SERVICE MANUAL
SPECIFICATIONS
PORTABLE CD PLAYER
D-E990/EJ915
Photo: D-E990
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
D-EJ915
Tourist Model
D-E990
Model Name Using
NEW
Similar Mechanism
CD Mechanism Type
US, Canadian, AEP, UK
: CDM-3022EBG
E, Australian, Chinese, Tourist : CDM-3022EBA
Optical Pick-up Name
US, Canadian, AEP, UK
: DAX-22EG
E, Australian, Chinese, Tourist : DAX-22E
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength:
= 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 conversion
1-bit quartz time-axis control
Frequency response
20 - 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 kilohms
Recommended load impedance over 10
kilohms
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 ohms
(Approx. 0.15 mW + Approx. 0.15 mW
at 16 ohms)*
*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 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):
US/Canadian model: 120 V, 60 Hz
AEP/E13 model: 220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
Australian model: 240 V, 50 Hz
Tourist/E33 model: 100 - 240 V, 50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Korean model: 220 V, 60 Hz
Chinese model: 220 V, 50 Hz
· Sony DCC-E245 car battery cord for use on
car battery: 4.5 V DC
Supplied accessories
(When you use the CD player on a flat and stable
surface.)
Playing time varies depending on how the CD
player is used.
Two NH-14WM
23 (US/Canadian/AEP/UK model)
25 (E/Australian/Chinese/
Tourist model)
40 (E/Australian/Chinese/
Tourist model)
62 (E/Australian/Chinese/
Tourist model)
(charged for
about 4 hours**)
Battery case (two
37 (US/Canadian/AEP/UK model)
alkaline batteries)
Rechargeable batteries 57 (US/Canadian/AEP/UK model)
NH-14WM and 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.
Operating temperature
5
°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding
Battery life* (approx hours)
projecting parts and controls)
Approx. 127.2
× 19 × 130.1 mm
(5 1/8
× 3/4 × 5 1/8 in.)
Mass (excluding rechargeable
batteries)
Approx. 167.5 g (6.0 oz)
Design and specifications are subject to change
without notice.
AC 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
·
Abbreviation
E13: 220 - 230 V AC area in E model
E33: 100 - 240 V AC area in E model
Ver 1.1 2000. 02
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS 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 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 CHECKING .................................. 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.
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
· When disconnecting the AC power adaptor
from the AC outlet, grasp the adaptor
itself. Do not pull it by the cord.
· Do not touch the AC power adaptor with
wet hands.
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.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
BEFORE 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 0.55 Vp-p
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
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 checking method for the laser diode is 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 screwdriver hav-
ing a thin tip as shown in Fig.1.
3. Press the u button.
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
detection lever
MAIN board
S801
4
4
Getting started
Locating the Controls
For details, see pages in parentheses.
CD player (front)
CD player(inside)
qa
x (stop) /CHG (charge)
button
(pages 7, 14, 17)
q;
u (play/pause)
button
(page 7, 11)
9 i/REMOTE jack
(page 6)
7 AVLS switch (rear)
(page 13)
1 EXTBATT (external battery)/
DC IN 4.5 V (external power
input) jack (pages 6, 17, 18)
4 VOLUME +/
buttons
(page 7)
2 LINE OUT (OPTICAL)
jack
(page 15)
3 HOLD switch
(page 14)
6 CHG (charge)/
HOLD lamp
(pages 14, 17)
5 OPEN switch
(pages 6)
8
./>
(AMS/search)
buttons
(pages 7, 10, 11)
qs Battery compartment
(pages 17)
5
Remote control
Note
Use only the supplied remote control. You cannot
operate this CD player with the remote control
supplied with other CD players.
qf
x (stop) button
(pages 7, 14)
(Front)
ql P (play) MODE button
(pages 9 - 11)
qh Display
(pages 8, 10 - 14)
wd DISPLAY button
(page 12)
ws SOUND button
(page 13)
qg Jog lever
u: play/pause (pages 7,11)
./>: AMS/search
(pages 7, 10, 11)
qj LIGHT button
Press to illuminate the
display on the remote
control for about 5 seconds
when using the player on
the rechargeable batteries
or alkaline batteries.
w; RPT (repeat)/ENT
(enter) button
(pages 9 - 11)
(Rear)
qk VOLUME +/
tab (page 7)
qd HOLDswitch
(page 14)
wa Clip
You can turn and
change the angle of the
clip.
Getting
started
20
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
.
SECTION 2
GENERAL
This section is extracted from
instruction manual.
5
UPPER LID ASSY
CABINET (UPPER) SUB ASSY
Note: Follow the disassembly procedure in the numerical order given.
SECTION 3
DISASSEMBLY
tweezers
1
two spacers
2
upper lid assy
3
reinforcement
Note: To remove or install these spacers,
you need to do it with force.
1
screw
(B2
× 5)
2
five screws
(B2
× 7)
5
two screws
(B2
× 3)
6
lug
bracket
L409
4
cabinet (upper) sub assy
3
claw
3
three claws
3
two claws