Sharp LC-32HT1U Service Manual

Lcd color television

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In the interests of user-safety (Required by safety regulations in some countries) the set should be re-

stored to its original condition and only parts identical to those specified should be used.

This model is based on the LC-32D4U and is equipped with a redesigned speaker.This Service

Manual covers the modifications alone. For the other points, refer to the LC-32D4U Service Manual.

» LIST OF CHANGED PARTS ....................................................................................................................... 2

» IMPORTANT SERVICE SAFETY PRECAUTION ...................................................................................... 3

» SPECIFICATIONS ...................................................................................................................................... 6

» OPERATION MANUAL ............................................................................................................................... 7

» DIMENSIONS ........................................................................................................................................... 12

» REMOVING OF MAJOR PARTS .............................................................................................................. 13

» TROUBLESHOOTING TABLE ................................................................................................................. 17

» OVERALL WIRING DIAGRAM ................................................................................................................. 18

» SYSTEM BLOCK DIAGRAM .................................................................................................................... 20

» DIGITAL BLOCK DIAGRAM ..................................................................................................................... 22

» DESCRIPTION OF SCHEMATIC DIAGRAM ........................................................................................... 25

» SCHEMATIC DIAGRAM ........................................................................................................................... 26

» PRINTED WIRING BOARD ASSEMBLIES .............................................................................................. 54

» PARTS LIST ..............................................................................................................................................72

» PACKING OF THE SET ............................................................................................................................ 82

SHARP CORPORATION

SERVICE MANUAL

LCD COLOR TELEVISION

LC-32HT1U

MODEL

OUTLINE

CONTENTS

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

LC-32HT1U

SY5Q5LC32HT1U

Page

Table of Contents

Summary of Contents for Sharp LC-32HT1U

Page 1: Table Of Contents
LC-32HT1U SERVICE MANUAL SY5Q5LC32HT1U LCD COLOR TELEVISION LC-32HT1U MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identical to those specified should be used.
Page 2: List Of Changed Parts
LC-32HT1U LIST OF CHANGED PARTS LC-32D4U ➔ LC-32HT1U Ref.No Description LC-32D4U LC-32HT1U Note PWB ASSEMBLIES DIGITAL Unit DUNTKD331FE13 DUNTKD331FE20 Some parts changed AV Unit DUNTKD352DE18 DUNTKD352WE21 Some parts changed KEY Unit DUNTKD353DE18 DUNTKD353WE01 No parts changed R/C, LED Unit DUNTKD354DE18...
Page 3: Important Service Safety Precaution
LC-32HT1U IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thor- oughly familiar with all safety checks and the servicing guidelines which follow: » Use an AC voltmeter having with 5000 ohm per volt,...
Page 4 LC-32HT1U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ë Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à...
Page 5 LC-32HT1U Precautions for using lead-free solder 1 Employing lead-free solder "PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.
Page 6: Specifications
+32°F to +104°F (0°C to +40°C) • As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production...
Page 7: Operation Manual
LC-32HT1U Operation Manual...
Page 8 LC-32HT1U...
Page 9 LC-32HT1U...
Page 10 LC-32HT1U...
Page 11 LC-32HT1U...
Page 12: Dimensions
LC-32HT1U Dimensions Unit: inch/(mm) 631) 108) 807) 700.4) 114)
Page 13: Removing Of Major Parts
LC-32HT1U REMOVING OF MAJOR PARTS 1. Remove the AC Cover and Jack Cover 1. 2. Detach the SD Card Cover 2. 3. Remove the 1 lock screw 3 and detach the Bracket Cover . 4. Remove the 4 lock screws 4 and detach the Stand.
Page 14 LC-32HT1U 7. Remove the 7 lock screws 0 and detach the Center Angle. 8. Detach the LCD Control Shield q. 9. Remove the 1 Rivet w from the Main Shield A and detach the Wire Holder. Remove the 5 lock screws e and detach the Main Shield A.
Page 15 LC-32HT1U 12. Remove the 4 lock screws t and detach the Digital PWB. 13. Remove the 4 lock screws y and FFC. Detach the Main Shield B. 14. Remove the 3 lock screws u and detach the Jack Cover C, and Earth Spring C.
Page 16 LC-32HT1U 20. Remove the 2 lock screws j and detach the SP (R) Terminal PWB. 21. Remove the 3 lock screws k and detach the Speaker Brackt (R). 22. Remove the 2 lock screws l and detach the SP (L) Terminal PWB.
Page 17: Troubleshooting Table
LC-32HT1U TROUBLESHOOTING TABLE o Picture/Sound signals of PPV come out o PPV- RemoteControl(R/C) signal of PPV comes out...
Page 18: Overall Wiring Diagram
LC-32HT1U LC-32HT1U OVERALL WIRING DIAGRAM KEY UNIT FPC : QPW MC494WJPZ FPC : QW MC494WJPZ LCD CONTROL UNIT INVERTER UNIT QCNW-D784WJQZ QCNW-D772WJQZ QCNW-D769WJQZ QCNW-D775WJQZ CN7502 S-VIDEO To LAMP QCNW-D776WJQZ AV UNIT CN7501 V-IN3 To LAMP MON.-OUT P3801 QCNW-D779WJQZ P9001 P3102...
Page 19: System Block Diagram
LC-32HT1U LC-32HT1U SYSTEM BLOCK DIAGRAM +2.5V IC3302 14.318MHz MAIN Xtal IXB375WJ IC3800 128Mbit SDA3, AV SWITCH SCL3 MM1630AQ Tuner A +3.3V +2.5V +1.8V CVBS PANEL AFT,AGC (ALPS) Tuner IC3201 IC3202 LVDS Main Y/V Y/VOUT1 Disclete CVBS1 LVDS OUT LVDS CVBS...
Page 20: Digital Block Diagram
LC-32HT1U LC-32HT1U DIGITAL BLOCK DIAGRAM...
Page 21 LC-32HT1U - M E M O -...
Page 22: Description Of Schematic Diagram
LC-32HT1U DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
Page 23: Schematic Diagram
LC-32HT1U LC-32HT1U SCHEMATIC DIAGRAM DIGITAL Unit 1/17...
Page 24 LC-32HT1U LC-32HT1U DIGITAL Unit 2/17...
Page 25 LC-32HT1U LC-32HT1U DIGITAL Unit 3/17...
Page 26 LC-32HT1U LC-32HT1U DIGITAL Unit 11/17...
Page 27 LC-32HT1U LC-32HT1U DIGITAL Unit 12/17...
Page 28 LC-32HT1U LC-32HT1U DIGITAL Unit 15/17...
Page 29 LC-32HT1U LC-32HT1U AV Unit 1/6...
Page 30 LC-32HT1U LC-32HT1U AV Unit 2/6...
Page 31 LC-32HT1U LC-32HT1U AV Unit 3/6...
Page 32 LC-32HT1U LC-32HT1U AV Unit 4/6...
Page 33 LC-32HT1U LC-32HT1U AV Unit 5/6...
Page 34 LC-32HT1U LC-32HT1U AV Unit 6/6...
Page 35 LC-32HT1U SP(L) Terminal Unit...
Page 36 LC-32HT1U SP(R) Terminal Unit...
Page 37 LC-32HT1U LC-32HT1U DIGITAL Sub Unit...
Page 38 LC-32HT1U LC-32HT1U PRINTED WIRING BOARD ASSEMBLIES AV Unit (Side-A)
Page 39 LC-32HT1U LC-32HT1U C5727 TEST4 LUG1105 C5738 C5721 Q5754 SC5702 IC5703 Q5753 IC5706 C5708 C5705 IC5701 C2709 R2787 C2714 FB2700 R2788 IC2701 C2946 R1903 C2945 R2789 R2773 R2708 FB1900 IC2700 C2735 R2739 C2724 X1901 C2578 C1900 C2524 C1974 IC2709 R2549 R2560...
Page 40 LC-32HT1U LC-32HT1U L5750 L5754 L5721 L5743 L5722 L5718 L5724 L5720 L5719 L5742 L5741 L5740 L5733 L2717 L2715 L2716 P1903 L5703 L5708 P1900 L1903 L5710 L1902 L5706 L5711 L1960 L1961 L5737 L1901 P1904 L5709 L5729 L5734 L3802 L3800 L573 L5707 L573...
Page 41 LC-32HT1U SP (L) Terminal (Side-A) LUG204 SP (L) Terminal (Side-A Chip) SP (L) Terminal (Side-B) TL203 D205 TL207 C209 C207 TL206 FB206 TL204 TL205 FB205 D206 C208 SP (L) Terminal (Side-B Chip)
Page 42 LC-32HT1U SP (R) Terminal (Side-A) LUG203 SP (R) Terminal (Side-A Chip) SP (R) Terminal (Side-B) C211 TL212 D208 TL210 C210 FB20 7 TL208 FB20 8 TL209 C212 TL211 D207 SP (R) Terminal (Side-B Chip)
Page 43 LC-32HT1U LC-32HT1U MAIN Unit (Side-A)
Page 44 LC-32HT1U LC-32HT1U LUG1801 LUG1804 LUG1805 C3732 C3743 P3702 X3700 IC3708 P1002 C3745 C3746 C3744 SC3701 3795 3735 3732 3726 IC3705 3716 3710 3709 3242 C1826 3720 Q3708 Q3705 3249 C3719 C3389 Q3701 C1827 3717 C3702 C3710 3387 3247 C3706 3739...
Page 45 LC-32HT1U LC-32HT1U MAIN Unit (Side-B)
Page 46 LC-32HT1U LC-32HT1U E1806 E1804 LUG1811 LUG1810 LUG1807 C3742 R3734 R3736 R3723 C3245 R3724 R3728 R3245 IC3303 R3727 R3711 C3373 R3386 C3380 Q3707 C3248 R3712 C3403 C3401 C3405 C3374 FB1804 R3725 Q3706 R3243 R3721 R3382 R3268 C3381 C3399 C3386 C3247 C3739...
Page 47 LC-32HT1U DIGITAL Sub Unit (Side-A)
Page 48 LC-32HT1U LUG10 IC10 LUG11 DIGITAL Sub Unit (Side-A Chip)
Page 49: Printed Wiring Board Assemblies
4. DESCRIPTION in USA: Contact your nearest SHARP Parts Distributor to order. in CANADA: Contact SHARP Electronics of Canada Limited For location of SHARP Parts Distributor, Please call Toll- Phone (416) 890-2100 Free; 1-800-BE-SHARP ★ MARK: SPARE PARTS-DELIVERY SECTION ★ MARKIERUNG : ERSATZTEILE-LIEFERUNG ★...
Page 50 LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code C8122 VCKYCY1AB105KY J 1 Ceramic DUNTKD331FE20 C8123 VCKYCZ1AB104KY J 0.1 Ceramic DIGITAL Unit (Continued) C8124 VCKYCZ1CF104ZY J 0.1 Ceramic C8126 RC-KZA067WJZZY J 4.7 Ceramic TRANSISTORS C8133 VCKYCZ1CF104ZY J 0.1...
Page 51 LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code C8677 VCKYCZ1HB471KY J 470p Ceramic DUNTKD331FE20 C8678 VCKYCZ1HB471KY J 470p Ceramic DIGITAL Unit (Continued) C8679 VCKYCZ1HB471KY J 470p Ceramic C8680 VCKYCZ1HB471KY J 470p Ceramic C8681 VCKYCZ1HB471KY J 470p Ceramic C8455 VCKYCZ1CF104ZY J 0.1...
Page 52 LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code R8170 VRK-CD1JJ470JY J 47 1/16W Metal Composition AC DUNTKD331FE20 R8171 VRK-CD1JJ470JY J 47 1/16W Metal Composition AC DIGITAL Unit (Continued) R8172 VRS-CZ1JF470JY J 47 1/16W Metal Oxide...
Page 53 LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code R8801 VRS-CZ1JF470JY J 47 1/16W Metal Oxide DUNTKD331FE20 R8802 VRS-CZ1JF470JY J 47 1/16W Metal Oxide DIGITAL Unit (Continued) R8803 VRS-CZ1JF103JY J 10k 1/16W Metal Oxide...
Page 54 LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code FB8607 RBLN-0253TAZZY J Ferrite Beads DUNTKD331FE20 FB8608 RBLN-0253TAZZY J Ferrite Beads DIGITAL Unit (Continued) FB8609 RBLN-0253TAZZY J Ferrite Beads FB8610 RBLN-0253TAZZY J Ferrite Beads FB8701 RBLN-0254TAZZY...
Page 55: Main Unit
LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKD352WE21 DUNTKD537FE01 AV Unit DIGITAL Sub Unit INTEGRATED CIRCUIT INTEGRATED CIRCUITS IC1913 VHi24LC2BiN9ES J i24LC2BiN IC10 VHiA89S8253-1Y J iA89S8253 IC11 VHiVHCT08AT-1Y J iVHCT08AT TRANSISTORS DIODES AND LED'S...
Page 56: Cabinet And Mechanical Parts
PSPAZA663WJKZ X Heat Sink, x2 Not Available – Front Cabinet — (For IC2502/IC3301) Not Available – Badge, SHARP — QCNW-D078WJQZ X Connectiong Cord (SP) PSPAHA298WJZZ X Mask Spacer, x2 QCNW-D080WJQZ X Connectiong Cord (DA/DS) AU PSPAHA407WJZZ X Mask Spacer, x2...
Page 57 LC-32HT1U CABINET AND MECHANICAL PARTS 64-2 64-1 4-1-3 4-1-2 4-1-1 4-2-1 4-2-2 4-2-3 4-2-5 4-2-4 4-2-3 4-2-5...
Page 58: Packing Parts
LC-32HT1U ★ ★ Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING PARTS SUPPLIED ACCESSORIES (NOT REPLACEMENT ITEM) å X1 QACCDA039WJPZ X AC Cord SPAKCC330WJZZ – Pack Case — LHLDW0110CESD X Cable Clamp SPAKFA636WJZZ – Accessories Case —...
Page 59: Packing Of The Set
LC-32HT1U PACKING OF THE SET ★ ★ ★ ★ ★ ★ ★ ★ ★ Not Replacement item ★ ★...
Page 60 LC-32HT1U...
Page 61 LC-32HT1U COPYRIGHT © 2006 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 LC-32HT1U Service Manual

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SERVICE MANUAL

LCD COLOR TELEVISION

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Summary of Contents for Sharp LC-32HT1U

Table of Contents