Sony MT-MZR70-165 service manual US Model, Canadian Model, AEP Model, UK Model, E Model, MZ-R70

SERVICE MANUAL	MZ-R70
	US Model
Ver 1.3 2001. 01	Canadian Model
	AEP Model
With SUPPLEMENT-1
(9-927-631-81)	UK Model
	E Model
	Australian Model
	Chinese Model
	Tourist Model
	(Photo: Silver)

US and foreign patents licensed from Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism	MZ-R90/R91
Mechanism Type	MT-MZR70-165
Optical Pick-up Name	LCX-2R

SPECIFICATIONS

System	Frequency response	Nickel cadmium rechargeable battery
Audio playing system	20 to 20,000 Hz ± 3 dB	NC-WMAA (supplied)
MiniDisc digital audio system	Wow and Flutter	LR6 (size AA) alkaline battery (not
Laser diode properties	Below measurable limit	supplied)
Material: GaAlAs	Inputs	Battery operation time
Wavelength: λ = 790 nm	Microphone: stereo mini-jack, 0.35–1.38	Battery life1)
Emission duration: continuous	mV
		Batteries		Recording2)	Playback
Laser output: less than 44.6 ∝ W	Line in: stereo mini-jack, 69–194 mV
		NC-WMAA		Approx.	Approx.
(This output is the value measured at a	Optical (Digital) in: optical (digital) mini-
		nickel cadmium		3 hours	6.5 hours
distance of 200 mm from the lens surface	jack
		rechargeable
on the optical pick-up block with 7 mm	Outputs
		battery
aperture.)	i1: stereo mini-jack, maximum output
		LR6 (size AA)		Approx.	Approx.
Recording and playback time	level 5 mW + 5 mW, load impedance 16
		Sony alkaline		3 hours3)	17 hours
Maximum 80 minutes (MDW-80, stereo	ohm
		dry battery
recording)	i2: stereo mini-jack, maximum output
Maximum 160 minutes (MDW-80,	level 5 mW + 5 mW, load impedance 16	1)	The battery life may be shorter due to
monaural recording)	ohm		operating conditions and the temperature
Maximum 74 minutes (MDW-74, stereo
	General		of the location.
recording)
		2)	When you record, use a fully charged
Maximum 148 minutes (MDW-74,	Power requirements		rechargeable battery.
monaural recording)	Sony AC Power Adaptor (supplied)
		3)	Recording time may differ according to
Revolutions	connected at the DC IN 3 V jack:		the alkaline batteries.
400 rpm to 1,800 rpm (CLV)	120 V AC, 60 Hz (US model)
Error correction	230-240 V AC, 50/60 Hz (UK and Hong
Advanced Cross Interleave Reed Solomon	Kong model)		– Continued on next page –
Code (ACIRC)	240 V AC, 50/60 Hz (Australia and New
Sampling frequency	Zealand model)
44.1 kHz	220-230 V AC, 50/60 Hz (European
Sampling rate converter	model)
Input: 32 kHz/44.1 kHz/48 kHz	220 V AC, 50 Hz (China model)
Coding	220 V AC, 50 Hz (Argentina model)
Adaptive TRansform Acoustic Coding	100-240 V AC, 50/60 Hz (Other models)
(ATRAC)
Modulation system
EFM (Eight to Fourteen Modulation)	PORTABLE MINIDISC RECORDER
Number of channels
1 monaural channel
2 stereo channels

– 1 –