Sony_D-NE920 service manual 电路图 维修原理图.pdf

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1、SERVICE MANUAL Sony Corporation Personal Audio Division Published by Sony Engineering Corporation US Model Canadian Model AEP Model UK Model D-NE920 E Model D-NE920/NE920LS Australian Model D-NE920 Chinese Model D-NE920LS Tourist Model D-NE920 PORTABLE CD PLAYER 9-879-269-04 2005K16-1 2005.11 Ver. 1

2、.3 2005.11 SPECIFICATIONS D-NE920/NE920LS Model Name Using Similar MechanismNEW CD Mechanism TypeCDM-3325ERV2 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

3、 44.6 W (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 (st

4、ereo 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 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 Wave

5、length: 630 - 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. 1

6、27 20.6 136.4 mm (5 13 16 5 3 8 in.) Mass (excluding accessories) Approx. 160 g (5.7 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 instruction

7、s Installation/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 : BLUE 2 D-NE920/NE920LS CAUTION INVISIBLE LASER RADIATION WHEN OPEN DO NOT STARE INTO BEAM OR V

8、IEW DIRECTLY 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 cir

9、cuit board (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 pow

10、er 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 wet hands. Connect the AC power adaptor to an easily accessible AC ou

11、tlet. Should 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 COM

12、PONENTS WITH 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

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

14、 for a slightly 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) t

15、han 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. Terminals To clean the terminals If the terminals on the charging stand become dirt

16、y, the battery 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 COMPOSAN

17、T AYANT RAPPORT 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

18、SONY. 3 D-NE920/NE920LS TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .7 3-2.Upper Lid Sub Assy .8 3-3.SWITCH Board.9 3-4.Cabi Mid Sub Assy. 10 3-5.EGH Board, CD Mechanism Deck (CDM-3325ERV2) . 11 3-6.JACK Board, JACK SUB Board . 12 3-7.Turn Table Motor Assy (M

19、901), Sled Motor Assy (M902), Optical Pick-up (DAX-25EV) . 12 4.ELECTRICAL CHECKING. 13 5.DIAGRAMS 5-1.Block Diagram . 15 5-2.Printed Wiring Board EGH Board (Side A) . 16 5-3.Printed Wiring Board EGH Board (Side B) . 17 5-4.Schematic Diagram EGH Board (1/3) . 18 5-5.Schematic Diagram EGH Board (2/3)

20、 . 19 5-6.Schematic Diagram EGH Board (3/3) . 20 5-7.Printed Wiring Board JACK Board (Side A), JACK SUB Board . 21 5-8.Printed Wiring Board JACK Board (Side B) . 22 5-9.Schematic Diagram JACK Board, JACK SUB Board . 23 5-10. Printed Wiring Board SWITCH Board . 24 5-11. Schematic Diagram SWITCH Board

21、 . 25 6.EXPLODED VIEWS 6-1.Overall Assy . 31 6-2.Cabinet (Lower) Section. 32 6-3.CD Mechanism Section (CDM-3325ERV2) . 33 7.ELECTRICAL PARTS LIST. 34 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

22、 CDs: CD-R/CD-RW on which audio data compressed in the ATRAC3plus format has been 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 au

23、dio files to about 1/20 of their original size at 64 kbps. Bit rates and sampling 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 Son

24、icStage* Bit rates and sampling frequencies this CD player can play are shown 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

25、, etc.) to MP3 files. Up to 64 characters of ID3 tag information can be displayed 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 ma

26、y play your CD. An ATRAC CD on which audio data compressed in the MP3 format has 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 ca

27、n be played. Music discs encoded with copyright protection technologies This product 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

28、among those discs, there are some that do not conform to the CD standard and may 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 Layer

29、3 8 - 160 kbps 8/11.025/12 kHz MPEG-1 Layer3 32 - 320 kbps 32/44.1/48 kHz 4 D-NE920/NE920LS 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

30、 the human body. During repair, pay attention to electrostatic break-down 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

31、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. LASER DIODE AND FOCUS SEARCH OPERATION CHECK During normal operation of t

32、he equipment, emission of the laser diode is prohibited unless the upper lid is 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, tu

33、rn on the S501 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 light. When the laser diode does not emit light, automatic power control circuit or optical pickup is faulty. In this operation, the objective

34、 lens will move up and down 4 times along with inward motion for the focus search. 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

35、mounted EGH board is exchanged or when EEPROM(IC602) on an EGH board is exchanged. Please confirm in each service front office about the infomation on the handling of PATCH. Ver. 1.3 5 D-NE920/NE920LS SECTION 2 GENERAL This section is extracted from instruction manual. ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

36、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 6 D-NE920/NE920LS ? ? ? ? ? ? ? ? ? ? ? ? 7 D-NE920/NE920LS SECTION 3 DISASSEMBLY 3-1.DISASSEMBLY FLOW Note: Disassemble the unit in the order as shown below. 3-2. UPPER LID SUB ASSY (Page 8) 3-4. CABI MID SUB ASSY (Page 10) 3-6. JACK BOARD, JACK SUB BOARD

37、 (Page 12) 3-3. SWITCH BOARD (Page 9) SET 3-5. EGH BOARD, CD MECHANISM DECK (CDM-3325ERV2) (Page 11) 3-7. TURN TABLE MOTOR ASSY(M901), SLED MOTOR ASSY(M902), OPTICAL PICK-UP(DAX-25EV) (Page 12) 8 D-NE920/NE920LS Note: Follow the disassembly procedure in the numerical order given. 3-2.UPPER LID SUB A

38、SSY 6 7 3bracket (hinge R) 4bracket (hinge L) 2two screws 1Push two knobs and open the upper lid. 8 upper lid sub assy 5 Close the cover until the tip of the cover of the upper lid sub assembly is left open by 5 mm, then slide the upper lid sub cover assembly in the direction of the arrow. 9 D-NE920

39、/NE920LS 3-3.SWITCH BOARD 2upper lid 4SWITCH board 5button 6upper lid assy 3flat cable (CN1002) 1six screws 10 D-NE920/NE920LS 3-4.CABI MID SUB ASSY 1two screws 2seven screws 4open knob (L) 5open knob (R) 3spring (lock claw) 6spring (upper lid) 7cabi mid sub assy spring (lock claw) open knob (R) ope

40、n knob (L) battery terminal board (+) Note: It is recommended to visually check that the battery terminal board (+) is installed in the specified 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 a

41、ssy. 11 D-NE920/NE920LS 3-5.EGH BOARD, CD MECHANISM DECK (CDM-3325ERV2) 6EGH board 4reinforcement (upper) 7two insulators 7insulator 8CD mechanism deck (CDM-3325ERV2) 5 flexible board (CN604) 2 connector (2pin) 1 connector (4pin) 3 Remove solder of the JACK board. 12 D-NE920/NE920LS 3-6.JACK BOARD,

42、JACK SUB BOARD 0 qf JACK board 3 JACK SUB board qs battery terminal board (-) 7 SUB board (battery terminal board (+) 2 Remove solder of the JACK board. 6 Remove solder of the JACK board. qd flat cable 9 Remove solder of the shield tape. 8 shield tape qa Remove solder of the JACK board. 1 cushion 4 cushion 5 cushion 3-7.TU