sony_mz-g750,r700_ver1.0电路原理图 .pdf
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1、1 MZ-G750/R700 SERVICE MANUAL FM/AM PORTABLE MINIDISC RECORDER Model Name Using Similar MechanismNEW Mechanism TypeMT-MZR700-172 Optical Pick-up NameLCX-4R (Photo: MZ-G750) MD recorder Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs MQW Wavelength: = 790 nm
2、 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 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 Revol
3、utions 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 ATRAC (Adaptive TRansform Acoustic Coding) ATRAC3-LP2 ATRAC3-LP4 SPECIFICATIONS Modulation system EFM (Eight
4、 to Fourteen Modulation) Number of channels 2 stereo channels 1 monaural channel Frequency response 20 to 20,000 Hz 3 dB Wow and Flutter Below measurable limit Inputs Microphone: stereo mini-jack, minimum input level 0.25 mV Line in: stereo mini-jack, minimum input level 49 mV Optical (Digital) in:
5、optical (digital) mini- jack Outputs i: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohm Radio (MZ-G750) Frequency range AM: 531-1,602 kHz FM: 87.5-108.0 MHz General Power requirements Sony AC Power Adaptor (supplied) connected at the DC IN 3 V jack: 230 V AC, 50/60 Hz (AEP
6、model) 230-240 V AC, 50 Hz (UK/Hong Kong model) 100-240 V AC, 50/60 Hz (Other models) Nickel cadmium rechargeable battery NC-WMAA (supplied) LR6 (size AA) alkaline battery (not supplied) Continued on next page AEP Model UK Model Tourist Model Hong Kong Model US and foreign patents licensed from Dolb
7、y Laboratories Licensing Corporation. Ver 1.0 2001. 01 MZ-G750 PORTABLE MINIDISC RECORDER MZ-R700 Ver 1.0 2001. 01 Sony Corporation Audio Entertainment Group General Engineering Dept. 9-873-045-11 2001A0400-1 2001. 1 2 Flexible Circuit Board Repairing Keep the temperature of the soldering iron aroun
8、d 270C during 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. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus sid
9、e of a tantalum capacitor may be damaged by heat. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Battery operation time Battery life1) (MZ-G750) When recording2)(Unit: approx.hours) (EIAJ3) BatteriesSt
10、ereoLP2LP4 NC-WMAA Nickel Cadmium467.5 rechargeable battery4) LR6 (SG) Sony alkaline dry96)136)166) battery5) 1)The battery life may be shorter due to operating conditions and the temperature of the location. 2)When you record, use a fully charged rechargeable battery. 3)Measured in accordance with
11、the EIAJ (Electronic Industries Association of Japan) standard. 4)When using a 100% fully charged rechargeable battery. 5)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). 6)Recording time may differ according to the alkaline batteries. When playing(Unit: approx.hours) (
12、EIAJ1) BatteriesStereoLP2LP4 NC-WMAA Nickel Cadmium11.51416 rechargeable battery2) LR6 (SG) Sony alkaline dry364248 battery3) 1)Measured in accordance with the EIAJ (Electronic Industries Association of Japan) standard. 2)When using a 100% fully charged rechargeable battery. 3)When using a Sony LR6
13、(SG) “STAMINA” alkaline dry battery (produced in Japan). When using the radio(EIAJ1) BatteriesApprox. hours NC-WMAA Nickel Cadmium rechargeable9.5 battery2) LR6 (SG) Sony alkaline dry battery3)28.5 1)Measured in accordance with the EIAJ (Electronic Industries Association of Japan) standard. 2)When u
14、sing a 100% fully charged rechargeable battery. 3)When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). Battery life1) (MZ-R700)(Unit: approx.hours) (EIAJ2) BatteriesStereoLP2LP4 NC-WMAA Nickel CadmiumRecording467.5 rechargeable battery3)Playback1314.518 LR6 (SG) Sony alkali
15、ne dryRecording91316 battery4)Playback404653 1)The battery life may be shorter due to operating conditions and the temperature of the location. 2)Measured in accordance with the EIAJ (Electronic Industries Association of Japan) standard. 3)When using a 100% fully charged rechargeable battery. 4)When
16、 using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan). Dimensions Approx. 81 74.4 28.1 mm (w/h/d) (3 1/4 3 1 1/8 in.) without projections. Mass Approx. 118 g (4 5/32 oz) the recorder only (MZ-G750) Approx. 116 g (4.1 oz) the recorder only (MZ-R700) Supplied accessories AC power a
17、daptor (1) Headphones/earphones with a remote control (1) Optical cable (1) NC-WMAA nickel cadmium rechargeable battery (1) Rechargeable battery carrying case (1) Carrying pouch/carrying case with a belt clip (except U.S.A model) (1) Design and specifications are subject to change without notice. SA
18、FETY-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 PUBLISHED BY SONY. M
19、Z-G750/R700 3 1.SERVICING NOTE.4 2.GENERAL Looking at the Controls (MZ-G750).5 Looking at the Controls (MZ-R700).6 3.DISASSEMBLY 3-1. Panel Assy, Lower.7 3-2. Panel Assy, Upper .7 3-3. LCD Module .8 3-4. Main Board .8 3-5. MD Mechanism Deck .9 3-6. Service Assy, OP .9 3-7. Holder Assy.10 3-8. Motor
20、Flexible Board .10 3-9. Motor, DC (M602) . 11 3-10. “Motor, DC (M601)”, “Motor, DC (M603)” . 11 4.TEST MODE 4-1. Outline.12 4-2. Setting Method of Test Mode.12 4-3. Operation in Setting the Test Mode.12 4-4. Releasing the Test Mode .12 4-5. Configuration of Test Mode .13 4-6. Manual Mode .13 4-7. Ov
21、erall Adjustment Mode .14 4-8. Self-Diagnosis Result Display Mode .14 4-9. Result the Error Display Code .15 4-10. Sound Skip Check Result Display Mode .16 4-11. Key Check Mode.16 TABLE OF CONTENTS 5.ELECTRICAL ADJUSTMENTS 5-1. Outline.18 5-2. Precautions for Adjustment .18 5-3. Adjustment Sequence.
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