SONY MZ-R910 维修电路图.pdf

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1、SERVICE MANUAL PORTABLE MINIDISC RECORDER Hong Kong Model Tourist Model MZ-R910 US and foreign patents licensed from Dolby Laboratories. Continued on next page Model Name Using Similar MechanismNEW Mechanism TypeMT-MZR910-180 Optical Pick-up NameLCX-5RV Ver 1.0 2002. 06 9-874-055-01Sony Corporation

2、2002F0200-1Personal Audio Company C 2002.06Published by Sony Engineering Corporation Audio playing system MiniDisc digital audio system Laser diode properties Material:GaAlAs Wevelength : =790nm Emissin duration : continuous Laser output : less than 44.6 W (This output is the value measured at a dis

3、tance of 200 mm from the lens surface on the optial pick-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 382 rpm to 2,700 rpm (CLV) Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) S

4、ampling frequency 44.1 kHz Sampling rate converter Input : 32 kHz/44.1 kHz/48 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding) ATRAC3 - LP2/LP4 Modulation system EFM (Eight to Fourteer Modulation) Frequency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limit Inputs 1) MIC : ste

5、rto mini-jack (minimum input level 0.25 mV) Line in : stereo mini-jack for anolog input (minimum input level 49 mV) optical (digital) mini-jack for optical (digital) input Outputs i/LINE OUT 2) : stereo mini-jack (dedicated remote control jack) / 194 mv(10 kohm) Maximum output(DC) 2) Headphones : 5

6、mW + 5 mW(16 ohm) Power requirements Sony AC Power Adaptor connected at the DC IN 3V jack (country model in parentheses) : 230 - 240 V AC, 50 Hz (Hong Kong) 100 - 240 V AC, 50/60 Hz (Tourist) The recorder : Nickel metal hydride rechargeable battery NH-14WM(A) 1.2V 1350 mAh (MIN) Ni-MH LR6 (SG) alkal

7、ine battery Battery charging stand: AC power adaptor DC 3V Dimensions Approx.78.9 x 72.0 x17.1 mm (w/h/d) (3 1/8 x 2 7/8 x 11/16 in.) SPECIFICATIONS 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MZ-R910 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may resul

8、t in hazardous ra- diation exposure. 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

9、. 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 or unsoldering. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contain

10、s 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 solder. Ordinary soldering irons can

11、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: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! Strong viscosity

12、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. SAFETY-RELATED COMPON

13、ENT 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 PUB- LISHED BY SONY. Battery life When

14、recording (Unit: approxi.hours)(JEITA1) BatteriesSP Stereo LP2 Stereo LP4 Stereo Nickel metal hydride rechargeable battery2) 121721 LR6 (SG) Sony alkaline dry battery3) 121923 Nickel metal hydride rechargeable battery + One LR6 (SG) 304352 1)Measured in accordance with the JEITA (Japan Electronics a

15、nd Information Technology Industries Association) standard. 2)When using a 100% fully charged nickel metal hydride rechargeable battery (NH- 14WM(A). 3)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). When playing (Unit BatteriesSP Stereo LP2 Stereo LP4 Stereo Nickel me

16、tal hydride rechargeable battery2) 303842 LR6 (SG) Sony alkaline dry battery3) 445262 Nickel metal hydride rechargeable battery2) + One LR6 (SG)3) 7995110 1)Measured in accordance woth the JEITA (Japan Electronics and Information Technology Industries Association) standard. 2)When using a 100% fully

17、 charged nickel metal hydriderechargeable battery (NH- 14WM(A). 3)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan) : approxi.hours)(JEITA1) Mass Approx. 108g (3.8 oz) the recorder only 1) The LINE IN (OPT) jack is used to connect either a digital (optical) cable or a lin

18、e (analog) cable. 2) The i/LINE OUT jack connects either headphones/earphones or a line cable. Design and specitications are subjext to change without notice. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MZ-R910 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .6 3-2.Panel Ass

19、y, Bottom .6 3-3.Panel Assy, Upper Section .7 3-4.“LCD Module”, “Panel Assy,Upper” .7 3-5.MAIN Board Assy .8 3-6.“Case Assy, Battery”, “MAIN Board” .8 3-7.Strip, Ornamental .9 3-8.“MD Mechanism Desk (MT-MZR910-180)”, “Chassis Assy, Set” .9 3-9.Service Assy, OP (LCX-5RV). 10 3-10. Holder Assy . 10 3-

20、11. Motor, DC (Sled) (M602) . 11 3-12. “Motor, DC (Spindle) (M601)”, “Motor, DC (Over Write Head UP/DOWN) (M603)” . 12 4.TEST MODE. 13 5.ELECTRICAL ADJUSTMENTS. 19 6.DIAGRAMS 6-1.Note for Printed Wiring Board and Schematic Diagrams . 44 6-2.Block Diagram SERVO Section . 46 6-3.Block Diagram AUDIO Se

21、ction . 47 6-4.Block Diagram DISPLAY/KEY CONTROL/ POWER SUPPLY Section . 48 6-5.Printed Wiring Board MAIN Board (Component Side) . 49 6-6.Printed Wiring Board MAIN Board (Conductor Side) . 50 6-7.Schematic Diagram MAIN Board (1/4) . 51 6-8.Schematic Diagram MAIN Board (2/4) . 52 6-9.Schematic Diagra

22、m MAIN Board (3/4) . 53 6-10. Schematic Diagram MAIN Board (4/4) . 54 6-11. IC Pin Function Description . 60 7.EXPLODED VIEWS 7-1.Panel Section . 67 7-2.Chassis Section . 68 7-3.MD Mechanism Deck Section (MT-MZR910-180). 69 8.ELECTRICAL PARTS LIST. 70 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-R910 NOTES ON

23、 HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- 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 brea

24、k-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 Never look into the laser diode emission from right above when checking it for adjustment. It is fe

25、ared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-5RV) The laser diode in 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 elec

26、trostatic break-down sufficiently before the op- eration. The flexible board is easily damaged and should be handled with care. OPTICAL PICK-UP FLEXIBLE BOARD SECTION 1 SERVICING NOTES In performing the repair with the power supplied to the set, re- moving the MAIN board causes the set to be disable

27、d. In such a case, fix a convex part of the open/close detect switch (S804 on MAIN board) with a tape in advance. Handle the FLEXIBLE board (over write 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 (over

28、 write head) and the MAIN board with the lead wires in advance. (See page 8) laser-tap upper panel assy MAIN board Tape S804 FLEXIBLE board (Over write head) The shipment data will be cleared when the NV is reset. There- fore, change the NV adjusted values following the Change of NV Adjusted Values

29、immediately after the NV was reset. (See page 19) This set requires the patch data in the nonvolatile memory (IC802) to be rewritten using the application, when the MAIN board or nonvolatile memory (IC802) was replaced. (See page 26) Replacement of CXD2677-204GA (IC801) uesd in this set re- quires a

30、 special tool. 5 MZ-R910 SECTION 2 GENERAL This section is extracted from instruction manual. The display window of the recorder 1 Character information display Displays the disc and track names, date, error messages, track numbers, etc. 2 Group intication 3 Disc intication Shows that the disc is ro

31、tating for recording, playing or editing an MD. 4 REC intication Lights up while recording.When flashing, the recorder is in record standby mode. 5 SYNC (synchro-recording) intication 6 Play mode intication Shows the play mode (shuffle play, program play, repeat play, etc.) of the MD 7 Level meter 8

32、 LP2 (LP2 stereo), LP4 (LP4 stereo), MONO (LP4 stereo) 9 Sound intication Lights up when Digital Sound Preset is on. 0 Battery intication Shows approximatevbattery condition. qa Melody timer intication 14325 qa9q;87 6 The headphones/earphones with a remote control 1 DISPLAY button 2 PLAY MODE button

33、 3 RPT/ENT (repeat/enter) button 4 SOUND button 5 Clip 6 X (pause) button 7 Control (./N) N : play, AMS, FF . : REW Turn or turn and hold to play, fast forward or rewind. You can quickly fast forward or rewind without listening to the play back sound. 8Control (VOLUME +/-) Pull and turn to adjust th

34、e volume. 9 Display window 0 HOLD switch qax (stop) button May be used as the Enter button, depending on the function. The display window of the remote control 1 Trak number display 2 Character information display 3 Disc indication 4 Melody timer indication 5 Play mode indication 6 Battery leavl ind

35、ication 7 REC indication 8 SOUND indication 6 87 12453 + 1 2 3 45 qa 6 9 7 8 0 Looking at controls The recorder 1 Display window 2 T MARK button 3 Battery compartment 4 END SERCH button 5 VOLUME + */- buttons * The VOLUME + button has a tactile dot. 6 Terminals for attaching dry battery case 7 DC IN

36、 3V jack 8 GROUP / CANCEL buttons 9 OPEN buttons 0 1 2 3 4 5 6 7 8 9 0 5-way control key For basic operations Press N* to play / enter. * the N buttons has a tactile dot. Press ./ to rewind / fast forward. Press X to pause. Press CHG x to stop / charge. qh i / LINE OUT jack qaJog dial (MENU / ENTER)

37、 Press to enter the menu, turn to select, and then press to enter. qs LINE IN (OPT) jack qd MIC (PLUG IN POWER)* jack * There is a tactile dot beside the MIC (PLUG IN POWER) jack qf REC (record) switch qg qh qa qs qd qf qg Hold switch (at the rear) For moving the cursor and entering selected items (

38、during text entry and other settings). 6 MZ-R910 SECTION 3 DISASSEMBLY 3-2. PANEL ASSY, BOTTOM Note: Disassemble the unit in the order as shown below. Note: Follow the disassembly procedure in the numerical order given. 3-2. Panel Assy, Bottom 3-3. Panel Assy, Upper Section Set 3-4. “LCD Module”, “P

39、anel Assy, Upper” 3-6. “Case Assy, Battery”, “Main Board” 3-8. “MD Mechanism Deck (MT-MZR910-180)”, “Chassis Assy, Set” 3-7. Strip, Ornamental 3-5. Main Board Assy 3-9. Service Assy, OP (LCX-5RV) 3-10. Holder Assy 3-11. Motor, DC (Sled) (M602) 3-12. “Motor, DC (Spindle) (M601)”, “Motor, DC (Over Wri

40、te Head Up/Down) (M603)” 3-1. DISASSEMBLY FLOW S801 1Open the lid, battery case. 4Close 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 po

41、sition of both switch (S801) and knobs(hold). 7 MZ-R910 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 1Three screws (1.7) 2Remove the LCD module in the direction of the

42、 arrow. 3Panel assy, upper 8 MZ-R910 3-5. MAIN BOARD ASSY 3-6. “CASE ASSY, BATTERY”, “MAIN BOARD” 2Case assy, battery 3Main board 1Remove the solder of terminal (minus). 1Remove the solder of terminal (plus). 3Four screws (M1.4 toothed lock) 4ES lock screw 2Flexible board (CN502) 1Remove two solders

43、 of flexible board. 6Flexible board (CN501) 5 7Main board assy 9 MZ-R910 3-8. “MD MECHANISM DECK (MT-MZR910-180)”, “CHASSIS ASSY, SET” 3-7. STRIP, ORNAMENTAL ) ) ) ) 4Two convex portions pointed with 3Three bosses 5Remove the “strip, ornamental” in the direction of arrow C. 2Open toward the directio

44、n B to disengage two bosses and convex portions pointed with *. 1Pull toward the direction A to disengage two bosses . A A B B C Boss Boss Boss Boss Note: As the “strip, ornamental” is very fragile, do not give an excessive force to the entire assy when removing it. a a a b b b 2Boss 2Boss 3MD mecha

45、nism deck (MT-MZR910-180) 1Screw (1.4) 1Screw (1.4) 5Chassis assy, set 4Spring (arm), tension 10 MZ-R910 3-9. SERVICE ASSY, OP (LCX-5RV) 4Spring, rack 3Screw (M1.4) 1Washer (0.8-2.5) 2Gear (SA) 5Screw (M1.4) 6Spring, thrust detent 8Pull off “screw, lead” 7 Over write head section Service assy, OP (LCX-5RV) 9Opening the over write head toward the direction A, remove the “service assy, OP (LCX-5RV) toward the direction B. A B Note: Do not open the entire assy forcibly, when opening the over writ