D-EJ1000
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Tourist Model
SERVICE MANUAL
PORTABLE CD PLAYER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-873-395-02
2002D1600-1
© 2002.04
SPECIFICATIONS
Ver 1.1 2002. 04
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM-3325ES
Optical Pick-up Name
DAX-25E
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 JEITA CP-
307)
Output (at 4.5 V input level)
Line output (stereo minijack)
Output level 0.7 V rms at 47 k
Recommended load impedance over 10 k
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16
(Approx. 0.5 mW + Approx. 0.5 mW
at 16
)*
*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 (A) rechargeable
batteries: 2.4 V DC
·Two LR6 (size AA) batteries: 3 V DC
·AC power adaptor (DC IN 4.5 V jack):
U/U2/CA2/E92/MX2/TW2/BR3 model:
120 V, 60 Hz
CED/CET/CEW/CEX/CE7/EE/EE1/E13/G5/
G6/G7/G8/BR1 model: 220 - 230 V, 50/60 Hz
CEK/3CE7 model: 230 - 240 V, 50 Hz
AU2 model: 240 V, 50 Hz
JE.W/E33/EA3/KR4 model: 100 - 240 V,
50/60 Hz
HK2 model: 220 V, 50/60 Hz
AR1/CN2 model: 220 V, 50 Hz
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
"1"
"2"
Two NH-14WM (A)
40
41
(charged for
about 5 hours**)
External battery case
66
71
(two alkaline batteries***)
Rechargeable batteries
108
115
NH-14WM (A) and
external battery case
(two alkaline batteries***)
*Measured value by the standard of JEITA (Japan
Electronics and Information Technology
Industries Association).
** Charging time varies depending on how the
rechargeable battery is used.
*** When using Sony alkaline batteries LR6 (SG)
(produced in Japan)
Operating temperature
5
°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding
projecting parts and controls)
Approx. 127.0
× 136.2 × 13.9 mm
(5
× 5 3/8 × 9/16 in.)
Mass (excluding accessories)
Approx. 129 g (4.6 oz)
Design and specifications are subject to change
without notice.
2
D-EJ1000
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.
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
radiation exposure.
On AC poweradaptor
· 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
TABLE OF CONTENTS
1. SERVICING NOTE ·························································· 3
2. GENERAL ·········································································· 6
3. DISASSEMBLY ································································ 7
4. ELECTRICAL CHECKING ··········································· 9
5. DIAGRAMS ········································································ 9
5-1. Block Diagram Main (1/2) Section ······················ 10
5-2. Block Diagram Main (2/2) Section ······················ 11
5-3. Block Diagram Power Supply Section ················· 12
5-4. Printed Wiring Board Main Board ······················· 13
5-5. Schematic Diagram Main Board (1/3) ················· 14
5-6. Schematic Diagram Main Board (2/3) ················· 15
5-7. Schematic Diagram Main Board (3/3) ················· 16
5-8. IC Pin Function Descriptions ······································ 17
6. EXPLODED VIEWS ······················································ 24
7. ELECTRICAL PARTS LIST ······································· 27
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
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
3
D-EJ1000
SECTION 1
SERVICING NOTE
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.
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 emission,
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 "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 yg pin
When checking FOK, remove the lead wire to disc motor.
· RF signal P-to-P value: 0.4 to 0.6 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 S804 with a screwdriver having a
thin tip as shown in Fig.1.
3. Press the > B 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 4
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 S804
S804
detection lever
detection lever
MAIN board
4
D-EJ1000
SERVICE MODE
The following confirmation can be performed when the Service
Mode is set.
1. How to set the Service Mode.
To set the Service Mode, the following method is available.
1) Confirm the set is not powered on.
2) Confirm the following settings.
OPEN/CLOSE detect switch (S804) ........ OFF
Solder Land (SL806) ................................ OPEN
[AVLS] switch (S802) ............................... NORM
[HOLD] switch (S801) ............................... OFF
[G-PROTECTION] switch (S803) .............. 1
3) Short the solder land SL807 (TEST) on the MAIN board.
4) Turn on the main power.
2. Operation when the Service Mode is set.
When the Service Mode becomes active, following messages are
displayed onthe remote control LCD.
Remote control LCD display
3. Operations by buttons or Rotary control
in the Service Mode.
The following confirmations can be performed by operating buttons
(on the CD player or the remote control) or Rotary control.
(Operation when a CD is not placed in the CD player)
·
> B / . button (the CD player) or B > / . Rotary
control (the remote control)
Motion of the optical pick-up (to outside or inside)
Tracking/Sled servo off
Note :
Be sure to keep your eyes apart from the direct emission
of the Laser diode.
Do not move the optical pick-up over outermost or
innermost.
(Operation when a CD is placed in the CD player)
Procedure :
1) Confirm the set is not powered on.
2) Keep short the solder land SL807 (TEST) on the MAIN board.
3) After turning on the power, set a CD in the player.
Then press X button (the remote control)
Remote control LCD display
MAIN Board (Component side)
SL807
(TEST)
SL806
(OPEN)
S804
(OPEN/CLOSE DETECT)
888
VC077
DDDD
BASS12
Microcomputer
version display
All lit
Service Mode
0000
PLAY mode
5
D-EJ1000
· x button (the CD player) or x button (the remote control)
All servos (Focus/Tracking/Sled) off
· > B / . button (the CD player) or B > / . Rotary
control (the remote control)
Motion of the optical pick-up (to outside or inside)
Tracking/Sled servo off
· [RPT/ENT] button (the remote control)
Tracking gain up mode
Remote control LCD display
(To cancel this mode, turn off the power. Then set in the Service
Mode again.)
· [VOL+/VOL-] button (the CD player) or VOL + / VOL - Rotary
control (the remote control)
Two step volume setting
· [PLAY MODE] button (the remote control)
Every pressing the button changes CLV (the rotation velocity) 1
to 4 times.
Tracking/Sled servo on
Remote control LCD display
(To cancel this mode, turn off the power. Then set in the Service
Mode again.)
·
SOUND button (the remote control)
Automatic adjustment of servo
4. Error rate display
C1 error rate is displayed when the following operation are
performed during playing in the Service Mode.
1) Cancel the other Service Mode by turning off the power.
2) After turning on the power, set a CD in the player.
Then press X button (the remote control).
Remote control LCD display
3) Set the automatic servo adjustment by pressing SOUND button
(the remote control).
4) Press [PLAY MODE] button (the remote control).
Remote control LCD display
Up0000
010001
040004
(1 time)
(4 times)
0000
010001
5) C1 error rate display mode is active by pressing [DISPLAY] button
(the remote control).
The remote control LCD displays the following message.
Remote control LCD display
Note :
Press [SOUND] button before pressing [PLAY MODE]
button during playing a CD.
By pressing in a wrong order, the value of Erxxxx
becomes very big.
6) When [DISPLAY] button (the remote control) is pressed,
[PLAY MODE] button is effective again. Then the value of CLV
(the rotation verocity) becomes changeable.
Remote control LCD display
7) C1 error rate is displayed on the LCD by pressing [DISPLAY]
button (the remote control).
Remote control LCD display
8) Turn off the power.
9) Open the solder land SL807 (TEST) on the MAIN board.
Note :
The solder should be removed clean.
Er****
Value of ****
0000 0099 : OK
0100
: NG
010001
040004
Er****