CD-MPS440W Datasheet PDF - Sharp


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CD-MPS440W
Sharp

Part Number CD-MPS440W
Description MINI COMPONENT SYSTEM
Page 30 Pages

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CD-MPS440W
SERVICE MANUAL
No. S7557CDMS440W
MINI COMPONENT SYSTEM
MODEL CD-MPS440W
CD-MPS440W Mini Component System consisting of CD-MPS440W
(main unit) and CP-ES440 (Speaker System).
• In the interests of user-safety the set should be restored to its original con-
dition and only parts identical to those specified be used.
CONTENTS
CHAPTER 1. GENERAL DESCRIPTION
[1] PRECAUTION FOR USING LEAD-FREE
SOLDER ....................................................... 1-1
[2] SAFETY PRECAUTION FOR SERVICE
MANUAL ....................................................... 1-2
www.DataSheet.co.kr
[3] VOLTAGE SELECTION ................................ 1-2
[4] SPECIFICATIONS ........................................ 1-2
[5] NAMES OF PARTS....................................... 1-3
CHAPTER 2. ADJUSTMENTS
[1] ADJUSTMENT .............................................. 2-1
[2] TEST MODE ................................................. 2-2
CHAPTER 3. MECHANICAL DESCRIPTION
[1] REMOVING AND REINSTALLING THE
MAIN PARTS ................................................ 3-1
[2] DISASSEMBLY ............................................. 3-4
CHAPTER 4. DIAGRAMS
[1] BLOCK DIAGRAM MAIN .............................. 4-1
[2] BLOCK DIAGRAM DISPLAY ........................ 4-3
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 MAIN(1/3)...............6-2
[4] SCHEMATIC DIAGRAM MAIN(2/3)...............6-4
[5] SCHEMATIC DIAGRAM MAIN(3/3)...............6-6
[6] SCHEMATIC DIAGRAM POWER .................6-8
[7] SCHEMATIC DIAGRAM DISPLAY ..............6-10
[8] SCHEMATIC DIAGRAM CD........................6-12
[9] WIRING SIDE OF PWB ..............................6-14
[10] WIRING SIDE OF PWB MAIN TOP ............6-16
[11] WIRING SIDE OF PWB MAIN BOTTOM......6-18
[12] WIRING SIDE OF PWB POWER ................6-20
[13] WIRING SIDE OF PWB DISPLAY TOP ......6-22
[14] WIRING SIDE OF PWB DISPLAY BOT-
TOM.............................................................6-24
[15] WIRING SIDE OF PWB CD ........................6-26
CHAPTER 7. FLOWCHART
[1] TROUBLESHOOTING ..................................7-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] WAVEFORMS OF CD CIRCUIT ................... 5-1
[2] VOLTAGE...................................................... 5-2
CHAPTER 8. OTHERS
[1] FUNCTION TABLE OF IC .............................8-1
[2] FL DISPLAY ..................................................8-7
Parts Guide
SHARP CORPORATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
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CD-MPS440W
CHAPTERHCSMEeDoarmr-vkMieecPetSStMe4ra4en0ouWalS/M 1. GENERAL DESCRIPTION
[1] PRECAUTION FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
"MAIN, POWER, DISPLAY, HEADPHONES, TERMINAL, CD SERVO, T/T MOTOR, SWITCH, TAPE MECHANISM 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.
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.
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 withwww.DataSheet.co.kr 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 DCEKKV575SJ03
Main
PWB-B
PWB-C
DCEKNV575SJ03
DCEKSV575SJ03
Power(B1)/Display(B2)/Headphones(B3)/Terminal(B4)
CD Servo
PWB-F
T/T Motor
PWB-G
PWB-H
9GD192114325
Switch
Tape Mechanism
1–1
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[2] SAFETY PRECAUTION FOR SERVICE MANUAL
CD-MPS440W
Precaution to be taken when replacing and servicing the Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class 1 Requirements. However, the follow-
ing precautions must be observed during servicing to protect your eyes against 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 posi-
tion, 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.
3) No adjustment to the Laser Power should be attempted when replacing or servicing 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.
[3] VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage as follows.
Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110V,127V,220V or 230V - 240V AC).
[4] SPECIFICATIONS
General
Power source
Power
consumption
Dimensions
Weight
AC 110/127/220/230-240 V, 50/60 Hz
151 W
Width: 270 mm (10-5/8")
Height: 305 mm (12")
Depth: 342 mm (13-1/2")
7.2 kg (15.9 lbs.)
Amplifier
Output power
Output terminals
Input terminals
RMS: 150 W (75 W + 75 W) (10 % T.H.D.)
Speakers: 6 ohms
Headphones: 16 - 50 ohms
(recommended: 32 ohms)
Video/Auxiliary (audio signal):
500 mV/47 k ohms
CD player
Type
Signal readout
D/A converter
Frequency
response
Dynamic range
3-disc multi-play compact disc player
Non-contact, 3-beam semiconductor laser
pickup
1-bit D/A converter
20 -20,000 Hz
90 dB (1 kHz)
Specifications for this model are subject to change without prior
notice.
Tuner
Frequency range
FM: 87.5 - 108.0 MHz
AM: 530 - 1,720 kHz
Cassette deck
Frequency
response
Signal/noise ratio
www.DataSheet.co.kr
Wow and flutter
125 - 8,000 Hz (normal tape)
50 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/playback)
0.3 % (WRMS)
Speaker
Type
Maximum input
power
Rated input power
Impedance
Dimensions
Weight
Twin-drive speaker system
10 cm (4") full-range speaker 2
150 W
75 W
6 ohms
Width: 200 mm (7-7/8")
Height: 305 mm (12")
Depth: 220 mm (8-11/16")
3.5 kg (7.7 lbs.)/each
1–2
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CD-MPS440W
[5] NAMES OF PARTS
1
2
3
4
5
6
7
8
9
10
11
18
19
20
21
Front panel
1. Disc Tray
2. Timer Set Indicator
3. Memory/Set Button
4. On/Stand-by Button
5. Clock Button
12 6. Timer/Sleep Button
7. Tuning and Time Up Button
8. Tuning and Time Down Button
13 9. Headphone Socket
14
10. Tape 2 Record Pause Button
11. Tape 1 Cassette Compartment
15
12. Equaliser Mode Select Button
13. Extra Bass/Demo Mode Button
14. Volume Up and Down Buttons
16 15. Disc Tray Open/Close Button
16. Disc Skip Button
17. Tape 2 Cassette Compartment
17 18. Disc Button
19. Tape (1 2) Button
20. Disc or Tape Stop Button
21. Disc Track Down or Fast Reverse, Tape 2 Rewind,
Tuner Preset Down Button
22. Tuner (Band) Button
23. Video/Auxiliary Button
24. Disc Play or Repeat, Tape Play Button
22 25. Disc Track Up or Fast Forward, Tape 2 Fast Forward,
23 Tuner Preset Up Button
24
25
1 23 4 5
12 13
1
2
3
4
1
2
1
678 9
10
11
14 15
Displaywww.DataSheet.co.kr
1.Disc Number Indicators
2.Disc Play Indicator
3.MP3 Track Indicator
4.WMA Track Indicator
5.Tape Play Indicator
6.FM Stereo Mode Indicator
7.FM Stereo Receiving Indicator
8.Memory Indicator
9.Extra Bass Indicator
10.Timer Recording Indicator
11.Timer Play Indicator
12.Disc Pause Indicator
13.Disc Repeat Indicator
14.Tape Record Indicator
15.Sleep Indicator
5 Rear panel
1.Video/Auxiliary (Audio Signal) Input Sockets
6 2.Cooling Fan
3.AC Voltage Selector
4.AC Power Input Socket
5.FM/AM Loop Aerial Socket
6.Speaker Terminals
Note:
This product is equipped with a cooling fan inside, which begins to
run at a specified volume level for better heat radiation.
2 Speaker system
1.Full-Range Speakers
2.Bass Reflex Ducts
3.Speaker Wire
3
1–3
Datasheet pdf - http://www.DataSheet4U.net/




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