Sharp CD-MPX870W, Service Manual

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CD-MPX870W
CD-MPX870W
SERVICE MANUAL
In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
No. S6622CDMP870W
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.
CHAPTER 1. GENERAL DESCRIPTION
[1] Precaution for using lead-free solder............ 1-1
[2] Safety precaution for service manual ........... 1-2
[3] Voltage selection............................................1-2
[4] AC power supply cord AC plug adaptor.........1-2
[5] Specifications.................................................1-3
[6] Names of parts...............................................1-4
CHAPTER 2. ADJUSTMENTS
[1] Mechanism section ....................................... 2-1
[2] Test mode ..................................................... 2-2
[3] CD section ..................................................... 2-4
[4] CD Changer mechanism section ................... 2-5
CHAPTER 3. MECHANISM BLOCKS
[1] Caution on disassembly................................. 3-1
[2] Removing and reinstalling the main parts ...... 3-4
CHAPTER 4. DIAGRAMS
[1] CD Block diagrams ....................................... 4-1
[2] Main Block diagrams .................................... 4-2
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] Wiring side of PWB ......................................6-10
CHAPTER 7. FLOWCHART
[1] Troubleshooting............................................ 7-1
CHAPTER 8. OTHERS
[1] Function table of IC ...................................... 8-1
[2] FL Display .................................................... 8-8
Parts Guide
MINI COMPONENT SYSTEM
MODEL
CD-MPX870W Mini Component System consisting of
CD-MPX870W (main unit) and CP-MPX870 (speaker
system).
CONTENTS