Read Sharp CD-MPX880H Service Manual online
CD-MPX880H
SERVICE MANUAL
No. S4817CDM880HH
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety
CHAPTER 1. GENERAL DESCRIPTION
[1] Safety
Precaution
For Service Manual........... 1-1
[2] Important Service Notes (for U.K. only) ......... 1-2
[3] Specifications ................................................. 1-2
[4] Name
[3] Specifications ................................................. 1-2
[4] Name
Of
Parts ............................................... 1-3
CHAPTER 2. ADJUSTMENTS
[1] Mechanism
[1] Mechanism
Section........................................ 2-1
[2] Test
Mode....................................................... 2-2
[3] CD
Section ..................................................... 2-4
CHAPTER 3. MECHANISM BLOCKS
[1] Caution On Disassembly................................ 3-1
[2] Removing And Reinstalling The Main Parts ..... 3-4
[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] CD
[1] Main Block Diagrams ..................................... 4-1
[2] CD
Block
Diagrams....................................... 4-3
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Waveforms Of CD Circuit ..............................5-1
[2] Voltage...........................................................5-2
[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
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
[5] Wiring Side Of PWB ....................................6-24
CHAPTER 7. FLOWCHART
[1] Troubleshooting .............................................7-1
[1] Troubleshooting .............................................7-1
CHAPTER 8. OTHERS
[1] Function Table Of IC......................................8-1
[2] FL
[1] Function Table Of IC......................................8-1
[2] FL
Display......................................................8-8
[3] Wiring Of Primary Supply Leads
(for U.K. only) ................................................8-9
PARTS GUIDE
MINI COMPONENT SYSTEM
CD-MPX880H
MODEL
CD-MPX880H Mini Component System consisting of
CD-MPX880H (main unit) and CP-MPX880H (speaker
system).
CD-MPX880H (main unit) and CP-MPX880H (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.
specified ones for maintaining the safety and performance of the set.
[ For Europe, U.K., Australia and New Zealand ]
• In the interests of user-safety the set should be restored
to its original condition and only parts identical to those
specified be used.
l
Note for users in U.K.
Recording and playback of any material may require
consent which SHARP is unable to give. Please refer
particularly to the provisions of Copyright Act 1956, the
Performers Protection Acts 1963 and 1972 and
subsequent statutory enactments and orders.
consent which SHARP is unable to give. Please refer
particularly to the provisions of Copyright Act 1956, the
Performers Protection Acts 1963 and 1972 and
subsequent statutory enactments and orders.
CD-MPX880H
– i –
Audio
XL-MP150
Service Manual
XLMP150
Market
E
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
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.
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
extended period of time. However, since the land may be peeled of for 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.
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.
Description
Parts No.
PWB-A
92LPWB7269MANS
MAIN (A1), POWER (A2)
PWB-B
92LPWB7269DPLS
DISPLAY (B1), AUDIO IN (B2)
PWB-C 92LPWB6700CDUS CD
"MAIN, POWER, DISPLAY, AUDIO IN, CD PWB" 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.
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.
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
CD-MPX880H
–2
CHAPTER 1: GENERAL DESCRIPTION
[1] Safety Precaution For Service Manual
This product is classified as a CLASS 1 LASER PRODUCT.
WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF LASER POWER OUTPUT FOR THIS MODEL IS SPECIFIED TO
BE LOWER THAN CLASS I REQUIREMENTS. HOWEVER, THE FOLLOWING PRECAUTIONS MUST BE OBSERVED
DURING SERVICING TO PROTECT YOUR EYES AGAINTS EXPOSURE TO THE LASER BEAM.
BE LOWER THAN CLASS I REQUIREMENTS. HOWEVER, THE FOLLOWING PRECAUTIONS MUST BE OBSERVED
DURING SERVICING TO PROTECT YOUR EYES AGAINTS EXPOSURE TO THE LASER BEAM.
1-
WHEN THE CABINET HAS BEEN REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC,
AND THE PICKUP IS ON A POSITION OUTER THAN THE LEAD-IN POSITION, THE LASER WILL LIGHT FOR
SEVERAL SECONDS TO DETECT A DISC.
DO NOT LOOK INTO THE PICKUP LENS.
AND THE PICKUP IS ON A POSITION OUTER THAN THE LEAD-IN POSITION, THE LASER WILL LIGHT FOR
SEVERAL SECONDS TO DETECT A DISC.
DO NOT LOOK INTO THE PICKUP LENS.
2-
THE LASER POWER OUTPUT OF THE PICKUP INSIDE THE UNIT AND REPLACEMENT SERVICE PARTS
HAVE ALREADY BEEN ADJUSTED PRIOR TO SHIPPING.
HAVE ALREADY BEEN ADJUSTED PRIOR TO SHIPPING.
3-
NO ADJUSTMENT TO THE LASER POWER SHOULD BE ATTEMPTED WHEN REPLACING OR SERVICING
THE PICKUP.
THE PICKUP.
4-
UNDER NO CIRCUMSTANCES LOOK DIRECTLY INTO THE PICKUP LENS AT ANY TIME.
5-
CAUTION - USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
[2] Important Service Notes (For U.K. Only)
Before returning the unit to the customer after completion of a repair or adjustment it is necessary for the following withstand voltage test to be
applied to ensure the unit is safe for the customer to use.
applied to ensure the unit is safe for the customer to use.
Setting of Withstanding Voltage Tester and set.
Set name
set value
Withstanding Voltage Tester
Test voltage
Test voltage
4,240 VPEAK
3,000 VRMS
3,000 VRMS
Set time
6 secs
Set current (Cutoff current)
4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
PROBE
AC
OUT
UNIT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
1 – 1
CD-MPX880H
– 4
[3] Specifications
CD-MPX880H
General
(*) This power consumption value is obtained when the
demonstration mode is cancelled in the power stand-by mode.
Amplifier
Tuner
CD player
Cassette deck
Speaker
Power source
AC 220 - 240 V ~ 50 Hz
Power consumption Power on: 82 W
Power stand-by: 0.6 W (*)
Dimensions
Width: 260 mm (10 - 1/4" )
Height: 332 mm (13" )
Depth: 324 mm (12 - 7/8")
Height: 332 mm (13" )
Depth: 324 mm (12 - 7/8")
Weight
7.4 kg (16.31 lbs.)
Output power
PMPO: 880 W
MPO: 440 W (220 W + 220 W) (10 % T.H.D.)
RMS: 280 W (140 W + 140 W) (10 % T.H.D.)
RMS: 200 W (100 W + 100 W) (1 % T.H.D.)
MPO: 440 W (220 W + 220 W) (10 % T.H.D.)
RMS: 280 W (140 W + 140 W) (10 % T.H.D.)
RMS: 200 W (100 W + 100 W) (1 % T.H.D.)
Output terminals
Front Speakers: 6 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
(recommended: 32 ohms)
Input terminals
Audio In (audio signal):
250 mV/ 47 k ohms
250 mV/ 47 k ohms
Frequency range
FM: 87.5 - 108.0 MHz
AM: 522 - 1,620 kHz
Type
5-disc multi-play compact disc player
Signal readout
Non-contact, 3-beam semiconductor laser
pickup
pickup
D/A converter
1-bit D/A converter
Frequency
response
response
20 - 20,000 Hz
Dynamic range
90 dB (1 kHz)
Frequency
response
response
50 - 14,000 Hz (normal tape)
Signal/noise ratio
55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/playback)
50 dB (TAPE 2, recording/playback)
Wow and flutter
0.35 % (DIN 45 511)
Type
2-way type speaker system
5 cm (2") tweeter
16 cm (6-5/16") woofer
Maximum input
power
power
280 W
Rated input power
140 W
Impedance
6 ohms
Dimensions
Width: 200 mm (7-7/8")
Height: 330 mm (13")
Depth: 220.5 mm (8 - 11/16")
Height: 330 mm (13")
Depth: 220.5 mm (8 - 11/16")
Weight
3.18 kg (7.0 lbs.)/each
General
(*) This power consumption value is obtained when the
demonstration mode is cancelled in the power stand-by mode.
Amplifier
Tuner
CD player
Cassette deck
Speaker
Power source
AC 220 - 240V ~ 50Hz
Power consumption Power on: 82 W
Power stand-by: 0.6 W (*)
Dimensions
Width: 260 mm (10 - 1/4" )
Height: 332 mm (13" )
Depth: 324 mm (12 - 7/8")
Height: 332 mm (13" )
Depth: 324 mm (12 - 7/8")
Weight
7.4 kg (16.31 lbs.)
Output power
RMS: 280 W (140 W + 140 W) (10% T.H.D.)
RMS: 200 W (100 W + 100 W) (0.9% T.H.D.)
RMS: 200 W (100 W + 100 W) (0.9% T.H.D.)
Output terminals
Front Speakers: 6 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
(recommended: 32 ohms)
Input terminals
Audio In (audio signal):
250 mV/ 47 k ohms
250 mV/ 47 k ohms
Frequency range
FM: 87.5 - 108.0 MHz
AM: 522 - 1,620 kHz
Type
5-disc multi-play compact disc player
Signal readout
Non-contact, 3-beam semiconductor laser
pickup
pickup
D/A converter
1-bit D/A converter
Frequency
response
response
20 - 20,000 Hz
Dynamic range
90 dB (1 kHz)
Frequency
response
response
50 - 14,000 Hz (normal tape)
Signal/noise ratio
55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/playback)
50 dB (TAPE 2, recording/playback)
Wow and flutter
0.3% (WRMS)
Type
2-way type speaker system
5 cm (2") tweeter
16 cm (6-5/16") woofer
Maximum input
power
power
280 W
Rated input power
140 W
Impedance
6 ohms
Dimensions
Width: 200 mm (7-7/8")
Height: 330 mm (13")
Depth: 220.5 mm (8 - 11/16")
Height: 330 mm (13")
Depth: 220.5 mm (8 - 11/16")
Weight
3.18 kg (7.0 lbs.)/each
CD-MPX880H for U.K., Australia and New Zealand
1 – 2