SONY MZ-R909电路原理图 .pdf

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1、SERVICE MANUAL d impedance 10 Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output: less than 44.6 W (This output is the value measured at a distance of 200 mm from the lens surface on the optical p

2、ick-up block with 7 mm aperture.) Recording and playback time When using MDW-80: Maximum 160 min. in monaural Maximum 320 min. in stereo Revolutions 350 rpm to 2,800 rpm (CLV) Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Sampling rate converter Inp

3、ut: 32 kHz/44.1 kHz/48 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding) ATRAC3 LP2 ATRAC3 LP4 Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 stereo channels 1 monaural channel Frequency response 20 to 20,000 Hz 3 dB Below measurable limit Inputs Microphone: stereo min

4、i-jack, minimum input level 0.25 mV Line in1): stereo mini-jack, minimum input level 49 mV Optical (Digital) in 1): optical (digital) mini-jack Outputs i/LINE OUT2): stereo mini-jack headphones/earphones: maximum output level 5 mW + 5 mW, load impedance 16 ohm LINE OUT: 194 mV, loa kilohm Wow and Fl

5、utter Power requirements Sony AC Power Adaptor connected at the DC IN 3V jack: 230 - 240 V AC, 50 Hz (Hong kong model) 100 - 240 V AC, 50/60 Hz (Other models) Nickel metal hydride rechageable battery NH- 14WM(A) 1.2V 1350 mAh (MIN) Ni-MH LR6 (size AA) alkaline battery Dimensions 3) Approx. 78.9 72.0

6、 17.1 mm (w/h/d) (31/8 27/8 11/16 in.) Mass Approx. 110 g (3.9 oz) the recorder only 1)The LINE IN (OPT) jack is used to connect either a digital (optical) cable or a line (analog) cable. 2)The i/LINE OUT jack connector either headphones/earphones or a line cable. 3)Measured in accordance with JEITA

7、. Battery operating time Battery life1) When recording 2) (Unit: approx hours)(JEITA3) 1)The battery life may be shorter due to operating conditions and the tempreture of the location. 2)When you record, use a fully charged rechargeable battery. Recording time may differ according to the alkaline ba

8、tteries. BatteriesSP Stereo LP2 Stereo LP4 Stereo NH-14WM nickel metal hydride rechargeable battery4) 8.51114 LR6 (SG) Sony alkaline dry battery5) 7.51215 NH-14WM nickel metal hydride rechargeable battery4) + One LR6 (SG)5) 202837 PORTABLE MINIDISC RECORDER E Model Tourist Model SPECIFICATIONS MZ-R9

9、09 US and foreign patents licensed from Dolby Laboratories. Continued on next page Model Name Using Similar MechanismNEW Mechanism TypeMT-MZR909-171 Optical Pick-up NameLCX-4R Ver 1.0 2001. 08 9-873-285-01Sony Corporation 2001H0500-1Personal Audio Company C 2001.8Shinagawa Tec Service Manual Product

10、ion Group 本资料由O K X I A 视听皮带资源库w w w . o k x i a . c n 提供 本资料由视听皮带资源库 收集整理提供 2 MZ-R909 TABLE OF CONTENTS 1.SERVICING NOTES.3 2.GENERAL.4 3.DISASSEMBLY 3-1.Disassembly Flow .5 3-2.Panel Assy, Bottom .5 3-3.Panel Assy, Upper Section .6 3-4.“LCD Module”, “Panel Assy, Upper” .6 3-5.MAIN Board Assy .7 3-

11、6.“Case Assy, Battery”, “MAIN Board” .7 3-7.Strip, Ornamental .8 3-8.“MD Mechanism Deck (MT-MZR909-171)”, “Chassis Assy, Set” .8 3-9.Service Assy, OP (LCX-4R) .9 3-10. Holder Assy . 10 3-11. Motor, DC (Sled) (M602) . 10 3-12. “Motor, DC (Spindle) (M601)”, “Motor, DC (Over Write Head UP/DOWN) (M603)”

12、 . 11 4.TEST MODE. 12 5.ELECTRICAL ADJUSTMENTS. 18 6.DIAGRAMS 6-1.Block Diagram SERVO Section . 34 6-2.Block Diagram AUDIO Section . 35 6-3.Block Diagram KEY CONTROL/DISPLAY/ POWER SUPPLY Section . 36 6-4.Note for Printed Wiring Boards and Schematic Diagrams . 37 6-5.Printed Wiring Board Main Board

13、(Component Side) . 38 6-6.Printed Wiring Board Main Board (Conductor Side) . 39 6-7.Schematic Diagram Main Board (1/4) . 40 6-8.Schematic Diagram Main Board (2/4) . 41 6-9. Schematic Diagram Main Board (3/4) . 42 6-10. Schematic Diagram Main Board (4/4) . 43 6-11. IC Pin Function Description . 48 7.

14、EXPLODED VIEWS 7-1.Panel Section . 54 7-2.Chassis Section . 55 7-3.MD Mechanism Deck Section (MT-MZR909-171). 56 8.ELECTRICAL PARTS LIST. 57 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 SA

15、FE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. Design and specifications are subject to change without notice. When playing (Unit: approx.hours )(JEITA1) BatteriesSP Stereo LP2 Stereo LP4 Stereo NH-14WM

16、nickel metal hydride rechargeable battery2) 242731 LR6 (SG) Sony alkaline dry battery3) 344045 NH-14WM nickel metal hydride rechargeable battery2) + One LR6 (SG)3) 647584 1)Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) standard. 2)When us

17、ing a 100% fully charged rechargeable battery. 3)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan) On power sources Use house current, nickel metal hydride rechargeable battery, LR6 (size AA) battery. or car battery. For use in your house:For the supplied battery charging

18、 stand, use the AC power adaptor supplied with this recorder. Do not use any other AC power adaptor since it may cause the recorder to malfunction. Polarity of the plug AC power adaptor (1) Headphones/earphones with a remote control (1) Battery charging stand (Assembly needed) (1) Rechargeable batte

19、ry (1) Dry battery case (1) Rechargeable battery carrying case (1) Carrying pouch/carrying case with a belt clip (1) AC plug adaptor (Except HongKong model) (1) Optical cable (1) Supplied accessories 3)Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Ass

20、ociation) standard. 4)When using a 100% fully charged rechargeable battery. 5)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). 本资料由视听皮带资源库 收集整理提供 3 MZ-R909 NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer e

21、lectro- static 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 also use the procedure in the printed matter which is included in the repair parts. The flexibl

22、e board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-4R) The laser diode i

23、n the optical pick-up block may suffer electro- static break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform mea- sures against electrostatic break-down sufficiently before the op- eration. The flexible board is easily damaged and should b

24、e handled with care. OPTICAL PICK-UP FLEXIBLE BOARD SECTION 1 SERVICING NOTES 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, fix a convex part of the open/close detect switch (S806 on MAIN board) with a tape in adva

25、nce. Handle the FLEXIBLE board (overwrite head) with care, as it has been soldered directly to the MAIN board. In repairing the component side of MAIN board, connect the FLEXIBLE board (overwrite head) and the MAIN board with the lead wires in advance. (See page 7) laser-tap upper panel assy MAIN bo

26、ard Tape S806 FLEXIBLE board (Over write head) Replacement of CXD2671-206GA (IC801) used in this set re- quires a special tool. The shipment data will be cleared when the NV is reset. There- fore, change the adjusted values following the Change of Ad- justed Values immediately after the NV was reset

27、. (See page 18) If the nonvolatile memory was replaced on the set, the modified program data must be written to the nonvolatile memory. In such a case, write the modified data that meets the microcomputer version following the patch data rewriting procedure at the replacement of nonvolatile memory.

28、(See page 23) 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. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur- ing repairing. Do not touch the sold

29、ering 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 ra- diation exposure. UN

30、LEADED 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 the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following

31、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 slightly longer time. Soldering irons using a temperature regulator should be set to about 350 C . Caution

32、: 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

33、solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. 本资料由视听皮带资源库 收集整理提供 4 MZ-R909 SECTION 2 GENERAL This section is extracted from instruction manual. 8 Looking at controls See pages in ( ) for more details. The recorder A Display window (11) (32) (

34、45) (55) (70) B T MARK button (39) (56) (67) C END SEARCH button (23) (31) (60) D Battery compartment (19) E REC (record) switch (23) (28) F HOLD switch (at the rear) (20) (74) G Terminals for attaching dry battery case (20) H DC IN 3V jack (19) (22) I OPEN button (21) J N (play/enter) button (23) (

35、25) (56) X (pause) button (23) (25) (36) (43) (56) ./ (REW/FF) buttons (23) (25) (32) (43) (56) (68) x (stop)/CHG button (21) (23) (25) (40) (48) (56) K GROUP/CANCEL button (31) (43) (56) (61) L Jog dial (MENU/ENTER) (11) (29) (40) (42) (56) (70) M LINE IN (OPT) jack (22) (28) N MIC (PLUG IN POWER)

36、jack (34) The MIC (PLUG IN POWER) jack has a tactile dot. O VOL +/ button (25) (56) The VOL +/ button has a tactile dot. P i (headphones/earphones)/LINE OUT jack (20) (40) (53) 1 2 3 4 5 6 qg qh qf qs qa qd 9 8 7 J 9 The display window of the recorder A Character information display (11) (37) (45) (

37、55) (70) Displays the disc and track names, date, error messages, track numbers, etc. B Group indication (31) (43) (57) C Alarm indication (70) D Disc indication (32) (45) (55) (70) Shows that the disc is rotating for recording, playing or editing an MD. E Play mode indication (45) Shows the play mo

38、de (shuffle play, program play, repeat play, etc.) of the MD. F Battery indication (19) (75) Shows approximate battery condition. G SYNC (synchro-recording) indication (32) H Level meter (36) (45) I STEREO (SP stereo), LP2 (LP2 stereo), LP4 (LP4 stereo), MONO (monaural) indication (29) J Pause indic

39、ation K Sound indication (48) Lights up when Digital Sound Preset is on. L REC indication (23) (36) Lights up while recording. When flashing, the recorder is in record standby mode. 1324567 qsqaq;98 10 The headphones/earphones with a remote control A DISPLAY button (31) (38) (42) (53) (58) (71) B PL

40、AYMODE button (44) (47) (58) C RPT/ENT (repeat/enter) button (47) (49) D SOUND button (49) E Clip F X (pause) button (25) (42) (58) (61) G Control (./N) (25) (31) (42) (49) (58) (71) N : play, AMS, FF . : REW Turn or turn and hold to play, fast forward, rewind, etc. H Control (VOL +/) (25) (58) Pull

41、 and turn to adjust the volume. I Display window (38) (47) (71) J HOLD switch (20) (74) K x (stop) button1) (25) (31) (42) (58) (71) 1)May be used as the “Enter” button, depending on the function. The display window of the remote control A Track number display (38) (47) (71) B Character information

42、display (38) (47) (53) (71) C Disc indication (38) (47) (71) D Alarm indication (71) E Play mode indication (47) F Battery level indication (38) (47) (71) G REC indication (23) (38) H SOUND indication (49) + A B C DE K F IJ G H F HG ABCDE 本资料由视听皮带资源库 收集整理提供 5 MZ-R909 This set can be disassembled in

43、the order shown below. 3-1.DISASSEMBLY FLOW SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 3-2.PANEL ASSY, BOTTOM 3-2. Panel Assy, Bottom 3-3. Panel Assy, Upper Section Set 3-4. “LCD Module”, “Panel Assy, Upper” 3-6. “Case Assy, Battery”, “Main Board” 3-8.

44、 “MD Mechanism Deck (MT-MZR909-171)”, “Chassis Assy, Set” 3-7. Strip, Ornamental 3-5. Main Board Assy 3-9. Service Assy, OP (LCX-4R) 3-10. Holder Assy 3-11. Motor, DC (Sled) (M602) 3-12. “Motor, DC (Spindle) (M601)”, “Motor, DC (Over Write Head Up/Down) (M603)” S801 1Open the lid, battery case. 4Clo

45、se the battery terminal (plus). 6Remove the “panel assy, bottom” in the direction of the arrow A. knob (hold) 3lid, battery case 2claw A 5two ES lock screws 5three ES lock screws Note: On installation, adjust the position of both switch (S801) and knobs(hold). 本资料由视听皮带资源库 收集整理提供 6 MZ-R909 3-3.PANEL ASSY, UPPER SECTION 3-4.“LCD MODULE”, “PANEL ASSY, UPPER” 4panel assy, upper 1flexible board (CN801) 2Push the button (open). 3two ES lock screws 3two ES lock screws 1four scre