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SERVICE MANUAL
Ver 1.1 2004.04
US and foreign patents licensed from Dolby
Laboratories.
¥ OpenMG, ATRAC, ATRAC3, ATRAC3plus, SonicStage, SonicStage Simple Burner and their logos are
trademarks of Sony Corporation.
¥ WALKMAN is a registered trademark of Sony Corporation to represent Headphone Stereo products.
is a trademark of Sony Corporation.
¥ Microsoft, Windows, Windows NT are trademarks or registered trademarks of Microsoft Corporation in the
United States and/or other countries.
¥ IBM and PC/AT are registered trademarks of International Business Machines Corporation.
¥ Macintosh is a trademark of Apple Computer, Inc. in the United States and/or other countries.
¥ Pentium is a trademark or a registered trademark of Intel Corporation.
¥ Adobe and Acrobat Reader are trademarks of Adobe Systems Incorporated.
¥ All other trademarks are trademarks of their respective owners. " and ¤ marks are omitted in this manual.
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength: λ = 770 - 800 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
+1
20 - 20 000 Hz
dB (measured by JEITA)
–2
Output (at 4.5 V input level)
Headphones (stereo minijack)
Approx. 5 mW + Approx. 5 mW at 16 Ω
(Approx. 1.5 mW + Approx. 1.5 mW at 16 Ω)*
*For the customers in Europe
Power requirements
• Two LR6 (size AA) batteries: 1.5 V DC × 2
• AC power adaptor (DC IN 4.5 V jack):
120 V, 60 Hz (Canadian model)
100 - 240 V, 50/60 Hz (AEP and East
European models)
Sony Corporation
9-877-695-02
2004D05-1
Personal Audio Company
© 2004.04
Published by Sony Engineering Corporation
Model Name Using Similar Mechanism
CD Mechanism Type
Optical Pick-up Name

SPECIFICATIONS

1
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 two Sony alkaline batteries
LR6 (SG) (produced in Japan)
G-PROTECTION
"G-PRO 1"
"G-PRO 2"
Audio CD
50
2
ATRAC CD*
85
3
MP3 CD*
65
*1 Measured value by the standard of JEITA (Japan
Electronics and Information Technology
Industries Association)
*2 Recorded at 48 kbps
*3 Recorded at 128 kbps
Operating temperature
5°C - 35°C (41°F - 95°F)
D-NE270
Canadian Model
Dimensions (w/h/d) (excluding
projecting parts and controls)
Approx. 135.8 × 30.7 × 135.8 mm
× 1
× 5
3
1
3
(5
in.)
8
4
8
Mass (excluding accessories)
Approx. 177 g (6.3 oz.)
Supplied accessories
Earphones (1)
1
CD-ROM*
(SonicStage) (1)
User's guide for SonicStage (1)
45
85
*1 Do not play a CD-ROM on an audio CD player.
65
Design and specifications are subject to change
without notice.
PORTABLE CD PLAYER
AEP Model
NEW
CDM-3325ERV
DAX-25EV

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Summary of Contents for Sony D-NE270

  • Page 1: Specifications

    DAX-25EV trademarks of Sony Corporation. ¥ WALKMAN is a registered trademark of Sony Corporation to represent Headphone Stereo products. is a trademark of Sony Corporation. ¥ Microsoft, Windows, Windows NT are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.
  • Page 2: Table Of Contents

    SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ Polarity of the plug DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 3: Servicing Notes

    D-NE270 SECTION 1 SERVICING NOTES 3. Push the button. NOTES ON HANDLING THE OPTICAL PICK-UP 4. Observing the objective lens, check that the laser diode emits BLOCK OR BASE UNIT light. When the laser diode does not emit light, automatic power The laser diode in the optical pick-up block may suffer electro- control circuit or optical pick-up is faulty.
  • Page 4: General

    D-NE270 SECTION 2 This section is extracted from instruction manual. GENERAL Locating the controls CD player For details, see the pages in parentheses. 1 Operation button 7 Display 8 DC IN 4.5 V (external power input) jack /ENTER: play/pause/ enter 9 VOL (volume) + /–...
  • Page 5: Disassembly

    D-NE270 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. CABINET (LOWER) SECTION 3-5. LIQUID CRYSTAL DISPLAY PANEL (LCD2001), (Page 5) SWITCH BOARD (Page 7) 3-3. OPTICAL PICK-UP ASSY (CDM-3325ERV) (Page 6) 3-4.
  • Page 6: Optical Pick-Up Assy (Cdm-3325Erv)

    D-NE270 3-3. OPTICAL PICK-UP ASSY (CDM-3325ERV) 1 knob spacer 5 insulator 6 optical pick-up assy (CDM-3325ERV) 2 two connectors (CN401, CN402) 5 insulator 4 OP flexible board (CN601) 5 insulator 3-4. MAIN BOARD 2 MAIN board S810 Note : On installation of main board, adjust the position of switch (S810) and knob (hold).
  • Page 7: Liquid Crystal Display Panel (Lcd2001), Switch Board

    D-NE270 3-5. LIQUID CRYSTAL DISPLAY PANEL (LCD2001), SWITCH BOARD 2 eight screws 1 Open the cabinet (upper) section. 6 liquid crystal display panel (LCD2001) (CN2001) 4 Open the cover. 3 claw 8 SWITCH board 9 cover 3 claw 5 flexible flat (20core) cable...
  • Page 8: Test Mode

    D-NE270 SECTION 4 TEST MODE In the test mode, this set can check the microcomputer version and liquid crystal display. 1) Short SL824 (TEST) on the MAIN board with a solder bridge. Then, turn on the power. 2) Microcomputer version is displayed on the liquid crystal dis- play, and the liquid crystal display is all lighted.
  • Page 9: Electrical Check

    D-NE270 SECTION 5 ELECTRICAL CHECK Focus Bias Check The CD section adjustments are done automatically in this set. In case of operation check, confirm that focus bias. Condition: • Hold the set in horizontal state. Precautions for Check 1. Perform check in the order given.
  • Page 10: Diagrams

    D-NE270 SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAM CD DSP HEADPHONE AMP IC601 IC301 J301 AOUT2 ROUT OPTICAL PICK-UP BLOCK DAX-25EV AOUT1 LOUT DETECTOR VREF RFAC LRMU MUTE RFDC D-RAM IC603 XTAI X601 16.934MHz COIL/MOTOR DRIVE XTAO IC403(1/2) LASER AUTOMATIC DIODE POWER 11 .
  • Page 11: Note For Printed Wiring Boards And Schematic Diagrams

    D-NE270 Ver 1.1 6-2. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Waveforms – MAIN Board – Note on Printed Wiring Board Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF • X : parts extracted from the component side.
  • Page 12: Main Board (Component Side)

    D-NE270 6-3. PRINTED WIRING BOARD – MAIN Board (Component Side) – :Uses unleaded solder. • Semiconductor Location Ref. No. Location SWITCH BOARD CN2002 (Page 18) D308 MAIN BOARD (COMPONENT SIDE) IC702 IC702 IC803 IC803 OPTICAL PICK-UP BLOCK DAX-25EV M902 (SLED)
  • Page 13: Printed Wiring Board - Main Board (Conductor Side)

    D-NE270 Ver 1.1 6-4. PRINTED WIRING BOARD – MAIN Board (Conductor Side) – :Uses unleaded solder. • Semiconductor Location MAIN BOARD (CONDUCTOR SIDE) Ref. No. Location D307 D401 D402 D403 D421 D422 IC301 IC403 IC601 IC603 IC701 IC801 IC804 IC806...
  • Page 14: Schematic Diagram - Main Board (1/4)

    D-NE270 Ver 1.1 6-5. SCHEMATIC DIAGRAM – MAIN Board (1/4) – • • See page 11 for Waveforms. See page 21 for IC Pin Function Description. (1/4) C621 R612 6.3V FB601 C619 CN601 C696 6.3V X601 OPGSW OPGSW 16.934MHz FB602 L602 47µH...
  • Page 15: Schematic Diagram – Main Board (2/4)

    D-NE270 6-6. SCHEMATIC DIAGRAM – MAIN Board (2/4) – • See page 11 for Waveform. • See page 20 for IC Block Diagrams. (2/4) HEADPHONE AMP IC301 TA2120FN(EL) C107 R102 ALCDET J301 100k ATTSW ALCIN MIXOUT FB201 C207 R202 PGND...
  • Page 16: Schematic Diagram – Main Board (3/4)

    D-NE270 6-7. SCHEMATIC DIAGRAM – MAIN Board (3/4) – • See page 11 for Waveform. • See page 20 for IC Block Diagram. (Page 15) (Page 14) (3/4) D421 R452 1SS355TE-17 220k R415 D422 470k 1SS355TE-17 R453 C416 CN401 M902...
  • Page 17: Schematic Diagram - Main Board (3/4)

    D-NE270 Ver 1.1 6-8. SCHEMATIC DIAGRAM – MAIN Board (4/4) – • • See page 11 for Waveform. See page 21 for IC Pin Function Description. (Page 15) (4/4) XWAKEUP S806 R903 R805 R868 100k R802 S809 2.2k R942 CN801...
  • Page 18: Printed Wiring Board - Switch Board

    D-NE270 6-9. PRINTED WIRING BOARD – SWITCH Board – :Uses unleaded solder. -DISPLAY – MENU S2002 – 2005, SWITCH BOARD S2007 - 2011 ENTER 1-860-997- (11) LCD2001 LIQUID CRYSTAL DISPLAY – MAIN BOARD CN801 (Page 12)
  • Page 19: Schematic Diagram - Switch Board

    D-NE270 6-10. SCHEMATIC DIAGRAM – SWITCH Board – CN2001 CN2002 XRES R2001 LCD_CS LCDA0 LCD2001 LIQUID CRYSTAL (Page 17) DISPLAY VCPU_2.0V R2014 0 VDD2 VCC2_2.7V DGND C2001 VOUT AD_KEY1 AD_KEY2 C2002 SGND S2002 C2003 S2003 S2004 S2005 DISPLAY MENU C2004...
  • Page 20 D-NE270 • IC Block Diagrams IC701 CXR710160-207R – MAIN Board – IC301 AN75315A 64 63 62 61 60 59 58 57 56 55 52 51 50 49 BIAS BEEP BIAS IN B IN A PE3/RxD1 PE2/TxD1 PE1/RxD0 PE0/TxD0 BIAS BEEP...
  • Page 21 D-NE270 • IC Pin Function Description IC601 CDX3039AR (CD DSP) Pin No. Pin Name Description XRAS Row address strobe signal output to the D-RAM Data input enable signal output to the D-RAM 3 to 6 D1, D0, D3, D2 Two-way data bus with the D-RAM...
  • Page 22 D-NE270 Pin No. Pin Name Description VREFR R-ch reference voltage output terminal AOUT2 R-ch analog audio signal output terminal AVDD2 — Power supply terminal (+2.8V) TES1 Input terminal for the test (fixed at “L”) TEST Input terminal for the test (fixed at “L”) VSS1 —...
  • Page 23 D-NE270 Pin No. Pin Name Description Spindle motor drive signal output terminal Spindle motor servo control signal output terminal C176 176.4 kHz clock signal output to coil/motor drive VDD2 — Power supply terminal (+2.1V) LRCK_O L/R sampling clock signal output to the MP3 decoder...
  • Page 24 D-NE270 IC801 TMP91CY28FG-5GO9 (SYSTEM CONTROLLER) Pin No. Pin Name Description 1, 2 — Ground terminal VCPU — Power supply terminal (+2.0V) XRST_O System reset signal output to the CD DSP PWM_O Power on/off signal output terminal Not used BEEP_O Beep signal output to the electrical volume...
  • Page 25 D-NE270 Pin No. Pin Name Description CDON_O CD on request signal output terminal Not used AUD_SEL Audio data selection signal output terminal Not used CHGGND_ON_O Not used Not used BAT_VCC_ON_O DTS_RST_O Reset signal output terminal Not used XKRESET Reset signal output to the MP3 decoder...
  • Page 26: Exploded Views

    D-NE270 Ver 1.1 SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark may have some difference from the original are seldom required for routine service. Some 0 or dotted line with mark 0 are one.
  • Page 27: Cabinet (Upper) Section

    D-NE270 7-2. CABINET (UPPER) SECTION LCD2001 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-260-851-91 LID, UPPER 3-254-003-01 SCREW 3-260-852-31 WINDOW, LCD 3-266-394-01 SHEET (COLOR) 3-261-438-11 LID (1) (KNOB), UPPER 3-260-853-31 ESCUTCHEON 3-261-439-11 LID (2) (KNOB), UPPER...
  • Page 28: Cabinet (Lower) Section

    D-NE270 Ver 1.1 7-3. CABINET (LOWER) SECTION CDM-3325ERV main board not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-245-331-02 INSULATOR 3-261-254-01 TERMINAL, BATTERY LINK 3-261-236-01 CABINET (LOWER) * 103 X-2021-368-1 MAIN BOARD, COMPLETE (for service)
  • Page 29: Optical Pick-Up Section (Cdm-3325Erv)

    D-NE270 Ver 1.1 7-4. OPTICAL PICK-UP SECTION (CDM-3325ERV) M901 M902 The components identified by Les composants identifiés par une mark 0 or dotted line with marque 0 sont critiques pour la mark 0 are critical for safety. sécurité. Replace only with part num- Ne les remplacer que par une pièce...
  • Page 30: Electrical Parts List

    D-NE270 Ver 1.1 SECTION 8 MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by 0 or dotted line with mark mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 31 D-NE270 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C705 1-119-750-11 TANTALUM CHIP 22uF 6.3V FB702 1-414-760-21 FERRITE, EMI (SMD) (1608) C706 1-164-360-11 CERAMIC CHIP 0.1uF C708 1-164-360-11 CERAMIC CHIP 0.1uF < IC/TRANSISTOR > C709 1-164-360-11 CERAMIC CHIP 0.1uF...
  • Page 32 D-NE270 Ver 1.1 MAIN SWITCH Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R438 1-216-833-11 METAL CHIP 1/10W R440 1-216-857-11 METAL CHIP 1/10W R971 1-216-845-11 METAL CHIP 100K 1/10W R452 1-218-903-11 METAL CHIP 220K 0.5% 1/10W...
  • Page 33 D-NE270 Ver 1.1 SWITCH Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R2019 1-216-825-11 METAL CHIP 2.2K 1/10W X-3384-860-3 CD-ROM (APPLICATION) ASSY (2.0) (in case) R2020 1-216-833-11 METAL CHIP 1/10W (AEP, East European) R2021 1-216-829-11 METAL CHIP 4.7K...
  • Page 34: Revision History

    D-NE270 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2004.03...

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