Sharp 20U200 Service Manual
  1. Manuals
  2. Brands
  3. Sharp Manuals
  4. TV
  5. 20U200
  6. Service manual

Sharp 20U200 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

20U200
20U250
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 Favorite Channel
Ë Full Auto Search System
Ë 100 CH Program Memory
Ë CATV (Hyper Band) Ready
Ë AVL (Sound Keeper) Function
Ë High Contrast Picture (Black Stretch Circuit)
Ë ON Timer/Sleep Timer/Reminder Timer
Ë Blue Back Noise Mute
Ë Front AV In and Rear AV In/Out Terminals
» SPECIFICATIONS ................................................. 2
» IMPORTANT SERVICE NOTES ........................... 2
» ADJUSTMENT PRECAUTIONS ........................... 3
» UA1 HOTEL MODE APPLICATION .................... 18
» TROUBLE SHOOTING TABLE ........................... 19
» CHASSIS LAYOUT .............................................. 22
» BLOCK DIAGRAM............................................... 24
» WAVEFORMS ..................................................... 30
Ë MAIN UNIT (20U200/250) ............................... 32
Ë MAIN UNIT (51U200/250) ............................... 34
Ë MAIN UNIT (51U500/550) ............................... 36
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

51U200/500
51U250/550
MODELS
FEATURE
CONTENTS
Page
WARNING

SHARP CORPORATION

COLOUR TELEVISION

Chassis No. UA-1
20U200, 20U250
51U200, 51U250
51U500, 51U550
Ë Rear Sub-Woofer Terminal
Ë Front Headphone Jack
Ë Colour-Comb Filter (NTSC AV In)
Ë Hotel Mode
Ë English Language OSD
Ë Low Power Consumption
Ë AV Stereo (20U200/250, 51U200/250)
Ë NICAM/IGR Stereo Sound Output (51U500/550)
Ë CRT UNIT ........................................................ 38
Ë HEADPHONE UNIT ......................................... 39
Ë NICAM UNIT .................................................... 40
» REPLACEMENT PARTS LIST
Ë ELECTRICAL PARTS
MAIN UNIT ...................................................... 46
CRT UNIT ........................................................ 51
HEADPHONE UNIT ......................................... 51
NICAM/IGR UNIT ............................................ 51
Ë SUPPLIED ACCESSORIES ............................ 53
Ë PACKING PARTS ............................................ 53
Ë CABINET PARTS ............................................. 53
1
20U200, 20U250
51U200, 51U250
51U500, 51U550
S90i420U200//
Page

Advertisement

Table of Contents
loading

Related Manuals for Sharp 20U200

Summary of Contents for Sharp 20U200

  • Page 1: Table Of Contents

    » DESCRIPTION OF SCHEMATIC DIAGRAM ..31 NICAM/IGR UNIT ..........51 Ë SUPPLIED ACCESSORIES ......53 » SCHEMATIC DIAGRAM Ë MAIN UNIT (20U200/250) ....... 32 Ë PACKING PARTS ..........53 Ë MAIN UNIT (51U200/250) ....... 34 Ë CABINET PARTS ..........53 Ë...

  • Page 2: Specifications

    Power Input ................... 110 - 240V AC 50/60 Hz should be disconnected from AC outlet.) Power Consumption 20U200/250 ......................94W 1. Picture tube in this receiver employs integral implosion protection. 2. Replace with tube of the same type number for continued safety.

  • Page 3: Adjustment Precautions

    Ë SERVICE MODE ADJUSTMENT PRECAUTIONS (1) In the Service Mode, Key is used to select the mode in the following order. This model’s setting are adjusted in two different ways: though the I C bus control and in the conventional analog manner. The adjustments via the I C bus control include preset-only items and variable data.
  • Page 4 Y-DELAY OFFSET MISC. ADJ. ADJ. OPTION MODE MODE MODE ↓ ↓ ↓ ↓ Y-D TIME FOR PAL (TV) (DL-PT) COLOUR OFFSET (PAL) (COL-OP) SOUND SYSTEM M (S-M) FRENCH LANGUAGE (FRE) ↓ ↓ ↓ ↓ SOUND SYSTEM DK (S-DK) Y-D TIME FOR SECAM (TV) (DL-ST) COLOUR OFFSET (SECAM) (COL-OS) RUSSIAN LANGUAGE (RUS) ↓...
  • Page 5 After short JA122 & JA124, and turn on the main power switch, read data from EEPROM USER DATA IN SERVICE MODE address 00H ~ 03H, and compare to the list below, if different, initialize the EEPROM. Address : Data Address : Data * While SERVICE mode ON, EEPROM DATA will switch to the service data.
  • Page 6 EEPROM ITEMS DATA LENGTH INITIAL DATA FIX/ADJ REMARK EEPROM ITEMS DATA LENGTH INITIAL DATA FIX/ADJ REMARK SHARPNESS OFFSET (PAL) SHP-OP 0~15 THAI LANGUAGE 0(DISABLE)/1(ENABLE) SHARPNESS OFFSET (SECAM) SHP-OS 0~15 ARABIC LANGUAGE 0(DISABLE)/1(ENABLE) SHARPNESS OFFSET (NTSC358) SHP-O3 0~15 MALAY LANGUAGE 0(DISABLE)/1(ENABLE) SHARPNESS OFFSET (NTSC443) SHP-O4 0~15...
  • Page 7 SHIPPING SETTING & CHECKING PIF ADJUSTMENT NO. Adjustment part Adjusting procedure and conditions Waveform and others (1) The following default data has been factory-set for the E PROM. Tuner IFT 1. Get the tuner ready to receive the E-9 CH (By press factory setting 3 key) (PRESET) signal, but with no signal input.

  • Page 8: Purity Adjustment

    PURITY ADJUSTMENT CONVERGENCE ADJUSTMENT NO. Adjustment part Adjusting procedure and conditions Waveform and others NO. Adjustment part Adjusting procedure and conditions Waveform and others PURITY ADJ. 1. Receive the GREEN-ONLY signal. Adjust the CONVERGENC 1. Receive the "Crosshatch Pattern" signal. beam current to about 700 mA.
  • Page 9 CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT HORIZONTAL, VERTICAL, DEFLECTION LOOP AND FOCUS ADJUSTMENT NO. Adjustment part Adjusting procedure and conditions Waveform and others NO. Adjustment part Adjusting procedure and conditions Waveform and others CRT CUTOFF 1. Switch TV to VIDEO mode, BLUE BACK OFF V-SLOPE 1.
  • Page 10 NTSC CHROMA ADJUSTMENT PROTECTOR OPERATION CHECKING NO. Adjustment part Adjusting procedure and conditions Waveform and others NO. Adjustment part Adjusting procedure and conditions Waveform and others SUB-TINT (I 1. Receive the "NTSC3.58 Colour Bar" signal BEAM 1. Receive "Monoscope Pattern" signal. * Select one of Q883/5/7 to do each through AV in.
  • Page 11 FUNCTION OPERATION CHECKING (VIDEO AND AUDIO) FUNCTION OPERATION CHECKING (VIDEO AND AUDIO) (Continued) NO. Adjustment part Adjusting procedure and conditions Waveform and others CONTRAST 1. Receive "Monoscope Pattern" signal. NO. Adjustment part Adjusting procedure and conditions Waveform and others 2. Set PICTURE MENU to select CONTRAST. COLOUR 1.
  • Page 12 1. Check Normal operation of each model of PASS WORD 00-FF (NICAM/IGR/ different features. PASS WORD 00-FF TEXT) PASS WORD 00-FF PASS WORD 00-FF Model NICAM IGR TEXT 20U200/250, 51U200/250 AGC TAKE-OVER 00-3F 51U500/550 V-SLOPE 00-3F V-AMPLITUDE 00-3F V-CENTER 00-3F H-CENTER 00-3F H-SIZE 00-3F...
  • Page 13 ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL REMARK REMARK (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA SHARPNESS-OFFSET (SECAM) 00-0F FAVOURITE PROGRAM RED...
  • Page 14 ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL REMARK REMARK (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA IGR_ST 0 IGR_ST 1 IGR_ST 2 IGR_ST 3...
  • Page 15 ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL REMARK REMARK (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA S-SYS (auto) C-SYS...
  • Page 16 ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL REMARK REMARK (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA TUNING FREQUANCY (LOWER PART) POS 55 S-SYS...
  • Page 17 ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL REMARK REMARK (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA TUNING FREQUANCY (HIGHER PART) POS 98 TUNING FREQUANCY (LOWER PART)

  • Page 18: Feature

    HOTEL MODE APPLICATION NOTE ADDRESS DATA MICON EEPROM EEPROM CHASSIS CTV FINAL LAST INTIAL REMARK (HEX) DEFAULT RANGE WRITE (CPU) CHECK DATA CHECK TYPE CHECK DATA CHECK TYPE SETTING DATA The purpose of this HOTEL MODE is enable hotel authorized person to store the tuned programs as hotel channels, current volume as maximum hotel volume, picture and sound setting.

  • Page 19: Trouble Shooting Table

    TROUBLE SHOOTING TABLE TROUBLE SHOOTING TABLE (Continued) CIRCUITS TO BE CHECKED: NO RASTER NO PICTURE, NO SOUND » Tuner. » PIF. » Automatic Gain Control. » (5V), (32V) Power Source. Check F701. Blown out. Does the noise level increase at max. Contrast, Brightness and Sound controls ? Normal Replace the fuse.
  • Page 20 TROUBLE SHOOTING TABLE TROUBLE SHOOTING TABLE (Continued) (Continued) NO SPECIFIC COLOUR Is some colour produced in B/W broadcast reception ? Check IC801, R801, R802, Is the white balance properly R803, D804, D805, D806 adjusted ? and Q801. Readjust the white balance. The picture colour is cyan.

  • Page 21: Solid State Device Base Diagram

    20U200, 20U250 51U200, 51U250 51U500, 51U550 SOLID STATE DEVICE BASE DIAGRAM TOP VIEW COLLECTOR COLLECTOR COLLECTOR :BG: BASE EMITTER BASE EMITTER BASE EMITTER M24C08W B709A 2SC2735 FX0008GE D601A TDA9874A iX3410CE AN5891K TDA9808T M52797SP SIDE VIEW BASE 1 2 3 COLLECTOR...

  • Page 22: Chassis Layout

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 20U200/250, 51U200/250 CHASSIS LAYOUT...

  • Page 23: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 51U500/550 CHASSIS LAYOUT...
  • Page 24 20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 20U200/250, 51U200/250 BLOCK DIAGRAM-1...

  • Page 25: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 51U500/550 BLOCK DIAGRAM...

  • Page 26: Block Diagram

    20U200, 20U250 51U200, 51U250 51U500, 51U550 BLOCK DIAGRAM-2...

  • Page 27: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 BLOCK DIAGRAM-3...

  • Page 28: Waveforms

    20U200, 20U250 51U200, 51U250 51U500, 51U550 WAVEFORMS 0.98 Vp-p 20" 3.15 Vp-p (H) 20" 3.02 Vp-p (H) 20" 3.28 Vp-p (H) 20" 81.8 Vp-p (H) 20" 1.12 Vp-p 21" 3.17 Vp-p (H) 21" 3.11 Vp-p (H) 21" 3.11 Vp-p (H) 21"...

  • Page 29: Description Of Schematic Diagram

    20U200, 20U250 51U200, 51U250 51U500, 51U550 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).

  • Page 30: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 20U200/250 SCHEMATIC DIAGRAM: MAIN Unit...

  • Page 31: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 51U200/250 SCHEMATIC DIAGRAM: MAIN Unit...

  • Page 32: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 51U500/550 SCHEMATIC DIAGRAM: MAIN Unit...

  • Page 33: Schematic Diagram

    20U200, 20U250 51U200, 51U250 51U500, 51U550 SCHEMATIC DIAGRAM: CRT Unit Ë 20U200/250 Ë 51U200/250/500/550...

  • Page 34: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 SCHEMATIC DIAGRAM: HEADPHONE Unit...

  • Page 35: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 MODELS 51U500/550 SCHEMATIC DIAGRAM: NICAM Unit...

  • Page 36: Printed Wiring Board Assemblies

    20U200, 20U250 51U200, 51U250 51U500, 51U550 PRINTED WIRING BOARD ASSEMBLIES PWB-B: CRT Unit (Wiring Side) (Chip Parts Side) (Component Side) PWB-C: HEADPHONE Unit PWB-E: NICAM Unit (Wiring Side)

  • Page 37: 20U200, 20U250 51U200, 51U250

    20U200, 20U250 51U200, 51U250 51U500, 51U550 PWB-A: MAIN Unit (Component Side)
  • Page 38 20U200, 20U250 51U200, 51U250 51U500, 51U550 PWB-A: MAIN Unit (Chip Parts Side)

  • Page 39: Main Unit

    D401 RH-EX0631GEZZ R Zener Diode PWB-A DUNTK9988WEZ8 – MAIN Unit (51U200/250) — D402 RH-EX0631GEZZ R Zener Diode PWB-A DUNTK9988WEZ9 – MAIN Unit (20U200/250) — D501 RH-EX0640GEZZ R Zener Diode PWB-B DUNTK9990WEX8 – CRT Unit (20U200/250) — D502 VHD1SS119//-1 R Diode PWB-B DUNTK9990WEZ5 –...
  • Page 40 20U200, 20U250 51U200, 51U250 51U500, 51U550 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A DUNTK9988WE A2/Z8/Z9 L601 VP-CF1R0M0000 R Peaking 1µH L603 RCiLP0225CEZZ R Coil MAIN UNIT (Continued) å L702 RCiLF0019PEZZ J Coil L802 VP-DF100K0000 R Peaking 10µH...
  • Page 41 20U200, 20U250 51U200, 51U250 51U500, 51U550 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A DUNTK9988WE A2/Z8/Z9 C700 VCQYTA2AA103K R 0.01 100V Mylar å C701 RC-FZ031SCEZZ R 0.1 AC250V Film MAIN UNIT (Continued) C702 RC-KZ0160GEZZ R 0.01...
  • Page 42 20U200, 20U250 51U200, 51U250 51U500, 51U550 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A DUNTK9988WE A2/Z8/Z9 R239 VRS-CY1JF221J R 220 1/16W Metal Oxide R300 VRS-CY1JF680J R 68 1/16W Metal Oxide MAIN UNIT (Continued) R306 VRS-CY1JF123J...
  • Page 43 20U200, 20U250 51U200, 51U250 51U500, 51U550 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A DUNTK9988WE A2/Z8/Z9 R809 VRD-RA2BE224J R 220k 1/8W Carbon R811 VRS-CY1JF563J R 56k 1/16W Metal Oxide MAIN UNIT (Continued) R812 VRS-CY1JF101J R 100 1/16W Metal Oxide...
  • Page 44 20U200, 20U250 51U200, 51U250 51U500, 51U550 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-A DUNTK9988WE A2/Z8/Z9 R885 VRD-RM2HD272J R 2.7k 1/2W Carbon R886 VRS-VV3DB153J R 15k 2W Metal Oxide MAIN UNIT (Continued) R887 VRD-RM2HD272J R 2.7k 1/2W...
  • Page 45 20U200, 20U250 51U200, 51U250 51U500, 51U550 Ref. No. Part No. Description Code Ref. No. Part No. Description Code PWB-D DUNTKA149WEV4 P2301 QPLGZ0810CEZZ R Plug, 5-pin (BC) P2303 QPLGN0542CEZZ R Plug, 8-pin (M) NICAM UNIT (51U500/550) (Continued) SLD2301 PSLDM0310PEFW J Shield...

  • Page 46: Miscellaneous Parts

    TiNS-0046KMZZ Operation Manual (51U200/250) TiNS-0047KMZZ Operation Manual (20U200/250) PACKING PARTS 1-4 1-3 (NOT REPLACEMENT ITEM) 51U200/500 SPAKC0063KMZZ – Packing Case (20U200) — SPAKC0064KMZZ – Packing Case (20U250) — SPAKC0065KMZZ – Packing Case (51U200) — SPAKC0066KMZZ – Packing Case (51U250) —...
  • Page 47 Code Ref. No. Part No. Description Code COPYRIGHT © 2000 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.

This manual is also suitable for:

51u50051u55020u25051u20051u250

Table of Contents