Sharp LC-32A28L, Service Manual

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LC-32A28L, LC-42A48L
1
SERVICE MANUAL
No.
LCD COLOUR TELEVISION
LC-32A28L
MODELS
LC-42A48L
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
inal condition and only parts identical to those specified should be used.
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRE-
CAUTION ....................................................................2
Precautions for using lead-free solder ......………........3
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ..................................................4
[2] OPERATION MANUAL ...........................................5
[3] DIMENSIONS .......................................................12
CHAPTER 2. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ..........................14
CHAPTER 3. ADJUSTMENT PROCEDURE
[1] ADJUSTMENT PROCEDURE .............................22
[2] SERVICE MODE ..................................................27
[3]
SOFTWARE UPGRADE PROCEDURE.............
..
28
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE..............................29
CHAPTER 5. MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS.................................42
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM
[1] BLOCK DIAGRAM ................................................57
CONTENTS
[2] POWER MANAGEMENT BLOCK DIAGRAM ........58
[3] WIRING DIAGRAM ..................................................59
CHAPTER 7. PRINTED WIRING BOARD
[1] MAIN UNIT PRINTED WIRING BOARD .................61
[2] POWER UNIT PRINTED WIRING BOARD............. 63
[3] KEY UNIT PRINTED WIRING BOARD ...................67
[4] IR UNIT PRINTED WIRING BOARD .......................68
CHAPTER 8. SCHEMATIC DIAGRAM
[1] MAIN SCHEMATIC DIAGRAM ...............................69
[2] POWER SCHEMATIC DIAGRAM............................83
[3] KEY SCHEMATIC DIAGRAM................................ ..85
[4] IR SCHEMATIC DIAGRAM......................................86
CHAPTER 9. Parts Guide
[1] SPARE PARTS LIST................................................87
[2] CABINET PARTS ..................................................109
[3] SUPPLIED ACCESSOORIES................................113
[4] PACKING PARTS..................................................114
SHARP CORPORATION