Sony DNE-240, DNE-241, DNE-241-CK Service manual
D-NE240/NE241/NE241CK
SERVICE MANUAL
Ver. 1.0 2006.10
Photo: D-NE240
SPECIFICATIONS
AEP Model
D-NE240/NE241
E Model
D-NE241/NE241CK
Model Name Using Similar Mechanism D-NE005
CD Mechanism Type CDM-3525A
System
Compact disc digital audio system
Laser diode properties
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.)
Power requirements
• Two LR6 (size AA) batteries: 1.5 V DC × 2
• AC power adaptor (DC IN 4.5 V jack):
100 - 240 V, 50/60 Hz
Battery life* (approx. hours)
(When the CD player is used on a flat and stable place.)
Playing time varies depending on how the CD player is used.
When using two Sony alkaline batteries LR6 (SG)
(produced in Japan)
G-PROTECTION G-on G-off
Audio CD 16 11
MP3 CD (Recorded at 128 kbps) 23 23
* Measured value by the standard of JEITA (Japan Electronics and
Information Technology Industries Association).
• The indicator sections of
battery power. One section does not always indicate one-fourth of
the battery power.
roughly show the remaining
Dimensions (w/h/d) (without projecting parts and controls)
Approx. 140.0 × 32.7 × 140.0 mm
Mass (excluding accessories)
Approx. 210 g
Operating temperature
5°C - 35°C
MPEG Layer-3 audio coding technology and patents
licensed from Fraunhofer IIS and Thomson.
Design and specifications are subject to change without notice.
Supplied accessories
AC power adaptor (1) (except NE240)
Headphones (1)
Connection Cord (1) (NE241CK)
Car battery cord (1) (NE241CK)
Magic tape (1) (NE241CK)
9-887-425-01
2006J05-1
© 2006.10
PORTABLE CD PLAYER
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
D-NE240/NE241/NE241CK
TABLE OF CONTENTS
1. SERVICING NOTES ............................................... 3
2. GENERAL ................................................................... 4
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 5
3-2. Cabinet (Lower) Assy...................................................... 5
3-3. MAIN Board, CD Mechanism (CDM-3525A) ............... 6
3-4. Cabinet (Inner) Assy, SWITCH Board............................ 6
4. TEST MODE.............................................................. 7
5. ELECTRICAL CHECK........................................... 7
6. DIAGRAMS
6-1. Printed Wiring Board – SWITCH Board – ..................... 9
6-2. Printed Wir ing Board
– MAIN Board (Component Side) – ............................... 10
6-3. Printed Wir ing Board
– MAIN Board (Conductor Side) – ................................. 11
6-4. Schematic Diagram – MAIN Section (1/2) –.................. 12
6-5. Schematic Diagram – MAIN Section (2/2) –.................. 13
7. EXPLODED VIEWS
7-1. Upper Lid and Cabinet (Inner) Section ........................... 17
7-2. Cabinet Lower Section .................................................... 18
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.
8. ELECTRICAL PARTS LIST................................ 19
On the AC power adaptor
• Use only the AC power adaptor supplied.
If your player is not supplied with an AC
power adaptor, use an AC-E45HG AC power
adaptor*. Do not use any other AC power
adaptor. It may cause a malfunction.
* Not available in Australia and some other
regions. Ask your dealer for detailed
information.
• Do not touch the AC power adaptor with wet hands.
• Connect the AC power adaptor to an easily accessible AC outlet.
Should you notice an abnormality in the AC power adaptor,
disconnect it from the AC outlet immediately.
Polarity of the
plug
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.
2
SECTION 1
SERVICING NOTES
D-NE240/NE241/NE241CK
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.
OPERATION CHECK WHEN THE LID IS OPEN
In performing the repair with the power supplied to the set, removing
the MAIN board causes the set to be disabled.
In such a case, make a solder bridge to short SL801 (OPEN/CLOSE)
on the MAIN board in advance.
– MAIN Board (Component Side) –
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 S811. (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 S811 with a screwdriv er having
a thin tip as shown in Fig.1.
3. Push 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 4
times along with inward motion for the focus search.
S811
SL801
(OPEN/CLOSE)
COLOR VARIATION
Model Destination
D-NE240 AEP zz
AEP zz
D-NE241 E92 z
MX z
D-NE241CK MX z
• Abbreviation
E92 : 120V AC area in E model
MX : Mexican model
COLOR
BLACK SILVER
S811
MAIN board
Fig. 1 Method to push the S811
3
D-NE240/NE241/NE241CK
SECTION 2
GENERAL
This section is extracted from
instruction manual.
*(play/pause)
(lecture/pause)•ENTER
/ •
(group) (groupe) –/+
GROUP
P MODE/
SOUND/AVLS
VOL +*/–
(stop) (arrêt)•STOP
Display / Fenêtre d’affichage
Track number
Numéro de plage
Bookmark
Signet
Sound mode
Mode audio
Group indicator
Témoin du groupe
* The button has a tactile dot. / Ce bouton possède un point tactile.
DC IN 4.5 V
to an AC outlet
vers une prise secteur
AC power adaptor
Adaptateur secteur
OPEN
(headphones) jack
(casque d’écoute)
Prise
Headphones
Casque
HOLD (rear) (arrière)
Playing time
Temps de lecture
Play mode
Mode de lecture
Remaining battery power
Autonomie des piles
MP3 indicator
Témoin MP3
4
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SET
3-2. CABINET (LOWER) ASSY
(Page 5)
D-NE240/NE241/NE241CK
SECTION 3
DISASSEMBLY
3-3. MAIN BOARD, CD MECHANISM (CDM-3525A)
(Page 6)
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET (LOWER) ASSY
3
four screws
3-4. CABINET (INNER) ASSY, SWITCH BOARD
(Page 6)
2
two screws
5
screw
4
Open the battery case lid.
7
flexible flat cable
(CN801)
9
cabinet (lower) assy
6
Lift up the CD mechanism.
knob (hold)
1
Open the upper lid.
8
MAIN board block
S812
knob (hold)
Note: On installation of MAIN board,
adjust the position of slide switch (S812)
and knob (hold).
S812
5
D-NE240/NE241/NE241CK
3-3. MAIN BOARD, CD MECHANISM (CDM-3525A)
3
insulator
orange
3
insulator
4
CD mechanism
(CDM-3525A)
2
flexible board
(CN501)
3
insulator
5
MAIN board
3-4. CABINET (INNER) ASSY, SWITCH BOARD
0
upper lid
4
two bosses
red
5
battery case lid
gray
black
9
SWITCH board
1
Remove four solders.
8
cover (upper lid)
7
eight screws
3
spring (R)
2
spring (L)
1
two bosses
6
cabinet (inner) assy
6
SECTION 4
p
TEST MODE
D-NE240/NE241/NE241CK
SECTION 5
ELECTRICAL ADJUSTMENTS
In the test mode, this set can check the microcomputer version and
liquid crystal display.
1) Short SL803 (TEST) on the MAIN board with a solder bridge.
Then, turn on the power.
2) Microcomputer version is displayed on the liquid crystal
display, and the liquid crystal display is all lighted.
3) Tuen off the power and open the solder bridge on SL803
(TEST) on the MAIN board.
Note: Remove the solders completely. Remaining could be shorted with
the chassis, etc.
– MAIN Board (Conductor Side) –
The CD section adjustments are done automatically in this set. In
case of operation check, confirm that focus bias.
Precautions for Cheack
1. Perform check 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 C in DC IN jack.
(J401)
HOLD switch: OFF
Connecting and Checking Location:
– MAIN Board (Conductor Side) –
TP604 (RF)
Focus Bias Check
Condition:
• Hold the set in horizonal state.
Connection:
oscilloscope
(AC range)
MAIN board TP604 (RF)
Procedure:
1. Connect the oscilloscope to the test point TP604 (RF) on the
MAIN board.
2. Set a disc. (YEDS-18)
3. Push the
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.
u button.
+
–
RF Signal reference Waveform (Eye Pattern)
VOLT/DIV: 500 mV (With the 10:1 probe in use)
TIME/DIV: 500 ns
SL803
(TEST)
RF level
1.1 to 1.5 Vp-
To watch the eye pattem, 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.
D-NE240/NE241/NE241CK
77
D-NE240/NE241/NE241CK
SECTION 6
DIAGRAMS
• 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.
• f : internal component.
• : 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.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• f : internal component.
• 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.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltages and wavef orms are dc with respect to ground in
no-signal conditions.
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
4
W or less unless otherwise
• Waveforms
– MAIN Board –
IC601 tg (CLK)
1
237 ns
1 V/DIV, 100 ns/DIV
IC601 th (CLK88)
2
11.3 µs
1 V/DIV, 5 µs/DIV
IC601 ya (XO)
3
2.2 Vp-p
3.1 Vp-p
1.6Vp-p
59.4 ns
500 mV/DIV, 20 ns/DIV
D-NE240/NE241/NE241CK
88
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