Sony D-E888, D-E999, D-EJ825, D-EJ925 Service Manual

D-E888/E999/EJ825/EJ925

SERVICE MANUAL

Ver 1.0 2000. 10

Photo: D-E999

SPECIFICATIONS

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs Wavelength: λ = 780 nm Emission duration: Continuous Laser output: Less than 44.6 µW (This output is the value measured at a distance of 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.)

D-A conver sion

1-bit quartz time-axis control

Frequency response

20 - 20 000 Hz

307)

Output (at 4.5 V input level)

Line output (stereo minijack)

Output level 0.7 V r m s at 47 kΩ Recommended load impedance over 10 kΩ

Headphones (stereo minijack)

Approx. 5 mW + Approx. 5 mW at 16 Ω (Approx. 0.5 mW + Approx. 0.5 mWat 16 Ω)*

*For the customers in France

Optical digital output (optical output connector)

Output level: –21 - –15 dBm Wavelength: 630 - 690 nm at peak level

Power requirements

For the area code of the model you purchased, check the upper left side of the bar code on the package.

• Two Sony NC-6WM rechargeable batteries:

2.4 V DC

• Two Sony NH-14WM rechargeable batteries:

2.4 V DC

• Two LR6 (size AA) batteries: 3 V DC

+1–2

dB (measured by EIAJ CP-

• AC power adaptor (DC IN 4.5 V jack): US/Canadian model: 120 V, 60 Hz AEP/E13 model: 220 - 230 V, 50/60 Hz

UK model: 230 - 240 V, 50 Hz Tourist model: 100 - 240 V, 50/60 Hz Hong Kong model: 220 V, 50/60 Hz

Chinese model: 220 V, 50 Hz Korean model: 220 V, 60Hz

• Sony DCC-E84 car battery cord for use on car battery: 4.5 V DC

Battery life* (approx. hours)

(When you use the CD player on a flat and stable surface.) Playing time varies depending on how the CD player is used.

When using G-PROTECTION

Two NC-6WM 15 14 (charged for about 4 hours**)

Two NC-14WM 29 28 (charged for about 4 hours**)

External battery case 50 48 (two alkaline batteries)

Rechargeable batteries 65 61 NC-6WM and external battery case (two alkaline batteries)

Rechargeable batteries 80 76 NH-14WM and external battery case (two alkaline batteries)

* Measured value by the standard of EIAJ

(Electronic Industries Association of Japan).

** Charging time varies depending on how the

rechargeable battery is used.

US Model

Canadian Model

AEP Model

UK Model

E Model

Chinese Model

D-EJ825/EJ925

Tourist Model

D-E888/E999

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM-3021EBG

Optical Pick-up Name DAX-21EG

Operating temperature

5°C - 35°C (41°F - 95°F)

Dimensions (w/h/d) (excluding projecting parts and controls)

Approx.

127.2 × 18.4 × 135.6 mm

⁄8 in.) (D-E888/EJ825)

⁄8 in.) (D-E999/EJ925)

“1” “2”

⁄8 × 3⁄4 × 5

Approx. 127.2 × 15.4 × 135.6 mm

⁄8 × 5⁄8 × 5

Mass (excluding accessories)

Approx. 175 g (6.2 oz) (D-E888/EJ825) Approx. 155 g (5.5 oz) (D-E999/EJ925) AC power adaptor (1)

Headphones/earphones with remote control (1) Rechargeable batteries (2) Battery carrying case (2) Carrying case (1) External battery case (1) AC plug adaptor (1)*

* Supplied with Tourist model.

On AC power adaptor

• Use only the AC power adaptor supplied or recommended in “Accessories (supplied/ optional).” Do not use any other AC power adaptor. It may cause a malfunction.

Polarity of the plug

Design and specifications are subject to change without notice.

PORTABLE CD PLAYER

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

2. GENERAL ................................................................... 6

3. DISASSEMBLY ......................................................... 7

4. ELECTRICAL CHECKING .................................. 11

This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.

5. DIAGRAMS

5-1. Block Diagram – MAIN Section (1/2) – ........................ 15

5-2. Block Diagram – MAIN Section (2/2) – ........................ 17

5-3. Block Diagram – POWER SUPPLY Section – .............. 19

5-4. Printed Wiring Board – MAIN Board (Suffix-11) – ...... 21

5-5. Printed Wiring Board – MAIN Board (Suffix-12) – ...... 23

5-6. Schematic Diagram – MAIN Board – ............................ 25

5-7. IC Pin Function Description ........................................... 30

6. EXPLODED VIEWS ................................................ 32

7. ELECTRICAL PARTS LIST ............................... 35

Discrimination of MAIN board

– MAIN Board (Component Side) –

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during 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.

1-678-954-11

1-678-954-12

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMA TIC 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 PUBLISHED BY SONY.

– 2 –

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

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

Before Replacing the Optical Pick-Up Block

Please be sure to check thoroughly the parameters as par the “Optical 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: 0.4 to 0.6 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 operable.

• 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 screwdri ver having

a thin tip as shown in Fig.1.

3. Press the

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 4 times along with inward motion for the focus search.

u button.

S801

lever, detection

MAIN board

Fig. 1 Method to push the S801

– 3 –

SERVICE MODE

In the Service mode, this set can check the following.

1. Service Mode Setting Method

To set the Service mode, perform as follows.

1) Make sure that the Power is not turned on.

2) Check for the following states:

Open/close detection switch (S801)...... OFF

Solder bridge at TAP802 (OPEN) ......... OPEN

[ALVS] switch (S803) ........................... NORM

[HOLD] switch (S804) .......................... OFF

[G-PRO] switch (S805)......................... 1

3) Short the solder bridge at the TAP801 (TEST) on the Main board (see Fig. 2).

4) Turn the Power on.

– MAIN Board (Component side) –

TAP801

(TEST)

TAP802 (OPEN)

S801

(OPEN/CLOSE/ DETECT)

2. Operation in Service Mode

When the Service mode is set, the LCD on the remote commander displays the following.

Remote commander LCD display

Microcomputer version display

All lit

All off

Microcomputer version display

3.Operation of Buttons and Knobs in Service Mode

The following operation can be checked by operating the buttons and knobs on the set and remote commander.

u button on the set

•

Focus ON Tracking/Thread servo OFF

• x button on the set and remote commander

All servos (Focus/Tracking/Thread) OFF

• > / . buttons on the set and > / . knobs on remote

commander Optical pickup movement (outward or inward) Tracking/Thread servo OFF

[PLAYMODE] button on remote commander (CLV speed

•

becomes 1 to 4 times each time the button is pressed) Tracking/Thread servo ON

• [PRT/ENT] buttons on remote commander

Tracking gain up mode

• [VOL+] / [VOL--] buttons on the set and [VOL+] / [VOL--]

knobs on remote commander 2-step volume setting

• [SOUND] button on remote commander

Servo auto adjustment (In play mode, press this button before pressing the [PLAYMODE] button on remote commander)

VB025

888

%B025

Uncertain

BASS12

Fig. 2

4.Service Mode Releasing Method

To release the Service mode, perform as follows.

1) Turn the Power off.

2) Open the solder bridge at the TAP801 (TEST) on the Main board.

Note: Remove the solder completely.

– 4 –

5.Error Rate Check Display

The C1 Error Rate Check Display mode becomes active if the following operation is performed during the operation in the normal mode.

1) Make sure that the Power is not turned on.

2) Fix the open/close detection switch (S801) on the Main board with a tape so that the switch is turned on. Or, short the solder bridge at the TAP802 (OPEN) on the Main board (see Fig. 2 on page 4).

3) Turn the Power on, then set the CD to activate the Play mode.

4) Short the solder bridge at the TAP801 (TEST) on the Main board (see Fig. 2 on page 4).

5) Press the [DISPLAY] button on remote commander, and the C1 Error Rate Check Display mode becomes active, and the remote commander LCD displays the following. OK is displayed when the error rate is 0 to 99/7350, or NG is displayed when over 100/7350.

Remote commander LCD display (OK display)

00 00

---

Remote commander LCD display (NG display)

11 11

---

The remote commander LCD displays the following when no data is read such as in the skip mode.

Remote commander LCD display

---:--

---

Note: Press again the and the remote commander LCD displays the time counted down from total time of CD. Press once more the [DISPLAY] button on remote commander, and the remote commander LCD returns to the display of the music being played at present.

6) Turn the Power off.

7) Open the solder bridges at the TAP801 (TEST) and TAP802 (OPEN) on the Main board. Note: Remove the solder completely.

[DISPLAY] button on remote commander,

– 5 –

SECTION 2

GENERAL

This section is extracted from instruction manual.

Getting started

Locating the controls

For details, see pages in parentheses.

CD player (front)

CD player (inside)

q; Battery

compartment (pages 19)

qa G-PRO (G-

PROTECTION) switch

(page 13)

1 EXT BATT (external battery)/

DC IN 4.5 V (external power input) jack (pages 7, 19, 21)

2 LINE OUT (OPTICAL) jack

(page 17)

3 VOL (volume) +/– buttons

(page 8)

4 ./> (AMS/search)

buttons (pages 8, 11, 12)

5 u (play/pause) button

(page 8)

6 x (stop) /CHG (charge) button

(pages 8, 16, 19)

7 i (headphones) jack

(page 7)

8 CHG (charge)/HOLD lamp

(pages 15, 19)

9 OPEN switch

(page 7)

CD player (rear)

qs AVLS switch

(page 15)

qd HOLD switch

(page 15)

Remote control

qf Display

(pages 9, 11 - 15)

qg Rotary control

N/>: play, AMS/search (pages 8, 11, 12) .: AMS/search (pages 8, 11, 12)

VOL +/–: Pull the control in the direction of the arrow, and then turn it toward + or –. (page 8)

qj Clip

qk DISPLAY

button (pages 13, 14)

ql PLAY MODE

button (pages 10 - 12, 16)

w; RPT (repeat)/ENT

(enter) button (pages 10 - 12)

qh x (stop) button

(pages 8, 16)

wa HOLD switch

(page 15)

ws i (headphones) jack

(page 7)

wd X (pause) button

(page 8)

wf SOUND button

(page 14)

Note

Use only the supplied remote control. You cannot operate this CD player with the remote control supplied with other CD players.

Getting started

Using the carrying case

You can carry your player and its battery case together using the supplied carrying case. Insert them into the proper places in the case as illustrated below

– 6 –

SECTION 3

DISASSEMBLY

• This set can be disassembled in the order shown below.

Set Cabinet (Upper) Section Cabinet (Upper) Sub Assy, “Lid Sub Assy, Upper” (E888/EJ825 Model)

Cabinet (Upper) Sub Assy, “Lid Sub Assy, Upper” (E999/EJ925 Model)

Main Board, Optical Pick-Up Section (CDM-3021EBG)

Setting The Battery Terminal Board (Relay) Lead Wire And Motor Lead Wires

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

CABINET (UPPER) SECTION

screw (B2)

Open the upper lid sub assy.

Note on installation cabinet (upper) section: When installing cabinet (upper) section, adjust the S805 and knob (AVLS).

five screws (B2)

claw

knob (AVLS)

spring (open)

three claws

cabinet (upper) sectio

two claws

S805

– 7 –

two screws (B2)

CABINET (UPPER) SUB ASSY “LID SUB ASSY, UPPER” (E888/EJ825 MODEL)

lid sub assy, upper

six tapping screws

2.5)

(1.7

cabinet (upper) sub assy

plate, fulcrum

Open the upper lid sub assy.

two step screws

CABINET (UPPER) SUB ASSY “LID SUB ASSY, UPPER” (E999/EJ925 MODEL)

lid sub assy, upper

cabinet (upper) sub assy

Open the upper lid sub assy.

– 8 –

two step screws

+ 18 hidden pages

Sony D-E888, D-E999, D-EJ825, D-EJ925 Service Manual

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

DISASSEMBLY