Sharp CD-MPX100E Bedienungsanleitung

CD-MPX100E

SERVICE MANUAL

• 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 Dramatic and Musical

Performers Protection Act 1956, the Performers Protection Acts

1963 and 1972 and to any subsequent statutory enactments and

orders.

SHARP CORPORATION

CONTENTS

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] Specifications.................................................1-1

[2] Names of parts...............................................1-2

CHAPTER 2. ADJUSTMENTS

[1] Mechanism section ........................................2-1

[2] Tuner section .................................................2-1

[3] TEST MODE..................................................2-2

[4] CD section......................................................2-3

CHAPTER 3. MECHANISM BLOCKS

[1] Caution on diassembly...................................3-1

[2] Removing and reinstalling the main parts........3-4

CHAPTER 4. DIAGRAMS

[1] Block diagrams............................................... 4-1

CHAPTER 5. CIRCUIT DESCRIPTION

[1] Notes on schematic diagram.......................... 5-1

[2] Types of transistor and LED........................... 5-1

[3] Waveforms of CD circuit ................................5-2

[4] Voltage...........................................................5-3

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS

LAYOUT

[1] Schematic diagram........................................6-1

[2] Wiring side of PWB......................................6-11

CHAPTER 7. FLOWCHART

[1] Troubleshooting.............................................7-1

CHAPTER 8. OTHERS

[1] Function table of IC .......................................8-1

[2] FL Display......................................................8-9

Parts Guide

DISPLAY

No. S3528CDMPX10H

In the interests of user-safety the set should be restored to its

original condition and only parts identical to those specified be

used.

MINI COMPONENT SYSTEM

CD-MPX100E

MODEL

CD-MPX100E Mini Component System consisting of

CD-MPX100E (main unit) and CP-MPX100H (speaker

system).

CD-MPX100E

– i –

[1] 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 Require-

ments. 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 sev-

eral 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.

[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 cus-

tomer to use.

Setting of Withstanding Voltage Tester and set.

Laser Diode Properties

Material: GaAIAs

Wavelength: 780 nm

Emission Duration: continuous

Laser Output: max. 0.6 mW

Set name set value

Withstanding Voltage Tester

Test voltage 4 kV DC

Set time 3 secs

Set current (Cutoff current) 3 mA

Unit

Judgment

OK: The "GOOD" lamp lights.

NG: The "NG" lamp lights and the buzzer sounds.

PROBE

OUT

UNIT

SHORT-CIRCUIT

AC POWER

SUPPLY CORD

CONNECT THE PROBE

TO GND OF CHASSIS

SCREW

WITHSTANDING

VOLTAGE TESTER

CD-MPX100E

PRECAUTIONS FOR USING LEAD-FREE SOLDER

1. Employing lead-free solder

“All PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs 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 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 92LPWB6295MANS Main/Display/Headphones

PWB-B 92LPWB6295PWRS Power/Transformer

PWB-C 92LPWB6243CDUS CD MP3

– ii –

CD-MPX100E

1 – 1

AudioCD-MPX100EService ManualCD-MPX100EMarketE

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

General

Amplifier

CD player

Tuner

Cassette deck

Power source AC 230 - 240 V, 50 Hz

Power consumption

50 W

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

Height: 305 mm (12")

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

Weight 6.1 kg (13.42 lbs.)

Output power MPO: 78 W (39W+39W)(10%T.H.D.)

RMS: 40 W (20W+20W)(10%T.H.D.)

RMS: 34 W (17W+17W)(0.9%T.H.D.)

Output terminals Speaker: 6 ohms

Headphones: 16 - 50 ohms

(recommended: 32 ohms)

Input terminals Video/Auxiliary (audio signal):

500 mV/47 k ohms

Type 3-disc multi-play compact disc player

Signal readout Non-contact, 3-beam semiconductor laser

pickup

D/A converter 1-bit D/A converter

Frequency response 20 - 20,000 Hz

Dynamic range 90 dB (1 kHz)

Frequency range FM: 87.5 - 108.0 MHz

AM: 522 - 1,620 kHz

Frequency response 50 - 14,000 Hz (normal tape)

Signal/noise ratio 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/playback)

Wow and flutter 0.3 % (WRMS)

Type 2-way type speaker system

12 cm (4-3/4") Woofer with Piezo

Maximum input

power

40 W

Rated input power 20 W

Impedance 6 ohms

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

Height: 305 mm (12")

Depth: 185 mm (7-1/4")

Weight 2.4 kg (5.3 lbs.)/each

CD-MPX100E

CP-MPX100H

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER

TO THE OPERATION MANUAL.

Specifications for this model are subject to change without

prior notice.

CD-MPX100E

1 – 2

[2] Names of parts

Front panel

1. Disc Tray

2. Timer Set Indicator

3. Memory/Set Button

4. On/Stand-by Button

5. Display Button

6. Clock/Timer Button

7. Tuning Up Button

8. Tuning Down Button

9. Headphone Socket

10. Tape 2 Record Pause Button

11. Tape 1 Cassette Compartment

12. Equalizer Mode Select Button

13. Extra Bass/Demo Mode Button

14. Volume Up and Down Buttons

15. Disc Skip Button

16. Disc Tray Open/Close Button

17. Tape 2 Cassette Compartment

18. CD 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, Time 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, Time Up Button

MINI COMPONENT SYSTEM CD-MPX100W

DISPLAY

CD-MPX100E

Display

1. Disc Number Indicators

2. CD Play Indicator

3. CD Pause Indicator

4. Memory Indicator

5. CD Repeat Play Indicator

6. WMA Indicator

7. CD Indicator

8. MP3 Indicator

9. Extra Bass Indicator

10. Tape Play Indicator

11. FM Stereo Mode Indicator

12. Daily Timer Indicator

13. FM Stereo Receiving Indicator

14. Tape 2 Record Indicator

15. Sleep Indicator

16. Timer Play Indicator

17. Timer Recording Indicator

Rear panel

1. AC Power Lead

2. FM/AM Loop Aerial Socket

3. Video/Auxiliary (Audio Signal) Input Sockets

4. Speaker Terminals

CD-MPX100E

1 – 3

Remote control

1. Remote Control Transmitter

2. Disc Number Select Buttons

3. MP3/WMA Display Button

4. Disc Clear/Dimmer Button

5. Memory Button

6. Disc Random Button

7. Tape 2 Record Pause Button

8. Disc Track Down or Fast Reverse, Tape 2 Rewind,

Tuner Preset Down, Time Down Button

9. Equalizer Mode Select Butto

10. Tuner (Band) Button

11. CD Button

12. On/Stand-by Button

13. Extra Bass Button

14. Clock/Timer Button

15. Disc Direct Search Buttons

16. Disc Pause Button

17. Disc Track Up or Fast Foward, Tape 2 Fast Forward,

Tuner Preset Up, Time Up Button

18. Disc/Tape Stop Button

19. Disc Play or Repeat/Tape Play Button

20. Video/Auxiliary Button

21. Tape (1 2) Button

22. Volume Up Button

23. Volume Down Button

CD-MPX100E

CP-MPX100H

1. Piezo

2. Woofer

3. Bass Reflex Duct

4. Speaker Wire

CD-MPX100E

2 – 1

AudioCD-MPX100EService ManualCD-MPX100EMarketE

CHAPTER 2. ADJUSTMENTS

[1] Mechanism section

• Driving Force Check

• Torque Check

• Tape Speed

[2] Tuner section

fL: Low-range frequency

fH: High-range frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

•FMRF

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

•FMIF

Signal generator: 10.7 MHz, FM modulated

Torque Meter Specified Value

Play: TW-2111 Tape 1: Over 80 g

Tape 2: Over 80 g

Torque Meter Specified Value

Tape 1 Tape 2

Play: TW-2111 30 to 80 g.cm 30 to 80 g.cm

Fast forward: TW-2231 — 70 to 180 g.cm

— 70 to 180 g.cm

Test Tape Adjust-

ing Point Specified

Value Instrument

Connection

Normal

speed MTT-111 Variable

Resistorin

motor.

3,000 ±30 Hz

Speaker Speaker Ter-

minal (Load

resistance: 6

ohms)

Figure 1

Test Stage Frequency Frequency

Display Setting/

Adjusting

Parts

Instrument

Connection

AM IF 450 kHz 1,620 kHz T351 *1

AM Band

Coverage — 522 kHz (fL): T306

1.1 ±0.1 V *2

Tracking 990 kHz 990 kHz (fL): T303 *1

*1. Input: Antenna Output: TP302

*2. Input: Antenna Output: TP301

TAPE MECHANISM

Tape

Motor

Variable Resistor in motor

Test

Stage Frequency Frequency

Display Setting/

Adjusting

Point

Instrument

Connection

FM Band

Coverage — 87.50 MHz T301 (fL):

1.3 V ±0.1 V *1

FM RF 98.00 MHz

(10-30 dB) 98.00 MHz L312 *2

*1. Input: Antenna Output: TP301

*2. Input: Antenna Output: Speaker terminal

Test

Stage Frequency Frequency

Display Setting/Adjust-

ing Point Instrument

Connection

IF 10.7 MHz 98 MHz T302 (Turn the

core of trans-

former T302

fully counter

clockwise)

Figure 2 Adjustment Points

AM IF

FM RF

TP301

TP302

FM IF

T301

T302

R356

R381

T303

T306

IC301

L312

T351

CNP301

AM/FM LOOP ANTENNA

FM BAND

COVERAGE fL

AM BAND

COVERAGE fL

AM TRACKING

MAIN PWB

CD-MPX100E

2 – 2

[3] TEST MODE

•Setting the test mode

Any one of test mode can be set by pressing several key as follows.

<X-BASS> + <CD> + <ON/STAND-BY> TEST: CD operation test.

Function: -CD test mode.

-Enter test mode.

CD TEST

OPEN/CLOSE operation is using manual.

<< >>, << >> buttons make pick's slide possible.

Do TOC IL. Do normal play.

When these following key is input

into PLAY key, track number can

be appoint directly.

<<PLAY>> key input. <<MEMORY>> key input.

<< 1 >> key: Track 4

<< 2>> key: Track 9

<< 3>> key: Track 15

<<STOP>> key input.

STOP

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that

specific point.

<<MEMORY>> key input.

Tracking ON play from

that specific point.

<<STOP>> key input.

STOP

IL isn't done

VOL Ñ Last memory

BAL Ñ CENTER

P.GEQ Ñ FLAT

X-BASS Ñ OFF

To cancel : Power OFF

Sliding the PICKUP with

<< >>, << >> button

must only be in STOP mode.

<<MEMORY>>

key input.

Adjustment result

automatically will

display as below.

for each 2 sec :

a) "FOFF_XX"

b) "TOFF_XX"

c) "TBAL_XX"

d) "TGAN_XX"

f) "FGAN_XX"

g) "RFLS_XX"

explanation:

a) Focus off set = "FOFF_XX"

b) Tracking off set = "TOFF_XX"

c) Tracking balance = "TBAL_XX"

d) Tracking Gain = "TGAN_XX"

f) Focus Gain = "FGAN_XX"

g) RF level shift = "RFLS_XX"

Adjustment result automatically will

display as below for each 2 sec :

a) "FOFF_XX"

b) "TOFF_XX"

c) "TBAL_XX"

d) "TGAN_XX"

f) "FGAN_XX"

g) "RFLS_XX"

<<MEMORY>> key input.

CD-MPX100E

2 – 3

[4] CD section

•Adjustment

Since this CD system incorporates the following automatic adjust-

ment functions, readjustment is not needed when replacing the

pickup. Therefore, different PWBs and pickups can be combined

freely.

Each time a disc is changed, these adjustments are performed

automatically. Therefore, playback of each disc can be performed

under optimum conditions.

Items adjusted automatically

1) Offset adjustment (The offset voltage between the head amplifier

output and the VREF reference voltage is compensated inside the

IC.)

* Focus offset adjustment

* Tracking offset adjustment

CD Error code description

* 'CHECKING'

If Error is detected, 'CHECKING' will be displayed instead of 'ER-

CD**' display. 'ER-CD**' display will only be displayed when error

had been detected for the 5 th times.

Standard Specification of Stereo System Error Message Display Contents

(*) CHECKING:

If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**' display.

'ER-CD**' will only be display when CD changer mechanism error had been detected for the 5 th times.

Error Explanation

01 When Pickup set inner position, inner switch cannot detect

‘ON’ level for 10 secs.

10*

When tray moves to Open/Close, Open/Close switch can-

not detect ‘ON’ level for 7 secs.

When disc table rotate to target position.

Clamp switch cannot detect ‘ON’ level for 7 secs.

11* When disc table set to Disc1 position for 1 st time.

“CLAMP SW”, “DISC NO SW” and “OPEN/CLOSE” cannot

detect ‘ON’ level for 14 secs.

31 When it change to CD function, DSP cannot read initial

data.

Error Contents Display Notes

CD Pickup Mechanism Error. 'ER-CD**' 01: PU-IN SW Detection NG.

CD Changer Mechanism Error. 'ER-CD**' (*) 10: Changer Error.

11: Initial Error.

CD DSP Communication Error. 'ER-CD**' 31: DSP COMMUNICATION ERROR.

Focus Not Match. 'NO DISC'

TUNER PLL Unlock. PLL Unlock.

FM 87.5 MHz

CD-MPX100E

2 – 4

Speaker abnormal detection and +B PROTECTION display

In case speaker abnormal detection or +B PROTECTION had

occurred, it can be check by pressing 'POWER' and 'X-BASS' button

twice.

Display will show “S** B**”. S is referring to speaker abnormal detec-

tion and B is referring to +B PROTECTION. ** is in hex valve.

+B PROTECTION is condition when irregular process occur on power

supply line.

BEFORE TRANSPORYING THE UNIT

The following process need to be taken after set tapering/parts

replacement.

1. Press the ON/STAND-BY button to enter stand-by mode.

2. While pressing down the button and the X-BASS/DEMO button,

press the ON/STAND-BY button until “CLEAR AL” appears.

3. While pressing down the button and the X-BASS/DEMO

button, press the ON/STAND-BY button until “WAIT” →“FIN-

ISHED” appears.

4. Unplug the AC cord and the unit is ready for transporting.

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