Sharp 14EM4RU Service Manual
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Sharp 14EM4RU Service Manual

Sharp 14EM4RU Service Manual

Colour television sharp 14em4ru/ 21em4ru
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14EM4RU
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.
Ë Multi 18 systems
Ë Full Auto Channel Preset and Auto Channel Skip
Ë 100-CH Program Memory
Ë CATV(Hyper Band) Ready
<Used Frequency Synthesizer Tuner>
Ë AVL(Sound Keeper) Function
Ë Black Stretch Circuit
Ë On Timer/Off Timer/Reminder Timer
Ë Blue Back Noise Mute
» SPECIFICATIONS ............................................. 2
» IMPORTANT SERVICE NOTES ........................ 2
» ADJUSTMENT PRECAUTIONS ........................ 3
» MEMORY MAP ................................................ 11
» GA1 HOTEL MODE APPLICATION ................ 15
» TROUBLE SHOOTING TABLE ........................ 15
» WAVEFORMS .................................................. 18
» CHASSIS LAYOUT .......................................... 21
» BLOCK DIAGRAM ........................................... 23
Ë MAIN UNIT ................................................... 30
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user - serviceable
parts inside. Refer servicing to qualified service personnel.

SERVICE MANUAL

21EM4RU
MODELS
FEATURES
Ë Front Headphone Terminal
Ë Front AV-In & Rear AV-In/Out Terminals
Ë Colour Comb Filter(NTSC AV-THRU only)
Ë High Contrast Picture
Ë Hotel Mode
Ë English/Russian 2 Languages OSD
Ë White Temperature Adjustment
CONTENTS
Page
» PACKING OF THE SET ................................... 47
WARNING

SHARP CORPORATION

1
COLOUR TELEVISION
Chassis No. GA-1A
14EM4RU
21EM4RU
(Front Priority)
Ë CRT UNIT ..................................................... 34
Ë HEAD PHONE UNIT .................................... 35
Ë ELECTRICAL PARTS
MAIN UNIT ................................................... 41
CRT UNIT ..................................................... 45
HEAD PHONE UNIT .................................... 45
Ë MISCELLANEOUS PARTS .......................... 46
Ë SUPPLIED ACCESSORIES ......................... 46
Ë PACKING PARTS ......................................... 46
Ë CABINET PARTS ......................................... 46
14EM4RU
21EM4RU
S53C214EM4RU/
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  • Page 1: Table Of Contents

    14EM4RU 21EM4RU SERVICE MANUAL S53C214EM4RU/ COLOUR TELEVISION Chassis No. GA-1A 14EM4RU 14EM4RU 21EM4RU 21EM4RU MODELS 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: Specifications

    14EM4RU 21EM4RU...

  • Page 3: Adjustment Precautions

    14EM4RU 21EM4RU...
  • Page 4 14EM4RU 21EM4RU...
  • Page 5 14EM4RU 21EM4RU...
  • Page 6 14EM4RU 21EM4RU...
  • Page 7 14EM4RU 21EM4RU...
  • Page 8 14EM4RU 21EM4RU...
  • Page 9 14EM4RU 21EM4RU...
  • Page 10 14EM4RU 21EM4RU...

  • Page 11: Memory Map

    14EM4RU 21EM4RU...
  • Page 12 14EM4RU 21EM4RU...
  • Page 13 14EM4RU 21EM4RU...
  • Page 14 14EM4RU 21EM4RU...

  • Page 15: Ga1 Hotel Mode Application

    14EM4RU 21EM4RU...
  • Page 16 14EM4RU 21EM4RU...
  • Page 17 14EM4RU 21EM4RU...

  • Page 18: Waveforms

    14EM4RU 21EM4RU WAVEFORMS(14EM4RU) 5) 70.0 Vp-p (H) 1) 1.0 Vp-p 2) 3.00 Vp-p (H) 3) 3.10 Vp-p (H) 4) 3.10 Vp-p (H) 7) 79.2 Vp-p (H) 8) 3.2 Vp-p (H) 9) 2.32 Vp-p (H) 10) 122 Vp-p (H) 6) 78.4 Vp-p (H) 11) 8.8 Vp-p (H)
  • Page 19 14EM4RU 21EM4RU WAVEFORMS(21EM4RU) 1) 1.04 Vp-p 2) 3.32 Vp-p 3) 3.40 Vp-p 4) 3.12 Vp-p 5) 84.8 Vp-p 6) 90.4 Vp-p 7) 88.6 Vp-p 8) 3.16 Vp-p 9) 2.44 Vp-p 10) 122 Vp-p 11) 8.72 Vp-p 12) 47.2 Vp-p 13) 140 Vp-p...

  • Page 20: Solid State Device Base Diagram

    14EM4RU 21EM4RU SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR :BR: BASE EMITTER BASE EMITTER CAT24W04 B709A D601A IX3368CE SIDE VIEW BASE COLLECTOR BASE EMITTER COLLECTOR EMITTER TX0110BM DX0111PE TX0124BM 2SC3207 2SC3198 CATHODE ANODE (RED) 1 2 3 AN7523...

  • Page 21: Chassis Layout

    14EM4RU 21EM4RU MODEL 14EM4RU CHASSIS LAYOUT...
  • Page 22 14EM4RU 21EM4RU MODEL 21EM4RU CHASSIS LAYOUT...

  • Page 23: Block Diagram

    14EM4RU 21EM4RU BLOCK DIAGRAM CRT UNIT BLOCK DIAGRAM : 14EM4RU CRT UNIT BLOCK DIAGRAM : 21EM4RU...
  • Page 24 14EM4RU 21EM4RU BLOCK DIAGRAM MAIN UNIT (14EM4RU)
  • Page 25 14EM4RU 21EM4RU...
  • Page 26 14EM4RU 21EM4RU BLOCK DIAGRAM MAIN UNIT (21EM4RU)
  • Page 27 14EM4RU 21EM4RU...
  • Page 28 14EM4RU 21EM4RU BLOCK DIAGRAM HEADPHONE UNIT BLOCK DIAGRAM...

  • Page 29: Description Of Schematic Diagram

    14EM4RU 21EM4RU DESCRIPTION OF SCHEMATIC DIAGRAM SAFETY NOTES: NOTES: 1. DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE 1. The unit of resistance “ohm” is omitted. REPLACING PARTS. (K = 1000 ohms, M = Meg ohm). 2. SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS 2.

  • Page 30: Schematic Diagram

    14EM4RU 21EM4RU SCHEMATIC DIAGRAM MAIN UNIT : 14EM4RU...
  • Page 31 14EM4RU 21EM4RU...
  • Page 32 14EM4RU 21EM4RU MAIN UNIT : 21EM4RU...
  • Page 33 14EM4RU 21EM4RU...

  • Page 34: Ë Crt Unit

    14EM4RU 21EM4RU CRT UNIT : 14EM4RU CRT UNIT : 21EM4RU...

  • Page 35: Ë Head Phone Unit

    14EM4RU 21EM4RU HEADPHONE UNIT...

  • Page 36: Printed Wiring Board Assemblies

    14EM4RU 21EM4RU PRINTED WIRING BOARD ASSEMBLIES PWB-A: MAIN UNIT (Component Side)
  • Page 37 14EM4RU 21EM4RU...
  • Page 38 14EM4RU 21EM4RU PWB-A: MAIN UNIT (Chip Parts Side)
  • Page 39 14EM4RU 21EM4RU...
  • Page 40 14EM4RU 21EM4RU (Chip Parts Side) (Wiring Side) PWB-B: CRT UNIT (Component Side) (Chip Side) PWB-C: HEADPHONE UNIT...

  • Page 41: Replacement Parts List

    R 2PB709AR å V801 VB51LMV10X/ R Picture Tube (21EM4RU) ∗ ∗ Q804 VS2PD601AR/-1 R 2PD601AR å V801 VB34JXV70X/ R Picture Tube (14EM4RU) ∗ Q1010 VS2PD601AR/-1 R 2PD601AR å L703 RCiLG0001KJZZ R Degaussing Coil (14EM4RU) DIODES AND LED’S å L703 RCiLG0003KJZZ R Degaussing Coil ∗...
  • Page 42 14EM4RU 21EM4RU Ref. No. Part No. Description Code Ref. No. Part No. Description Code D1001 RH-PX0013PEZZ R PhotoDiode C501 VCKYPA1HB102K+ R 1000p 50V Ceramic ∗ ∗ D1003 VHD1SS119//-1 R 1SS119 C504 VCKYCY1HB103K R 0.01 50V Ceramic ∗ D1004 VHD1SS119//-1 R 1SS119...
  • Page 43 14EM4RU 21EM4RU Ref. No. Part No. Description Code Ref. No. Part No. Description Code ∗ R301 VRS-CY1JF101J R 100 1/16W Metal Oxide C1002 VCEA0A0JW107M+ R 100 6.3V Electrolytic ∗ R302 VRS-CY1JF101J R 100 1/16W Metal Oxide C1003 VCEA0A1CW106M+ R 10 16V Electrolytic ∗...
  • Page 44 R Jack, AUDIO IN (21EM4RU) J409 QJAKH0044AJZZ R Jack, AV1-IN ∗ R756 VRD-RM2HD270J R 27 1/2W Carbon P301 QPLGN0241CEZZ R Plug,2pin(S) (14EM4RU) (14EM4RU) P302 QPLGN0241CEZZ R Plug (21EM4RU) ∗ R757 VRS-CY1JF331J R 330 1/16W Metal Oxide P303 QPLGN0461CEZZ R Plug, 4pin(HP)

  • Page 45: Crt Unit

    R 470 1/16W Metal Oxide (14EM4RU) ∗ R899 VRS-CY1JF471J R 470 1/16W Metal Oxide MISCELLANEOUS PARTS å SC881 QSOCV0017PEZZ R Socket, 9pin (14EM4RU) å SC883 QSOCV0931CEZZ R Socket, 11pin (21EM4RU) AK P882 LHLDW1105PEZZ R Plug, 5pin(K) P884 LHLDW1104PEZZ R Plug, 4pin(H)

  • Page 46: Ë Miscellaneous Parts

    (14EM4RU) QCNW-A292WJZZ R Connecting Cord (14EM4RU) QCNW-A500WJZZ R Connecting Cord (21EM4RU) SUPPLIED ACCESSORIES ACCESSORIES QANTR0018PEZZ R Rod Antenna (14EM4RU) AQ RRMCG1342PESA R Infrared R/C Unit TiNS-A626WJZZ R Opearation Manual QPLGJ0113CEZZ R AC Plug Adaptor TGAN-A101WJZZ R Guarantee Card 14DEM4RU PACKING PARTS...

  • Page 47: Packing Of The Set

    14EM4RU 21EM4RU Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING OF THE SET (14EM4RU) Polystyrene Bag Operation Manual Buffer Material Infrared Remote Control Unit Batteries Wrapping Paper Buffer Material Packing Case Serial Number Card Fix the packing...
  • Page 48 14EM4RU 21EM4RU (21EM4RU) Polystyrene Bag Buffer Material Operation Manual Batteries Wrapping Paper Infrared Remote Control Unit Buffer Material Packing Case Fix the packing case with 22 staples Mark : Not Replacement Item...
  • Page 49 14EM4RU 21EM4RU...
  • Page 50 14EM4RU 21EM4RU 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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