LC-20B8U-S
LC-20B9U-S
LC-20B9U-SM
SERVICE MANUAL
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.
MODELS
LC-20B8U-S
LC-20B9U-S
LC-20B9U-SM
SHARP CORPORATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LCD COLOR TELEVISION
CONTENTS
»
IMPORTANT SERVICE SAFETY PRECAUTION ......................................................................................... 2
»
SPECIFICATIONS ........................................................................................................................................5
»
OPERATION MANUAL .................................................................................................................................6
»
DIMENSIONS ...............................................................................................................................................8
»
REMOVING OF MAJOR PARTS .................................................................................................................. 9
»
ADJUSTING PROCEDURE OF EACH SECTION ..................................................................................... 13
»
PUBLIC MODE SETTING PROCEDURE ..................................................................................................23
»
TROUBLE SHOOTING TABLE .................................................................................................................. 29
»
MAJOR IC INFORMATION ......................................................................................................................... 34
»
BLOCK DIAGRAM ...................................................................................................................................... 42
»
OVERALL WIRING DIAGRAM ................................................................................................................... 44
»
DESCRIPTION OF SCHEMATIC DIAGRAM ............................................................................................. 46
»
SCHEMATIC DIAGRAM
Ë
R/C, LED Unit .......................................................................................................................................... 47
Ë
MAIN Unit ................................................................................................................................................. 48
Ë
SUB Unit .................................................................................................................................................. 72
Ë
POWER Unit ............................................................................................................................................ 76
Ë
INVERTER Unit .......................................................................................................................................86
»
PRINTED WIRING BOARD ASSEMBLIES ................................................................................................88
»
REPLACEMENT PARTS LIST .................................................................................................................. 109
»
PACKING OF THE SET ............................................................................................................................127
Page
S45H7LC20B9US
Summary of Contents for LC-20B8US
Page 45: ...45 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 49: ...49 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 51: ...51 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 53: ...53 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 55: ...55 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 57: ...57 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 59: ...59 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 61: ...61 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 63: ...63 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 65: ...65 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 67: ...67 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 68: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 68 LC 20B8U S LC 20B9U S LC 20B9U SM ËMAIN Unit 6 7 ...
Page 69: ...69 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 70: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 70 LC 20B8U S LC 20B9U S LC 20B9U SM ËMAIN Unit 7 7 ...
Page 71: ...71 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 72: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 72 LC 20B8U S LC 20B9U S LC 20B9U SM ËSUB Unit 1 2 ...
Page 73: ...73 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 74: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 74 LC 20B8U S LC 20B9U S LC 20B9U SM ËSUB Unit 2 2 ...
Page 75: ...75 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 77: ...77 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 79: ...79 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 81: ...81 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 83: ...83 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 84: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 84 LC 20B8U S LC 20B9U S LC 20B9U SM ËPOWER Unit 3 3 ...
Page 85: ...85 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 86: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 86 LC 20B8U S LC 20B9U S LC 20B9U SM ËINVERTER Unit ...
Page 87: ...87 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 89: ...89 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 92: ...8 7 10 9 6 5 4 3 2 1 A B C D E F G H 92 LC 20B8U S LC 20B9U S LC 20B9U SM MAIN Unit Side B ...
Page 93: ...93 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 97: ...97 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 101: ...101 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 103: ...103 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 107: ...107 17 16 19 18 15 14 13 12 11 10 LC 20B8U S LC 20B9U S LC 20B9U SM ...
Page 108: ...108 6 5 4 3 2 1 A B C D E F G H LC 20B8U S LC 20B9U S LC 20B9U SM ...