Sony DEJ-1000 Service manual
D-EJ1000
SERVICE MANUAL
Ver 1.1 2002. 04
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 conversion
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 rms 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 mW
at 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
+1–2
dB (measured by JEITA CP-
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.
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
Tourist Model
Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM-3325ES
Optical Pick-up Name DAX-25E
When using G-PROTECTION
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
3
(5 × 5
⁄8 × 9⁄16 in.)
Mass (excluding accessories)
Approx. 129 g (4.6 oz)
“1” “2”
9-873-395-02
2002D1600-1
© 2002.04
Design and specifications are subject to change
without notice.
PORTABLE CD PLAYER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
D-EJ1000
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
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.
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.
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.
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
ATTENTION AU COMPOSANT AYANT RAPPORT
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.
À LA SÉCURITÉ!
2
SECTION 1
S804
detection lever
detection lever
MAIN board
SERVICING NOTE
D-EJ1000
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 breakdo wn 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 pickup 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 ha ving 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.
Fig. 1 Method to push the S804
3
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.
– MAIN Board (Component side) –
SL807
(TEST)
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
Microcomputer
version display
All lit
Service Mode
3. Operations by buttons or Rotary control
in the Service Mode.
The following confirma tions 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.
VC077
888
DDDD
BASS12
SL806
(OPEN)
S804
(OPEN/CLOSE DETECT)
(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
0000
PLAY mode
4
D-EJ1000
• x button (the CD player) or x button (the remote control)
All servos (Focus/Tracking/Sled) off
• > B / . b utton (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
Up0000
(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
010001
(1 time)
5) C1 error rate display mode is active by pressing [DISPLAY] b utton
(the remote control).
The remote control LCD displays the following message.
Remote control LCD display
Er****
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] b utton (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
Value of ****
0000 – 0099 : OK
0100 – : NG
010001
040004
7) C1 error rate is displayed on the LCD by pressing [DISPLAY]
button (the remote control).
040004
(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
(4 times)
0000
3) Set the automatic serv o adjustment by pressing SOUND button
(the remote control).
4) Press [PLAY MODE] button (the remote control).
Remote control LCD display
Remote control LCD display
Er****
8) Turn off the power.
9) Open the solder land SL807 (TEST) on the MAIN board.
Note : The solder should be removed clean.
010001
5
D-EJ1000
Locating the controls
SECTION 2
GENERAL
This section is extracted
from instruction manual.
CD player (front)
1 EXT BATT (external battery)/
DC IN 4.5 V (external power
input) jack
2 LINE OUT (OPTICAL) jack
3 VOL (volume) +*/– buttons
4 x (stop) /CHARGE button•
CHARGE lamp
5 .(AMS/search)•> N*
(AMS/search/play) buttons
6 i (headphones) jack
7 OPEN switch
8 Terminals for the charging stand
CD player (inside)
9 AVLS switch
q; G-PROTECTION
switch
qa Battery
compartment
*The button has a raised dot to help you operate the CD player by touch.
CD player (rear)
qs HOLD switch
Remote control
qd Display
qf Rotary control
N/>: play, AMS/search
.: AMS/search
VOL +/–: Pull the control in the direction of the
arrow, and then turn it toward + or –.
qh Clip
qj DISPLAY
button
qk PLAY MODE
button
ql RPT (repeat)/ENT
(enter) button
qg x (stop) button
w; HOLD switch
wa i (headphones) jack
ws X (pause) button
wd SOUND button
Note
Use only the supplied remote control. You cannot
operate this CD player with the remote control
supplied with other CD players.
6
SECTION 3
3
guide (L)
1
screw (M1.4)
2
screw (M1.4)
5
upper lid block assy
4
guide (R)
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
Set
Upper lid section Cabinet (upper) section MAIN board, Optical pick-up section (CDM-3325ES)
Note : Follow the disassembly procedure in the numerical order given.
3-1. UPPER LID SECTION
D-EJ1000
7
D-EJ1000
)
S
3-2. CABINET (UPPER) SECTION
3
two claws
2
screw (B2)
4
cabinet (upper) block assy
1
seven screws (B2)
5
3
three claws
3
claw
battery terminal board (relay
6
spring (upper lid)
3-3. MAIN BOARD, OPTICAL PICK-UP SECTION (CDM-3325ES)
The cautions at the time of attachment
stopper cusion
2
connector (4P)
(CN501)
3
connector (2P)
(CN502)
6
MAIN board
1
two stopper cusions
5
CDM-3325E
4
flexible board
(CN503)
8
SECTION 4
490 mVp-p
1
IC601 if RFAC
100mV/DIV, 400ns/DIV
2
IC601 rk XTAO
1V/DIV, 20ns/DIV
3
IC801 2 XIN
1V/DIV, 100ns/DIV
4
IC801 qk MSCK-O
1V/DIV, 400ns/DIV
59ns
236ns
945ns
2.4 Vp-p
2.5 Vp-p
2 Vp-p
ELECTRICAL CHECKING
D-EJ1000
SECTION 5
DIAGRAMS
The CD section adjustments are done automatically in this set.
In case of operation check, confirm that RF level.
Precautions for Check
1. Perform check in the order given.
2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise
indicated.
3. Power supply voltage requirement : DC4.5 V in DC IN jack.
VOLUME button : Minimum
AVLS switch : NORM
HOLD switch : OFF
G-PROTECTION switch : 1
Checking Location:
– MAIN board (Component side) –
CN503
IC601
(J401)
TP418 (GND)
TP601 (RF)
RF Level Check
Condition:
• Hold the set in horizontal state.
Connection:
MAIN board
TP601 (RF)
TP418 (GND)
2 k
Ω
oscilloscope
(AC range)
+
–
Procedure:
1. Connect the oscilloscope to the test points TP601 (RF) and
TP418 (GND) on the MAIN board.
2. Set a disc. (YEDS-18)
3. Press the > B button.
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
RF level
0.4 to 0.6 Vp-p
To watch the eye pattern, set the oscilloscope to AC range and
increase the vertical sensitivity of the oscilloscope for easy watching.
5. Stop revolving of the disc motor by pressing the x button.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side B) the parts face are indicated.
• MAIN board is multi-layer printed board. However, the patterns of intermediate-layer have not been included in the diagram.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or
less are not indicated except for electrolytics and tantalums.
• All resistors are in Ω and 1/
• % : indicates tolerance.
• C : panel designation.
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0 sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
• A : B+ Line.
• Total current is measured with CD installed.
• Power voltage is dc 4.5 V and fed with regulated dc power supply
from DC IN jack (J401).
• Voltages and waveforms are dc with respect to ground in playback
mode.
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J : CD PLAY (ANALOG OUT)
c : CD PLAY (OPTICAL OUT)
• WAVEFORMS • IC BLOCK DIAGRAM
IC404 TB2127FN (EL)
1
SYNC
XBRK
DGND
XRST
DATA
XLAT
CLK
VDU
PGUV
2
3
FG
VC
4
5
6
7
8
9
10
11
U
12
VC
100k
INTERFACE
PRE-DRIVER
4
W or less unless otherwise specified.
24
PWM
CONTROL
+
-
TRIANGULAR
WAVE
GENERATING
-
+
-
+
-
+
47k
47k
47k
23
APWM
22
AGND
21
VG
20
COM
UI
19
18
VI
17
WI
16
PGW
15
W
14
VDVW
13
V
99
D-EJ1000
5-1. BLOCK DIAGRAM – MAIN (1/2) SECTION –
DETECTOR
PD
A
LD
B
VG
C
• SIGNAL PATH
A
B
RF
E
F
VCC
OPTICAL PICK-UP BLOCK
DAX-25E
LASER DIODE
PD
(FOCUS)
2-AXIS
DEVICE
(TRACKING)
SPINDLE
MOTOR
V
U
W
: CD PLAY (ANALOG OUT)
: CD PLAY (OPTICAL OUT)
A
B
RF
E
F
VCPU
OPGSW
OPSTB
LD
SLED
M
MOTOR
U1
19
V1
18
W1
17
COM
20
U
11
V
13
W
15
VG
21
+
+
+
PREDRIVER
IC403 (1/2)
FOCUS/TRACKING COIL DRIVER
SLED MOTOR DRIVER
FO2
34
RO2
32
FO1
38
36
26
24
CONTROLLER,
RO1
H BRIDGE DRIVER
FO4
RO4
IC404
SPINDLE MOTOR DRIVER
CONTROL
CIRCUIT
RI2
RI1
RI4
IC601
RF AMP,
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO PROCESSOR,
D-RAM CONTROLLER
40
HOLD
WDCK
WFCK
MDS
XTAO
XTAI
RFAC
MDP
XSOE
SENS
R4M
XLAT
CLOK
SCOR
SDTO
RFDC
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
E
F
B
A
PROCESSOR
SDTO
161415181711
MSDTO
28
SL806
(OPEN)
SIGNAL
BLOCK
SENS
CLOK
XLAT
232021
XLAT
MSCK
MSDTI
CLOSE
(OPEN/CLOSE DETECT)
DIGITAL
OUT
MEMORY
CONTROLLER,
BUS BOOST
BLOCK
LPF
SERVO
BLOCK
R4M
XSOE
WDCK
32 65
2422
26
2
12
XIN
XSOE
GRSCOR
SYSTEM CONTROLLER
S804
FOK
IC801 (1/3)
FOK
9
FOKI
DOUT
62
D0-D3
4, 3, 6, 5
A0-A10
116 – 113, 17 – 15, 13 – 11, 117
XRAS
1
XWE
2
XCAS
9
XTAI
47
XTAO
48
AOUT1
51
AOUT2
56
HPL
43
HPR
44
LRMU
61
XRST
28
SYSM
25
13
AMUTE
D0 – D3A0 – A10
2, 3, 24, 25
9 – 12, 15 – 19, 21, 8
5
XRAS
4
XWE
23
XCAS
X601
16.9MHz
IC602
D-RAM
DOUT
AOUTL,
AOUTR
HPL,
HPR
LRMU
XRST
SYNC
MSCK
MSDTO
G
H
K
I
J
D
E
F
A
92
B
91
RFDC
88
RFAC
84
E
89
F
90
FI2
17
18
FI1
40
41
FI4
21
22
SYNC
1
CPU
INTERFACE
XRST
6
XRST
PWM
APWM
XBRAK
DATA
CLK
XLTCH
24
23
2
FG
3
7
9
8
IC405
COMPARATOR
100
99
96
95
98
97
104
103
102
72
74
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
C176
MDP
MDS
FG I/FGSEL
XDRVLT
HG GUP
78
HG XSTB
77
>
S801
HOLD
HOLD
SCOR
27
SCOR
VCPU 2V
OFF
1010
Loading...