Sony DEJ-775 Service manual
D-EJ775
SERVICE MANUAL
Ver 1.2 2002.09
SPECIFICATIONS
Canadian Model
AEP Model
UK Model
E Model
Austr alian Model
Chinese Model
Tourist Model
Model Name Using Similar Mechanism D-EJ955
CD Mechanism Type CDM-3325ES
Optical Pick-up Name DAX-25E
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 v alue measured at a distance
of 200 mm from the objecti ve lens surface on
the optical pick-up block with 7 mm aperture.)
D-A conversion
1-bit quartz time-axis control
Frequency response
40 - 20 000 Hz
307)
Output (at 4.5 V input level)
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 customer s in France
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 ada ptor (DC IN 4.5 V jack):
Canadian and Taiwan models:
120 V, 60 Hz
+1–5
dB (measured by JEITA CP-
AEP and E13
220 - 230 V, 50/60 Hz
UK model: 230 - 240 V, 50 Hz
Australian model: 240 V, 50 Hz
Tourist, E33 and Korean models: 100 - 240 V,
50/60 Hz
Hong Kong model: 220 V, 50/60 Hz
Chinese model: 220 V, 50 Hz
Battery lif e* (approx. hours)
(When you use the CD player on a flat and stable
surface.)
Playing time va ries de pending on ho w the CD
player is used.
When using G-PROTECTION function
Two NC-WMAA 12 8
(charged for
about 3 hours**)
NH-WM2AA 22 17
(charged for
about 5 hours**)
Two Sony alkaline 41 29
batteries LR6(SG)
(produced in Japan)
* Measured value by the standard of JEITA (Japan
Electronics and Information Technology
Industries Association).
** Charging time va ries depending on how the
re chargeable battery is used.
models:
on off
Operating temperature
5°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (exc luding
projecting parts and controls)
Approx. 136.0 × 19.8 × 136.0 mm
(5 3⁄8 ×25⁄32 × 5 3⁄8 in.)
Mass (exc luding accessories)
Approx. 160 g (5.7 oz.)
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)
Headphones/earphones with remote control (1)
Rechargeable batteries (2)
Battery carrying case (1)
AC plug adaptor (1)*
1
*
Supplied with Tourist and E33 models
Design and specifications are subject to chang e
without notice.
• Abbreviation
E13: 220 - 230 V AC area in E model
E33: 100 - 240 V AC area in E model
1
9-873-592-03 Sony Corporation
2002I0500-1 Personal Audio Company
C 2002.09 Published by Sony Engineering Corporation
PORTABLE CD PLAYER
D-EJ775
TABLE OF CONTENTS
1. SERVICING NOTES............................................... 3
2. GENERAL ................................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow........................................................... 6
3-2. Lid Upper Sub Assy ........................................................ 6
3-3. Plate (Spring) .................................................................. 7
3-4. Cabinet (Upper) Sub Assy .............................................. 7
3-5. Main Board, Optical Pick-up Section
(CDM-3325ES) ............................................................... 8
4. ELECTRICAL ADJUSTMENTS......................... 9
5. DIAGRAMS
5-1. Block Diagram – Servo Section – ................................. 11
5-2. Block Diagram – AUDIO/KEY CONTROL/
POWER SUPPLY Section – ........................................... 12
5-3. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 13
5-4. Printed Wiring Boards – MAIN (Component Side)
(Suffix-11)/SUB Boards – .............................................. 14
5-5. Printed Wiring Board – MAIN Board
(Conductor Side) (Suffix-11) –....................................... 15
5-6. Schematic Diagram – MAIN (1/3)
(Suffix-11)/SUB Boards – .............................................. 16
5-7. Schematic Diagram – MAIN Board (2/3)
(Suffix-11) –.................................................................... 17
5-8. Schematic Diagram – MAIN Board (3/3)
(Suffix-11) –.................................................................... 18
5-9. Schematic Diagram – MAIN Board (1/3)
(Suffix-12)/SUB Boards – .............................................. 19
5-10. Schematic Diagram – MAIN Board (2/3)
(Suffix-12) –................................................................... 20
5-11. Schematic Diagram – MAIN Board (3/3)
(Suffix-12) –................................................................... 21
5-12. Printed Wiring Boards – MAIN (Component Side)
(Suffix-12)/SUB Boards – .............................................. 22
5-13. Printed Wiring Board – MAIN Board
(Conductor Side) (Suffix-12) –....................................... 23
5-14. Printed Wiring Board – MAIN Board
(Component Side) (Suffix-13) –..................................... 24
5-15. Printed Wiring Board –MAIN Board
(Conductor Side) (Suffix-13) –....................................... 25
5-16. Schematic Diagram – MAIN Board (1/3)
(Suffix-13) –.................................................................... 26
5-17. Schematic Diagram – MAIN Board (2/3)
(Suffix-13) –.................................................................... 27
5-18. Schematic Diagram – MAIN Board (3/3)
(Suffix-13) –.................................................................... 28
5-19. IC Pin Function Description ........................................... 30
6. EXPLODED VIEWS
6-1. Cabinet Section ............................................................... 32
6-2. Main Section ................................................................... 33
6-3. Optical Pick-up Section (CDM-3325ES)....................... 34
7. ELECTRICAL PARTS LIST ............................... 35
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
Notes on chip component replacement
•Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR 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 PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
2
SECTION 1
SERVICING NOTES
D-EJ775
MAIN BOARD IDENTIFICATION
– MAIN Board (Component Side) –
SUB Board
(MAIN Board suffix-11, -12 only)
1-683-934-11
1-683-934-12
1-683-934-13
– MAIN Board (Conductor Side) –
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 1 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 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 5
times along with inward motion for the focus search.
> N key.
ABOUT CD-Rs/CD-RWs
This CD player can play CD-Rs/CD-RWs recorded in the CD-D A
format*, but playback capability may vary depending on the quality of the disc and the condition of the recording device.
* CD-DA is the abbreviation for Compact Disc Dig ital Audio. It is
a recording standard used for the Audio CDs.
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.
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 objecti ve lens.
detection lever
detection lever
S801
MAIN board
Fig. 1 Method to push the S804
3
D-EJ775
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:
[HOLD] switch (S802) ..........................OFF
[SOUND] switch (S808) ....................... OFF
•
[G PROTECTION] switch (S803) .......ON
3) Short the solder bridge at the TAP801 (TEST) and TAP802
(OPEN) on the MAIN board (see Fig. 2).
4) Turn the power on.
– MAIN Board (Component Side) –
2. Operation in Service Mode
When the Service mode is set, the LCD on the remote commander
displays the microcomputer version display.
00
0052
R
microcomputer version
3. Operation of Buttons in Service Mode
The following operation can be checked by operating the buttons
on the set and remote commander.
N> / . keys on the set or remote commander
•
Tracking/sled servo off
Focus search Spindle servo on
Note: Do not look directly at the laser beam from the optical pick-up.
• [VOL +] / [VOL --] keys on the set or remote commander
Tracking servo off
Optical pick-up movement (outward or inward)
Note: Do not move forcibly the optical pick-up exceeding the most-out-
side or most-inside track.
• x key on the set or remote commander
All servos (focus/tracking/sled) off
• [MENU] key on the set
Spindle speed change
Tracking/sled servo on
• [SOUND] key on the sed
Servo auto adjustment
TAP801 (TEST) TAP802 (OPEN)
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) and TAP802
(OPEN) on the MAIN board.
Note: Remove the solder completely.
4
SECTION 2
GENERAL
D-EJ775
This section is extracted from
instruction manual.
Getting started
Locating the controls
For details, see pages in parentheses.
CD player (front)
1 . (AMS/
search)•> (AMS/
search) N* (play)
button
2CHARGE/x (stop)
button•CHARGE
lamp
3 VOL (volume) +*/ –
button
4 SOUND•MENU
utton
b
CD player (inside)
5 OPEN switch
6 DC IN 4.5 V (external
power input) jack
7 HOLD switch
8 i (headphones)
jack
9 Battery compartment
Remote control
qa Display
qs HOLD switch
(rear)
qd x (stop) b utton
qf VOL (volume)
+/– buttons
Note
Use only the supplied remote control. You cannot operate this CD player with the remote control supplied with
other CD players.
qg N (play)>
(AMS/sear ch) button
qh .(AMS/search)
button
qj Clip
Getting started
*The button has a tactile dot.
0 G-PR OTECTION
switch
5
D-EJ775
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
3-2. LID UPPER SUB ASSY
3-3. PLATE (SPRING)
3-4. CABINET (UPPER) SUB ASSY
3-5. MAIN BOARD,
SECTION 3
DISASSEMBLY
SET
(Page 6)
(Page 7)
(Page 7)
OPTICAL PICK-UP SECTION (CDM-3325ES)
(Page 8)
Note: Follow the disassembly procedure in the numerical order given.
3-2. LID UPPER SUB ASSY
2
3
lid upper sub assy
lid upper sub assy
boss
cabinet front sub assy
boss
1
6
3-3. PLATE (SPRING)
4
plate (spring)
3
spring (full open. B)
two screws
1
2
3
spring (full open. A)
D-EJ775
3-4. CABINET (UPPER) SUB ASSY
2
eight screws (B2)
4
cabinet (upper) sub assy
1
Open battery case lid.
3
claw
knob (GPRO)
Note : On installation of cabinet (upper) sub assy,
adjust the position of two switch (S803)
and knobs (GPRO).
3
claw
3
S803
claw
7
D-EJ775
3-5. MAIN BOARD OPTICAL PICK-UP SECTION (CDM-3325ES)
4
connector (CN503)
terminal board
(relay), battery
8
Remove two solders.
7
optical pick-up section
(CDM-3325ES)
4
connector (CN502)
6
insulator
5
flexible board
(CN501)
9
cushion
main board: suffix -11, -12
3
cushion
1
screw (B) (1.4)
qa
S802
0
main board
SUB board
6
insulator
6
insulator
main board: suffix -11, -12
Note : On installation of main board,
adjust the position of switch
(S802) and knob (hold).
knob (hold)
2
Hold up both the main board and the optical
pick-up section at once, and remove them
form the cabinet (lower) sub assy.
Note : Handle the flexible board with care when
you hold up the optical pick-up section.
8
SECTION 4
p
oscilloscope
(DC range)
+
–
MAIN board
TJ603 (MON1)
TJ610 (VBIAS)
V
ELECTRICAL ADJUSTMENTS
D-EJ775
The CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
PRECAUTIONS FOR ADJUSTMENT
1. Perform adjustment in the order given.
2. Use YEDS-18 disc (P art No.: 3-702-101-01) unless otherwise
indicated.
3. Power supply voltage requirement: DC4.5 V in DC IN jack.
(J401)
VOLUME : Minimum
[SOUND] switch : OFF
[HOLD] switch : OFF
•
[G PROTECTION] switch : ON
FOCUS BIAS CHECK
Condition:
• Hold the set in horizontal state.
Connection:
MAIN board
TJ503 (RF)
TJ501 (AGND)
Procedure:
1. Connect the oscilloscope to the test points TJ503 (RF) and
TJ501 (AGND) on the MAIN board.
2. Set a disc. (YEDS-18)
3. Press the N> key on the remote commander.
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.
2 k
Ω
oscilloscope
(AC range)
+
–
EF ALIGNMENT ADJUSTMENT
(for microcomputer version 052 or 057 only)
Connection:
Procedure:
1. Short the solder bridge of T AP802 (OPEN) on the MAIN board.
2. Connect the TP514 (OPGSW) and TJ405 (AVDD) on the
MAIN board using a lead wire.
3. Connect the TJ805 (AD SEL) and TJ401 (MAINGND) on the
MAIN board using a lead wire.
4. Turn on the power (DC 4.5V).
5. Turn on the [HOLD] switch.
6. Press the N> key on the remote commander, and check
that “0088” is displayed on the remote commander.
7. Press the . key on the remote commander, and check that
“0087” is displayed on the remote commander.
8. Remove a lead wire from the TJ805 (AD SEL) and TJ401
(MAIN GND) on the MAIN board. At this time, check that
“00” is displayed on the remote commander.
9. Connect the oscilloscope to the TJ603 (MON1) and TJ610
(VBIAS) on the MAIN board.
10. Adjust the SUB board, RV1 (MAIN board suffix-11, -12) or
MAIN board, RV601 (MAIN boar d suffix-13) so that the v oltage at part A of the oscilloscope is ±10mV.
If “no disc” is displayed on the remote commander, press the
N> key on the remote commander and make readjust-
ment.
A
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 1 Vp-
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.
Connection and Checking Location: MAIN Board
(See page 10)
0 mV
A
0 mV
Connection and Adjustment Location: MAIN/SUB Boards
±
10 m
(See page 10)
9
D-EJ775
Connecting and Checking/Adjustment Location:
– MAIN (Conducter Side)/SUB Boards –
(MAIN Board suffix-11, -12 only)
RV601
EF Alignment
Adjustment
(MAIN Board suffix-13 only)
RV1
EF Alignment
Adjustment
(MAIN Board suffix-11, -12 only)
TAP802 (OPEN)
– MAIN Board (Conductor Side) –
TJ405 (AVDD)
SUB Board
TJ610 (VBIAS)
TP514 (OPGSW)
CN501
(AGND)
IC406
TJ501
IC601
IC401
TJ401
(MAINGND)
TJ805 (AD SEL)
TJ603 (MON1)
IC801
TJ503 (RF)
Remark: Only microcomputer version 052 or 057 MAIN board having
SUB board for EF Alignment Adjustment.
10
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – SERVO Section –
(SUFFIX-11, -12) (SUFFIX-13)
DETECTOR
VCC
OPTICAL PICK-UP BLOCK
LASER DIODE
(FOCUS)
2-AXIS
DEVICE
(TRACKING)
M902
(SPINDLE)
V
U
W
A
B
RF
E
F
DAX-25E
PD LD
L503
L502
L501
RF
OPSTB
OPGSW
A
B
E
F
AVDD 2V
L601
AUTOMATIC POWER
CONTROL
Q601
IC401 (1/2) (SUFFIX-11) IC401 (1/2) (SUFFIX-12) IC401 (1/2) (SUFFIX-13)
M901
M
(SLED)
IC406 (SUFFIX-11) IC406 (SUFFIX-12) IC406 (SUFFIX-13)
UI
19
18
17
20
11
13
15
VI
WI
COM
U
V
W
+
+
+
PREDRIVER
FOCUS/TRACKING COIL DRIVER,
FO1
33
RO1
35
FO3
42
RO3
44
FO2
37
RO2
39
SPINDLE MOTOR DRIVER
RV1
EL
ALIGNMENT
SLED MOTOR DRIVER
CONTROLLER,
H BRIDGE DRIVER
CONTROL
CIRCUIT
D-EJ775
RF AMP,
AVDD 2V
B+
F1
29
R1
30
F3
52
R3
51
F2
31
F2
32
CPU
INTERFACE
RV601
EL
ALIGNMENT
PWM
SYNC
APWM
XBRAK
FG
DATA
CLK
XLTCH
24
1
23
2
3
7
9
8
AVDD 2V
B+
D408
AVDD 2V
B+
(SUFFIX-11, -12)
D406
9
8
13
6
7
3
2
79
78
75
74
77
76
71
73
72
72
35
78
79
A
B
RFI
E
F
PD
LD
SDOP
SDON
FDOP
FDON
TDOP
TDON
CLKDRV
CLVOP
CLVON
FG
XDRVLT
XOPSTBY
OPG4
APC
IC601 (SUFFIX-11) IC601 (SUFFIX-12) IC601 (SUFFIX-13)
SDSY
43
SCOR
IC801 (1/2) (SUFFIX-11) IC801 (1/2) (SUFFIX-12) IC801 (1/2) (SUFFIX-13)
64
13
DIGITAL SIGNAL PROCESSOR,
DIGITAL SERVO PROCESSOR,
CLVON
XOUT
XIN
RFI
CLVOP
SDOUT
CLK4M
SCLK
SDSY
SDIN
E
F
B
A
SDOP
SDON
FDOP
FDON
TDOP
TDON
SDIN
DEFECT DEFECT
SYSTEM CONTROLLER
D-RAM CONTROLLER
SIGNAL
PROCESSOR
BLOCK
SCLK
SCK
MSDTI
CLK4M
2
SDOUT
50534749
16 181711
MSDTO
SERVO
BLOCK
XIN
52
7
XBUSY XBUSY
MEMORY
CONTROLLER,
BUS BOOST
BLOCK
48
70
15
71
GFS GFS
R/XW SRW
68
70
ESPLT YMLD
LDACO
RDACO
D0 D3
A0 A9
XRAS
XWE
XCAS
XIN
XOUT
EFM/YMLG
VCHK
XRST
FOK
45
77
POFF XPDWN
XRST
31
29
D0 D3
84, 85, 87, 88
A0 A9
91 100
90
89
83
37
38
67
5
44
65
6FOK
76
D0 D3A0 A9
1, 2, 24, 25
5, 9 12, 14 18
4
XRAS
3
XWE
23
XCAS
X601
16.934MHz
SWITCHING
Q602, 603
(SUFFIX-13)
(SUFFIX-11, -12)
LDACO,
RDACO
D-RAM
IC603 (SUFFIX-11)
IC603 (SUFFIX-12)
IC603 (SUFFIX-13)
VCC1 2.2V
B+
AVDD 2V
B+
(Page 12)
A
BATMNT
B
• SIGNAL PATH
: CD PLAY
(Page 12)
VG
21
VG B+
XRST
6
SYNC
SCK
SDTO
C
D
E
(Page 12)
(Page 12)
(Page 12)
1111
D-EJ775
5-2. BLOCK DIAGRAM – AUDIO/KEY CONTROL/POWER SUPPLY Section –
IC302 (SUFFIX-11) IC302 (SUFFIX-12) IC302 (SUFFIX-13)
LDACO
S801
OPEN
TAP806
(OPEN)
VCPU 2V
B+
VCPU 2V
B+
RDACO
SYSTEM CONTROLLER
23
AD KEY 2
25
WP/AD KEY 1
40
HOLD
28
WP/XOPEN
38
CMPON
75
LEDDISP
AD SEL
21
AMUTE
HPSW
BEEP
TSB
WP/AD RMKEY
XWAKEUP
XRESET
XPOWLT
AD BATMNT
AD CHGMNT
74
12
30
31
26
66
8
SYSTEM CONTROLLER
OPTICAL PICK-UP BLOCK,
14
VG
SPINDLE MOTOR
DRIVER (IC406)
B+
VCPU 2V
(IC801) B+
VCC1 2.2V
APC CIRCUIT,
DSP (IC601),
D-RAM (IC603)
B+
AVDD 2V
DSP (IC601) B+
DVDD 2V
DSP (IC601) B+
D801
+2.1 REGULATOR
IC402
IC402 (SUFFIX-11)
IC402 (SUFFIX-12)
IC402 (SUFFIX-13)
IC401(2/2) (SUFFIX-11) IC401(2/2) (SUFFIX-12) IC401(2/2) (SUFFIX-13)
(Page 11)
(Page 11)
(Page 11)
(Page 11)
A
IC801(2/2) (SUFFIX-11) IC801(2/2) (SUFFIX-12) IC801(2/2) (SUFFIX-13)
S808 − 811
S805 − 807
SDTO
E
SYNC
C
SCK
D
S802
HOLD
OFF
HOLD
VCPU 2V
B+
S803
G-PROTECTION
ON
OFF
D803
CHARGE
TAP801
(TEST)
HEADPHONE AMP
LIN
14
RIN
15
MUTE
PWRSW
BEEP
POWER CONTROL
DATA
SYNC
CLOCK
VG
VCPU
VCC1-OUT
LATCH
VMMNT
CHGMNT
MUTE SW
PW SW
BEEP
19
20
17
27
24
26
3 4
16
14
28
5324
5422
LOUT
ROUT
WAKEUP
RESET
LG
VIN
VCC0
VCC1-IN
STNG
BATM1
DET
CHGB
REGB
DC IN
J301
i
8
6
• SIGNAL PATH
: CD PLAY
VCPU 2V
B+
L802
25
23
6
10
15
13
56
63
1
62
2
WAKE UP SWITCH
L401
Q402
VCPU 2V
4
3
TSB
2
RMKEY
GND
1
CHARGE
CONTROL
Q405
B+ SWITCH
Q403
REGULATOR
IC404
IC404 (SUFFIX-11)
IC404 (SUFFIX-12)
IC404 (SUFFIX-13)
RESET SIGNAL
GENERATOR
IC405
IC405 (SUFFIX-11)
IC405 (SUFFIX-12)
IC405 (SUFFIX-13)
B+ SWITCH
Q401
CHARGE ON
SWITCH
Q404
COIL/MOTOR DRIVER,
(IC401, 406)
HEADPHONE AMP
D404
B+ SWITCH
Q407
(IC302) B+
L407
CHARGE
L406
RECHARGEABLE BATTERY
NC-WMAA
2PCS. 2.4V
OR
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
2PCS. 3V
J401
DC IN 4.5V
+
–
(Page 11)
WP/AD DCINMNT
BATMNT
B
27
1212
D-EJ775
p
p
p
5-3. 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
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
•Abbreviation
FR : French model
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/
specified.
•%: indicates tolerance.
• C : panel designation.
Note:
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part
number specified.
• A : B+ Line.
•Total current is measured with CD installed.
•Power voltage is dc 4.5 V and f ed with regulated dc power
supply from DC IN 4.5V jack (J401).
•Voltages and waveforms are dc with respect to ground in
CD play mode.
no mark : CD PLAY
•Voltages are taken with a V OM (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
•Abbreviation
FR : French model
4
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.
W or less unless otherwise
•Waveforms
1 IC406 1 (SYNC)
5.7 µs
2 IC406 9 (CLK)
20 ms
3 IC601 qd (RFI)
2.1 Vp-
84 Vp-p
6 IC601 ua (CLKDRV)
2.1 Vp-
5.7 µs
7 IC401 wh (CLOCK)
84 Vp-p
20 ms
8 IC801 2 (XIN)
4 IC601 ek (XOUT)
59.1 ns
5 IC601 td (CLK4M)
0.4 to 1 Vp-p
2.2 Vp-
1 Vp-p
236 ns
9 IC801 qk (SCK)
84 Vp-p
20 ms
1 Vp-p
1313
236 ns
D-EJ775
5-4. PRINTED WIRING BOARDS – MAIN (Component Side) (Suffix-11)/SUB Boards –
1 2 3 4 5 6 7 8 9 10 11
A
MAIN BOARD
D803
CHARGE
S807
CHARGE
(COMPONENT SIDE)
4
V
W
U
M902
(SPINDLE)
B
1
1
4
9
C
S806
S805
13
14
SUB BOARD
11
(11)
1-685-123-
• Component Side
Ref. No. Location
D301 F-3
D303 E-3
D304 F-4
D404 F-8
D405 E-8
D406 B-2
D408 C-2
D409 E-8
D410 D-8
D411 F-8
D803 B-1
IC302 E-5
IC404 G-8
IC603 C-2
Q403 G-8
Q404 E-8
Q405 G-8
Q407 F-8
Q601 E-4
D
E
F
S810
−
VOL
S809
+
S808
SOUND
18
22
26
S811
MENU
5
IC603
1
RED
BLK
BLU
M901
(SLED)
1
M
2
2
1
RECHARGEABLE BATTERY
NC-WMAA
2PCS. 2.4V
OR
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
2PCS. 3V
IC302
(TEST)
BT400
4
BT402
1-683-934-
11
(11)
G
1
J401
DC IN 4.5V
+
J301
OPEN
(OPEN)
G-PROTECTION
OFF
ON
3
1
C
5
4
IC404
1414
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