/C Unit (Wiring Side) PWB-C: 3 LINE Y/C Unit (Chip Parts Side)
  • Page 31 27F830 PWB-S: AUDIO Unit (Wiring Side) PWB-S: AUDIO Unit (Chip Parts Side) PWB-E: 2-TUNER Unit (Wiring Side)
  • Page 32 27F830 PWB-R: P-IN-P Unit (Wiring Side) PWB-R: P-IN-P Unit (Chip Parts Side)

  • Page 33: Replacement Parts List

    ' å IC703 VHiSE130N//-1 X SE130N IC751 VHiPQ09RD11-1 X PQ09RD11 in USA: Contact your nearest SHARP Parts Distributor to order. For IC900 VHiCXA2089Q-2Y X CXA2089Q-6T location of SHARP Parts Distributor, Please call Toll-Free; 1- IC1403 VHiPQ05RD11-1 X PQ05RD11 800-BE-SHARP IC2001 RH-iXA418WJZZQ X I.C.
  • Page 34 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code TRANSFORMERS PWB-A: DUNTKB567WEV5 å T601 RTRNZ0057PEZZ X Transformer MAIN UNIT (Continued) ' å T602 RTRNFA040WJZZ X H-Volt Transformer å T702 RTRNWA071WJZZ X Transformer D413 RH-EX0614GEZZ X Zener Diode, 5.6V...
  • Page 35 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code C807 VCKYCY1CF104Z X 0.1 Ceramic PWB-A: DUNTKB567WEV5 C808 VCKYCY1CF104Z X 0.1 Ceramic MAIN UNIT (Continued) C809 VCKYCY1CF104Z X 0.1 Ceramic C810 VCEA0A1CW477M+X 470 Electrolytic C509 VCKYCY1HB822K X 8200p 50V...
  • Page 36 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R308 VRS-CY1JF000J 1/16W Metal Oxide PWB-A: DUNTKB567WEV5 R361 VRD-RA2BE224J X 220k 1/8W Carbon MAIN UNIT (Continued) R362 VRS-CY1JF182J X 1.8k 1/16W Metal Oxide R363 VRS-CY1JF182J X 1.8k 1/16W Metal Oxide...
  • Page 37 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R764 VRD-RM2HD562J X 5.6k 1/2W Carbon PWB-A: DUNTKB567WEV5 R767 VRD-RM2HD151J X 150 1/2W Carbon MAIN UNIT (Continued) R768 VRD-RA2BE473J X 47k 1/8W Carbon R770 VRS-CY1JF102J X 1k...

  • Page 38: Crt Unit

    27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R3001 VRS-CY1JF221J X 220 1/16W Metal Oxide PWB-A: DUNTKB567WEV5 R3002 VRS-CY1JF221J X 220 1/16W Metal Oxide MAIN UNIT (Continued) R3003 VRS-CY1JF105J X 1M 1/16W Metal Oxide R3004 VRS-CY1JF104J...
  • Page 39 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R1529 VRS-VV3DB221J X 220 2W Metal Oxide å PWB-B: DUNTKA527WEV6 R1530 VRD-RA2BE122J X 1.2k 1/8W Carbon CRT UNIT (Continued) MISCELLANEOUS PARTS DIODES FB1501RBLN-0020CEZZ+ X Ferrite Bead D853...
  • Page 40 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code VCKYPA1HF103Z+ X 0.01 Ceramic PWB-C: DUNTKA573WEV0 VCE9GA1CW106M+X 10 Elect.(N,P) 3 LINE Y/C UNIT (Continued) VCEA0A1HW105M+X 1 Electrolytic VCQYTA1HM472J+ X 4700p 50V Mylar C1455 VCKYCY1HF103Z X 0.01 Ceramic VCQYTA1HM473J+ X 0.047 50V...
  • Page 41 27F830 Ref. No. Part No. Description Code Ref. No. Part No. Description Code R1865 VRS-CY1JF474J X 470k 1/16W Metal Oxide PWB-R: DUNTKA533WEA3 R1866 VRS-CY1JF104J X 100k 1/16W Metal Oxide P-IN-P UNIT(Continued) R1867 VRS-CY1JF202J X 2k 1/16W Metal Oxide R1868 VRS-CY1JF510J...

  • Page 42: Miscellaneous Parts

    CCABAA186WEH0 X Front Cabinet Ass’y VSP1206PB708A X Speaker (R) ———————— - Front Cabinet — QCNW-B013WJZZ X Connecting Cord HBDGB3141CESA X SHARP Badge QCNW-B020WJZZ X Connecting Cord GCOVAA282WJKA X RC Cover QCNW-B021WJZZ X Connecting Cord GCOVHA017WJKZ X Cover QCNW-B022WJZZ X Connecting Cord GDORFA027WJKA X Door...

  • Page 43: Packing Of The Set

    27F830 PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C Unit Batteries Polyethylene Sheet 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.
  • Page 44 27F830 COPYRIGHT © 2003 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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