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Ver 1.1  2000.01

MICROFILM

MZ-E75

SERVICE MANUAL

PORTABLE MINIDISC PLAYER

SPECIFICATIONS

US Model

AEP Model

UK Model

Australian Model

E Model

Tourist Model

Model Name Using Similar Mechanism

NEW

MD Mechanism Type

MT-MZE75-167

Optical Pick-up Mechanism Type

ODX-1B

US and foreign patents licensed from Dolby
Laboratories Licensing Corporation

System

Audio playing system

Minidisc digital audio system

Laser diode properties

Material : GaAlAs
Wavelength : 

λ

 =790nm

Emission duration : continuous

Laser output : less than 44.6 

µ

W*

* This output is the value measured at a distance of 200 mm from the

objective lens surface on the optical pick-up block with 7mm aperture.

Revolutions

400 rpm to 900 rpm (CLV)

Error correction

Advanced Cross Interleave Reed Solomon Code (ACIRC)

Sampling frequency

44.1kHz

Coding

Adaptive Transform Acoustic Coding (ATRAC)

Modulation system

EFM (Eight to Fourteen Modulation)

Number of channels

2 stereo channels
1 monaural channel

Frequency response

20 to 20,000 Hz ± 3 dB

Wow and Flutter

Below measurable limit

Outputs

Headphones : stereo mini-jack, maximum output level 5mW+5mW,
load impedance 16 ohm

General

Power requirements

Nickel metal hydride rechargeable battery NH-14WM (supplied)
One LR6 (size AA) alkaline battery (not supplied)
Sony AC Power Adaptor (not supplied) connected at the DC IN

1.5V jack

Battery operation time

Batteries

Playback

Ni-MH

Approx.

Rechargeable battery (NH-14WM)

16 hours

One LR6 (size AA)

Approx.

Sony alkaline batteries

22 hours

One LR6 (size AA) and a

Approx.

Ni-MH (NH-14WM)

42 hours

Ni-CD

Approx.

Rechageable battery (NC-6WM)

8 hours

One LR6 (size AA) and a

Approx.

Ni-CD (NC-6WM)

32 hours

Dimensions

Approx. 86 x 16.3 x 75.4 mm (w/h/d)
not including projecting parts and controls

Mass

Approx. 98 g the player only
Approx. 141 g incl. a premastered MD and a nickel
metal hydride rechargeable battery NH-14WM (N)

Supplied accessories

Battery charger (1)
Rechargeable battery (1)
Rechargeable battery carrying case (1)
Headphones with a remote control (1)
Dry battery case (1)
Carrying pouch (1)
AC plug adaptor (E, Tourist model) (1)

Design and specifications are subject to change without notice.

Summary of Contents for MD Walkman MZ-E75

Page 1: ...quency response 20 to 20 000 Hz 3 dB Wow and Flutter Below measurable limit Outputs Headphones stereo mini jack maximum output level 5mW 5mW load impedance 16 ohm General Power requirements Nickel metal hydride rechargeable battery NH 14WM supplied One LR6 size AA alkaline battery not supplied Sony AC Power Adaptor not supplied connected at the DC IN 1 5V jack Battery operation time Batteries Play...

Page 2: ... dam aged by heat TABLE OF CONTENTS CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure IN NO EVENT SHALL SELLER BE LIABLE FOR ANY DIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY NATURE OR LOSSES OR EXPENSES RESULTING FROM ANY DEFECTIVE PRODUCT OR THE USE OF ANY PRODUCT MD WALKMAN is a trademark of Sony ...

Page 3: ...tor 4 B button 5 button 6 x button 7 i 2 jack 1 Headphones 2 x button 3 B button 4 VOL button 5 DISPLAY button 8 VOLUME button 9 VOLUME button q External battery terminal qa DIGITAL SOUND PRESET switch qs AVLS switch qd HOLD switch 2 7 3 1 6 4 q qa qs qd 9 5 8 4 5 6 9 8 3 2 1 7 6 PLAYMODE button 7 DISPLAY window 8 X button 9 HOLD switch ...

Page 4: ...NAMENTAL r The equipment can be removed using the following procedure Optical pick up block ASSY set Upper panel ASSY Panel ASSY bottom Belt Ornamental Main board 1 Screws 1 4 3 Screw 1 7 Upper panel ASSY 6 Screws 1 4 5 7 Claw 4 Claw 2 Press the OPEN button Main unit Panel ASSY bottom Main unit Belt ornamental 2 1 Move it away from projection ...

Page 5: ...P step Main board Main unit 5 OP flexble board 3 CLV fexble board 4 3 Screw M1 4 precision pan Shaft Main Chissis ASSY OP flexible board Optical pick up block ASSY OP flexible board Double sided adhesive tape 2 1 5 6 4 Note Put the OP flexible board to a correct position of chassis ASSY ...

Page 6: ...e above ROM version display tAll lit t All off is repeated The ROM version is constantly displayed When the PLAY MODE key is pressed and hold down the dis play at that time is held so that display can be checked Configuration of Test Mode The test mode has the configuration given below Servo Mode Set the test mode press the VOLUME key and use the B key to set the servo mode When the servo mode is ...

Page 7: ...acking gain 046 Lower reflection CD focus bias 047 050 CD adjustment Mode Description 051 CD EF balance 052 CD tracking offset 053 CD ABCD gain 054 CD focus gain 055 CD tracking gain 056 CD focus bias 057 058 059 05a 05b 05c See page 6 x key x key x key x key VOL keys MO adjustment 0 3 0 031 to 039 03a to 03c 1 B key x key x key VOL keys CD adjustment 0 5 0 051 to 059 05a to 05c 1 B key x key x ke...

Page 8: ...put x key x key B key B key B key x key B key x key B key x key B key x key B key Power Mode Enter the test mode and press the VOL key Then press the B key and the VOLUME key in this turn to enter power mode When entering another mode refer to the configuration of test mode 1 Structure of Power Mode Overall Adjustment Mode Enter the test mode and press the VOL key to enter overall adjustment mode ...

Page 9: ...value flashing 052 Adjustment value lit In MO Automatic adjustment Mode No Mode Description 1 061 Sled in 2 062 Sled out 3 071 Focus search 4 031 MO EF balance 5 033 MO ABCD gain 6 031 MO EF balance 7 032 MO tracking offset 8 034 MO focus gain 9 035 MO tracking gain 10 036 MO focus bias SECTION 5 ELECTRICAL ADJUSTMENTS Notes for Adjustment In this set automatic adjustment of CD and MO can be per f...

Page 10: ...rnal circuit BPF3T 24 VCC Power supply terminal 2 4V 25 WBLADJ I Center frequency setting terminal for the internal circuit BPF22 26 TE O Tracking error signal output to the CXD2661GA 2 IC601 27 CSLED I Connected to the capacitor for low pass filter of the sled error signal 28 SE O Sled error signal output to the CXD2661GA 2 IC601 29 ADFM O FM signal output terminal of the ADIP 30 ADIN I Receives ...

Page 11: ...gital system 23 HOLD SW I HOLD switch S802 input terminal L hold off H hold on 24 XRFSW O Standby control signal output to the CXA2523ATQ T4 IC501 L standby 25 26 NC Not used open 27 SQSY I Subcode Q sync SCOR input from the CXD2661GA 2 IC601 L is input every 13 3 msec Almost all H is input 28 XINT I Interrupt status input from the CXD2661GA 2 IC601 29 30 DBB0 DBB1 I DIGITAL SOUND PRESET switch S3...

Page 12: ...an inverse trigger edge input from the the CXD2661GA 2 IC601 H edge detectable 60 BEEP O Beep sound drive signal output to the headphone amplifier IC301 61 VSS Ground terminal digital system 62 SPCK Not used open 63 RMC DTCK I O TSB serial communication data input output terminal for remote commander with headphone 64 SCLK O Serial clock signal output to the CXD2661GA 2 IC601 65 SRDT I Reading dat...

Page 13: ... 33 28 30 34 35 31 13 17 14 16 18 4 RESET SYSTEM CONTROL XWK3 CLK SLEEP XWK2 XWK1 FFCLR CHARGE PUMP VG B COMPARATOR 23 OSC1 STEP UP DC DC CONVERTER 25 26 PWM1 MODE SELECT 21 22 XRST XRST S801 OPEN CLOSE M M902 SLED SLED VOLTAGE MONITOR IC552 1 2 SLED VOLTAGE MONITOR IC552 2 2 W U V D901 INM VG C1H C1L C2H C2L VC VSTB SW VBH VB1 D1 DRY BATTERY SIZE AA IEC DESIGNATION LR6 1PC 1 5V DC IN 1 5V EXTERNA...

Page 14: ...50 15 45 20 21 80 25 75 30 70 35 65 40 61 41 IC801 S301 DIGITAL SOUND PRESET S803 AVLS LIMITNNORM 2N1NOFF C619 C902 C901 C611 C610 C608 C609 C511 R203 R903 R904 R901 R615 R612 R913 R909 R103 R301 R902 R911 R613 R607 R614 R618 R611 R610 R606 R605 R910 C308 C907 C906 C614 C607 C910 C919 L901 C911 D901 TP809 TP901 S802 HOLDc ONNOFF IC901 1 5 10 15 18 19 20 25 30 36 35 C904 C617 1 6 7 4 5 11 10 8 12 1...

Page 15: ... with a VOM Input im pedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal produc tion tolerances Circled numbers refer to waveforms Signal path J PLAY Replacement of CXD2661GA 2 IC601 used in this set requires a special tool Therefore it cannot be replaced r WAVEFORMS 1 IC501 ek RF 4...

Page 16: ...R PRE DRIVER 3 PHASE CONTROL PRE DRIVER PWM DRIVER PRE DRIVER PWM DRIVER VC VC VG VC VC VG VC VC VG VC VC VG VC VC VG VC VC VG VC VC VG VC VG VG VG VG VG VC VC VC VC REN ROE 1ntSTB 1ntSTB 1ntOE DO or DI F12 R12 F11 R11 R13 F13 R14 F14 DE VREG VREG CONT CLPF RGND VC GND VG PWM DI DO VB1 VB1 VB VB VB2 LI LI UO VO WO V0 V0 L2H L2L GND DCC2 GND DCC1 GND DCC1 HIU HIV HIW P11 P12 VPS2 PO2 GND PS PO1 VPS...

Page 17: ...EW PRECISION 56 X 4951 947 5 HOLDER ASSY 57 X 4951 948 1 CHASSIS ASSY 58 4 982 555 01 GEAR A 59 4 965 893 01 WASHER GEAR A STOPPER 61 X 4948 793 1 LEADSCREW ASSY 62 4 212 899 01 SPRING THRUST 63 4 214 478 01 SHAFT MAIN 064 X 4949 164 1 OPTICAL PICK UP BLOCK ASSY ODX 1B 65 4 222 330 01 PLATE RATCHET 66 4 214 207 01 SHEET OP M901 8 835 594 01 MOTOR DC SSM 01C03A SPINDLE M902 1 698 764 21 MOTOR SLED ...

Page 18: ...V C518 1 127 569 91 TANTAL CHIP 100uF 20 4V C519 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C520 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C521 1 164 156 11 CERAMIC CHIP 0 1uF 25V C522 1 135 259 11 TANTAL CHIP 10uF 20 6 3V C524 1 164 156 11 CERAMIC CHIP 0 1uF 25V C525 1 164 156 11 CERAMIC CHIP 0 1uF 25V C526 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C527 1 164 156 11 CERAMIC CHIP 0 1uF 25V C528 1 164 1...

Page 19: ...38 57 IC MPC1830ADTBEL IC902 8 759 599 62 IC XC6383C281MR JACK J301 1 778 179 11 JACK i 1 J302 1 793 553 11 JACK i 2 COIL L501 1 412 006 31 INDUCTOR CHIP 10uH L551 1 412 031 11 INDUCTOR CHIP 47uH L552 1 412 031 11 INDUCTOR CHIP 47uH L553 1 412 030 11 INDUCTOR CHIP 22uH L554 1 412 030 11 INDUCTOR CHIP 22uH L555 1 412 030 11 INDUCTOR CHIP 22uH L556 1 414 410 21 INDUCTOR 10uH L901 1 412 032 11 INDUCT...

Page 20: ...HIP 470K 5 1 16W R820 1 216 864 11 METAL CHIP 0 5 1 16W R821 1 216 857 11 METAL CHIP 1M 5 1 16W R828 1 216 864 11 METAL CHIP 0 5 1 16W R829 1 216 864 11 METAL CHIP 0 5 1 16W R830 1 216 864 11 METAL CHIP 0 5 1 16W R831 1 216 864 11 METAL CHIP 0 5 1 16W R832 1 216 864 11 METAL CHIP 0 5 1 16W R833 1 216 837 11 METAL CHIP 22K 5 1 16W R834 1 216 864 11 METAL CHIP 0 5 1 16W R841 1 216 809 11 METAL CHIP ...

Page 21: ...AL INSTRUCTION ENGLISH SPANISH TRADITIONAL CHINESE AEP E 3 045 493 21 MANUAL INSTRUCTION ENGLISH FRENCH US AEP FR UK E AUS 3 045 493 31 MANUAL INSTRUCTION ITALIAN GERMAN AEP 3 045 493 41 MANUAL INSTRUCTION DUTCH PORTUGUESE AEP 3 045 493 51 MANUAL INSTRUCTION SWEDISH FINNISH AEP 3 045 493 61 MANUAL INSTRUCTION SPANISH RUSSIAN AEP 3 045 575 01 CASE CARRYING 3 867 623 11 MANUAL INSTRUCTION ENGLISH JA...

Page 22: ... 32 MZ E75 9 927 170 12 Sony Corporation Personal Audio Division Company 2000A0270 1 Printed in Japan 2000 1 Published by General Engineering Dept ...

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