HT-DV40H
SERVICE MANUAL
No. SY756HTDV40HW
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.
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety Precaution For Service Manual ......... 1-1
[2] AC Power Supply Cord.................................. 1-2
[3] Specifications................................................ 1-2
[4] Names Of Parts .................................................... 1-4
CHAPTER 2. ADJUSTMENTS
[1] Servo Section ............................................... 2-1
[2] Test Mode ..................................................... 2-2
[3] DVD Test Mode............................................. 2-3
[4] DVD Firmware Update Test Mode ................ 2-4
CHAPTER 3. MECHAN
ISM BLOCKS
[1] Caution On Disassembly ............................... 3-1
[2] Removing And Reinstalling The Main Parts . 3-4
CHAPTER 4. DIAGRAMS
[1] Main Block Diagrams..................................... 4-1
[2] DVD/CD Block Diagrams.............................. 4-3
[3] Power Block Diagrams .................................. 4-5
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Waveforms Of DVD/CD Circuit......................5-1
[2] Voltage ..........................................................5-2
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Notes On Schematic Diagram.......................6-1
[2] Types Of Transistor And LED........................6-1
[3] Schematic Diagram.......................................6-2
[4] Wiring Side Of PWB....................................6-12
CHAPTER 7. FLOWCHART
[1] Troubleshooting.............................................7-1
CHAPTER 8. OTHERS
[1] Function Table Of IC......................................8-1
[2] FL Display .....................................................8-8
PARTS GUIDE
DVD CINEMA
HT-DV40H
MODEL
HT-DV40H DVD Cinema consisting of HT-DV40H
(main unit), CP-DV40H (front speaker) and
CP-SW40H (subwoofer system).
CONTENTS
• 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 be used.
SHARP CORPORATION
[ Australia, Central & South America, Indonesia,
Singapore-Export/Vietnam, Middle East/Africa ]
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