Sony CD Walkman D-E551 User manual

MICROFILM

COMPACT DISC COMPACT PLAYER

US Model

D-E551/E555/E556CK

AEP Model

UK Model

D-E555/E556CK

SPECIFICATIONS

D-E551/E555/E556CK

Model Name Using Similar Mechanism D-E700/E705

CD Mechanism Type CDM-2911EBA

Optical Pick-Up Name DAX-11E

SERVICE MANUAL

Ver 1.0 1999. 02

D-E551/E555/E556CK

– 25 – – 26 – – 27 – – 28 –

6-5. SCHEMATIC DIAGRAM • See page 21 forWaveforms. •See page 29 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 electrolytics

and tantalums.

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

specified.

•¢: internal component.

•U: B+ Line.

•H: adjustment for repair.

• Powervoltageis dc 4.5V and fed withregulateddcpower

supply from external power voltage jack.

• Voltages and waveforms are dc with respect to ground

under conditions in service mode.

no mark :CD PLAY

∗: Impossible to measure

• Voltagesaretakenwith a VOM(Inputimpedance10MΩ).

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)

• Abbreviation

FR : French model

Note: The components identified by mark !or dotted line

with mark !are critical for safety.

Replace only with part number specified.

D-E551/E555/E556CK

– 29 – – 30 – – 31 – – 32 –

OFFSET

ADJO TIMING

GENERATOR ERROR

CORECTION

INTERPOLATION

SUB CODE

FOCUS

FILTER

FOCUS

CONTROL

PLL

80 79 78 77 75 72 71 6776 74 73 70 69 68 66 65 64 61

63 62

MICRO

COMPUTER

INTERFACE

23 26 29 30 3425 27 28 31 32 35 36 37 40

38 39

SLED

TRACKING

FILTER

SUB CODE

16K SRAM

WINDOW

EFM

CLV SERVO

TRACK

JUMP

BUBCK

SUBDATA

SUBSYQ

WECK

RFCK

DGND

MIRROR

SCRATCH

MUTE2

MUTE1

CLVOPO

CLVOPN

CLVOPP

TEST4

TEST3

CLVOUT

SDOUT

SDIN

TDOUT

FDOUT

21 22

TEST2

TCAPA

TZC

ATS

TEIN

OFN

FFCAPA

FEIN

FOK

RVCO

AGND

ADPFD

ADPFI

TEST1

PCO

PCI

EYE

ASY

AVDD C1FX

C2FX

C3FX

C4FX

GAINUP

CK176

BUSY

DOUT

DIN

MCK

C2F2

C2F1

C1F2

C1F1

C2CLK

C2F

LRCK

DOUTA

DCK

CLK

DGND

RESET

SYSCKI

GFS

SENS

XPLCK

COMPC

• IC Block Diagrams

IC301 TC9438FNEL

IC302 TA2120FN (EL)

IC401 MPC18A26VMEL IC501 BA6386K IC502 BU9325BKS

IC601 SM5902AF

DATA

INTERFACE

CIRCUIT

MICRO COMPUTER

INTERFACE

CIRCUIT OSC

TIMING

GENERATOR

DINAMIC

BASS BOOST

CIRCUIT DIGITAL FILTER CIRCUIT

DEEMPHASIS FILTER CIRCUIT

ATTENUATOR OPERATIONAL CIRCUIT

∑-∆MODULATION CIRCUIT

OUTPUT

CIRCUIT

ANALOG

FILTER

TEST

CIRCUIT

OUTPUT

CIRCUIT

ANALOG

FILTER

24 23 22 21 17 16 15 14

19 18

34 8 10 11 12

1 2 6 7

LRCK BCK DATA DBB2

(DBB1)

ATT (EMP)

SHIFT (SM)

LATCH VDX XO XI GNDX MCK

VDD T1 VDA RO GNDA VR

P/S GNDA LO VDA ZD GNDD

–

23 20 19 18 17 16 15 14 13

234 5 678910 11 12

BIAS BEEP

SW MT

ALC

DET

ATT

PWC

OUT B OUT A

BEEP

BST

BPW

BST

NF ADD

OUT RF IN PWC

SW OUT B OUT C OUT A PWR

GND MIX

OUT ALC

IN ALC

DET

ATT

IN AIN BGND

BIAS

BST

OUT

VCC

ADD

ALC ALC

–

ERROR AMP

CHARGESW

CHARGE

AMP

DCIN DETECT 35

ERROR AMP

PWM2

10 PWM1

SYSTEM

CONTROL

OSC2

LOW VCPU

DETECT

VCPU

BANDGAP

REFERENCE

STEP-UP

DC-DC

CONVERTER

REGULATOR

SAWTOOTH

PWM4

SUB

REFERENCE

INM3

RF3

DCIN

CHGSW

BATM

CHGOUT

VIN

VOUT2

VOUTB1

VOUT1

UPCKB1

UPCK1

VDO

VCPU

GND

DCDTB

RF2

INM2

INP2

DTC3

RF1

INM1

INP1

CMP1

DTC1

VREF

SWEN

RSTB

CKOUT

SYNC

PCB

CHGON

DET BLOCK

PS PL BL BS

–

FOCUS

SWITCH

SCRATCH

CONTROL

RAMP

OSC

–

2122

23 20 19 17

–

5 7

–

FOCUS BIAS

EFM

MIRR

DEFECT

13 FEO

FOK

FON

TEO

DFR

SROCH

CAPC

CAGC

GND

FBIAS

RF- RFO RFI VCC PLH BLT RAGC ASY

HOLD BLOCK

LOOP ON

–

ENCODER

GENERAL

PORT INPUT

CONTROL 1

DRAM 1/F

DECODER

MICRO

COMPUTER

1/F

ATTENUATOR

INPUT

BUFFER INPUT

1/F

OUTPUT

1/F

INPUT

CONTROL 2

811

33 32 31 30 29 28 27 23

13456

COMPRESSION

MODE

THROUGH

MODE

NWE

NCAS

A10/NCAS2

NRAS

VDD2

UC1

UC2

UC3

UC4

UC5

DIT

NTEST

CLK

VSS

YSRDATA

VDD1

ZSENSE

NRESET

YBLKCK

YFCLK

YFLAG

ZSRDATA

ZLRCK

ZSCK

YSCK

YLRCK

YDMUTE

YMLD

YMDATA

YMCLK

– 33 –

IC504 MPC17A51VMEL

CHAGE

PUMP

CLK

C2H

C1H

C1L

C2L

VCG

MOTOR

DRIVER

CH3

CF3

ERR3

OUT3A

OUT3B

MOTOR

DRIVER

CH4

SAWTOOTH

CF4

ERR4

OUT4A

PGND4

OUT4B

SAW

GEN

CLK

SAWTOOTH

VLG

VIN12

VCG

VLG VG VIN12

VIN34

VLG VG VIN12

VLG VG VIN34

MOTOR

DRIVER

CH1

CF1

ERR1

PGND1

OE OUT1A

OUT1B

VLG VG VIN12

LOW

VOLTAGE

DETECTOR

VLG

AGND PSB

PSB

SAWTOOTH PSB

PGND3

C2H

C1H

C1L

C2L

VIN34

OUT3A

PGND3

OUT3B

OUT4B

PGND4

OUT4A

VIN34

CF4

ERR4

ERR3

CF3

AGND

DGNG

CLK

VLG

VIN12

OUT1A

PGND1

OUT1B

OUT2B

PGND2

OUT2A

VIN12

CF2

ERR2

ERR1

CF1

MOTOR

DRIVER

CH2

SAWTOOTH

CF2

ERR2

PGND2

OUT2A

OUT2B

PSB

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