MICROFILM

SERVICE MANUAL

SPECIFICATIONS

SystemCompact disc digital audio system

Laser diode propertiesMaterial: GaAlAsWavelength: λ = 780 nmEmission duration: ContinuousLaser output: Less than 44.6 µW(This output is the value measured at a distanceof 200 mm from the objective lens surface onthe optical pick-up block with 7 mm aperture.)

D-A conversion1-bit quartz time-axis control

Frequency response20 - 20,000 Hz

+1–2

dB (measured by EIAJ CP-

307)

Output (at 4.5 V input level)Line output (stereo minijack)

Output level 0.7 V rms at 47 kilohmsRecommended load impedance over 10kilohms

Headphones (stereo minijack)Approx. 5 mW + Approx. 5 mW at 16 ohms(Approx. 3 mW + Approx. 3 mW at 16 ohms)**For the customers in France

Optical digital output (optical output connector)Output level: –21 - –15 dBmWavelength: 630 - 690 nm at peak level

Power requirementsFor the area code of the model youpurchased, check the upper left side of thebar code on the package.• Two Sony NH-14WM rechargeable batteries:

2.4 V DC• Two LR6 (size AA) batteries: 3 V DC

• AC power adaptor (DC IN 4.5 V jack):model:US/Canadian 120 V, 60 Hz

AEP/E13 model: 220 - 230 V, 50/60 HzUK model: 230 - 240 V, 50 HzTourist/E33 model: 100 - 240 V, 50/60 HzHong Kong model: 220 V, 50/60 HzChinese model: 220 V, 50 Hz

• Sony DCC-E245 car battery cord for use oncar battery: 4.5 V DC

Battery life* (approx. hours)(When you use the CD player on a flat and stablesurface.)Playing time varies depending on how the CDplayer is used.

Two NH-14WM 25(charged forabout 4 hours**)

Battery case (two 40alkaline batteries)

Rechargeable batteries 62NH-14WM and batterycase (two alkalinebatteries)

* Measured value by the standard of EIAJ(Electronic Industries Association of Japan).

** Charging time varies depending on how therechargeable battery is used.

Operating temperature5°C - 35°C (41°F - 95°F)

Dimensions (w/h/d) (excludingprojecting parts and controls)Approx. 127.2 × 19 × 130.1 mm(5 1⁄8 × 3⁄4 × 5 1⁄8 in.)

Mass (excluding rechargeablebatteries)Approx. 167.5 g (6.0 oz)

Supplied accessoriesAC power adaptor (1)Headphones/earphones with remote control (1)Rechargeable batteries (2)Battery carrying case (2)Carrying case (1)Battery case (1)AC plug adaptor (1)** Supplied with Tourist and E33 models

Design and specifications are subject to changewithout notice.

• AbbreviationE13: 220 - 230 V AC area in E modelE33: 100 - 240 V AC area in E model

PORTABLE CD PLAYER

D-E990/EJ915

Photo: D-E990

US ModelCanadian Model

AEP ModelUK Model

E ModelChinese Model

D-EJ915

Tourist ModelD-E990

Model Name Using Similar Mechanism NEW

CD Mechanism TypeUS : CDM-3022EBGOther : CDM-3022EBA

Optical Pick-Up NameUS : DAX-22EGOther : DAX-22E

Ver 1.0 1999. 10

D-E990/EJ915

– 19 – – 20 – – 21 – – 22 –

5-5. SCHEMATIC DIAGRAM • See page 15 for Waveforms. • See page 23 for IC Block Diagrams.

Note on Schematic Diagram:• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolyticsand tantalums.

• All resistors are in Ω and 1/4 W or less unless otherwise

specified.• % : indicates tolerance.• C : panel designation.

• U : B+ Line.• Power voltage is dc 4.5 V and fed with regulated dc power

supply from DC IN jack (J401).• Voltages and waveforms are dc with respect to ground in

playback mode.no mark : CD PLAY

• Voltages are taken with a VOM (Input impedance 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 : CD PLAY (ANALOG OUT)c : CD PLAY (OPTICAL OUT)

• AbbreviationFR : French model

Note:The components identi-fied by mark 0 or dottedline with mark 0 are criti-cal for safety.Replace only with partnumber specified.

Note:Les composants identifiés parune marque 0 sont critiquespour la sécurité.Ne les remplacer que par unepièce portant le numérospécifié.

(US)(EXCEPT US)

– 23 – – 24 – – 25 – – 26 –

• IC Block Diagrams

IC351 TA2120FN (EL)

IC402 MPC17H71MTAEL

+ –+–+ –

23 20 19 18 17 16 15 14 13

2 3 4 5 6 7 8 9 10 11 121

24

BIAS BEEPPWSW

MTSW

ALCDET

ATTSW

PWCSW

OUT B OUT A

BEEP IN

BST

PWB

PWC

BSTNF

ADDOUT

RF IN PWCSW

OUT B OUT C OUT A PWRGND

MIXOUT

ALCIN

ALCDET

ATTSWIN AIN BGND

MTTC

MTSW

PWSWBIAS

BIASIN

BSTSW

BSTOUT

VCC

ADDA

ADDB

2122

PWA

ALC ALC

1

2

3

4

56789

1011

1213

14

15

18

1920

21

22

23

24

25

26

2930

2728

17

16

MODE CONTROL ROTATIONDETECTORMODE CLOCK REGULATOR

HOLD PWM REGULATOR

MODE TIME REGULATOR

CLOCK DIVIDER

STATE MACHINE

STARTUP PATTERNGENERATOR

PATTERN REGULATORSEQUENCER

CPU INTERFACE

SERIAL PORT

PARALLEL INTERFACE

OPERATION MODE

OPERATION MODE REGULATOR

TEST MODE REGULATOR

PREDRIVER

FEEDBACK PATTERNGENERATOR

BEMFSEPARATOR

OVERFLOW REGULATORPHASE DELAY REGULATOR

FEEDBACK RESISTOR

PHASE DECODER

PWMDECODER

FG

SYNC

PWM

POL

TESTRST

DATALTCH

CLK

VCAGND

OEBVDU

U

PGDUV V

VDVW

W

PGDWVG

DGND

W1

OE

WP

VP

UP

BEMFDETECT

V1

U1

COM

TST0TST1TST2TST3NC

IC401 MPC17A52ZFTA IC601 CXD3027R

21 22 232019

18

1716

15141312

11

10

9

876

5

4321

71 70 69 6872

PREDRIVER

H BR

IDGE

ON

H BR

IDGE

ON

H BR

IDGE

ON

SYSTEMCONTROL,

INPUT/OUTPUT

CONTROLLER

VGVC VC

VC

VC

VC

VC

VC

VC

VC

VG

VG

VG

VG

VG

VGDCINVC

VC

VIN

VC VG

VC VG

VIN VIN

VC

DCIN

VG

VG

D1 (DRV MUTE)

25 26 27 2824 29 30 31 32 33 34 35 36

37383940

PREDRIVER

CLOCK

CONTROLLER

41424344

5051525354

4645

474849

SWITCHINGPOWER

CIRCUIT 2

SWITCHINGPOWER

CIRCUIT 3

BAND GAPREFERENCE

SUBREFERENCE

PRE-DRIVER

DOWN SIDEPRE-DRIVER

DOWN SIDEPRE-DRIVER

UP SIDEPRE-DRIVER

UP SIDEPRE-DRIVER

SAW TOOTHWAVEFORM

OCCURRENCECIRCUIT

LINEAR, CONSTANTCURRENT, CONSTANTVOLTAGE CHARGING

BATTERY CHARGE CIRCUIT

SWITCHING POWERCIRCUIT 1

CHARGING BATTERYVOLTAGE DETECTOR

CIRCUIT

LINEAR REGULATOR

VGPOWER CIRCUIT

VC

67 66 65 64 63 62 61 60 59 58 57 56 55

LOW VOLTAGE DETECTOR

HPI2

HPOU

T2

HPOU

T1

VHP

VD3

VD23

RO2

MGN

D2 FO2

VD12

RO1

MGN

D1 FO1

VD1

RO3

FO3

MGN

D3

HPGN

D

VLG3RF21PAPC

APCREF

VREF

L4RF2

INM2

VG

GND

SYNC

WAKEUPCLOCK

DATALATCHC

FI3RI3

HPI1

FI1RI1FI2RI2

CHGSWRSINM4RF4

DCINDCIN

VCVCPRSTBMODE1

MODE2DTC2DDTC1DINM1RF1

INP1

CHGM

NTBA

TM2

BATM

1

VLG1

O

L1L

PGND

1

L1H

VIN

L2H

PGND

2

L2L

VLG2

OPG

ND3

L3DTC3

RF3

INM

3

D2 (H BRIDGE/HEADPHONE)D3 (HPON)

ERRORCORRECTOR

32KRAM

EFMDEMODULATOR

SUB CODEPROCESSOR

SERVOAUTO

SEQUENCER

D/AINTERFACE

VIBRATIONMEMORY

CONTROLLER+

COMPRESSIONEXPANDER

DAC

SELECTOR

DIGITALOUT

ASYMMETRYCORRECTOR

DIGITALPLL

DIGITALCLV

CPUINTERFACE

OP AMPANALOG SWITCH

SERVO BLOCK

SIGNALPROCESSOR

BLOCK

MEMORY CONTROLLER,BUS BOOST BLOCK

A/DCONVERTER

SERVOINTERFACE

SERVO DSPFOCUS SERVO

SLED SERVO

TRACKING SERVO

CLOCKGENERATOR

LPF

LPF

MIRRDFCTFOK

PWM GENERATOR

FOCUS PWMGENERATOR

SLED PWMGENERATOR

TRACKING PWMGENERATOR

908988878685848382818079787776757473727170696867666564636261

123456789101112131415161718192021222324252627282930

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

XOE

A0 – A11

SYSMAMUTE

HPLHPMHPR

PCMDILRCKIBCKI

AOUT1AIN1

LOUT1

LOUT2AIN2

AOUT2

A9A8A7

DVSS

RFAC

XTAO

XTAI

XTSL

VCTL

VPCO

WFC

KGF

SXU

GFM

DS

C2PO

WDC

K

BIASASYIASYO

FILOFILIPCO

PWMILOCKMDP

SDTISCSYSCORSBSOEXCKSDTOXLATCLOKSENSXSOER4M

IGEN

VDD0

COUT

MIR

RDF

CT FOK

PWM

ILO

CKHP

RHP

MHP

LVD

D1C1

76M

DPM

DSSS

TPSF

DRSR

DRTF

DRTR

DRFF

DRFR

DR

FRDRFFDRTRDRTFDRSRDRSFDR

SCLKATSK

SSTPCOUT

FOKDFCTMIRR

VSS1

TEST

TES1

AVDD

0IG

ENAV

SS0

RFDC

E F

120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91

XOE

XCAS

D2 D3 D0 D1 XWE

XRAS

A11

A10

DVDD

A0 A1 A2 A3 AVDD

2LO

UT2

AIN2

AOUT

2AV

SS2

AVSS

1AO

UT1

AIN1

LOUT

1AV

DD1

XVSS

XTAO

XTAI

XVDD

BCKI

XOE

XCAS D2 D3 D0 D1 XWE

XRAS

A11

A10

DVDD A0 A1 A2 A3

AVDD

2LO

UT2

AIN2

AOUT

2AV

SS2

AVSS

1AO

UT1

AIN1

LOUT

1AV

DD1

XVSS

XTAO

XTAI

XVDD

BCKI

VDD0

COUT

MIR

RDF

CTFO

KPW

MI

LOCK

HPR

HPM

HPL

VDD1

MDP

MDS

SSTP

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

VSS1

A VD

D

A GN

D

D VD

D

AVDD

0IG

ENAV

SS0

RFDC E F

RFDCEFBA

VC

CLTVXPCK

A6A5A4

XWREXRDEXEMPXWIHXQOK

AMUTESDTI

XQCKSCSYSCORVSS0SBSOEXCKXRSTSYSMSDTOXLATCLOKSENSSCLKXSOEATSKR4M

A9A8A7

DVSSA6A5A4

XWREXRDEXEMPXWIHXQOK

AMUTESDTI

SCSYSCORVSS0

D GNDSBSOEXCK

SYSMSDTOXLATCLOKSENSSCLKXSOEATSKR4M

BCKPCMDIPCMDLRCKILRCKDOUTVDD2WFCKC2POGFSXPCKXUGFWDCKVSS2XTSLAVDD3ASYOASYIBIASRFACAVSS3CLTVPCOFILIFILOVCTLVPCOVCAB

BCKPCMDIPCMDLRCKILRCKDOUTVDD2WFCKC2POGFS

XPCKXUGFWDCKVSS2XTSL

AVDD3ASYOASYIBIASRFAC

AVSS3CLTVPCOFILIFILOVCTLVPCO

VCAB

XCAS

D0 – D4

XWE

BCKPCMDLRCK

DOUT

XWRE

XRAS

XRDE

XQOKXWIHXEMP

IC602 MSM51X17400D-10TFSR1

IC802 CXD751-103R

ON CHIPVBB GENERATOR

TIMINGGENERATOR TIMING

GENERATOR

REFRESHCONTROL CLOCK

INTERNALADDRESSCOUNTER

COLUMNADDRESSBUFFER

11 COLUMNDECODER

ROWADDRESSBUFFER

ROWDECODER

WORDDRIVER

WRITECLOCK

GENERATOR

1

234

5

67

98

101112

13

25

26

24

23

22

11

4 4

4

115

11 11

1819

171615

14

2021

MEMORYCELLS

SENSAMPLIFIER

I/OSELECTOR

OUTPUTBUFFER

4 4

46

INPUTBUFFER

VCC

DQ1DQ2XWE

XRAS

NC

A10A0A1A2A3

VCC

DQ4

VSS

DQ3

XCAS

XOE

A9

A8A7A6A5A4

VSS

22

252627

2829

303132

161514

1312

1110

9

BITSELECT

SERIALPARALLEL

CONVERTER

TSBSIGNAL

ENCODERDECODER

24 23 22 21 20 19 18 17

1 2 3 4 5 6 7 8

PO26

PO27

NC NC VSS2

TSB

RW

SEL2

2

SEL2

0

VSS0

XLT2

SO2

SCK2

REQ

SEL2

1

XLT

SCKSO1SI

VDD0VSS1

RSTMCLK

BUSY

PO25PO24PO23

VSS3VDD1

PO22PO21PO20