Sony CD Walkman D-E880 Manual de usuario

MICROFILM

SERVICE MANUAL

PORTABLE CD PLAYER

SPECIFICATIONS

D-E880/EJ815

Photo: D-EJ815 Silver model

US Model

E Model

Chinese Model

D-EJ815

Tourist Model

D-E880

Model Name Using Similar Mechanism NEW

CD Mechanism Type US : CDM-3022EBG

Other : CDM-3022EBA

Optical Pick-Up Name US : DAX-22G

Other : DAX-22E

Ver 1.0 1999. 10

– 2 –

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C dur-

ing repairing.

• Do not touch the soldering iron on the same conductor of the

circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering

or unsoldering.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0OR DOTTED

LINE WITH MARK 0ON THE SCHEMATIC DIAGRAMS

AND IN THE PARTS LIST ARE CRITICAL TO SAFE

OPERATION. REPLACE THESE COMPONENTS WITH

SONY PARTS WHOSE PART NUMBERS APPEAR AS

SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-

LISHED BY SONY.

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY ......................................................... 5

4. ELECTRICAL ADJUSTMENTS......................... 7

5. DIAGRAMS

5-1. Block Diagram – MAIN Section (1/2) – ........................ 9

5-2. Block Diagram – MAIN Section (2/2) – ........................ 11

5-3. Block Diagram – POWER SUPPLY Section – .............. 13

5-4. Printed Wiring Board ...................................................... 16

5-5. Schematic Diagram ......................................................... 19

5-6. IC Pin Function Description ........................................... 27

6. EXPLODED VIEWS................................................ 29

7. ELECTRICAL PARTS LIST ............................... 32

This appliance is classified as a CLASS 1 LASER product.

The CLASS 1 LASER PRODUCT MARKING is located on

the rear exterior.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous ra-

diation exposure.

– 3 –

SECTION 1

SERVICING NOTES

The laser diode in the optical pick-up block may suffer electro-

static breakdown because of the potential difference generated by

the charged electrostatic load, etc. on clothing and the human body.

During repair, pay attention to electrostatic breakdown and also

use the procedure in the printed matter which is included in the

repair parts.

The flexible board is easily damaged and should be handled with

care.

Befor Replacing the Optical Pick-Up Block

Please be sure to check thoroughly the parameters as par the “Op-

tical Pick-Up Block Checking Procedures” (Part No.: 9-960-027-

11) issued separately before replacing the optical pick-up block.

Note and specifications required to check are given below.

• FOK output: IC601 eg pin

When checking FOK, remove the lead wire to disc motor.

• RF signal P-to-P value: 0.35 to 0.65 Vp-p

Precautions for Checking Emission of Laser Diode

Laser light of the equipment is focused by the object lens in the

optical pick-up so that the light focuses on the reflection surface

of the disc. Therefore, be sure to keep your eyes more then 30 cm

apart from the object lens when you check the emission of laser

diode.

Laser Diode Checking Methods

During normal operation of the equipment, emission of the laser

diode is prohibited unless the upper lid is closed while turning ON

the S801. (push switch type)

The following two checking methods for the laser diode are oper-

able.

• Method:

Emission of the laser diode is visually checked.

1. Open the upper lid.

2. With a disc not set, turn on the S801 with a screwdriver having

a thin tip as shown in Fig.1.

Note: Do not push the detection lever strongly, or it may be bent or dam-

aged.

3. Press the ubutton.

4. Observing the objective lens, check that the laser diode emits

light.

When the laser diode does not emit light, automatic power

control circuit or optical pickup is faulty.

In this operation, the objective lens will move up and down 5

times along with inward motion for the focus search.

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

Fig. 1 Method to push the S801

detection lever

S801

main board

– 4 –

SECTION 2

GENERAL This section is extracted from

instruction manual.

– 5 –

CABINET (UPPER) SUB ASSY, CABINET (LOWER) SUB ASSY

Note: Follow the disassembly procedure in the numerical order given.

SECTION 3

DISASSEMBLY

open the upper lid sub assy.

three screws (B2)

cabinet (upper) sub assy

three claws

flexible board

(CN801)

two claws

two screw (B2)

cabinet (lower) sub ass

five claws

S804

knob (HOLD)

cabinet (lower) sub assy

knob (AVLS)

S803

CDM-3022EBA (EXCEPT US)

CDM-3022EBG (US)

INSTALLATION MAIN BOARD

On installation MAIN board, adjust the S803,

804 and knobs (HOLD, AVLS).

– 6 –

INSTALLATION UPPER LID SUB ASSY

flexible board

cabinet (upper) sub assy

switching arm assy

upper lid sub assy

three bosses

After sticking the switching arm assy into

the hole on the cabinet, connect them with screw.

To remove the switching arm assy, following

reverse procedure, remove screw, then

three bosses.

Note: Follow the disassembly procedure in the numerical order given.

– 7 –

SECTION 4

ELECTRICAL ADJUSTMENTS

The CD section adjustments are done automatically in this set.

In case of operation check, confirm that focus bias.

Precautions for Check

1. Perform check in the order given.

2. UseYEDS-18 disc (Part No.: 3-702-101-01) unless otherwise

indicated.

3. Power supply voltage requirement: DC4.5 V in DC IN jack.

(J401)

VOLUME button: Minimum

AVLS switch : NORM

HOLD switch : OFF

Checking Location:

– MAIN board (Side A) –

Focus bias Check

Condition:

• Hold the set in horizontal state.

Connection:

Procedure:

1. Connect the oscilloscope to the test points TP601 (RF) andTP

(GND) on the MAIN board.

2. Set a disc. (YEDS-18)

3. Press the ubutton.

4. Check the oscilloscope waveform is as shown below.

A good eye pattern means that the diamond shape (◊) in the

center of the waveform can be clearly distinguished.

RF Signal reference Waveform (Eye Pattern)

VOLT/DIV : 100 mV (With the 10:1 probe in use)

TIME/DIV : 500 ns

To watch the eye pattern, set the oscilloscope to AC range and

increasetheverticalsensitivity of theoscilloscopeforeasy watch-

ing.

5. Stop revolving of the disc motor by pressing the xbutton.

D-E880/EJ815

– 9 – – 10 –

SECTION 5

DIAGRAMS

5-1. BLOCK DIAGRAM – MAIN Section (1/2) –

RF AMP,

DIGITAL SIGNAL PROCESSOR,

DIGITAL SERVO PROCESSOR,

D-RAM CONTROLLER

IC601

DIGITAL

OUT

SWITCHING

Q604

LPF

SIGNAL

PROCESSOR

BLOCK

MEMORY

CONTROLLER,

BUS BOOST

BLOCK

SERVO

BLOCK

MDS

MDP

SENS

SCOR

SDTO

XTAI

XTAO

RFAC

XSOE

R4M

XLAT

CLOK

DOUT

XRAS

XWE

XCAS

XOE

LOUT1

LOUT2

AMUTE

FOK

SFDR

XRST

RFDC

D0-D3

A0-A10

WDCK

WFCK

XTAO

XTAI

SRDR

TRDR

FRDR

FFDR

TFDR

59 F

RFDC

RFAC

LASER DIODE

OPTICAL PICK-UP BLOCK

DAX-22G (US)

DAX-22E (EXCEPT US)

(Page 13)

DETECTOR

VCC

X601

16.9MHz

2, 3, 24, 25

9 – 12, 15 – 19, 21, 8

D-RAM

IC602

DQ1-DQ4A0-A10

XRAS

DOUT

XWE

XCAS

XOE

CONTROLLER,

PREDRIVER

SFDR

SRDR

FFDR

FRDR

TFDR

TRDR

M901

(SLED)

(FOCUS)

(TRACKING)

FI2

RI2

FI1

RI1

FI3

FO2

RO2

FO1

RO1

FO3

RO3

FOCUS/TRACKING COIL DRIVER

SLED MOTOR DRIVER

IC401 (2/2)

2826 30 35

242523

3511 44

43101225

MODE

CONTROL

ROTATION

DETECTOR

BEMF

SEPARATOR

PREDRIVER

FEEDBACK

PATTERN

GENERATOR

PHASE/PWM

DECODER

44 MDS

43 MDP

SCOR

C176

FOK

R4M

XIN

XHGON

HOLD

OPEN

XSOE

WDCK

WFCK

SDTD

SENS

CLOK

XLAT

XSOE

GRSCOR

FOKI

WFCKI

SDTD

SCOR

SDTI

SCK

XLAT

+BUFFER

IC403

SYNC

RST

DATA

LTCH

CLK

OEB

PWM

POL

COM

SPINDLE MOTOR DRIVER

IC402

M902

(SPINDLE)

DRVLT

XSPDOE

HOLD

OFF

VCPU 2V

S801

(OPEN)

OPTICAL

PICK-UP

POWER ON

SWITCH

Q411

VDD 2V

SYSTEM CONTROLLER

IC801 (1/3)

SDTO

SCK

SYNC

RST

2-AXIS

DEVICE

CPU

INTERFACE

S804

HOLD

116, 115, 118, 117

109 – 106, 7 – 5, 3 – 1, 111

104

113

114

119

120

AMUTE

XRST

R4M (Page 11)

(Page 11)

(Page 13)

• SIGNAL PATH

: CD PLAY (ANALOG OUT)

: CD PLAY (OPTICAL OUT)

(EXCEPT US:TYPE A)

D-E880/EJ815

– 11 – – 12 –

5-2. BLOCK DIAGRAM – MAIN Section (2/2) –

47 76 14 7 9 28 38 1918

B+ SWITCH

Q601

LCD BACK LIGHT

DRIVE

Q801

DRIVE LIQUID CRYSTAL

DISPLAY

LINE MUTE

CONTROL SWITCH

Q302

XDOUTON

XHPSW

SEL

AMUTE

XRST

BEEP

XLIGHT

AVLS

RMKEY

KEY

SYSTEM CONTROLLER

IC801(2/3)

D601

VCC +3V

(LINE OUT JACK)

J301

LINE OUT

(OPTICAL)

OPTICAL

TRANSCEIVER

VCPU 2V

TSB

RMKEY

GND

J302

/ REMOTE

SWITCH UNIT

(1/2)

SWITCH UNIT

(2/2)

VCDKEY

VCPU 2V

OFF

S803

AVLS

VCPU 2V

IN_R

IN_L

HEADPHONE AMP

IC351

HEADPHONE ON/OFF SWITCH

IC302

OUT_R

OUT_L

PW_SW

MT_SW

BEEP

PW SW

BEEP

MT SW

TAP802

(TEST)

LOUT2

LOUT1

VOLUME +

–

S810S809

50 – 64

SEG14

SEG0

COM3

COM0

65 – 68

RMDATI

RMDATO

RMSCK

RMLAT

RMRW

MICRO COMPUTER

INTERFACE

REMOTE

CONTROL

INTERFACE

18 RW

17 XLT

16 SCK

15 19

SO TSB

14 1SI

10 MCLK

COMMUNICATION FORMAT CONVERTER

IC802

RSTB D415

(Page 10) DOUT

(Page 10)

(Page 10) AMUTE

(Page 10) XRST

(Page 10)

(Page 13)

R4M

RST

RESET

• SIGNAL PATH

: CD PLAY (ANALOG OUT)

: CD PLAY (OPTICAL OUT)

MUTING

Q301

D-E880/EJ815

– 13 – – 14 – – 15 –

5-3. BLOCK DIAGRAM – POWER SUPPLY Section – 1IC401 qd CLOCK, IC402 9CLK

IC601 wg CLOK, IC801 q; SCK

2 V/DIV, 2 µs/DIV

2IC601 e; R4M

500 mV/DIV, 200 ns/DIV

3IC601 rd MDP (CD PLAY)

1 V/DIV, 2 µs/DIV

4IC601 ua RFAC (CD PLAY)

100 mV/DIV, 500 ns/DIV

5IC601 ih LRCK

1 V/DIV, 20 µs/DIV

6IC601 o; BCK

1 V/DIV, 200 ns/DIV

7IC601 of XTAO

500 mV/DIV, 50 ns/DIV

8IC801 ul XIN, IC802 q; MCLK

500 mV/DIV, 200 ns/DIV

2.1 Vp-p

1.9

2.1 Vp-p

472 ns

2.1 Vp-p

236 ns

2.1 Vp-p

59 ns

2.1 Vp-p

3.8

2.1 Vp-p

236 ns

350-650 mVp-p

2.1 Vp-p

22.6

• Waveforms

LINEAR

CONSTANT CURRENT,

CONSTANT VOLTAGE

CHARGING BATTERY

CHARGE CIRCUIT

CHARGING BATTERY

VOLTAGE DETECTOR

CIRCUIT

SAWTOOTH

WAVEFORM

OCCURRENCE

CIRCUIT

UP SIDE

PRE-DRIVER

SWITCHING

POWER

CIRCUIT 2

WAKE UP

SWITCH

Q409, 413,

Q416

LASER VOLTAGE

LIMITER

Q412

RIPPLE

FILTER

Q406

CHARGE

CONTROL

Q402, 407

CHARGE ON

SWITCH

Q403, 404

EXTERNAL BATTERY

SWITCH

Q408

B+

SWITCH

Q401, 405

SWITCHING

Q414

SWITCHING

POWER

CIRCUIT 1

LENEAR

REGULATOR

SYSTEM

CONTROL,

INPUT/OUTPUT VG

POWER

CIRCUIT

LOW

VOLTAGE

DETECTOR

CLOCK

CHG SW

RF4

INM4

RF21

RF2

VCP

INM2

APCREF

PAPC

PA PC

MODE2

MODE1

WAKEUP

LATCHC

DATA

CLOCK

DATA

CLOCK

VLG2O

SYNC

SDTO

SCK

SYNC

DTC2D

DTC1D

INP1

DC IN

V IN

RF4

INM4

CHGSW

V IN

DC IN

BATM1

LATCHC

WAKEUP

VLG1O

BATM1

BATM2

CHGMNT

VLG2O

VLG1O

RSTB

SLPOUT

VCC2_ON

XPOWLT

CHGMNT1

DCINMNT

EX_BATT

BATMNT

VCC_SWITCHING

XAPC_OFF

AGCCON

SYSTEM CONTROLLER

IC801 (3/3)

RSTB

RST

VCC 2V

VCPU 2V

D416

D411

VCC 2V

D404

D402

D406

D410

D401

RECHARGEABLE

BATTERY

NC-WMAA

2PCS. 2.4V

DRY BATTERY

SIZE “AA”

(IEC DESIGNATION LR6)

2PCS. 3V

3V,

SPINDLE MOTOR

DRIVER (IC402) 3V,

HEADPHONE

AMP (IC351) 3V

DC IN 4.5V

–+

J401 (1/2)

J401 (2/2)

EXT BATT

VCC 3V

CHARGE

LOW BATTERY

DETECTOR

IC404

POWER CONTROL

IC401 (1/2)

(Page 9)

(Page 10)

(Page 11)

(Page 10)

D-RAM

(IC602)

B+

SWITCH

Q602

Q603

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