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Sharp 32UC4 Service Manual
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Sharp 32UC4 Service Manual

Sharp 32UC4 Service Manual

Color television
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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
» WAVEFORMS ..................................................................................................................................... 13
» CHASSIS LAYOUT ............................................................................................................................. 14
» BLOCK DIAGRAM .............................................................................................................................. 15
» DESCRIPTION OF SCHEMATIC DIAGRAMS ................................................................................... 16
» SCHEMATIC DIAGRAMS ................................................................................................................... 17
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 26
» REPLACEMENT PARTS LIST ............................................................................................................ 30
» PACKING OF THE SET ...................................................................................................................... 39
POWER INPUT ..................................................... 120V AC, 60 Hz
POWER RATING .................................................................. 135W
PICTURE SIZE ............................................ 3073cm
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 .............. 3.0W + 3.0W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

MODEL
CONTENTS

ELECTRICAL SPECIFICATIONS

SPEAKER
SIZE ........................................................ 12 x 6 cm oval (2 pcs.)
2
(476sq inch)
VOICE COIL IMPEDANCE ............................ 16 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)
Specifications are subject to change without
Dual CH Operate)
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
32UC4
(EIA, Channel Plan U.S.A.)
32UC4
S43Z732UC4///
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Summary of Contents for Sharp 32UC4

  • Page 1: Table Of Contents

    32UC4 SERVICE MANUAL S43Z732UC4/// COLOR TELEVISION Chassis No. GB-3U 32UC4 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

    32UC4 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

    32UC4 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

    32UC4 LOCATION OF USER'S CONTROL Front Panel POWER Press VIDEO/AUDIO IN 2 TERMINALS Press again Off. REMOTE CONTR SENSOR CHANNEL UP/DOWN MENU Press Accesses MAIN MENU. ( ) Selects next higher channel. VOLUME UP/DOWN " Press again Exits MAIN MENU.

  • Page 5: Installation And Service Instructions

    32UC4 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 32UC4 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 TINT-S 0-127 (00h-7Fh) 62 (3Eh) S terminal input. C-TRAP 0-1 (00h-01h) 0 (00h) AUTO FLESH 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 32UC4 DATA SERVICE FIXED VALUE ADJUSTMENT ITEM NOTE NUMBER (HEX) RANGE INITIAL VALUE EW CORNER BOTTOM 19-81 (13h-51h) 50 (32h) Offset toward D13. NOISE DET LEVEL 0-3 (00h-03h) 0 (00h) V CENTERING 0-63 (00h-3Fh) 36 (24h) V-AGC 0-1 (00h-01h) 0 (00h) B.
  • Page 9 32UC4 Holding down both the VOL-up and CH-up buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2101. ADJUSTMENT PART REPLACED NOTES NECESSARY UNNECESSARY IC2001 Data is stored in IC2101.

  • Page 10: Service Adjustment

    32UC4 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: Mts Adjustment

    32UC4 Ë MTS ADJUSTMENT C. C Display Position Adjustment 1. Receive the lion head pattern signal. 2. Select "EX2" to display the text box. MTS Level Adjustment 3. Adjust the "EX2" bus data to let the text box displayed 1. Set the sound volume above 1.
  • Page 12 32UC4 Ë P-IN-P ADJUSTMENT P-IN-P Y-LEVEL Adjustment 1. Receive a good local channel. 2. Enter the service mode and select the service adjustment "P01". 3. Adjust "P01" data value to obtain normal contrast level. P-IN-P TINT Adjustment 1. Receive a good local channel.

  • Page 13: Waveforms

    32UC4 WAVEFORMS...

  • Page 14: Chassis Layout

    32UC4 CHASSIS LAYOUT...

  • Page 15: Block Diagram

    32UC4 BLOCK DIAGRAM...

  • Page 16: Description Of Schematic Diagrams

    32UC4 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 17: Schematic Diagrams

    32UC4 SCHEMATIC DIAGRAM: CRT Unit...
  • Page 18 32UC4 SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 19 32UC4...
  • Page 20 32UC4 SCHEMATIC DIAGRAM: MAIN-2 Unit...
  • Page 21 32UC4...
  • Page 22 32UC4 SCHEMATIC DIAGRAM: 2 LINE Y/C Unit...
  • Page 23 32UC4...
  • Page 24 32UC4 SCHEMATIC DIAGRAM: P-IN-P Unit...
  • Page 25 32UC4...

  • Page 26: Printed Wiring Board Assemblies

    32UC4 PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN Unit (Components Side)
  • Page 27 32UC4 PWB-A: MAIN Unit (Chip Parts Side)
  • Page 28 32UC4 PWB-B: CRT Unit (Wiring Side) PWB-D: 2 LINE Y/C Unit (Wiring Side) PWB-D: 2 LINE Y/C Unit (Chip Parts Side)
  • Page 29 32UC4 PWB-R: P-IN-P Unit (Wiring Side) PWB-R: P-IN-P Unit (Chip Parts Side)

  • Page 30: Replacement Parts List

    X I.C. ' å IC751 VHiPQ09RD11-1 X PQ09RD11 IC900 VHiCXA2089Q-2Y X CXA2089Q-6T in USA: Contact your nearest SHARP Parts Distributor to order. For IC1403 VHiPQ05RD11-1 X PQ05RD11 location of SHARP Parts Distributor, Please call Toll-Free; 1- IC2001 RH-iXA418WJZZQ X TMP88CS38BFG 800-BE-SHARP...
  • Page 31 32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEV8 VCEA0A1HW475M+X 4.7 Electrolytic VCEA0A0JW108M+ X 1000 6.3V Electrolytic MAIN UNIT(Continued) VCKYCY1HF103Z X 0.01 Ceramic VCKYPA1HF103Z+ X 0.01 Ceramic C101 VCEA0A0JW108M+ X 1000 6.3V Electrolytic D510...
  • Page 32 32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WE8 C906 VCKYCY1HB681K X 680p 50V Ceramic C907 VCEA0A1HW105M+X 1 Electrolytic MAIN UNIT(Continued) C908 VCKYCY1HB103K X 0.01 Ceramic C909 VCEA0A1HW105M+X 1 Electrolytic C607 VCKYPA1HB472K+ X 4700p 50V...
  • Page 33 32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEV8 R446 VRS-CY1JF332J X 3.3k 1/16W Metal Oxide R447 VRS-CY1JF101J X 100 1/16W Metal Oxide MAIN UNIT(Continued) R448 VRS-CY1JF101J X 100 1/16W Metal Oxide R449 VRS-CY1JF101J...
  • Page 34 32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567W8 R943 VRS-CY1JF101J X 100 1/16W Metal Oxide R944 VRS-CY1JF223J X 22k 1/16W Metal Oxide MAIN UNIT(Continued) R945 VRS-CY1JF101J X 100 1/16W Metal Oxide R946 VRS-CY1JF103J...

  • Page 35: Crt Unit

    32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A: DUNTKB567WEV8 PWB-B: DUNTKB568WEV1 MAIN UNIT(Continued) CRT Unit R2404 VRD-RA2BE101J X 100 1/8W Carbon R2501 VRS-CY1JF183J X 18k 1/16W Metal Oxide TRANSISTORS R2502 VRS-CY1JF183J X 18k 1/16W Metal Oxide...
  • Page 36 32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-B: DUNTKB568WEV1 C1425 VCCCCY1HH820J X 82p Ceramic C1429 VCEA0A1CW107M+X 100 Electrolytic CRT UNIT(Continued) C1430 VCKYCY1CB104K X 0.1 Ceramic C1431 VCKYCY1HB103K X 0.01 Ceramic C1432 VCKYCY1HB103K X 0.01...
  • Page 37 32UC4 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-R: DUNTKA533WEA3 R1833 VRS-CY1JF272J X 2.7k 1/16W Metal Oxide R1834 VRS-CY1JF222J X 2.2k 1/16W Metal Oxide P-IN-P UNIT(Continued) R1841 VRS-CY1JF153J X 15k 1/16W Metal Oxide R1842 VRS-CY1JF471J X 470 1/16W Metal Oxide C1803 VCKYCY1HB103K X 0.01...

  • Page 38: Miscellaneous Parts

    Not Available - Front Cabinet — VSP1206PB69WA X Speaker (R) GCOVA0119GJKA X RC/LED Cover QCNW-0136GJZZ X Connecting Cord (S) HBDGB1009MESB X "SHARP" Badge QCNW-0237MEZZ X Connecting Cord (DY) JBTN-0119GJKA X Button, Power QCNW-B126WJZZ X Connecting Cord (CJ) JBTN-0120GJKA X Button, Menu...

  • Page 39: Packing Of The Set

    32UC4 PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C unit Batteries Polyethylene Mat 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 40 32UC4 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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