Sharp LC-90LE740X Aquos, Service Manual

Page: 1 / 74

SERVICE MANUAL
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 ............................................................i
PRECAUTIONS FOR USING LEAD-FREE
SOLDER ............................................................ii
OUTLINE
MAJOR SERVICE PARTS ................................ iii
CHAPTER 1. SPECIFICATIONS
[1] SPECIFICATIONS ......................................... 1-1
CHAPTER 2. OPERATION MANUAL
[1] OPERATION MANUAL .................................. 2-1
CHAPTER 3. DIMENSIONS
[1] DIMENSIONS ................................................ 3-1
CHAPTER 4. REMOVING OF MAJOR PARTS
[1] REMOVING OF MAJOR PARTS ................... 4-1
[2] The location putting on the heat measure
sheet .............................................................. 4-6
[3] Precautions for assembly............................... 4-7
CHAPTER 5. ADJUSTMENT
[1] ADJUSTMENT PROCEDURE ......................5-1
[2] PUBLIC MODE SETTING PROCEDURE ......5-14
[3] USB Clone Specifications............................5-21
CHAPTER 6. TROUBLESHOOTING TABLE
[1] Failure diagnosis by LED in front of cabinet ........6-1
[2] LED flashing specification at the time of an
error (Center icon LED used) ........................6-1
[3] TROUBLESHOOTING TABLE ......................6-5
CHAPTER 7. MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS .........................7-1
CHAPTER 8. OVERALL WIRING/SYSTEM BLOCK
DIAGRAM
[1] OVERALL WIRING DIAGRAM......................8-1
[2] SYSTEM BLOCK DIAGRAM.........................8-2
Parts Guide
TopPage
LC-90LE740X
CONTENTS
LCD COLOR TELEVISION
LC-90LE740X
MODEL
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.
No. SY2A4LC90LE74