Sony mz g 750 service manual

Page 1

MZ-G750/R7OO

SERVICE MANUAL

Ver1.1 2001. 02

(Photo: MZ-G750)

US Model
Canadian Model
AEP Model

UK Model

E Model
Australian Model
Tourist Model
Chinese Model

US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.

Model Name Using Similar Mechanism NEW

MD recorder
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs MQW
Wavelength: A = 790 nm
Emission duration: continuous
Laser output: le than 44.6 uW
(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-SO
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

ATRAC (Adaptive TRansform Acoustic

Coding)

ATRAC3-LP2

ATRAC3-LP4

9-873-045-12 Sony Corporation
2001 B0400-1 Audio Entertainment Group
© 2001. 2 General Engineering Dept.

Mechanism Type

MT-MZFI700-1 72

Optical Pick-up Name

LCX-4 Ft

SPECIFICATIONS

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

Microphone: stereo mini-jack, minimum

input level 0.25 mV

Line in: stereo mini-jack, minimum input

level 49 mV

Optical (Digital) in: optical (digital) mini-

jack

Outputs

0.: stereo mini-jack, maximum output level

5 mW + 5 mW, load impedance 16 ohm

Radio (MZ-G750)

Frequency range

AM: 530»1,710 kHz (US,Canada, and
Central and South America models)
531-1,602 kHz (Other models)

FM: 875-1080 MHz

General
Power requirements
Sony AC Power Adaptor (supplied)
connected at the DC IN 3 V jack:
120 V AC, 60 Hz (U.S.A.,Canadian and
Taiwan model)
230 V AC, 50/60 Hz (AEP model)
240 V AC, 50 Hz (Australian model)
220 V AC, 50 Hz (Chinese model)
230-240 V AC, 50 Hz (UK and Hong
Kong model)
220 V AC, 50 Hz (Argentina model)
110/220 V AC, 60 Hz (Korean 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 -

FM/AM PORTABLE MINIDISC RECORDER

MZ-G750

PORTABLE MINIDISC RECORDER

MZ-R7OO

SONXQ

Page 2

MZ-G750/ R700

Battery operation time
Battery IiieU (MZ-G750)

When recording?) (Unit: approx.hours) (EIAJJ')

Batteries Stereo LP2 LP4
NC-WMAA Nickel Cadmium 4 6 7.5
rechargeable battery)

LR6 (SG) Sony alkaline dry 9" 131 165'
battery5'

H The battery life may be shorter due to operating conditions and the
temperature of the location.

1! When you record, use a fully charged rechargeable battery.

31 Measured in accordance with the EIAJ (Electronic Industries
Association of Japan) standard.

41 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) (EIAJI')
Batteries Stereo LP2 LP4
NC-WMAA Nickel Cadmium 11.5 14 16
rechargeable battery?)

LR6 (SG) Sony alkaline dry 36 42 48
battery"

H Measured in accordance with the EIAJ (Electronic Industries
Association of Japan) standard.

1! When using a 100% fully charged rechargeable battery.

31 When using a Sony LR6 (SG) STAMINA alkaline dry battery
(produced in Japan).

When using the radio (EIAJH)

Batteries Approx. hours
NC-WMAA Nickel Cadmium rechargeable 9.5

batterylt

LR6 (SG) Sony alkaline dry battery" 28.5

'i Measured in accordance with the EIAJ (Electronic Industries
Association of Japan) standard.

11 When using a 100% fully charged rechargeable battery.

3) When using a Sony LR6 (SG) STAMINA alkaline dry battery
(produced in Japan).

Battery liiei> (MZ-R700) (Unit: approx.hours) (EIAJZ')

Batteries Stereo LP2 LP4
NC-WMAA Nickel Cadmium Recording 4 6 7.5
rechargeable battery1 Playback 13 14.5 18
LR6 (SG) Sony alkaline dry Recording 9 13 16
battery Playback 40 46 53

'1 The battery life may be shorter due to operating conditions and the
temperature of the location.

11 Me ured in accordance with the EIAJ (Electronic Industries
Association of Japan) standard.

1 When using a 100% fully charged rechargeable battery.

I When using a Sony LR6 (SG) "STAMINA" alkaline dry battery
(produced in Japan).

Dimensions

Approx. 81 X 28.1 X 74.4 mm (w/h/d)

(3 1/4 X 1 [/8 X 3 in.) without projections.

MESS

Approx. 118 g (4.2 oz) the recorder only (MZ-G750)

Approx. 116 g (4.1 oz) the recorder only (MZ-R700)

Supplied accessories

AC power adaptor (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.

Flexible Circuit Board Repairing

I Keep the temperature of the soldering iron around 270°C
during repairing.

I Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

I Be careful not to apply force on the conductor when soldering
or unsoldering.

Notes on chip component replacement

I Never reuse a disconnected chip component.

I Notice that the minus side 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.

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BY MARK A 0R DOTTED LINE
WITH MARK A 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.

ATTENTION Au COMPOSANT AYANT RAPPORT
A LA SECURITE!!

LES COMPOSANTS IDENTIFIES PAR UNE MARQUE A SUR
LES DIAGRAMMES SCHEMATIQUES ET LA LISTE DES
PIECES SONT CRITIQUES POUR LA SECURITE DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIECES SONY DONT LES NUMERos SONT
DCNNEs DANS CE MANUEL 0U DANS LES SUPPLEMENTS
PUBLIEs PAR SONY.