Sharp XL-DH20NH Service Manual

PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety Precaution For Service Manual ........1-1
[2] Specifications...............................................1-1
[3] Names Of Parts ...........................................1-2
CHAPTER 2. MECHANISM BLOCKS
[1] Caution On Disassembly .............................2-1
CHAPTER 3. DIAGRAMS
[1] Block Diagram .............................................3-1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Waveforms Of Servo Circuit ........................4-1
[2] Voltage.........................................................4-2
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.
SHARP CORPORATION
SERVICE MANUAL
MICRO COMPONENT SYSTEM
MODEL
XL-DH20NH Micro Component System consisting of
XL-DH20NH (main unit) and CP-DH20NH (speaker system).
• In the interests of user-safety (Required by safety regula-
tions in some countries) 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.
CONTENTS
CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Notes On Schematic Diagram ......................5-1
[2] Types Of Transistor And LED .......................5-1
[3] Schematic Diagram ......................................5-2
[4] Charts Of Connecting Wires .......................5-22
[5] Wiring Side Of PWB ...................................5-24
CHAPTER 6. FLOWCHART
[1] Troubleshooting ............................................6-1
CHAPTER 7. OTHERS
[1] Function Table Of IC .....................................7-1
[2] VFD Display..................................................7-2
PARTS GUIDE
No. S7929XLH20NHH
XL-DH20NH
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
XL-DH20NH