索尼 sony_MZ-R909_service_manual 电路图 维修手册.pdf

SERVICE MANUAL d impedance 10 Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm E mission d ura tion : con tinuous Laser output: less than 44.6 µ W (This output is the value measured at a distance of 200 mm from the lens surface on the optical 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 350 rpm to 2,800 rpm (CLV) Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Sampling rate converter Input: 32 kHz/44. 1 kHz/48 kHz Coding A TRAC (Adaptive TRansform Acoustic Coding) AT R A C 3 L P 2 AT R A C 3 L P 4 Modulation system EFM (Eight to Fourteen Modula tion) Number of channels 2 stereo channels 1 monaural channel Frequency response 20 to 20, 000 Hz ± 3 dB Below measurable limit Inputs Microphone : stereo mini-jack, minimum input leve l 0.25 mV Line in 1) : stereo mini-jack, minimum input leve l 49 mV Optical (Digital) in 1) : optical (digital) mini-jack Outputs i/LINE OUT 2) : stereo mini-jack headphones/earphones: maximum output level 5 mW + 5 mW, load impedance 16 ohm LINE OUT: 194 mV, loa kilohm Wow and Flutter Power requirements Sony AC Power Adaptor connected at the DC IN 3V jack: 23 0 - 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 × 17. 1 mm (w/h/d) (3 1 /8 × 2 7 /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. Battery operating time Battery life 1) When recording 2) (Unit: approx hours)(JE IT A 3) ) 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 batteries. Batteries SP Stereo LP2 Stereo LP4 Stereo NH-14WM nickel metal hydride rechargeable battery 4) 8.5 11 14 LR6 (SG) Sony alkaline dry battery 5) 7.5 12 15 NH-14WM nickel metal hydride rechargeable battery 4) + One LR6 (SG) 5) 20 28 37 PORTABLE MINIDISC RECORDER E Model Tourist Model SPECIFICATIONS MZ-R909 US and foreign patents licensed from Dolby Laboratories. Continued on next page Model Name Using Similar Mechanism NEW Mechanism T ype MT -MZR909-171 Optical Pick-up Name LCX-4R Ver 1.0 2001. 08 9-873-285-01 Sony Corporation 2001H0500-1 Personal Audio Company C 2001.8 Shinagawa Tec Service Manual Production Group2 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 3-6. “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)” . 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 (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. 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 SAFE 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 )(JE ITA 1) ) Batteries SP Stereo LP2 Stereo LP4 Stereo NH-14WM nickel metal hydride rechargeable battery 2) 24 27 31 LR6 (SG) Sony alkaline dry battery 3) 34 40 45 NH-14WM nickel metal hydride rechargeable battery 2) + One LR6 (SG) 3) 64 75 84 1) Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) stan dard. 2) When using 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 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 adap tor (1) Headphones/earphones with a remote control (1) Battery charging stand (Assembly needed) (1) Rechargeable battery (1) Dry battery case (1) Rechargeable battery carrying cas e (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 Association) standard. 4) Whe n using a 100 % fully charged rechargeable battery. 5) When us ing a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan).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 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 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 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 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 electrostatic 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, 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 advance. 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 board 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. (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. (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 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. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. 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 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 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 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.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) (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) JN (play/enter) button (23) (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) jack (34) The MIC (PLUG IN POWER) jack has a tactile dot. O VOL +/ button (25) (56) The VOL +/ button has a tactile dot. Pi (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) (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 mode (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 indication 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. 13 24567 qs qa q; 9 8 10 The headphones/earphones with a remote control A DISPLAY button (31) (38) (42) (53) (58) (71) B PLAYMODE button (44) (47) (58) C RPT/ENT (repeat/enter) button (47) (49) D SOUND button (49) E Clip FX (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 and turn to adjust the volume. I Display window (38) (47) (71) J HOLD switch (20) (74) Kx (stop) button 1)(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 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) + ABCDE K F IJ G H F H G A BC DE5 MZ-R909 This set can be disassembled in 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. “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 1 Open the lid, battery case. 4 Close the battery terminal (plus). 6 Remove the “panel assy, bottom” in the direction of the arrow A. knob (hold) 3 lid, battery case 2 claw A 5 two ES lock screws 5 three ES lock screws Note: On installation, adjus