PORTABLE CD PLAYER
Personal Audio Group
Published by Sony Engineering Corporation
Ver. 1.6 2005.02
Model Name Using Similar Mechanism
CD Mechanism Type
Optical Pick-up Name
Compact disc digital audio system
Laser diode properties
= 770 - 800 nm
Emission duration: Continuous
Laser output: Less than 44.6
(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.)
1-bit quartz time-axis control
20 - 20 000 Hz
2 dB (measured by JEITA)
Output (at 3 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. 1.5 mW + Approx. 1.5 mW at 16
*For the customers in Europe
Optical digital output (optical output connector)
Output level: 21 - 15 dBm
Wavelength: 630 - 690 nm at peak level
· Sony NH-14WM rechargeable battery: 1.2 V
· LR6 (size AA) battery: 1.5 V DC
·AC power adaptor (DC IN 3 V jack)
Battery life*1 (approx. hours)
When you use the CD player on a flat and stable
When LIGHT mode and SOUND mode are set to
Playing time varies depending on how the CD
player is used.
When using one NH-14WM (charged for about
When using external battery case (one
When using one NH-14WM and external
battery case (one alkaline battery*5)
*1 Measured value by the standard of JEITA (Japan
Electronics and Information Technology
*2 Charging time varies depending on how the
rechargeable battery is used.
*3 Recorded at 48 kbps
*4 Recorded at 128 kbps
*5 When using Sony alkaline battery LR6 (SG)
(produced in Japan)
Photo : BLACK
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TABLE OF CONTENTS
1. SERVICING NOTE ·························································· 4
2. GENERAL ·········································································· 6
3-1. UPPER LID ASSY ························································ 8
3-2. SWITCH BOARD ························································· 9
3-3. CABINET (INNER) ···················································· 10
3-4. MAIN BOARD, CD MECHANISM DECK
(CDM-3325ER2) ························································· 11
3-5. TURN TABLE MOTOR ASSY (M901),
SLED MOTOR ASSY (M902),
OPTICAL PICK-UP (DAX-25E) ································ 12
4. ELECTRICAL CHECKING ········································· 13
5. DIAGRAMS ······································································ 14
5-1. BLOCK DIAGRAM
MAIN SECTION-1 ··············································· 15
MAIN SECTION-2 ··············································· 16
POWER SECTION ··············································· 17
5-2. PRINTED WIRING BOARD
MAIN BOARD (SIDE A) ····································· 18
5-3. PRINTED WIRING BOARD
MAIN BOARD (SIDE B) ····································· 19
5-4. SCHEMATIC DIAGRAMS
MAIN BOARD (1/4) ············································· 20
5-5. SCHEMATIC DIAGRAMS
MAIN BOARD (2/4) ············································· 21
5-6. SCHEMATIC DIAGRAMS
MAIN BOARD (3/4) ············································· 22
5-7. SCHEMATIC DIAGRAMS
MAIN BOARD (4/4) ············································· 23
5-8. PRINTED WIRING BOARD SWITCH BOARD
(CHINESE AND KOREAN MODELS) ·················· 24
5-9. SCHEMATIC DIAGRAMS SWITCH BOARD
(CHINESE AND KOREAN MODELS) ·················· 25
5-10. PRINTED WIRING BOARD SWITCH BOARD
(EXCEPT CHINESE AND KOREAN MODELS) ·········· 26
5-11. SCHEMATIC DIAGRAMS SWITCH BOARD
(EXCEPT CHINESE AND KOREAN MODELS) ·········· 27
5-12. IC PIN FUNCTION DESCRIPTIONS ······················· 29
6. EXPLODED VIEWS
6-1. CABINET (UPPER) SECTION ·································· 34
6-2. CABINET (LOWER) SECTION ································ 35
6-3. CD MECHANISM SECTION (CDM-3325ER2) ······· 36
7. ELECTRICAL PARTS LIST ······································· 37
°C - 35°C (41°F - 95°F)
Dimensions (w/h/d) (excluding
projecting parts and controls)
× 21.8 × 139.4 mm
× 7/8 × 5 1/2 in.)
Mass (excluding accessories)
Approx. 168 g (6.0 oz.)
AC power adaptor (1)
Remote control (1)
US and foreign patents licensed from Dolby
Rechargeable battery (1)
Charging Stand (1)
Battery carrying case (1)
Carrying porch (1)
External battery case (1)
CD-ROM (SonicStage Simple Burner) (1)
User's guide for SonicStage Simple Burner (1)
Headphones (1) (for US model)
Earphones (1) (for other models)
Design and specifications are subject to change
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
· Unleaded solder melts at a temperature about 40
°C higher than
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
· Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
· Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Flexible Circuit Board Repairing
·Keep the temperature of the soldering iron around 270 °C dur-
· 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
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.
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
· INVISIBLE LASER RADIATION
· DO NOT STARE INTO BEAM OR
VIEW DIRECTLY WITH OPTICAL
· CLASS 1M INVISIBLE LASER
RADIATION WHEN OPEN
· DO NOT VIEW DIRECTLY WITH
On AC power adaptor
·Use only the AC power adaptor supplied.
If your CD player is not supplied with the
one, use the AC-E30HG AC power
adaptor. Do not use any other AC power
adaptor. It may cause a malfunction.
Polarity of the plug
·Do not touch the AC power adaptor with
·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
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.
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
The flexible board is easily damaged and should be handled with
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: 0.45 to 0.65 Vp-p
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
Fig. 1 Method to push the S812
IC601 FOK output ygp
MAIN BOARD (SIDE B)
LASER DIODE AND FOCUS SEARCH OPERATION
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S812. (push switch type)
The following checking method for the laser diode is operable.
Emission of the laser diode is visually checked.
1. Remove the upper lid. (Please refer to disassembly.)
2. With a disc not set, turn on the S812 with a screwdriver having a
thin tip as shown in Fig.1.
3. Press the u button.
4. Observing the objective lens, check that the laser diode emits
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.
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 (S812) ........ OFF
Solder Land (SL812) ................................ OPEN
[HOLD] switch (S802) ............................... OFF
3) Short the solder land SL805 (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.
1) Turn off the power.
2) Open the solder land SL805 (TEST) on the MAIN board.
Note : The solder should be removed clean.
MAIN BOARD (SIDE B)