Sharp cd mpx 860 h service manual

Page 1

CD-MPX860H

SHARP SERVICE MANUAL

N0. S1701CDMP860H

MINI COMPONENT SYSTEM

MODEL CD-MPX860H

CD-MPX860H Mini Component System consisting
of CD-MPX860H (main unit) and CP-MPX860H
(speaker system).

- In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.

dlCDMPACT .. Plays
W' (1
nimggufi @Rlpls . Note for users in U.K.

Recording and playback of any material may require consent
Y \/ m which SHARP is unable to give. Please refer particularly to the
with provisions of Copyright Act 1956, the Performers Protection Acts

"ammo"

1963 and 1972 and subsequent statutory enactments and

orders.
. - D I S C
Gamer-33% 5 W.
/ CONTENTS \
PRECAUTIONS FOR USING LEAD FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION CHAPTER 5. CIRCUIT DESCRIPTION

[1] Safety Precaution For Service Manual ......... 1-1 [1] Waveforms Of CD Circuit

[2] Important Service Notes (for U.K. only). . -2 [2] Voltage ...............................
[3] Specifications ..... -2
[4] Names Of Parts .

....5-1
....5-2

-4 CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS

LAYOUT
CHAPTER 2. ADJUSTMENTS [1] Notes On Schematic Diagram... ....6-1
[1] Mechanism Section ..... [2] Types Of Transistor And LED. .6-1
[2] Test Mode [3] Schematic Diagram ...... .6-2

[3] CD Section
[4] CD Changer Mechanism Section.

[4] Wiring Side or PWB..

CHAPTER 7. FLOWCHART
CHAPTER 3. MECHANISM BLOCKS [1] Troubleshooting.
[1] Caution On Disassembly .............................. 3-1
[2] Removing And Reinstalling The Main Parts . 3-4 CHAPTER 8. OTHERS

[1] Function Table Of IC .....
CHAPTER 4. DIAGRAMS [2] FL Display ....................
[1] CD Block Diagrams ..... [3] Wiring Of Primary Supply Leads
[2] Main Block Diagrams (for U.K. only) .....

Parts Guide

K /

Parts marked with "A" 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

SHARP CORPORATION for after sales service only.

The contents are subject to change without notice.

Page 2

CD-MPX860H
PRECAUTIONS FOR USING LEAD-FREE SOLDER

1. Employing lead-free solder
"MAIN, POWER, DISPLAY, JACK, CD SERVO, CD MOTOR (PWB ONLY), CD CHANGER MOTOR (PWB ONLY) "
of this model employs lead-free solder.
The LF symbol indicates lead-free solder, and is attached on the PWB and service manuals, The alphabetical character
following LF shows the type of lead-free solder.

Example: E a

S n-Ag-CU Indicates lead-free solder of tin, silver and copper.

2. Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire
solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to
use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our
service station or service branch in your area.

3. Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder
by 40 °C,and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for
extended period of time. However. since the land may be peeled off or the maximum heat-resistance temperature
of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn on
and off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after
every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

Ref No. Parts No. Description
PWB-A 92LPWBG706MANS MAIN (A1), POWER (A2)
PWB-B 92LPWBG706DFLS DISPLAY (Bl), JACK (BZ)
PWB-C 92LPW86514CDUS CD SERVO
PWB-D QPWBF0027AWZZ CD MOTOR (PWB ONLY)
PWB-E QPWBF1055AWZZ CD CHANGER MOTOR (PWB ONLY)