Sony MZ-R37 specifications Specifications

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SERVICE MANUAL

Ver 1.4 2001. 01 With SUPPLEMENT-1(9-926-952-81)

With SUPPLEMENT-2(9-926-952-82)

US and foreign patents licensed from Dolby Laboratories Licensing Corporation.

MZ-R37

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Tourist Model

Model Name Using Similar Mechanism

MZ-R55

 

 

MiniDisc Mechanism Type

MT-MZR37-161

 

 

Optical Pick-up Type

KMS-280A

 

 

SPECIFICATIONS

System

Audio playing system

MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: λ = 780 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 pick-up block with 7 mm aperture.)

Recording and playback time Maximum 74 minutes (MDW-74, stereo recording)

Maximum 148 minutes (MDW-74, monaural recording)

Revolutions

400 rpm to 900 rpm (CLV) Error correction

Advanced Cross Interleave Reed Solomon Code (ACIRC)

Sampling frequency 44.1 kHz

Sampling rate converter

Input: 32 kHz / 44.1 kHz / 48 kHz Coding

Adaptive TRansform Acoustic Coding (ATRAC) 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 Wow and Flutter Below measurable limit Inputs

MIC (PLUG IN POWER): stereo mini-jack, 0.35–1.38 mV

(OPTICAL) LINE IN: stereo mini-jack with optical (digital) in

Line in: 69–194 mV

Optical (digital) in: wave length 660 nm

Outputs

PHONES/REMOTE: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 16 ohm

LINE OUT: stereo mini-jack, 194 mV, load impedance 10 kilohm or greater

General

Power requirements

Sony AC Power Adaptor (supplied) connected at the DC IN 4.5 V jack:

120 V AC, 60 Hz (US, Canadian model) 220–230 V AC, 50/60 Hz (AEP model) 230–240 V AC, 50 Hz (UK model)

240 V AC, 50 Hz (Australian and New Zealand model) Two nickel-cadmium rechargeable batteries

NC-AA (supplied)

Two LR6 (size AA) alkaline batteries (not supplied)

– Continued on next page –

PORTABLE MINIDISC RECORDER

MICROFILM

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Contents MZ-R37 SpecificationsBattery operation time1 Flexible Circuit Board RepairingServicing Note General Test Mode Setting Section SELF-DIAGNOSTICOperation in Test Mode Setting Releasing the Test ModeDescription of Error Indication Codes Clearing the Error Indication Code and Total Recording TimeProblem Indication code Meaning of code Description Description of History Codes History code numberPANEL, Bottom Section DisassemblyPanel SV ASSY, Front LCD Module ConnectorPanel SV ASSY, Upper Main BoardOP Block Assy Cabinet SV AssyHolder Assy Test Mode Structure Test ModeManual Mode Audio Mode How to Transfer in the Audio Mode System Gain ModeHow to Check in the Audio Mode How to Adjust in the Audio ModeHow to Check in the Mechanism Mode Power Mode Mode No Test Description Indication value Remark Overall Adjustment Mode Assy ModeHow to Adjust in Assy Mode How to Check in the Power ModeMO Automatic Adjustment Hybrid MODE, KEY Check ModeMode No Adjustment Description Precautions for Adjustment Section Electrical AdjustmentsLaser Power Check MO Traverse AdjustmentLOW Reflection CD Traverse Adjustment RF waveform CD RF Level CheckIC PIN Descriptions Section DiagramsFili AvssFilo XlrfSDI2 ClkcsSDO2 SCK2KEY3 LCD ResetKEY2 KEY1MZ-R37 Block Diagram Servo SectionControl B Keyrmc Block Diagram System Control SectionAudio SectionSemiconductor Location Printed Wiring BoardWaveforms IC801 $¼ MZ-R37 IC303 AN7535SA-E1 IC Block Diagrams IC301 AK4517-VQ-LIC304 IC802 8110ANP-DSB-T2IC803 AK6420AM-E IC761 BA6966FV-E2IC901 MPC18A35FTA Panel Section Section Exploded ViewsCabinet SV Assy Section 59 4-216-592-01 Terminal A, Battery DetectionMOTOR, DC Loading Mechanism Deck Section MT-MZR37-161Motor Block ASSY, Sled Sled Section Electrical Parts ListMain Elect Chip TantalumDiode RN5RZ25AA-TR Metal ChipCXA2523AR CXD2652ARDescription Remark R202 218-875-11 SWITCH, Slide Synchro REC SwitchSWITCH, KEY Board Display Accessories & Packing MaterialsADAPTOR, AC AC-E455A Accessories & Packing MaterialsADAPTOR, Conversion 2P Schematic Diagram Table of Contents Printed Wiring BoardCorrections Side a Printed Wiring Board Except US ModelMain Board Printed Wiring Board US Model Location SemiconductorMZ-R37 IC801 r Schematic Diagram Main /3MZ-R37 Electrical Parts List CAP-CHIP JFJ7001 Line in Optical Diode MA8140-M-TXJack PHONES/REMOTE Transistor XP4313-TX.SORES-CHIP Network Resistor FILTER, Chip EMI Common ModeFilter OP Service Assy Electrical Parts LIST/MISCELLANEOUS Incorrect CorrectIncorrect Correct Head ASSY, OP