Sony_D-NE20 service manual 电路图 维修原理图.pdf

《Sony_D-NE20 service manual 电路图 维修原理图.pdf》由会员分享，可在线阅读，更多相关《Sony_D-NE20 service manual 电路图 维修原理图.pdf（36页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL Sony Corporation Personal Audio Division Published by Sony Engineering Corporation US Model Canadian Model AEP Model UK Model D-NE20 E Model D-NE20/NE20LS Australian Model D-NE20 Chinese Model D-NE20LS Tourist Model D-NE20 PORTABLE CD PLAYER 9-879-267-03 2005K16-1 2005.11 Ver. 1.2 200

2、5.11 SPECIFICATIONS D-NE20/NE20LS Model Name Using Similar MechanismNEW CD Mechanism TypeCDM-3325ERV Optical Pick-up NameDAX-25EV System Compact disc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 770 - 800 nm Emission duration: Continuous Laser output: Less than 44.6 W (

3、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 +1 -2dB (measured by JEITA) Output (at 3 V input level) Line output (stereo mini

4、jack) 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 k? (Approx. 1.5 mW + Approx. 1.5 mW at 16 k)* *For the customers in Europe Optical digital output (optical output connector) Output level: 21- 15 dBm Wavelength: 6

5、30 - 690 nm at peak level Power requirements Sony NH-14WM rechargeable battery: 1.2 V DC 1 LR6 (size AA) battery: 1.5 V DC 1 AC power adaptor (DC IN 3 V jack) Rated current: 1 A Operating temperature 5C - 35C (41F - 95F) Dimensions (w/h/d) (excluding projecting parts and controls) Approx. 127 13.1 1

6、32.5 mm (5 17 32 5 1 4 in.) Mass (excluding accessories) Approx. 116 g (4.1 oz.) Supplied accessories AC power adaptor Charging stand External battery Rechargeable battery case with cover Battery carrying case Carrying pouch Earphones Remote control CD-ROM (SonicStage) Operating instructions Install

7、ation/Operating Guide AC plug adaptor (Supplied with tourist model) US and foreign patents licensed from Dolby Laboratories. Design and specifications are subject to change without notice. Photo : RED 2 D-NE20/NE20LS CAUTION INVISIBLE LASER RADIATION WHEN OPEN DO NOT STARE INTO BEAM OR VIEW DIRECTLY

8、 WITH OPTICAL INSTRUMENTS CLASS 1M INVISIBLE LASER RADIATION WHEN OPEN DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS 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 (

9、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 damaged by heat. On AC power adaptor Use only the AC power adaptor s

10、upplied. 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 wet hands. Connect the AC power adaptor to an easily accessible AC outlet. Should

11、 you notice an abnormality in the AC power adaptor, disconnect it from the AC outlet immediately. 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

12、 SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. UNLEADED SOLDER 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

13、 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 solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a sligh

14、tly longer time. Soldering irons using a temperature regulator should be set to about 350 C. 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 viscou-s (sticky, less prone to flow) than ordinary

15、 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. Terminals To clean the terminals If the terminals on the charging stand become dirty, the batte

16、ry may not be charged properly. Clean the terminals with a cotton swab or a dry cloth periodically as illustrated below. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. ATTENTION AU COMPOSANT AYANT RAPP

17、ORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 3 D-NE

18、20/NE20LS TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .6 3-2.Lid Upper Assy.7 3-3.Cabi Mid Sub Assy.8 3-4.EGH Board, JACK Board, JACK SUB Board, CD Mechanism Deck (CDM-3325ERV).9 3-5.Window (LED), Button (Control) . 10 3-6.Turn Table Motor Assy (M901), Sled M

19、otor Assy (M902), Optical Pick-up (DAX-25EV) . 10 4.ELECTRICAL CHECKING. 11 5.DIAGRAMS 5-1.Block Diagram . 13 5-2.Printed Wiring Board EGH Board (Side A) . 14 5-3.Printed Wiring Board EGH Board (Side B) . 15 5-4.Schematic Diagram EGH Board (1/3) . 16 5-5.Schematic Diagram EGH Board (2/3) . 17 5-6.Sc

20、hematic Diagram EGH Board (3/3) . 18 5-7.Printed Wiring Board JACK Board (Side A), JACK SUB Board, SUB Board . 19 5-8.Printed Wiring Board JACK Board (Side B) . 20 5-9.Schematic Diagram JACK Board, JACK SUB Board, SUB Board . 21 6.EXPLODED VIEWS 6-1.Overall Assy . 27 6-2.Cabinet (Lower) Section. 28

21、6-3.CD Mechanism Section (CDM-3325ERV) . 29 7.ELECTRICAL PARTS LIST. 30 You can play discs on this CD player. Audio CDs: CD-DA format CDs CD-DA (Compact Disc Digital Audio) is a recording standard used for Audio CDs. ATRAC CDs: CD-R/CD-RW on which audio data compressed in the ATRAC3plus format has b

22、een recorded by using SonicStage* ATRAC3plus (Adaptive Transform Acoustic Coding3plus) is audio compression technology that satisfies the demand for high sound quality and high compression rates. ATRAC3plus can compress audio files to about 1/20 of their original size at 64 kbps. Bit rates and sampl

23、ing frequencies this CD player can play are: Up to 62 characters can be displayed on this CD player. MP3 CDs: CD-R/CD-RW on which audio data compressed in the MP3 format has been recorded by using a software other than SonicStage* Bit rates and sampling frequencies this CD player can play are shown

24、below. Variable Bit Rate (VBR) files can also be played. This CD player conforms to Version 1.0/1.1/2.2/2.3/2.4 of the ID3 tag format. ID3 tag is a format for adding certain information (track name, album name, artist name, etc.) to MP3 files. Up to 64 characters of ID3 tag information can be displa

25、yed on this CD player. CD-Extra and Mix-Mode CDs: CD-R/CD-RW on which CD-DA format data and CD-ROM format data are recorded together.* If you cannot play your CD, change the CD-EXTRA setting in the OPTION menu. Then you may play your CD. An ATRAC CD on which audio data compressed in the MP3 format h

26、as been recorded using software other than SonicStage can also be played. With SonicStage, you cannot create a CD on which mixed format audio data is recorded. * Only ISO 9660 Level 1/2 and Joliet extension format discs can be played. Music discs encoded with copyright protection technologies This p

27、roduct is designed to play back discs that conform to the Compact Disc (CD) standard. Recently, various music discs encoded with copyright protectiontechnologies are marketed by some record companies. Please be aware that among those discs, there are some that do not conform to the CD standard and m

28、ay not be playable by this product. Bit rates Sampling frequencies ATRAC3plus 48/64/256 kbps 44.1 kHz ATRAC3 66/105/132 kbps 44.1 kHz Bit rates Sampling frequencies MPEG-2 Layer3 8 - 160 kbps 16/22.05/23 kHz MPEG-2.5 Layer3 8 - 160 kbps 8/11.025/12 kHz MPEG-1 Layer3 32 - 320 kbps 32/44.1/48 kHz 4 D-

29、NE20/NE20LS SECTION 1 SERVICING NOTES The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and al

30、so 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

31、 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. 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

32、closed while turning ON the S501. (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 S501 with a screwdriver having a thin tip as shown in Fig.1. 3.Press t

33、he 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 searc

34、h. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT S501 lever (lid detection) lever (lid detection) JACK BOARD Fig. 1 Method to push the S501 NOTES ON HANDLING OF PATCH The handling of PATCH is necessary when a mounted EGH board is exchanged or when EEPROM(IC602) on an EGH board is exchange

35、d. Please confirm in each service front office about the infomation on the handling of PATCH. Ver. 1.2 5 D-NE20/NE20LS SECTION 2 GENERAL This section is extracted from instruction manual. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

36、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Tourist modelexcept Tourist models Remote display 6 D-NE20/NE20LS SECTION 3 DISASSEMBLY 3-1.DISASSEMBLY FLOW Note: Disassemble the unit in the order as shown below. 3-3. CABI MID SUB ASSY (Page 8) 3-2. LID UPPER ASSY (Page 7) 3-4. EGH BOARD, JACK BOARD, JACK SUB B

37、OARD, CD MECHANISM DECK (CDM-3325ERV) (Page 9) 3-5. WINDOW(LED), BUTTON(CONTROL) (Page 10) 3-6. TURN TABLE MOTOR ASSY(M901), SLED MOTOR ASSY(M902), OPTICAL PICK-UP(DAX-25EV) (Page 10) SET 7 D-NE20/NE20LS Note: Follow the disassembly procedure in the numerical order given. 3-2.LID UPPER ASSY 6 7 3bra

38、cket (hinge R) 4bracket (hinge L) 1Push two knobs and open the lid upper. 2two screws (upper lid) 8 lid upper assy 5 Close the cover until the tip of the cover of the top cover assembly is left open by 5 mm, then slide the top cover assembly in the direction of the arrow. 8 D-NE20/NE20LS 3-3.CABI MI

39、D SUB ASSY 1screw 4open knob (L) 5open knob (R) 3spring (lock claw) 6spring (upper lid) 7cabi mid sub assy spring (lock claw) open knob (R)open knob (L) 2eight screws battery terminal board (+) Note: It is recommended to visually check that the battery terminal board (+) is installed in the specifie

40、d position after assembling the cabi mid sub assy because, in some cases, the battery terminal board (+) cannot be housed when assembling the cabi mid sub assy. 9 D-NE20/NE20LS 3-4.EGH BOARD, JACK BOARD, JACK SUB BOARD, CD MECHANISM DECK (CDM-3325ERV) 4 6EGH board 7two insulators 7insulator 8CD mech

41、anism deck (CDM-3325ERV) 5 flexible board (CN601) 0 JACK board qg JACK SUB board qf three claws assembly: the cable pass on three claws. 2 connector (2pin) 1 connector (4pin) 3 connector (3pin) qd SUB board (battery terminal board (+) qa battery terminal board () 9 Remove solder of the JACK board. q

42、s Remove solder of the JACK board. 10 D-NE20/NE20LS 3-5.WINDOW (LED), BUTTON (CONTROL) 1screw 2window (led) 3button (control) 2 gear cover 4 optical pick-up (DAX-25EV) 3 sled motor assy (M902) 6 turn table motor assy (M901) 1three screws (B 1.7 4) 5three screws (B 1.7 4) 3-6.TURN TABLE MOTOR ASSY (M901), SLED MOTOR AS