Service manual

CD-DH790N
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SERVICE MANUAL
No. S8938CDDH790N
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] Important Service Safety Precaution.............. 1-1
[2] Important Service Notes (for U.S.A only)....... 1-1
[3] Specifications ................................................. 1-2
[4] Name Of Parts ............................................... 1-3
CHAPTER 2. ADJUSTMENTS
[1] Mechanism Section........................................ 2-1
CHAPTER 3. MECHANISM BLOCKS
[1] Caution On Disassembly................................ 3-1
CHAPTER 4. DIAGRAMS
[1] Main Block Diagram....................................... 4-1
[2] Servo Block Diagram .................................... 4-3
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Waveforms Of 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] Charts Of Connecting Wires .......................6-22
[5] Wiring Side Of PWB ....................................6-24
CHAPTER 7. FLOWCHART
[1] Troubleshooting.............................................7-1
CHAPTER 8. OTHERS
[1] Function Table Of IC......................................8-1
[2] FL Display......................................................8-9
PARTS GUIDE
MINI COMPONENT SYSTEM
CD-DH790N
MODEL
CD-DH790N Mini Component System consisting of
CD-DH790N (main unit) and CP-DH790N (speaker system).
CONTENTS
SHARP CORPORATION
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.
!
• In the interests of user-safety the set should be restored
to its original condition and only parts identical to those
specified be used.
iPod is a trademark of Apple Inc.,
registered in the U.S. and other countries.
“Made for iPod” means that an electronic accessory has
been designed to connect specifically to iPod and has been
certified by the developer to meet Apple performance
standards.
Apple is not responsible for the operation of thi
s device or its
compliance with safety and regulatory standards.