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D-FJ401/FJ405
US Model
D-FJ401/FJ405
Canadian Model
D-FJ401
AEP Model
UK Model
E Model
Chinese Model
D-FJ401/FJ405
Australian Model
D-FJ401
Tourist Model
D-FJ405
SERVICE MANUAL
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-874-015-02
2002K1600-1
© 2002.11
-- Continued on next page --
SPECIFICATIONS
Ver 1.1 2002. 11
Photo : US model
Model Name Using Similar Mechanism
D-SJ301
CD Mechanism Type
CDM-3125ER
Optical Pick-up Type
DAX-25E
CD player
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
Radio
Frequency range (STEP switch)
9 kHz step:
TV: 2 - 13 ch
WB (weather band): 1 - 7 ch
FM: 87.5 - 108.0 MHz
AM: 531 - 1 710 kHz
10 kHz step:
TV: 2 - 13 ch
WB (weather band): 1 - 7 ch
FM: 87.5 - 108.0 MHz
AM: 530 - 1 710 kHz
· US model
· European model
· CA2/AR1/E92/MX2 models
9 kHz step:
FM: 87.5 - 108.0 MHz
AM: 531 - 1 710 kHz
10 kHz step:
FM: 87.5 - 108.0 MHz
AM: 530 - 1 710 kHz
·AU2 model
9 kHz step:
FM: 87.5 - 108.0 MHz
AM: 531 - 1 602 kHz
10 kHz step:
FM: 87.5 - 108.0 MHz
AM: 530 - 1 710 kHz
· JE.W model
9 kHz step:
FM: 76.0 - 108.0 MHz
AM: 531 - 1 710 kHz
10 kHz step:
FM: 87.5 - 108.0 MHz
AM: 530 - 1 710 kHz
Frequency range
FM: 87.5 - 108.0 MHz
AM: 531 - 1 602 kHz
Antenna
TV/WB/FM:Headphones/earphones cord
antenna
AM: Built-in ferrite bar antenna
General
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-WMAA rechargeable
batteries: 2.4 V DC
· Sony NH-WM2AA rechargeable batteries:
2.4 V DC
·Two LR6 (size AA) batteries: 3 V DC
·AC power adaptor (DC IN 4.5 V jack):
U/CA2/E92/MX2/TW2 model:
120 V, 60 Hz
CED/CET/CEW/CEX/E13 model:
220 - 230 V, 50/60 Hz
CEK model: 230 - 240 V, 50 Hz
AU2 model: 240 V, 50 Hz
JE.W/EA3/KR4 model: 100 - 240 V,
50/60 Hz
HK2 model: 220 V, 50/60 Hz
AR1/CNA 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
RADIO
on
off
on
Two NC-WMAA
11
9
18
(charged for
about 3 hours**)
NH-WM2AA
24
21
40
(charged for
about 4 hours**)
Two Sony alkaline 47
37
70
batteries LR6 (SG)
(produced in Japan)
*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.
Operating temperature
5
°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding
projecting parts and controls)
Approx. 135.9
× 30.8 × 137.4 mm
(5 3/8
× 1 1/4 × 5 1/2 in.)
Mass (excluding accessories)
Approx. 210 g (7.5 oz.)
TV/WB/FM/AM PORTABLE CD PLAYER
US model
FM/AM PORTABLE CD PLAYER
Others


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2
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.
D-FJ401/FJ405
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.
This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label 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.
Laser component in this product is capable of emitting
radiation exceeding the limit for Class 1.
DANGER
Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.
· Abbreviation
D-FJ405
D-FJ401
Supplied accessories
For the area code of the location in which you
purchased the CD player, check the upper left side
of the bar code on the package.
AC power adaptor (1)
aa
Headphones/earphones with
a*1
a
remote control (1)
Headphones/earphones (1)
a*2
­
Rechargeable batteries (2)
­
a
Battery carrying case (1)
­
a
AC plug adaptor (1)
­
a*3
*1 Supplied with AR1 model only
*2 Not supplied with AR1 model
*3 Supplied with JE.W model only
For US customers
The AC power adaptor supplied is not intended to
be serviced. Should the AC power adaptor cease to
function in its intended manner, during the warranty
period, the adaptor should be returned to your
nearest Sony Service Center or Sony Authorized
Repair Center for replacement, or after warranty
period, it should be discarded.
AR1 : Argentine model
AU2 : Australian model
CA2 : Canadian model
CAN : Chinese model
CED : AEP model
CEK : UK model
CET : East European and Russian models
CEW : France model
CEX : France model
E13 : 220-230V AC area in E model
E92 : 120V AC area in E model
EA3 : Saudi Arabia model
HK2 : Hong Kong model
JE.W : Tourist model
KR4 : Korean model
MX2 : Mexican model
TW2 : Taiwan model
U
: US model
Design and specifications are subject to change
without notice.
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.


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3
D-FJ401/FJ405
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 30cm away
from the objective lens.
Before Replacing the Optical pick-up Block
Please be sure to check thoroughly the parameters as per the "Optical pick-
up Block Checking Procedure" (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 (TP610)
When checking FOK, remove the lead wire to disc motor.
· RF signal P-to-P value : 0.4 to 0.5Vp-p
SECTION 1
SERVICING NOTES
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser diode is
prohibited unless the upper panel 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. Push the S801 as shown in Fig. 1 .
3. Check the object lens for confirming normal emission of the laser diode.
If not emitting, there is a trouble in the automatic power control circuit or
the optical pick-up. During normal operation, the laser diode is turned
ON about 2.5 seconds for focus searching.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR
BASE UNIT
Fig.1 Method to push S801
TABLE OF CONTENTS
S801
1. SERVICING NOTES ······················································· 3
2. GENERAL ·········································································· 4
3. DISASSEMBLY ································································ 6
3-1. Cabinet (Middle) Sub Assy, Upper Lid Assy,
MAIN PC Board Assy ··················································· 6
3-2. MD Assy (CDM-3125ER) ············································ 6
3-3. Turn Table Motor Assy ·················································· 7
3-4. Sled Motor Assy, Optical Pick-up (DAX-25E) ············· 7
3-5. Switch Unit, Lid Cover ·················································· 7
4. ELECTRICAL ADJUSTMENTS ································· 8
5. DIAGRAMS ········································································ 9
5-1. Block Diagrams ··························································· 10
5-2. Printed Wiring Board ­ Side A ­ ································ 12
5-3. Printed Wiring Board ­ Side B ­ ································ 13
5-4. Schematic Diagram ­ Tuner Section (1/2) ­ ·············· 14
5-5. Schematic Diagram ­ Tuner Section (2/2) ­ ·············· 15
5-6. Schematic Diagram ­ CD Section (1/3) ­ ·················· 16
5-7. Schematic Diagram ­ CD Section (2/3) ­ ·················· 17
5-8. Schematic Diagram ­ CD Section (3/3) ­ ·················· 18
5-9. IC Pin Function Descriptions ······································ 19
5-10. IC Block Diagrams ······················································ 23
6. EXPLODED VIEWS ······················································ 24
6-1. Cabinet Upper Section ················································· 24
6-2. Cabinet Lower Section ················································ 25
6-3. Optical Pick-up Section (CDM-3125ER) ···················· 26
7. ELECTRICAL PARTS LIST ······································· 27


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4
D-FJ401/FJ405
SECTION 2
GENERAL
Locating The Controls
This section is extracted from
instruction manual.
CD player (front)
(Except US model)
6 i (headphones) jack
(page 6)
3 PLAY MODE·
TUNING ­ button
(pages 9 - 12, 15)
4 REPEAT/ENTER·
TUNING + button
(pages 9 - 12, 15)
5 SOUND button
(pages 17, 18)
qa DC IN 4.5 V (external power
input) jack
(pages 6, 21)
7 LINE OUT jack
(page 20)
1 1 - 5 buttons
(page 14)
8 PRESET ­ button
(page 15)
d
x (stop)/CHG (charge)·
RADIO OFF button
(pages 7, 12, 19, 21)
q;
N (play)/>* (AMS/search)
button (pages 6, 7, 11)
qs Strap holes
qd AM button
(pages 12, 15)
qf FM button
(pages 12, 15)
qg
. (AMS/search)
button (pages 7, 11)
qj
X (pause)·MEMORY
button
(pages 7, 14, 15)
qh PRESET +* button
(page 15)
qk HOLD switch
(page 18)
ql VOLUME** control
(page 6)
w; OPEN switch
(page 6)
2 Display
(pages 7, 10 - 14, 17, 18)
CD player (front)
(US model)
7 i (headphones) jack
(page 6)
4 PLAY MODE·
TUNING ­ button
(pages 9 - 12, 15)
5 REPEAT/ENTER·
TUNING + button
(pages 9 - 12, 15)
6 SOUND button
(pages 17, 18)
1 DC IN 4.5 V (external power input) jack
(pages 6, 21)
8 LINE OUT jack
(page 20)
2 1 - 3 buttons
(page 14)
9 PRESET ­ button
(page 15)
qd
x (stop)/CHG (charge)·
RADIO OFF button
(pages 7, 12, 19, 21)
qa
N (play)/>* (AMS/search)
button (pages 6, 7, 11)
qs Strap holes
qd AM button
(pages 12, 15)
qf FM button
(pages 12, 15)
qh TV button
(pages 12, 15)
qg WB (weather band)
button (pages 12, 15)
qj
. (AMS/search)
button (pages 7, 11)
ql
X (pause)·MEMORY
button
(pages 7, 14, 15)
qk PRESET + button
(page 15)
wd HOLD switch
(page 18)
wa VOLUME** control
(page 6)
ws OPEN switch
(page 6)
3 Display
(pages 7, 10 - 14, 17, 18)
*The button has a tactile dot.
** There is a tactile dot beside VOLUME to show the direction to turn up the volume.


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5
D-FJ401/FJ405
Remote control (D-FJ405 only)
wl
x (stop)·RADIO ON/
BAND·RADIO OFF***
button
(pages 7, 12)
wj VOL (volume)
control
(page 6)
ea HOLD switch
(page 18)
ed
N(play)/>
(AMS/search)·
PRESET + button
(pages 7, 11, 15)
wk
.(AMS/
search)·PRESET ­
button
(pages 7, 11, 15)
Note
Use only the supplied remote control. You cannot
operate this CD player with the remote control
supplied with other CD players.
CD player (inside)
wh Battery compartment
(page 21)
wf G-PROTECTION
switch
(page 17)
wd STEP switch
(page 16)
(Except European model)
wg LOCAL/DX switch
(page 13)
*** To turn off the radio, hold down until
the frequency indication disappears
from the display.