Sharp CDMPX870W Service Manual

CD-MPX870W

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

l condition and only parts identical to those specified be

used

SERVICE MANUAL

No. S6622CDMP870W

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

Voltage selection............................................1-2

[3]

AC power supply cord AC plug adaptor.........1-2

[4]

Specifications.................................................1-3

[5]

Names of parts...............................................1-4

[6]

CHAPTER 2. ADJUSTMENTS

Mechanism section ....................................... 2-1

[1]

Test mode ..................................................... 2-2

[2]

CD section ..................................................... 2-4

[3]

CD Changer mechanism section ................... 2-5

[4]

MODEL

CD-MPX870W Mini Component System consisting of

-MPX870W (main unit) and CP-MPX870 (speaker

CD system

APTER 5. CIRCUIT DESCRIPTION

Waveforms of CD circuit............................... 5-1

[1]

Voltage ......................................................... 5-2

[2]

APTER 6. CIRCUIT SCHEMATICS AND PARTS

CH LAYOUT

Notes on schematic diagram........................ 6-1

[1]

Types of transistor and LED.......................... 6-1

[2]

Schematic diagram........................................ 6-2

[3]

Wiring side of PWB ......................................6-10

[4]

APTER 7. FLOWCHART

Troubleshooting............................................ 7-1

[1]

CD-MPX870W

CHAPTER 3. MECHANISM BLOCKS

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

Removing and reinstalling the main parts ...... 3-4

[2]

CHAPTER 4. DIAGRAMS

CD Block diagrams ....................................... 4-1

[1]

Main Block diagrams .................................... 4-2

[2]

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.

APTER 8. OTHERS

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

[1]

FL Display .................................................... 8-8

[2]

rts Guide

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

CD-MPX870W

CHAPTER 1: GENERAL DESCRIPTION

[1] PRECAUTIONS FOR USING LEAD-FREE SOLDER

1. Employing lead-free solder

"MAIN, POWER, DISPLAY, GAME INPUT, CD SERVO, LED, CD MOTOR (PWB ONLY), CD CHANGER MOTOR (PWB ONLY) PWB" of this model employs lead-free solder.The LF symbol indicates lead-free solder, and is attached on lead-free solder

Example:

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, were commend you to use a dedicated soldring 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 servicin

the PWB and service manuals.The alphabetical character following LF shows the type of

Indicates lead-free solder of tin,silver and copper.

Ref No.

PWB-A 92LPWB6570MANS

PWB-B 92LPWB6570DPLS

PWB-

Parts No.

92LPWB6514CDU

92LPWB6274LED

QPWBF0027AWZZPWB-E

QPWBF1055AWZZPWB-F

MAIN (A1), POWER (A2)

DISPLAY (B1), GAME INPUT (B2)

CD SERV

CD MOTOR (PWB ONLY)

CD CHANGER MOTOR (PWB ONLY)

Description

1 – 1

– i –

[2]

SAFETY PRECAUTION FOR SERVICE MANUAL

Precaution to be taken when replacing and servicing the Laser Pickup.

Laser Diode Properties Material: GaAIAs Wavelength: 795 nm Emission Duration: continuous Laser Output: max. 0.6 mW

Note for users in Australia:

may exist in material you wish to record. Copying or broadcasting such material without pe

rmission of the relevant in licenses or owners of the copyright is prohibited by law. SHARP is not in a position to authorise the copying or broadcasting of copyright

materials and nothing in this OPERATION

MANUAL should be implied as giving that authority.

CD-MPX870W

For other countries:

Audio-visual which owner in your country

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).

material may consist of copyrighted works must not be recorded without the authority of the of the copyright. Please refer to the relevant laws

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCEA001AW00

QPLGA0004AWZZ

QACCZ0013AW00

QACCL0008AW00

–2

1 – 2

CD-MPX870W

[5]

SPECIFICATIONS

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

As part of our policy of continuous improvement, SHAR P specifcation without figures uni t s

rese r v es the r ight t o make d e s ign an d

changes for product improv e m e n t prior notice. The performance specifcation indicated are nominal values of production

.There m a y b e some deviations f r om these

values in individual units.

General

Power source

Power consumption

Dimensions Width: 10 - 1/4" (260 mm)

Weight

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

120 W

Height: 13" (330 mm) Depth: 12 - 7/8" (323 mm)

18.74 lbs. (8.5 kg)

Amplifier

Output power

Output terminals Speakers: 6 ohms

Input terminals Game/ Auxiliary (audio signal):

600 W (300 W + 300 W) (10% T.H.D.)

MPO: RMS:

300 W (150 W + 150 W) (10% T.H.D.)

RMS:

240 W (120 W + 120 W) (0.9% T.H.D.)

Headphones: 16 - 50 ohms (recommended: 32 ohms) Video output: 1Vp-p

500 mV/ 47 k ohms Game/Video: 1Vp-p

Tuner

Frequency range

FM: 88.0 - 108.0 MHz AM: 531 - 1602 kHz

Cassette deck

Frequency response

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

Wow and flutter 0.3 % (WRMS)

50 - 14,000 Hz (normal tape)

50 dB (TAPE 2, recording/playback)

Front Speaker

Type 3-way type speaker system

Super tweeter 2" (5 cm) tweeter

6 - 5/16" (16 cm) woofer

Maximum input power

Rated input power 150 W

Impedance 6 ohms

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

Weight 7.3 lbs. (3.3 kg) /each

300 W

Height: 13" (330 mm) Depth: 9 - 1/8" (231 mm)

CD player

Type 5-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

1 – 3

– 4

[6]

NAMES OF PARTS

1 2 3 4 5 6 7 8 9

16 17

11 1213

Front panel

1. Disc Trays

2. Timer Indicator

3. Tuner (Band) Button

4. CD Button

5. ON/STAND-BY Button

6. Tape (1 2) Button

7. Game/Video Button

8. Tape 1 Cassette Compartment

9. Headphone Jack . Game/ Video Input Jac

11. Disc Tray Open/Close Button . Disc Number Select Buttons

13. Volume Control . CD or Tape Stop Button

. CD Play or Repeat,

15 16

. CD Track Up or Fast Forward, Tape 2 Fast Forward,

Tuner Preset Up, Time Up Button

. CD Track Down or F

Tuner Preset Down,

. Tape 2 Cassette Compartment . Remote Sensor

Tape Play Button

ast

Reverse, Tape 2 Rewind,

Time Down Button

Display

1. Disc Number Indicators

2. MP3/ WMA Folder Indicator

3. MP3/ WMA Title Indicators

4. MP3 Indicator

5. WMA Indicator

6. Sleep Indicator

7. Timer Play Indicator

8. Timer Recording Indicator

9. Tape 2 Record Indicator

10. MP3/WMA Total Indicator

. Daily Timer Indicator

. FM Stereo Mode Indicator

. FM Stereo Receiving Indicator

. Tape Play Indicator

15. Memory Indicator

. Extra Bass Indicator

. Disc Repeat Play Indicator

. Disc Pause Indicator . Disc Play Indicator

CD-MPX870W

4 5

8 9

Rear panel

1. Cooling Fan

2. AC Voltage Selector

3. AC Power Cord

4. FM 75 Ohms Antenna Jack

5. AM Antenna Ground Terminal

6. AM Loop Antenna Terminal

7. Speaker Light-up Jacks

8. Span Selector Switch

9. Video out Jack

10. Front Speaker Terminals

Front Speaker

Tweeter

2.1.Super Tweeter

3. Woofer

4. Bass Reflex Duct

5. Speaker Wire

6. Speaker Light-Up Wire

1 – 4

–2

CD-MPX870W

Remote control

1. Remote Control Transmitter

26 27 28 29

2. Disc Number Select Buttons

3. Clock/Timer Button

4. Character Input/Disc Direct Search Buttons

5. Equalizer Mode Select Button

6. Extra Bass/Demo Button

7. ON/STAND-BY Button

8. CD Button

9. Tuner (Band) Button

10. Tape (1 2) Button

11. Game/Video Button

12. Volume Up and Down Buttons

13. Disc Clear/Dimmer Button

14. Disc Random Button

15. Disc Stop Button

16. Tape Stop Button

17. Memory Button

18. Disc Pause Button

19. Disc Play or Repeat Button

20. Tape Play Button

21. Tape 2 Record Pause Button

22. Tuning Up, Cursor Up Button

23. Disc Track Up or Fast Forward, Tape 2 Fast Forward, Tuner Preset Up, Time Up, Cursor Right Button

24. Disc Track Down or Fast Reverse, Tape 2 Rewind, Tuner Preset Down, Time Down, Cursor Left Button

25. Tuning Down, Cursor Down Button

26. MP3/WMA Navigation Mode Select Button

27. Character Button

28. MP3/WMA Display Button

29. Enter Button

1 – 5

– 4

CD-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE

CHAPTER 2. ADJUSTMENTS

[1] Mechanism section

• Driving Force Check

Torque Meter Specified Value

Play: TW-2111 Tape 1: Over 80 g

• Torque Check

Torque Meter Specified Value

Play: TW-2111 30 to 80 g.cm 30 to 80 g.cm Fast forward: TW-2231 — 70 to 180 g.cm

• Tape Speed

Tape 2: Over 80 g

Tape 1 Tape 2

— 70 to 180 g.cm

CD-MPX870W

Test Tape Adjust-

Normal speed

MTT-111 Variable

Tape Motor

Figure 1

ing Point

Resistor in motor.

TAPE MECHANISM

Variable Resistor in motor

Specified

Value

3,000 ± 30 Hz Speaker

Instrument

Connection

Speaker Terminal (Load resistance: 6 ohms)

2 – 1

CD-MPX870W

[2] Test mode

• Setting the test mode

During stand-by mode, press GAME/VIDEO button while pressing down the button and button.

then, press the CD button to enter the test mode.

C D T E S T

OPEN/CLOSE operation is using manual. IL isn’t done

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

to page 2-3

<<PLAY>> key input.

Do TOC IL. Do normal play. When these following key is input into PLAY key, track number can be appoint directly.

<< 1>> key: Track 4 << 2>> key: Track 9

<< 3>> key: Track 15

IL isn’t done

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec: a) "FOF_XXXX" b) "TOF_XXXX" c) "TBAL_XX" d) "TGAN_XX" f) "FGAN_XX" g) "RFLS_XX"

<<STOP>> key input.

STOP

explanation: a) Focus off set = "FOF_XXXX" b)Tracking off set = "TOF_XXXX" c)Tracking balance = "TBAL_XX" d)Tracking Gain = "TGAN_XX" f) Focus Gain = "FGAN_XX" g) RF level shift = "RFLS_XX" VOL — Last memory P.GEQ — FLAT X-BASS — OFF To cancel : Power OFF

––––––––

2 – 2

<<MEMORY>> key input.

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that specific point.

<<MEMORY>> key input.

Tracking ON play from that specific point.

CD-MPX870W

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec : a) "FOF_XXXX" b) "TOF_XXXX" c) "TBAL_XX" d) "TGAN_XX" f) "FGAN_XX" g) "RFLS_XX"

<<STOP>> key input.

STOP

Sliding the PICKUP with<< >>, << >> button must only be in STOP mode.

2 – 3

CD-MPX870W

[3] CD section CD Error code description

Error Explanation

10* CAM error. Can't detect CAM switch when CAM is moving. 11* When it detect cam operation error during initialize

process.

20* TRAY error. Can't detect TRAY switch when TRAY is

moving.

21* When it detect TRAY operation error during initialize

process.

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

data.

* 'CHECKING'

If Error is detected, 'CHECKING' will be displayed instead of 'ER-CD**'. 'ER-CD**' display will only be displayed when error had been detected for the 5

Standard Specification of Stereo System Error Message Display Contents

Error Contents Display Notes

CD CD Changer Mechanism Error. 'ER-CD**' (*) 10: CAM SW Detection NG during normal operation.

CD DSP Communication Error. 'ER-CD31' DSP COMMUNICATION ERROR. Focus Not Match/IL Time Over. 'NO DISC'

TUNER PLL Unlock. PLL Unlock.

times.

FM 87.5 MHz

11: CAM SW Detection NG during initialize process. 20:TRAY SW Detection NG during normal operation. 21:TRAY SW Detection NG during initialize process.

(*) CHECKING:

If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**'. 'ER-CD**' display will only be display when error had been detected for the 5

times.

Speaker abnormal detection and +B PROTECTION display

In case speaker abnormal detection or +B PROTECTION had occurred, the unit will automatically enter to stand - by mode and Timer indicator will be flashing as below.

Example : In case of speaker abnormal

TIMER LED

OFF

NO. 1

NO.1 : +B Protection NO.2 : Speaker abnormal

OFF

FLASHING

NO. 2

1 FRAME

OFF

NO. 1

FLASHING

OFF

NO. 2

(REPEAT)

+B PROTECTION is condition when irregular process occur on power supply line. BEFORE TRANSPORTING 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 button, press the GAME/VIDEO button. The Micro Computer version number will be displayed as "CM*****".

3. Press button until "WAIT"→ "FINISHED" appears.

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

2 – 4

[4] CD Changer mechanism section

• All numbers in the drawing correspond to those in parts guide (CHANGER MECHANISM PARTS).

141

CD-MPX870W

140

HALF GEAR MUST BE ARRANGED AS SHOWN

2 – 5

CD-MPX870W

139

APPLY SANKOL SHS1001 BEFORE FIX

FIX ITEM 139 ACCORDING TO THE PICTURE AS SHOWN ABOVE

ROTATE MODE BIG GEAR UNTIL REACH AS SHOWN IN PICTURE

2 – 6

CD-MPX870W

143

APPLY GREASE SC141

112

PULL THE LEVER UNITIL REACH THE ARROW MARK

2 – 7

CD-MPX870W

FIGURE 2

FIGURE 1

152

142

APPLY GREASE SC141

118

SLOT CLAMP SWITCH ARM INSIDE BASE SLOT

HALF GEAR MUST BE ARRANGED AS SHOWN

2 – 8

CD-MPX870W

APPLY GREASE SC141 AT BOTTOM SIDE OF GEAR FOLLOW MARKING (REFER TO GRAY AREA)

NO NEED TO APPLY GREASE AT BOTTOM SIDE

FIGURE 1

APPLY GREASE SC141 AT TOP SIDE OF GEAR FOLLOW MARKING (REFER TO GRAY AREA)

127

IF DIRECTION IS OTHER THAN DIRECTION SHOWN IN FIGURE 1, IT IS INCORRECT

CORRECT

128

INCORRECT

BLACK MARK

2 – 9

CD-MPX870W

APPLY GREASE SC141 AT HALF GEAR AREA

ROTATE CLOCKWISE UNTIL REACH HERE (MAXIMUM)

129

2 – 10

CD-MPX870W

151150149

2 – 11

CD-MPX870W

THE SHOWN AREA MUST FREE FROM GREASE

CORRECT

GREASE SC141 APPLICATION LENGTH

GREASE APPLICATION PORTION

INCORRECT

SHOWN HOLE MUST FACING ARROW DIRECTION

124

131

2 – 12

138 126 125

CD-MPX870W

APPLY GREASE SC141 AT BOTTOM SIDE ONLY

TR-RE JOINT GEAR C

APPLY GREASE SC141 ONLY AT TOP SIDE GEAR

MUST BE FIXED ACCORDINGLY TO THE HOLE'S

2 – 13

CD-MPX870W

148 147 146 145

2 – 14

CD-MPX870W

121

144

WHEN FIXING ITEM 144 MUST FOLLOW AS SHOWN

APPLY GREASE SC141

130

2 – 15

CD-MPX870W

117

FIGURE 2

FIGURE 1

APPLY GREASE SC141

FIGURE 3

APPLY GREASE SC141

2 – 16

CD-MPX870W

ITEM 133 , 134 MUST APPLY GREASE SC141 ON TOP SIDE GEAR ONLY

134

GEAR 112 GEAR 112

133

132

CORRECT

TOP VIEW AFTER BEING ASSEMBLED

INCORRECT

IT IS INCORRECT TO FIX IT IN REVERSED DIRECTION

2 – 17

CD-MPX870W

APPLY GREASE SC141 BEFORE FIX

MOVE 112 UNTIL TOUCH THE WALL

DURING GEAR A ROTATE MUST PRESS SHOWN AREA AND LEVER B WILL MOVE ARROW DIRECTION THEN FIX PART 108

SCREW TORQUE

+0.5

2 kgf-cm

- 0

108 803 x6

APPLY GREASE SC141

CONFIRM WHETHER FIXED PROPELY OR NOT

2 – 18

CD-MPX870W

APPLY GREASE SC141

113

BEHIND THE LEVER NEED TO APPLY GREASE SC141

PULL IT THEN LEVER WILL MOVE IN

2 – 19

CD-MPX870W

123

115

APPLY GREASE SC141

APPLY GREASE SC141 BEFORE FIX

APPLY GREASE SC141 AT BOSS

SPRING MUST BE ARRANGED UNDER THE HOOK

CORRECT LR JOINT LEV

BOARD R

LR JOINT LEV

INCORRECT

2 – 20

CD-MPX870W

IT IS INCORRECT IF ASSEMBLED IN A REVERSED DIRECTION

103 137 136

APPLY GREASE SC141

BIG SLOT MUST FACING OUT WHEN FIX AND AFTER FIXED TO BASE CHASSIS. AFTER ASSEMBLY, CONFIRM WITH FREE DROP TEST

GEAR POSITION DURING FIXING

2 – 21

CD-MPX870W

IT IS INCORRECT IF ASSEMBLED IN A REVERSED DIRECTION

APPLY GREASE SC141

104

135

136

BIG SLOT MUST FACING OUT

WHEN FIX AND AFTER FIXED TO BASE CHASSIS AFTER ASSEMBLY, CONFIRM WITH FREE DROP TEST

GEAR POSITION DURING FIXING

CONFIRM BOTH GEARS SIT PROPERLY AND LOCKED

2 – 22

120

CD-MPX870W

AFTER FIX OUTER UP/DOWN LEVER HOLD AS SHOWN PORTION AND MOVE UP/DOWN THEN CONFIRM WHETHER LEVER GO INSIDE THE HOLE OR NOT

137

IT IS CORRECT IF THE LEVER HOLD

BIGGER SLOT FACING OUT

ENTERS THE HOLE

119

IT IS INCORRECT IF THE LEVER HOLD DOES NOT ENTER THE HOLE

135

BIGGER SLOT FACING OUT

ALL OF THIS 135 AND 137 GEAR FIX TOGETHER WITH 119

AND 120 LEVER ( MOVE TOGETHER )

2 – 23

CD-MPX870W

BIG SLOT FACING OUT

110

2 – 24

+ 84 hidden pages

Sharp CDMPX870W Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual