Sharp CD-MPS440W, CDMPS440 Diagram

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CD-MPS440W

SERVICE MANUAL

No. S7557CDMS440W

MINI COMPONENT SYSTEM

CONTENTS

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] 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

MODEL

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 condition and only parts identical to those specified be used.

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

CD-MPS440W

CHAPTER 5. CIRCUIT DESCRIPTION

[1] WAVEFORMS OF CD CIRCUIT .................... 5-1

[2] VOLTAGE....................................................... 5-2

SHARP CORPORATION

CHAPTER 8. OTHERS

[1] FUNCTION TABLE OF IC .............................8-1

[2] FL DISPLAY ..................................................8-7

Parts Guide

This document has been published to be used for after sales service only. The contents are subject to change without notice.

CD-MPS440W

Home StereoCD-MPS440WService ManualCD-MPS440W S/MMarketE

CHAPTER 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

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 fixingthe PWBsoldered withthe lead-free solder, apply lead-free wire solder. Repairing withconventional leadwire 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.

PWB-A

PWB-B

PWB-C

PWB-F

PWB-G

PWB-H

Parts No.

DCEKKV575SJ03

DCEKNV575SJ03

DCEKSV575SJ03

9GD192114325

Main

Power(B1)/Display(B2)/Headphones(B3)/Terminal(B4)

CD Servo

T/T Motor

Switch

Tape Mechanism

Description

PWB" of this model

1 – 1

CD-MPS440W

[2] SAFETY PRECAUTION FOR SERVICE MANUAL

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 following 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 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.

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 AC 110/127/220/230-240 V, 50/60 Hz

Power consumption

Dimensions Width: 270 mm (10-5/8")

Weight 7.2 kg (15.9 lbs.)

151 W

Height: 305 mm (12") Depth: 342 mm (13-1/2")

Amplifier

Output power RMS: 150 W (75 W + 75 W) (10 % T.H.D.)

Output terminals Speakers: 6 ohms

Headphones: 16 - 50 ohms (recommended: 32 ohms)

Input terminals Video/Auxiliary (audio signal):

500mV/47kohms

CD player

Type 3-disc multi-play compact disc player

Signal readout Non-contact, 3-beam semiconductor laser

D/A converter 1-bit D/A converter

Frequency response

Dynamic range 90 dB (1 kHz)

pickup

20 -20,000 Hz

Tuner

Frequency range FM: 87.5 - 108.0 MHz

AM: 530 - 1,720 kHz

Cassette deck

Frequency response

Signal/noise ratio 50 dB (TAPE 1, playback)

Wow and flutter 0.3 % (WRMS)

125 - 8,000 Hz (normal tape)

50 dB (TAPE 2, recording/playback)

Speaker

Type Twin-drive speaker system

10 cm (4") full-range speaker 2

Maximum input power

Rated input power 75 W

Impedance 6 ohms

Dimensions Width: 200 mm (7-7/8")

Weight 3.5 kg (7.7 lbs.)/each

150 W

Height: 305 mm (12") Depth: 220 mm (8-11/16")

Specifications for this model are subject to change without prior notice.

1 – 2

CD-MPS440W

[5] NAMES OF PARTS

Front panel

10 11

1

2

3 4

5 6 7

8 9

12

13

14

15

16

17

18 19

20 21

22 23

24 25

1. Disc Tray

2. Timer Set Indicator

3. Memory/Set Button

4. On/Stand-by Button

5. Clock Button

6. Timer/Sleep Button

7. Tuning and Time Up Button

8. Tuning and Time Down Button

9. Headphone Socket

10. Tape 2 Record Pause Button

11. Tape 1 Cassette Compartment

12. Equaliser Mode Select Button

13. Extra Bass/Demo Mode Button

14. Volume Up and Down Buttons

15. Disc Tray Open/Close Button

16. Disc Skip Button

17. Tape 2 Cassette Compartment

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

25. Disc Track Up or Fast Forward, Tape 2 Fast Forward, Tuner Preset Up Button

215 67893 4

1

2 3

4

1

2

1

Display

1.Disc Number Indicators

2.Disc Play Indicator

10 11

151412 13

5

6

2

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

Rear panel

1.Video/Auxiliary (Audio Signal) Input Sockets

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.

Speaker system

1.Full-Range Speakers

2.Bass Reflex Ducts

3.Speaker Wire

3

1 – 3

Remote control

CD-MPS440W

1

2

3

10

11

4

5

6

7

8

9

12 13 14

19 20 21 22

15 16

23

17

18

24 25 26

1.Remote Control Transmitter

2.On/Stand-by Button

3.Direct Search Buttons

4.Disc Track Down or Fast Reverse, Tape 2 Rewind, Tuner Preset Down Button

5.Disc or Tape Stop Button

6.Volume Down Button

7.Tuning and Time Down Button

8.Disc Button

9.Tuner (Band) Button

10.Disc Number Select Buttons

11.MP3/WMA Display Button

12.Volume Up Button

13.Disc Track Up or Fast Forward, Tape 2 Fast Forward, Tuner Preset Up Button

14.Disc Play or Repeat, Tape Play Button

15.Disc Pause Button

16.Tuning and Time Up Button

17.Video/Auxiliary Button

18.Tape (1 2) Button

19.Tape 2 Record Pause Button

20.Memory/Set Button

21.Clear Button

22.Disc Random Play Button

23.Equaliser Mode Select Button

24.Extra Bass Button

25.Clock Button

26.Timer/Sleep Button

1 – 4

CD-MPS440W

CHAPTER 2. ADJUSTMENTS

[1] ADJUSTMENT

1. MECHANISM SECTION

• Driving Force Check

Torque Meter Specified Value

Play: DM-300 Tape 1: Over 80 g

Tape 2: Over 80 g

• Torque Check

Torque Meter Specified Value

Tape 1 Tape 2 Play: DM-300 10 to 20 g.cm 10 to 20 g.cm Fast forward: DM-300 — Over 50 g.cm Rewind: DM-300 — Over 50 g.cm

• Tape Speed

Tape speed

Test Tape Adjust-

ing Point

TCC-119 Variable

Resistor in motor.

TAPE MECHANISM

Specified

Val ue

Instrument

Connection

3,000 ± 30 Hz Speaker Ter-

minal (Load resistance: 6 ohms)

• Check FM VT

Service Manual

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Frequency Display Check

Point

Instrument

Connection

87.5 MHz 87.5 MHz 2.2V ± 1.0V TP301 108 MHz 108 MHz 7.8V ± 1.0V TP301

• FM Mute Level

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Frequency Display Adjusting

Parts

98.00 MHz 98.00 MHz (30 dBµV)

VR351*1 Input: CNP301

Output: Speaker Terminal

*1. Adjust so that an output signal appears.

• FM Detection

Signal generator: 10.7MHz FM modulated

Tes t

Stage

Frequency Frequency

Display

Setting/

Adjusting

Point

FM IF 10.7 MHz 98.00 MHz T304

(Turn the core of transformer T304 fully counterclockwise)

• FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Instrument

Connection

Instrument

Connection

Input: Pin 1 of IC301

Variable Resistor in Motor

Tape Motor

Figure 1 ADJUSTMENT POINTS

2. TUNER SECTION

fL: Low-range frequency

fH: High-range frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage Frequency Frequency

Display

IF 450 kHz 1,620 kHz T351 *1 AM Band

— 522 kHz (fL): T306 Coverage AM Tracking 990 kHz 990 kHz T302 *1

Setting/

Adjusting

Parts

1.1 ± 0.1 V

Instrument

Connection

*2

Test

Stage

FM Band Coverage FM RF 98.00 MHz

Frequency Frequency

Display

Setting/

Adjusting

— 87.50 kHz (fL):L303

3.4 ± 0.1 V

98.00 MHz L302 *2

(10-30 dB)

*1. Input: Antenna Output: TP301 *2. Input: Antenna Output: Speaker terminal

MAIN PWB

IC302

R357

R356

TP302

T351

AM IF

VR351

FM MUTE Level

T306

AM BAND COVERAGE fL

FM BAND COVERAGE fL

L303

T304

T302

AM TRACKING fL

Figure 2 ADJUSTMENT POINTS

Point

FM IF

L302

FM RF

IC301

TP301

R381

Instrument

Connection

*1

CNP301

*1. Input: Antenna Output: Speaker terminal *2. Input: Input is not connected Output: TP301

2 – 1

[2] TEST MODE

The test mode applied to this microcomputer has three modes, namely the ordinary test mode for adjustment or measurement, the aging test mode, and the self-diagnosis test mode for self-judgment in case of final product inspection.

1. Turning on the test mode

For obtaining each test mode, press the ON/STAND BY button, while keeping pressing the following two buttons in the ordinary stand-by mode (power off). In this case, the main unit buttons are valid. When turning the POWER on with remote control buttons, test modes are not obtained.

[Ordinary test mode]

1. CD Test Mode (TEST 1)...........................................................

DISK + VOLUME UP

2. Tuner Test Mode (TEST 2)........................................................

TUNER(BAND) + VOLUME UP

3. Electronic Volume Test Mode (TEST 3).....................................

TUNING DOWN + VOLUME UP

4. Timer Test Mode (TEST 4).......................................................

TIMER/SLEEP + VOLUME DOWN

5. FL Test Mode (TEST 5)...........................................................

CLOCK + VOLUME DOWN

6. CD MECHANISM Aging Test Mode (TEST 8)...........................

MEMORY/SET + VOLUME DOWN

[Self-diagnosis Test Mode]

1. Button input diagnosis test mode (TEST 6)...............................

TUNING UP +VOLUME UP

Processes are different depending on destinations at initial settings.

2. CD Test Mode (TEST 1)

In the CD test mode the operation of each step is possible even if the LID-SW is off. If focus cannot be taken in step 3 or any error is processed, it is impossible to proceed to the next step. During error processing, end the test mode by pressing the ON/STAND BY button or return to the step 1 by pressing the CD STOP button. Any other operations are inhibited.

1. Step 1 Mode

When the CD test mode is obtained, the following display lights up. Then CD initialization operation flow proceeds up to CD STB off to wait for the following buttons to be pressed.

One second after display lights up

CD-MPS440W

Press the following buttons in this state to obtain the operations specified below.

"ON/STAND BY".................. Test mode and power turned off to shift

to the ordinary standby mode.

"FF/FWD"............................. After the pickup returns to the innermost

periphery, it slides toward the outer periphery while this button is pressed.

"REW/REV"......................... After the pickup returns to the innermost

periphery, it slides toward the inner periphery while this button is pressed. If

PICKUP IN is on, input is invalid.

"MEMORY/SET".................. Shift to step 2

"STOP"................................. Invalid

"VIDEO/AUX"....................... CLV

2. Step 2 Mode

Press the "MEMORY/SET" button in this mode to transmit the laser lighting command LDON (8400) and turn on the laser. Any other operations are not performed in this case.

Press the following buttons in this state to obtain the operations specified below.

"ON/STAND BY"................. Test mode and power turned off to

shift to the ordinary standby mode.

"FF/FWD"............................ The pickup slides toward the outer

periphery while this button is pressed.

"REW/REV"........................ The pickup slides toward the inner

periphery while this button is pressed. If PICKUP IN is on, input is invalid.

"MEMORY/SET"................. Shift to step 3

3. Step 3 Mode

While the laser keeps lighting, CD initialization operation flow proceeds up to 'CLV servo ON' to wait for the following buttons to be pressed.(Focus servo turned on for focus search)

The focus search is repeated to take focus.

Press the following buttons in this state to obtain the operations specified below.

"ON/STAND BY"................... Test mode and power turned off to shift

to the ordinary standby mode.

"FF/FWD".............................. The pickup slides toward the outer

periphery while this button is pressed.

"REW/REV"........................... The pickup slides toward the inner

periphery while this button is pressed. If PICKUP IN is on, input is invalid.

"MEMORY/SET"................... If focus has been taken, shift to step 4 is

executed. If not, acceptance is inhibited.

*If the focus is not received after it has been taken, the process returns to step 1.

2 – 2

CD-MPS440W

4. Step 4 Mode

The CLV servo ON command (8600) is transmitted to wait for the following buttons to be pressed. (The disc is rotated for CLV lock.)

The time display always indicates "0:00".

Press the following buttons in this state to obtain the operations specified below.

"ON/STAND BY"................... Test mode and power turned off to

shift to the ordinary standby mode.

"FF/FWD"............................. The pickup slides toward the outer

periphery while this button is pressed.

"REW/REV".......................... The pickup slides toward the inner

periphery while this button is pressed. If PICKUP IN is on, input is invalid.

"MEMORY/SET".................. Return to step 5

*If the focus is not received, the process returns to step 1.

5. Step 5 Mode

When the CD initialization operation flow is completed, the mute is turned off, and playback is started. Even if playback reaches the outermost periphery of disc, the operation does not stop. The LCD display indicates the playback passage time as in case of ordinary CD playback.

3. Tuner Test Mode (TEST 2)

1. Outline of tuner (radio) test mode

The tuner test mode is intended to store the adjustment and measurement frequencies in the preset memory CH. When adjusting the tuner section in the production line, adjusting personnel are not required to set frequency.

2. Details of tuner test mode

Press the "TUNER(BAND)" and "VOLUME UP" buttons in POWER OFF state and turn on the power by the use of "ON/STAND BY" button to preset and store frequency for adjustment and measurement of destination specified by the AREA terminal in the preset memory CH. However, Ordinary 1 and Ordinary 2 are stored in the destinations when the test mode is obtained.

(As for frequencies to be preset and stored for each destination, refer to item 3.)

The tuner test mode is started from preset No.1.

The operations of test mode are identical with the ordinary operations of TUNER function. FUNCTION switching is invalid.

It is necessary to discard the content of preset memory when the tuner test mode is ended; be sure to write "0000" or "1111" bits in the memory to be checked for judging memory error at initial setting and to initialize memory.

When the tuner test mode is obtained, the following display lights for one second.

Press the following buttons in this state to obtain the operations specified below.

"ON/STAND BY".................. Test mode and power turned off to shift

to the ordinary standby mode.

"FF/FWD"............................. The pickup slides toward the outer

periphery while this button is pressed.

"REW/REV"......................... The pickup slides toward the inner

periphery while this button is pressed.

If PICKUP IN is on, input is invalid.

"PLAY"............................... Invalid

"STOP"............................... Return to step 1

*If the focus is not received, the process returns to step 1.

Other cautions

• TOC IL is not available for this test mode.

• The TUNER TEST 2 mode is obtained with >> + MEMORY/SET + ON/STAND-BY. ->Turn off AC in the TEST 2 mode to restore the initial state.

Turn off POWER to protect the memory of TEST 2 mode.

Turn off POWER again to obtain the ordinary operation while the data is stored in the memory (besides TUNER).

If AC OFF state is maintained in this state for about 1/2 day, start is executed in the initial state.

• To clear the whole memory, insert the AC cord, pressing MEM-

ORY/SET + CD PLAY.

2 – 3

3. Preset frequencies for various destinations

(random preset memory)

CH BAND FM

1 2

FM STEREO

3 4 5

CH BAND FM

6 7

AM

8 9 10

FM 87.5 MHz FM108.0 MHz FM 98.0 MHz FM 90.0 MHz FM106.0 MHz

AM 530 kHz AM1720 kHz AM 990 kHz AM 600 kHz AM1400 kHz

CD-MPS440W

6. FL Test Mode (TEST 5)

When the FL test mode is obtained, all the FL segments are lighted. Then pressing the "PLAY" button switches display as below.

————–

Lighting of all segments

Lighting of odd segments

Lighting of even segments

CH BAND FM

16-35 —————— 36 37

FM MONO

38 39 40

• The slant line sections of the table store no memory.

FM106.0 MHz FM 90.0 MHz FM 98.0 MHz FM108.0 MHz FM 87.5 MHz

4. Electronic volume Test Mode (TEST 3)

When this test mode is obtained, the following display lights for one second.

In this mode, volume is Volume -14 dB (STEP 23), FLAT AND X-BASS ON, and start-up function to CD, respectively. The button operations in the test mode are the same as those of ordinary operation except volume UP/DOWN.

1) The display is the same as that of ordinary operation except test mode setting.

2) Unlike the ordinary state, the volume is controlled with the Volume UP/DOWN button in accordance with the following three steps.

Volume- ∞ (STEP 0) <-> Volume-14 dB (STEP 23) <-> Volume-0 (STEP 30)

3) X-BASS is switched when button is pressed.

5. Timer test Mode (TEST 4)

When this test mode is obtained, the following display lights for one second.

__________

7. Button input diagnosis Test Mode (TEST 6)

When the test mode is obtained, the following is displayed.

(STAND-BY AND DEMO OFF STATUS)

This test mode is intended to check whether all the main unit buttons can be detected. Accordingly, in this test mode, it is checked whether the "ON/STAND BY" button was pressed after all the buttons shown below were pressed. If the result is OK, OK is displayed. If any one of keys was not pressed, an error is displayed. In both cases of OK termination or error termination, the mode is shifted to the standby mode if the "ON/STAND BY" button is pressed subsequently.

All models using this type of microcomputer are not always provided with the same buttons. Since the buttons used are different depending on models, types of buttons to be used are determined by whether SURROUND, and an electric lid are available at the initial setting by MODEL port.

The order of buttons to be pressed is not determined. Accordingly, it is checked whether all buttons have been pressed.

1. PU-IN buttons: REW/PRESET DOWN + CD STOP

Since this model is provided with SURROUND (HAVE OR NOT), and electric CD lid, the following 10 buttons are detected as all buttons.

PLAY, X-BASS/DEMO, FUNCTION, VOLUME UP/DOWN, MEMORY/SET, REW, FF, STOP, DISK TRAY OPEN/CLOSE

The OK/ERROR display of test result is as follows.

Set the current time and timer time according to the following procedure to reproduce the timer.

1. Set the current time to 1:00, the timer to ON time 1:05, the function to CD, and volume to STEP 12, respectively. One minute is counted as one second, and the timer is reproduced. The fade-in (when playback is started) is executed at a rate of one step for 1 sec. After completion of fade-in, the fade-out is executed at a rate of one step for 1 sec (WAIT 1 sec inserted).

After completion of fade-out, the power is turned off (after WAIT 1 sec), and the mode is shifted to the standby.

The display during operation is the same as that of ordinary timer operation.

2 – 4

CD-MPS440W

8. CD MECHANISM Aging Test Mode (TEST 8)

OPEN/CLOSE & 3 DISC CHANGER aging test.

DISPLAY:

FUNCTION:

Enter the TEST MODE 8, MCU control the 3 DISC CHANGER OPEN/ CLOSE. After open finished, tray rotate 1 circle (360 degree). Then close, After close finished, tray rotate 1 circle (360 degree) again.

Request:

Every period include 4 operation. Below is TIMING:

Enter test mode

CHANGER

Find the disc 1 position

open

delay 3S after open finish

rotate 1 circle

close

delay 3S after close finish

rotate 1 circle

2 – 5

(D1)x2 ø2x4mm

(D2)x3 Special Screw

Motor

Motor Bracket

(D1)x2 ø2x4mm

Home StereoCD-MPS440WService ManualCD-MPS440W S/MMarketE

CHAPTER 3. MECHANICAL DESCRIPTION

[1] REMOVING AND REINSTALLING THE MAIN PARTS

CD-MPS440W

1. TAPE MECHANISM SECTION

Perform steps 1 to 6 and 8 of the disassembly method to remove the tape mechanism.

1.1. How to remove the record/playback and erase heads

(TAPE 1) (See Fig. 1)

1. When you remove the screws (A1) x 2 pcs., the record/playback head can be removed.

1.2. How to remove the playback head (TAPE 2) (See Fig.

2)

1. When you remove the screws (B1) x 2 pcs., the erase head can be removed.

2. When you remove the screws (B2) x 2 pcs., the record/playback head can be removed

NOTE: After replacing the heads and performing the azimuth adjust-

ment, be sure to apply screw lock.

1.3. How to remove the pinch roller (TAPE 1,2) (See Fig. 3)

1. when you remove the screw (C1) x 1pc., the pinch roller can be removed.

Note: When installing the pinch roller, pay attention to the spring mounting position.

1.4. How to remove the motor (See Fig. 4)

1. Remove the belt.

2. Remove the screws (D1) x 4 pcs., to remove the motor bracket.

3. Remove the screws (D2) x 3 pcs., to remove the motor.

(A1)x1 ø2x7mm

Record/ Playback Head

(B2)x1 ø2x7mm

(B1)x2 ø2x8mm

Erase Head

Record/ Playback Head

TAPE 1 TAPE 2

(A1)x1 ø2x3mm

Figure 1

(B2)x1 ø2x3mm

Figure 2

TAPE 1

TAPE 2

1.5. How to remove the belt (TAPE 1) (See Fig. 5)

1. Remove the main belt (F1) x 1 pc., from the motor side.

1.6. How to remove the belt (TAPE 2) (See Fig. 5)

1. Remove the main belt (G1) x 1 pc., from the motor side.

2. Remove the FF/REW belt (G2) x 1 pc.

REW/FF Clutch Ass'y

REW/FF Belt (G2)x1

Motor

TAPE 2 Main Belt (G1)x1

Main Belt (F1)x1

Figure 5

TAPE 1 Main Belt (F1)x1

Motor

TAPE 1

TAPE 2

Main Belt (G1)x1

3 – 1

Pinch Roller (C1)x1

Figure 3

Figure 4

<A>

Pinch Roller Pawl

CD-MPS440W

1.7. How to remove the flywheel (TAPE1,2) (See Fig. 6)

1. Remove the stop washer (H1) x 1 pc., with a small precision screwdriver to extract the flywheel from the capstan metal.

NOTE: When the stop washer is deformed or damaged, replace it with

a new one.

1.8. How to reinstall the parts

1. Install each part in the reverse order of the removal with care.

TAPE 1

TAPE 2

Mechanism Chassis

Washerx2

Flywheel

(H1)x1 Stop Washer

Stop Washer

Driver

1.9. How to remove the tape mechanism PWB (TAPE

1,2)(See Fig. 7)

1. Remove the screw (J1) x 1 pc., to remove the tape mechanism PWB.

2. Remove the screw (J2) x 1 pc.

3. Remove the solder joints (J3) x 2 pcs., to remove the tape mechanism PWB.

Tape Mechanism PWB

Figure 6

(J1)x1 ø2x3mm

Figure 7

TAPE 1,2

(J2)x1 ø2x8mm

Tape Mechanism PWB

(J3)x2 Solder Joint

3 – 2

2. CD PLAY SECTION

(A1)x2 ø2.4x3mm

(A3)x2 ø3x10mm

(A2)x1

Loading Tray (Bottom View)

Loading Tray

T/T Motor PWB

T/T Rotate Motor

(B1)x2 ø2.4x5mm

Up/Down Loading Motor

CD Player Unit

(B2)x1

Holder

CD Mechanism Unit

Holder PWB

(C1)x4 ø2.5x10mm

Perform steps 1, 2, 3, 10, 11 and 12 of the disassembly method to remove the CD mechanism.

2.1. How to remove the T/T rotate motor (See Fig. 1)

1. Remove the screws (A1) x 2 pcs.

2. Remove the belt (A2) x 1 pc.

3. Remove the screws (A3) x 2 pcs., to remove the T/T rotate motor.

CD-MPS440W

2.2. How to remove the up/down loading motor (See Fig.2)

1. Remove the screws (B1) x 2 pcs.

2. Remove the belt (B2) x 1 pc.

2.3. How to remove the CD mechanism unit (See Fig.3)

Perform steps 1, 2, 3, 10 and 13 of the disassembly method to remove the CD mechanism.

1. Remove the screws (C1) x 4 pcs., to remove the mechanism unit.

NOTE: After removing the connector for the optical pickup from the

connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage.

Figure 1

Figure 2

Figure 3

3 – 3

Side Panel (Right)

Side Panel (Left)

Top Cabinet

Front Panel

(A1)x2

ø3x16mm

(A1)x2

ø3x16mm

(B1)x2

ø3x8mm

(B1)x2

ø3x8mm

(B1)x4

ø3x10mm

(A1)x1

ø3x8mm

Rear Panel

1

2

(D1)x6

ø3x8mm

(D1)x2

Special

(E1)x2

ø3x6mm

CD Player Unit

CD Tray Cover

(E1)x1

Special

(C2)x1

(C3)x1

CD Servo PWB

(C1)x1

Pull

(C2)x1

Pull

Main PWB

Rear Panel

CD-MPS440W

[2] DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:

1) Take cassette tape and compact disc out of the unit.

2) Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

3) Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange the leads where they were before disassembling.

4) Take sufficient care on static electricity of integrated circuits and other circuits when servicing.

STEP REMOVAL PROCEDURE FIGURE

1 Top Cabinet 1. Screw......................(A1) x 5 1

2 Side Panel

(Left/Right)

3 CD Player unit 1.

4 Rear Panel 1. Screw......................(D1) x 8 2

5Main PWB 1.

6 Front PWB 1.

7 Display PWB 1. Screw....................(G1) x 13 5

8 Tape Mecha-

nism

9 Headphones

PWB

10 CD Servo

PWB

11 Turntable 1.

12 Loading Tray 1.

13 CD Mechanism

Block

Note 1: How to open the change manually. (Fig. 3)

1. In this state, turn fully the loading Gear in the arrow direction through the hold on the loading tray bottom.

2. After that, push forward the loading tray.

Note 2:

1. After removing the connector for the optical pickup from the connector, wrap the conductive aluminium foil around the front end of the connector so as to protect the optical pickup from electrostatic damage.

1. Screw......................(B1) x 8 1

Turn on the power supply, open the disc tray, take out the CD tray cover, and

close.......................(Note 1)

CD Tray Cove.........(C1) x 1

2.

Hook.......................(C2) x 2

3.

Socket.....................(C3) x 1

4.

Socket.....................(C4) x 2

5.

Screw......................(E1) x 3

Socket.....................(E2) x 9

2.

Socket.....................(E3) x 2

3.

Screw......................(F1) x 3

Hook........................(F2) x 2

2.

Socket.....................(F3) x 1

3.

1.2.Open the cassette holder.

Screw......................(H1) x 8

1. Screw.......................(J1) x 1 5

Screw......................(K1) x 4

1.

Socket.....................(K2) x 3

2.

Flat Cable...............(K3) x 1

3.

Solder......................(K4) x 2

4.

Screw......................(L1) x 1

2.

Spacer.....................(L2) x 1

Push forward the loading tray. Inserting the flat head into

2. the hole, push in the direction indicated by the

arrow......................(M1) x 2

1. Hook.......................(N1) x 2 8

Figure 1

2

4

2 4 5

4

5

6

7

Figure 2

Front Side

Loading Gear

or

CD Player Unit (Bottom View)

Figure 3

3 – 4

CD-MPS440W

Screwdriver

Turntable

Loading Tray

Screwdriver

(L1)x1

ø3x10mm

(L2)x1

(M1)x1

(F2)x1

(E2)x1

Power PWB

(E2)x2

(E2)x1

(C4)x2

(F3)x1

(E2)x4

Figure 4

Main PWB

Front Panel

(F2)x1

(F1)x3

ø3x8mm

T/T Motor PWB

Switch PWB

(K2)x3

CD Servo PWB

Figure 6

(K1)x4 ø3x10mm

(K3)x1

CD Mechanism Block

Solder (K4)x2

CD Player Unit

(G1)x13

ø2.5x10mm

Display PWB

(H1)x8

ø3x8mm

Headphones

PWB

Front Panel

(J1)x1

ø

2.5x8mm

Figure 5

(E3)x2

Tape Mechanism

Open

Cassette Holder

CD Mechanism Block

Figure 7

Hook (N1)x1

Pull

Hook (N1)x1

CP-ES440

These speaker CP-ES440 are available in assembles only and may not be disassembled.

Pull

Figure 8

3 – 5

CD-MPS440W

F

B

N

B

O

S

9

DGND

CHAPTER 4. DIAGRAMS

[1] BLOCK DIAGRAM MAIN

AM LOOP ANTENNA

FROM

CD SECTION

CNS205

RECORD/

PLAYBACK HEAD

TAPE 2

ERASE

HEAD

TAPE 2

SW801

INITIALIZE

SW803

REC

SOL801

SOLENOID

PHOTE INTERRUPTER

TAPE 1

SW802

INITIALIZE

SOL802

SOLENOID

PHOTE INTERRUPTER

FM

ANTENNA

3 2 1

CNP301

TAPE 1

PLAYBACK

HEAD

L-CH R-CH

P.B.

L-CH R-CH

CNP205

1 2 3

REC

SWITCHING

B.P.F

BF301

AM TRACKING

T302

L

R

+B2

Q821 Q822 Q823

BIAS CONT SWITCHING

TA7358AP

1

FM FRONT END

2

3

FM RF

L302

SWITCHING

Q801

Q807,Q808

Q803

Q813,Q814

Q802

Q810 Q811

SWITCHING

Q820

6

IC301

4

T306

SWITCHING

Q809

U_CON5V

Q806

5

SWITCHING

FM IF FM IF

7

FM

T304

OSC

CF303

9

8

FM MPX./AM IF

L303

OSC BUFF

Q302

AM BAND

COVERAGE

FM

SWITCHING

L(T1)

1

R(T1)

24

2

L(T2) R(T2)

23

LNF

3

RNF

22

6

L REC

REC

9

16

RREC

REF

14

15

12 11

M801

TAPE

MOTOR

+B3

Q306

IC303

LA1832S

FM IF DET./

FM MUTE

LEVEL

VR351

FM OSC

VT

20

FM

Q360

13

P.B

L

4

R

21

5

20

LREC

7

R

18

LNF

8

RNF

17

ALC

10

19

M

CF302

CF352

T351 AM IF

1

2

AM MIX

LA1832S

AM OSC

OUT

21

2324

AM OSC IN

X352

4.5 MHz

22

1

OSC

IC302

LC72131

PLL(TUNER)

7

+B2

PB

PLAYBACK AND RECORD

/PLAYBACK AMP.

+B2

TAPE MOTOR

DRIVER

Q815 Q818

Q804 Q817

SOLENOID

DRIVER

+B2

Q805 Q816

SOLENOID

DRIVER

4

AM IF

GND

IC303

AM RF IN

FM IN

AM IN

1516

FM/AM

IC801

AN7345K

Q812 Q819

VCC

FM/AM

OUT

18

10

76

SD

IF OUT

STEREO

DI

CE

4

11

3

MO/ST

21

10

98

985

CF351

FM

DET

CL

5

DZH05C2+

17

MO/ST

VCO

FM/AM

MPXIN

12

16

DO

6

17

MUTE

TAPE_SW

T2_RUN_PLUS

T1_RUN_PLUS

T_MOTOR

REC/PLAY

X351

456 kHz

13

L

14

R

15

Q351

SWITCHING

T2_SOL

T1_SOL

CH_SW

BIAS

REC

CNP803

FR

DISPLAY

CE

FM ST

TUNER

CNS803

FROM

DISPLAY SECTION

CNS901

CL

AUX

TAPE

CD

CNS2

DO

DG

234567

DI

L

R

1 1

L

R

1

L

1

R

1

L

1

R

1

+

V

Ð

+

+B2

CNP202

SD

1

2

3

4

5

6

7

8

9

10

Figure 4-1 BLOCK DIAGRAM (1/4)

4 – 1

CD-MPS440W

CNS901

FROM

ISPLAY SECTION

CNS202

1234

DI

CL

DO

D_GND

9

L

AUX

R

16 10

L

TAPE

R

15

L

11

UNER

CD

AUDIO PROCESSOR

R

14

L

12

R

13

LC75341M

8

7

17

VIDEO/AUX IN

IC601

18

FROM

CD SECTION

CNS204

DI

CL

DO

SO601

DI

CE

CL

3

+B2

M_GND

23

CNP204

+7V

+B5

1 2

24

21

4

654321

D_GND

R L

L

POWER AMP.

15

R

1

IC101

STK40290

+VCC

PRE

+VCC

8

4

ÐVCC

9

+B3

Q101 Q102

SYSTEM

MUTE

PRE

ÐVCC

12

10 11

6 7

Q201 Q202

Q103 Q104

R-OUT

L-OUT

Q204 Q205

Q105 Q106

+B4

Q108 Q109

RLY101

+B2

+B3

CD_+B

MUTE

SIGAL_LVL SP_RLY

SP_DETECT

FAN_START

FAN_PRT

Q107

Q208

M201

FAN

M

MOTOR

CNW202

1

2

3

4

5

6

7

JK101

HEADPHONES

SO101

SPEAKER

TERMINAL

FROM

DISPLAY SECTION

CNS102

+B4

+B5

+B2

VF1

VF2

ÐB2

+B3

DGND

+B3

CD+B

A_12V

CNP901

1

2

3

4

5

CD_7V

+5.6 V

Ð30 V

+5.6 V

Q207

VOLTAGE

REGULATOR

VF2

VF1

Q206

IC203

KIA7808API

VOLTAGE

REGULATOR

IC202

KIA7812API

VOLTAGE

REGULATOR

IC201

KIA7805API

VOLTAGE

REGULATOR

+B1

ÐB1

D905~D908

T5AL250V

D901~D904

F902

T5A L 250V

T1.6A L 250V

Q901

VOLTAGE

REGULATOR

F901

F903

POWER TRANSFORMER

T101

+B2

230-240V

110V

127V

220V

SO901

230-240 V, 50/60 Hz

SW901

VOLTAGE

SELECTOR

AC POWER

SUPPLY CORD

AC 110/127/220/

Figure 4-2 BLOCK DIAGRAM (2/4)

4 – 2

CD-MPS440W

[2] BLOCK DIAGRAM DISPLAY

TO MAIN SECTION

CNS205

32

X401

16.9344 MHz

R-CH

AGND

1

57

65

67

71

77

72

73

L-CH

20

26

37

40

42

53

~

AVSS

VVSS1

DVSS

VVSS3

DVSS

VVSS2

DVSS

XVSS

LRVSS

XOUT

XIN

AVDD

21

79

+5.6VDIDO

+7V (+B5)

DGND

MGND

5

64

312

Q411,412,413

CONSTANT

VOLTAGE

78

75

LCHO

RCHO

LC78690

MP3 DECODER

DIGITAL SIGNAL

PROCESSOR

AVDD

VREF

11

CNS204

76

LRVDD

IC401

CIN

AIN

765

46 43

6245

DI

CL

DO

LDS

FIN

EIN

DIN

BIN

14

19

13

8

Q409

47

18

RESB

LDD

CE

VVDD1

DVDD

VVDD3

DVDD

VVDD2

DVDD

XVDD

CONT2

PUIN

FDO

TDO

SPDO

SLDO

LASER

DRIVER

CONSTANT

VOLTAGE

30

36

39

41 61 68

74

50

32

22

23

25

24

CD_CE

ROTATE

CD RES

CLOSE_SW

MM+

MM-

CD_CL

11

12 810 9 6745231

CNP405

Q410

+7V

Q401,402 Q403,404 Q405,406 Q407,408

MUTE

2

4

FOCUS/TRACKING/

12

19

27

1

VCC VCC

30

VREF

29

51110 146

DOWN_SW

OPEN_SW

DISC NO._SW

DISC 1_SW

IC402

LA6548HN

SPIN/SLED

DRIVER

UP_SW

REG_OUT

+

M

Ð

M

+

M401

UP/DOWN LOADING

MOTOR

21

20 26 25

SW401 DISC UP/DOWN

SW402 OPEN/CLOSE

SW403 DISC NO.

SW404 DISC 1

M402

ROTATE

MOTOR

24

~~

22

9

7

VCC

E

C

A

B

C

VC

F

LD

MD

FOCUS COIL

TRACKING COIL

CD PICKUP UNIT

NM802

SPINDLE

MOTOR

NM801

SLED

MOTOR

M

+

Ð

+

SW1

PICKUP IN

Figure 4-3 BLOCK DIAGRAM (3/4)

4 – 3

TO MAIN SECTION

TO POWER SECTION

DISC_UP_SW

DISC_DOWN_SW

OPEN_SW

DISC_NO._SW

DISC 1_SW

CLOSE_SW

ROTATE

CD_RES

CD_CLK

TAPE_SW

T2_RUN_PLUS

T2_SOL

T1_SOL

T1_RUN_PLUS

CH_SW

MOTOR

TAPE_BIAS

REC_PLAY

REC SW

FAN_PRT

FAN_START

SP_DETECT

SP_RELAY

SIGAL_LVL

P_MUTE

D_GND

CD_CE

MM+

MM-

CD+B

VF1 VF2

ÐB2

+B3

CNS901

1

2

3

4

5

CNS405

1

2

3

4

5

6

7

8

9

10

11

12

CNS803

1

2

3

4

5

6

7

8

9

10

CNS102

7

6

5

4

3

2

1

3.8V

Ð30V

5.6V +B3

VF2

3233

FL DISPLAY

31 16

~

67

52

~ ~

P5

70

DISC_UP_SW

74

DISC_DOWN_SW

75

OPEN_SW

68

DISC_NO_SW

69

DISC1_SW

71

CLOSE_SW

73

ROTATE

4

CD_CE

CD_RES

5

MM+

6

MM-

7

CD_CL

97

89

GND

23

T2_TAPE2_SW

83

T1_RUN_PLUS

81

T2_SOL

80

T1_SOL

82

T1_RUN_PLUS

84

CH_SW

79

MOTOR

76

TAPE_BIAS

REC_PLAY

77

REC

78

P20

MICROCOMPUTER

FAN_PRT

FAN_START

SP_DETECT

SP_RELAY

SIGAL_LVL

21 92 93 94 91 88 85 95 96 11 2697 98 99

P_MUTE

VFD701

15 12

5051

P4

GND

IC701

IXA057SJ

SYSTEM

D1

CD+B

CD-MPS440W

11 3

~

47

~ ~

P1

CL

D0

~

38

30

~ ~

G9

G1

SD

FM_ST

CE

100

IRQ

POWER_KEY

X-BASS/DEMO

KEY2_IN

KEY1_IN

CF2

CF1

GND

XT2

XT1

VDD1

VDD2

VDD3

VDD4

RESET IN PUT

VF1

112

Q701

29

28

27

19

18

16

X702

8 MHz

15

14

13

X701

12

32.768 kHz

17

90

46

72

RESET

Q702,Q703,Q704

LED701

REMOTE SENSOR

RX701

SW702

ON/STAND-BY

SW701

X-BASS

/DEMO

KEY SW703~SW710 SW719~SW721

KEY SW711~SW715 SW722~SW724

+B3

D_GND

FM_ST

D1

D0

CL

CE

SD

CNS202

1

2

3

4

5

6

7

Figure 4-4 BLOCK DIAGRAM (4/4)

4 – 4

CD-MPS440W

Home StereoCD-MPS440WService ManualCD-MPS440W S/MMarketE

CHAPTER 5. CIRCUIT DESCRIPTION

[1] WAVEFORMS OF CD CIRCUIT

1

2

1

3

IC401 22

IC401 23

IC401 22

IC401 16

Stopped

CH1=500 mV

DC 10:1

T

FDO

1

TDO

3

Smoothing : ON CH1 : 0.000 V BW : FULL

1

3

Smoothing : ON CH1 : 0.000 V BW : FULL

CH2 : 0.0 V CH3 : 0.000 V CH4 : 0.00V

Stopped

CH1=500 mV

DC 10:1

FDO

TE

-3 div -1 div 0 div +1 div +3 div

CH2 : 0.0 V CH3 : 0.00V CH4 : 0.00V

CH2=10 V DC 10:1

CH Position To

CH3=500 mV

DC 10:1

=Record Length=

Main : 100 K Zoom : 2 K

CH3=1 V

DC 10:1

=Record Length=

Main : 100 K Zoom : 2 K

500 ms/div

(500 ms/div)

NORM:20 kS/s

CH1

v/DIV 500 mV

=Trigger==Filter= =Offset= Mode : AUTO Type : EDGE CH1 Delay : 0.0ns Hold off : 0.2 µs

500 ms/div

(500 ms/div)

NORM:20 kS/s

CH2

Position

0.20 div

=Trigger==Filter= =Offset= Mode : AUTO Type : EDGE CH1 Delay : 0.0ns Hold off : 0.2 µs

1

5

6

7

1

IC401 22

IC401 2 5

IC401 28

IC401 27

IC401 22

DC 10:1

T

CH2=500 mV

DC 10:1

CH2 : 0.000 V CH3 : 0.00V CH4 : 0.00V

CH2 : 0.0 V CH3 : 0.00V CH4 : 0.00V

T

Stopped

CH1=200 mV

T

FDO

2

SPDO

1

Smoothing : ON CH1 : 0.000 V BW : FULL

Stopped

CH1=500 mV

DC 10:1

PDOUT0

3

4

PDOUT1

T

FDO

1

Smoothing : ON CH1 : 0.000 V BW : FULL

Stopped

CH1=2 V

T

=Record Length=

Main : 100 K Zoom : 2 K

CH3=1 V

DC 10:1

=Record Length=

Main : 100 K Zoom : 2 K

1999/04/07 09:51:15

500 ms/div

(500 ms/div)

NORM:20 kS/s

=Trigger==Filter= =Offset= Mode : NORMAL Type : EDGE CH2 Delay : 2.924 ms Hold off : 0.2 µs

1999/04/05 17:33:17

CH4=1 V

500 ms/div

(500 ms/div)

DC 10:1

NORM:20 kS/s

=Trigger==Filter= =Offset= Mode : AUTO Type : EDGE CH2 Delay : 0.0 ns Hold off : 0.2 µs

1999/04/07 09:25:28

500 ns/div

(500 ns/div)

NORM:200 MS/s

CH1

v/DIV 500 mV

4

IC401 16

3

IC401 2

RF

Stopped

CH1=10 V

DC 10:1

TE

2

=Filter= =Offset= Smoothing : ON CH1 : 0.0V BW : FULL

T

CH2=1 V

DC 10:1

CH2 : 0.00 V CH3 : 0.00 V CH4 : 0.00 V

=Record Length=

Main : 100 K Zoom : 2 K

Vp-p=1.0 V~1.3 V

0.5 mV/div,0.5 µsec/div

100 ms/div

(100 ms/div)

NORM:100 kS/s

=Trigger= Mode : NORMAL Type : EDGE CH1 Delay : 2.924 ms Hold off : 0.2 µs

8

9

10

11

IC401 69

IC401 60

IC401 59

IC401 58

1

DOUT

Smoothing : ON CH1 : 0.00V BW : FULL

1

2

T

3

Smoothing : ON CH1 : 0.00V BW : FULL

Stopped

LRSY

DATACK

DATA

CH1=2 V

DC 10:1

CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

T

CH2=2 V

DC 10:1

CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

=Record Length=

Main : 1 K Zoom : 100

CH3=2 V

DC 10:1

=Record Length=

Main : 5K Zoom : 100

=Trigger==Filter= =Offset= Mode : NORMAL Type : EDGE CH1 Delay : 2.887 ms Hold off : 0.2 µs

1999/04/05 20:50:17

5 µs/div

(5 µs/div)

NORM:100 kS/s

CH3

v/DIV

=Trigger==Filter= =Offset= Mode : AUTO Type : EDGE CH3 Delay : 0.0 ns Hold off : 0.2 µs

2V

5 – 1

[2] VOLTAGE

CD-MPS440W

PIN NO.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15

1

2

3

1

2

3

1

2

3

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

IC101

VOLTAGE

1.45V 0V

0.02V

27.3V

-26.1V 0V 0V

28.5V

-28.5V 0V 0V

-27.2V 0V 0V 0V

IC201

VOLTAGE

19V

0.65V

5.61V

IC202

VOLTAGE

19V

0V

12V

IC203

VOLTAGE

19V

0V

7.9V

IC402

VOLTAGE

7.1V

1.6V 0V

1.6V 3V 3V 0V 0V 0V

3.1V

1.6V

1.64V

3.8V

3.2V

6.48V

3.25V

1.64V

1.6V 3V 3V 0V 0V 0V 3V 3V

1.6V

1.65V 0V

7.1V

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

1 2 3 4 5 6 7 8 9

IC401

VOLTAGE

1.6V 1V

1.6V

1.5V

3.25V 0V

1.6V

1.63V

1.6V

1.4V

0.09V

1.1V

3.2V 0V

1.6V

0.04V 0V

3.25V

2.30V

3.25V

0.04V 0V 0V 0V 0V 0V 0V 0V 0V

3.25V 0V 0V

3.5V

1.73V 0V 0V

1.6V

1.55V

1.65V

1.64V

0.04V

0.04V 0V 0V 0V 0V 0V 0V 0V 0V 0V 0V

4.86V

5.11V

5.05V

4.86V 0V

5.04V 0V 0V

0.63V

0.50V

0.64V

0.01V 0V

1.04V

3.25V

2.47V 0V

3.23V

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

PIN NO.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

PIN NO.

1 2 3 4 5 6 7 8 9

E C B

IC601

VOLTAGE

3.7V 0V 0V

3.52V

3.5V

3.52V

3.52V 7V

3.52V

IC801

VOLTAGE

0V 0V

0.56V

2.42V 0V

0.06V 0V

0.58V

4.10V 0V 0V 0V

8.25V

4.82V 0V

4.1V

0.58V 0V

2.5V 0V

2.4V

0.56V 0V 0V

Q101

VOLTAGE

0V 0V

0.625V

Q102

VOLTAGE

0V 0V

0.63V

Q103

VOLTAGE

0V

5.3V 0V

Q104

VOLTAGE

0V

5.34V 0V

Q105

VOLTAGE

0V

5.28V 0V

Q106

VOLTAGE

0V

5.28V 0V

PIN NO.

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

E C B

1 2 3

VOLTAGE

0V 0V

4.6V 0V 0V 0V

1.69V 0V 0V 0V

4.83V 0V 0V 0V

2.22V

2.48V

4.85V

4.81V

4.82V

5.29V

0.7V

4.8V 0V 0V

4.83V

4.82V

4.86V

-27V

-24.85V

-20.48V

-16.61V

-4.82V

-24.83V

-16.57V

Q107

VOLTAGE

0.06V

0.13V

0.87V

Q108

VOLTAGE

5.57V 0V

5.5V

Q109

VOLTAGE

0V

4.88V 0V

IC701

PIN NO.

51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100

PIN NO.

VOLTAGE

-27.26V

-13.05V

-20.14V

-27.35V

-23.70V

-27.25V

-28.12V

-23.72V

-23.63V

-22.71V

-27.27V

Q206

VOLTAGE

E C B

Q207

VOLTAGE

E C B

Q208

VOLTAGE

E C B

Q302

VOLTAGE

E C B

-13V

4.72V

4.72V 0V 0V 0V

4.71V

4.71V 0V

4.72V

4.72V 0V 0V 0V 0V 0V

4.57V

4.87V

4.77V

4.77V 0V

4.88V

5.34V 0V

4.87V

4.30V 0V 0V

4.64V 0V 0V 0V

7.43V

0.02V

7.98V

0V

7.43V 0V

0.83V

0.66V 0V

0V

0.4V

2.3V

PIN NO.

E C B

1 2 3

E

C

B

E

C

B

E

C

B

E

C

B

E

C

B

1 2 3

E C B

Q306

VOLTAGE

0V

0.8V

3.0V

Q351

VOLTAGE

5V 0V 0V

Q401

VOLTAGE

0V 4V 0V

Q402

VOLTAGE

0.45V 0V

5.96V

Q403

VOLTAGE

0V

5.9V 0V

Q404

VOLTAGE

0V

5.96V 0V

Q405

VOLTAGE

6.46V 0V

5.96V

Q406

VOLTAGE

0V 5V 0V

Q407

VOLTAGE

0V 6V 0V

Q408

VOLTAGE

0.1V 0V

5.9V

Q409

VOLTAGE

3.24V 0V

2.26V

Q411

VOLTAGE

7.13V

3.27V

6.49V

Q412

VOLTAGE

5.10V

7.14V

5.8V

PIN NO.

E C B

1 2 3

E C B

1 2 3

E C B

1 2 3

Q701

VOLTAGE

0V

3.72V 0V

Q702

VOLTAGE

0V

4.84V 0V

Q703

VOLTAGE

0.3V

4.83V

0.31V

Q704

VOLTAGE

0.31V

1.66V

Q801

VOLTAGE

0V 0V

0.03V

Q802

VOLTAGE

4V

3.96V

3.33V

Q803

VOLTAGE

0V 0V

0.03V

Q804

VOLTAGE

11.8V

0V

11.9V

Q805

VOLTAGE

11.9V

0V

11.8V

Q806

VOLTAGE

0V 0V 0V

Q807

VOLTAGE

0V 0V

0.7V

Q808

VOLTAGE

0V 0V

0.7V

Q809

VOLTAGE

0V 0V 0V

Q810

VOLTAGE

0V

0.02V

3.65V

PIN NO.

1 2 3

E

C

B

E

C

B

E

C

B

E C B

1 2 3

E C B

1 2 3

E C B

Q811

VOLTAGE

0V

0.04V

3.65V

Q812

VOLTAGE

0V 0V

0.65V

Q813

VOLTAGE

0V 0V

0.7V

Q814

VOLTAGE

0V 0V

0.7V

Q815

VOLTAGE

11.9V 0V

11.9V

Q816

VOLTAGE

0V

11.8V 0V

Q817

VOLTAGE

0V

11.8V 0V

Q818

VOLTAGE

0V

11.6V 0V

Q819

VOLTAGE

0V 0V

0.65V

Q820

VOLTAGE

4.9V 0V

4.9V

Q821

VOLTAGE

11.9V 0V 0V

Q822

VOLTAGE

11.9V 0V

11.9V

Q823

VOLTAGE

0V 0V 0V

Q901

VOLTAGE

-27.8V

-38V

-28.4V

5 – 2

CD-MPS440W

-MEMO-

5 – 3

Home StereoCD-MPS440WService ManualCD-MPS440W S/MMarketE

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[1] NOTES ON SCHEMATIC DIAGRAM

CD-MPS440W

•Resistor:

To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type.

• Capacitor:

To indicate the unit of capacitor, a symbol P is used: this symbol P means pico-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used.

(CH), (TH), (RH), (UJ): Temperature compensation

(ML): Mylar type

(P.P.): Polypropylene type

• Schematic diagram and Wiring Side of P.W.Board for this model are subject to change for improvement without prior notice.

REF. NO DESCRIPTION POSITION

SW1 PICKUP IN ON—OFF SW401 DISK UP/DOWN ON—OFF SW402 OPEN/CLOSE ON—OFF SW403 DISC NO. ON—OFF SW404 DISC1 ON—OFF SW701 X-BASS/DEMO ON—OFF SW702 ON/STAND-BY ON—OFF SW703 OPEN/CLOSE ON—OFF SW704 DISK SKIP ON—OFF SW705 VIDEO/AUX ON—OFF SW706 TAPE ON—OFF SW707 PRESET DOWN ON—OFF SW708 PLAY/REPEAT ON—OFF SW709 PRESET UP ON—OFF

• The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given.

1. In the tuner section,

indicates AM

indicates FM stereo

2. In the main section, a tape is being played back.

3. In the deck section, a tape is being played back.

4. In the power section, a tape is being played back.

5. In the CD section, the CD is stopped.

• 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.

REF. NO DESCRIPTION POSITION

SW710 STOP ON—OFF SW711 MEMORY/SET ON—OFF SW712 TUNING/TIME DOWN ON—OFF SW713 TUNING/TIME UP ON—OFF SW714 TIMER/SLEEP ON—OFF SW715 CLOCK ON—OFF SW719 EQUALISER ON—OFF SW720 VOLUME UP ON—OFF SW721 VOLUME DOWN ON—OFF SW722 TUNER(BAND) ON—OFF SW723 DISK ON—OFF SW724 REC/PAUSE ON—OFF SW801 TAPE2 INITIALISE ON—OFF SW802 TAPE1INITIALISE ON—OFF SW901 VOLTAGE SELECTOR 230-240V

[2] TYPES OF TRANSISTOR AND LED

FRONT

VIEW

EC B (S) (G) (D) (1) (2) (3)

2HA1015 GR 2HC1815 GR KTC3200 GR KTC3203 Y KTA1271 Y KRA107 M KRC107 M

KRC102 M KRA102 M KRC104 M 2SC2001 K 2SC535-C 2SB562 C 2HJ9018 G

LP3052A

6 – 1

FRONT VIEW

SVC348S KDV147B

CD-MPS440W

M

5

R358

3

[3] SCHEMATIC DIAGRAM MAIN(1/3)

A

9P(UJ)

1.5V

C337

L302

FM RF

0.022

C308

0.022

5.2V

C318

5P

C303

0.001

R301

0.001

C309

AM TRACKING

T302

MW ANT

C329

0.022

AM OSC.

T306

MW OSC

AM BAND COVERAGE fL

1.5V

R302

100K

22

12P

(CH)

C330

C335 560P

R323

IC301

TA7358AP

FM FRONT END

0V

5.2V

6

5

KDV147B

33K

Q302

2SC535 C

T304

FM IF

C311

10P(CH)

R304

47K

VD303

R303

C331

C332

0.047

68K

(UJ)

C334

27P

R307

FM BAND COVERAGE fL

C315

33

R315

7

47

FM OSC.

4.4V

L303

R305

680

R310

4.7K

0.022

100P

8

R306

C312

C313

3.8V

33

1

33P

6P (UJ)

C314

22P(CH)

C316

2

R308

10K

10.7MHz FM IF

CF303

3

VD302

10/16

5.2V

9

KDV147B

R313

0.022

C317

C321

0.0033

VD301

R312

2.2K

Q306

2SC535 C

680

SVC348S

R316

R314

FM MUTE

LEVEL

VR351

L3 1m

10K

5.6K

R336

R351

5.6K

2.1V

0.022

CF

F

C351

330

33

10.7

+B

R309

470

B

FM SIGNAL AM SIGNAL

C302

0.001

D301

CHASSIS

GND

C

D

AM LOOP ANTENNA

E

CNP301

AM

1

GND

2

FM

3

C301

F

FM ANTENNA

0.012

C349

0.001

BF301

D307

1N4148

BAND PASS

FILTER

D305

1N4148

D302

1N4148

321

C319

18P (CH)

0.01

0.001

C304

C359

0.8V

123 4

1N4148

C306

D306

0.0047

C307

C305

G

H

NOTES ON SCHEMATIC DIAGRAM can be found on page 6-1

1

23456

Figure 6-2 SCHEMATIC DIAGRAM (1/12)

6 – 2

MAIN PWB-A(1/3)

CD-MPS440W

FM MUTE

VR351

10K

+B

R309

470

LEVEL

R351

0.022

C351

L353 1mH

5.6K

2.1V

CF302

FM IF

10.7MHz

R358

1

2

8.2K

33P

C343

2.5V

24

OUT

AM OSC

IN

FM IF

2.1V

3

C344

33P

R382

330

R386

330

C381 12P (CH)

X352

C382

(CH)

15P

C384

0.001

PLL(TUNER)

0.022

3.3/50

C360

C362

5V

2.1V

23

IN

AM OSC

REG

AM MIX

OUT

213

5V

FM MPX./AM IF

10/16

C352

C378 330P

0.022

C397

TP301

VT

22

2.6V

X OUT

4.5MHz XIN

12 34

2.6V

IC302

LC72131

0.022

C361

C363

(2.7V)

2.1V

21

IN

AM RF

FM AFC

IC303

LA1832S

0.6V

22

FM IF DET./

CF352

AM IF

C350

0.022

T351

AM IF

C394

47/16

10K

C393

R381

1/50

20

21

VSS

AOUT

CEDICL

0V

0.1V

1K

R374

20

1

R380

1.5K

0.1V

1K

R373

10/16

C364

VSM

2

C392

AM IF

4

R352

0.001

19

0.9V

5

4.8V

1K

R372

0.022

C365

(0.9V)

0V

19

3

AIN

AM LOW

IN

5

1K

6

5.1V

1K

R371

0.001

C366

18

CUT

GND

10/16

C380

0.9V

18

DO

2.3V

OUT

FM/AM

SD

6

0.022

C353

R379

PD

7

1.7V

5V

+B

2.2K

R350

C367

C354

C387

5.2V

17

(11.4V)

TP302

2.7K

1

STEREO

7

5V

R353

CF351

0.022

(0V)

2.6V

16

15

VDD

FM IN

8

(0V)

3.7V

8

FM DET

0V

9

X351

AM IN

FMFMMUTE

3.9V

456kHz

(0V)

2.3V

17

MPX VCO

2.9V (4.3V)

270

FM IF

R393

1K

R377

5.6K

L351

100µH

C385

(2.6V)

14

MO/ST

10

3.5V

R360

VCC

9

0.022

C399

0.01

13

R359

(0V)

4.7K

+B

1.8K

R356

C368

2.1V

C398

12

11

R357

1K

1

16

MPX IN

10

0V0V5V

100/10

C355

R395

+B

C386

0V

IF IN

IF REQ

470K

C369

IF OUT

3.8V

22P

330P

C374

56P

1.3V

15

R-CH

11

(1.9V)

C356

C357

47K

0.022

1.3V

14

OUT

L-CH

PHASE

C358

1/50

2.2/50

0.001

C370

R365

C371

C372

C383

5.6K

R387

10K

1

OUT

C373

0.022

1/50

R361

12K

R362

12K

13

MO/ST

PHASE

12

R376

0.022

4.7K

R364

4.7V (0V)

4V

(AM/FM)

3.8V

3.3K

R355

10K

L352

100µH

100/10

+B

4.7K

R363

(2.2V)

(1.2V)

DZH05C2+

C396

R391

390

2HA1015 GR

11.7V

R383

5.6K

D308

1N4148

Q351 KRC104 M

R366

2.2K

ZD351

C395

0.022

R392 390

Q360

R385

5.6K

R384

6.8K

10.8V

10.9V

C391

47/16

1

SD

2

FM ST

DO

3 4

CL

CE

5

DI

6

+B

7

A_12V

D_GND

8

TUN_L

9

10

TUN_R

11

A_GND

MAIN SECTION

TO MAIN PWB (3/3)

6*6 2 - B

7

8 9 10 11 12

Figure 6-3 SCHEMATIC DIAGRAM (2/12)

6 – 3

CD-MPS440W

5

R

C814

[4] SCHEMATIC DIAGRAM MAIN(2/3)

TAPE MECHANISM ASS'Y(219) MAIN PWB-A(2/3)

A

TAPE 1

PLAYBACK HEAD (219-7)

R-CH

L-CH

B

C

D

TAPE MECHANISM PWB-H1,2 (219-11)

M801 (219-10)

TAPE

MOTOR

E

M

TAPE 2

RECORD/PLAYBACK HEAD (219-7)

R-CH

L-CH

ERASE HERD (219-6)

CN1

+

-

SW801 (219-8)

INITIALIZE

SW803 (219-9) REC

F

SOL801 (219-5)

SOLENOID

PHOTO INTERRUPTER

TAPE MECHANISM PWB-H1,2 (219-11)

G

TAPE 1

SOL802 (219-5)

SOLENOID

PHOTO INTERRUPTER

SW802 (219-8) INITIALIZE

CNW801

1

2

3

CNP801

1

2

3

4

5

6

7

CNW802

1

2

3

4

5

6

7

CNS804

1

2

3

4

5

6

7

CNS805

CNP802

1 2 3 4 5 6 7

CNW805

2HC1815 GR

C801

560P

CNW804

PLAYBACK SIGNAL

RECORD SIGNAL

TI_R

A_GND

T1_L

Q801

C802

560P

2HA1015 GR

R864

18K

R804

47K

R802

270

R865

33K

R807

47K

R803

270

C803 560P

C804 560P

R805 R809

47K 47K

R806 R810

4.7K

Q802

C805

0.022

C849

100/10

D801

D802

C806

3.3/50

R812

2.2K

R813

3.3K Q808

2HC1815 GR

R811

10K

R815

10K

R816

4.7K

R817

150

1N4148

Q804

2SB562-C

C807

3.3/50

1N4148

Q803

2HC1815 GR

R818

3.3K

R819

2.2K

Q810

KRC104 M

R820

56K

D807

1N4004

Q809

KRC107 M

Q805 2SB562-C

Q806

KRC107 M

Q807

R823

1.5K

R821

56K

10K

R824

2HC1815 GR

Q811 KRC104 M

1.5K

R822

Q814

R826

R827

10K

R825 10K

Q812

2HC1815 GR

Q813

2HC1815 GR

10K

R828

10K

C809

C810

C808

82P

100/25

R829

1K

R830

1K

C812

R832

R831

D803

330P

1K

1N4148

Q8

2SB

H

NOTES ON SCHEMATIC DIAGRAM can be found on page 6-1

1

23456

Figure 6-4 SCHEMATIC DIAGRAM (3/12)

6 – 4

CD-MPS440W

10K

2HC1815 GR

RNF

LNF

3.3/50

R848

RRO

RLO

R847

6.8K

C830

R849

ALC

0.022

R850

3.9K

C834 22/50

6.8K

3.9K

R851

47K

C832

REF

C835 22/50

C833

0.001

R852

1314151618 17192021222324

R853

0.001

1.5K

VCC

1.5K

100

R854

C836

0.022

IC801

AN7345K

C837

0.022

100

R855

C838

PLAYBACK and

C839

0.0033

RECORD/PLAYBACK AMP.

0.0033

R858

C840 47/25

C842

10K

R857

22/50

R859

C841

10K

C843

220

47/25

220/16

C844

0.022

+B

Q821 R862

KRC104 M

R860

4.7K

C845

0.0022

C846

0.027 (ML)

+B

R861

47K

Q822 2HA1015 GR

R866 120

R863 100K

C847

100/16

C850

330/16

TAPE R

TAPE L

REC R

REC L

VCC_12V

M_GND

A_GND

M_12V

U_CON5V

Q823

2SC2001 K

L801

330µH

13 12 15 14 16 17

18 19 20

6-7 7 - A

AMP. SECTION

TO MAIN PWB(3/3)

R829

1K

R830

1K

R828

10K

2HC1815 GR

330P

C812

1K

R832

R831

1K

330P

C814

82P

C809

2HC1815 GR

82P

C810

R833

10K

47

R836

33K

C827

R842

R840

R841

3.9K

R845

R843

R844

L:T1

33K

5.6K

H:T2

C826

5.6K

C825

47/25

RRI

RLI

47/25

C829

C828

0.0022

C823

C817

0.033

100/25

R838

C815

100K

330P

560P

C821

PRO

RNF

R(T2)

R(T1)

L(T1)

123456789101112

L(T2)

C816

C818

R837

LNF

330P

100/25

47

C822

R839

100K

PLO

560P

C824

0.033

R846

10K

Q819

D804

1N4148

Q818

2HC1815 GR

1N4148

C831

0.022

8 9 10 11 12

M

R835

1.5K

D803

1N4148

R834

Q815

2SB562-C

10K

D806

1N4148

C808

100/25

7

K

5

Q817 KRC102 M

KRC102 M

Q816 KRC102 M

7

D805

Q820

KRA102 M

R856 47K

REC

REC/PLAY

BIAS

T_MOTOR

CH_SW

T1_RUN_PLUS

T1_SOL T2_SOL

T2_RUN_PLUS

TAPE_SW

CNP803

10

9

FROM

8

DISPLAY PWB

7 6 5 4

CNS803

3 2 1

6-10 2 - C

Figure 6-5 SCHEMATIC DIAGRAM (4/12)

6 – 5