Sony MZ-R91 - Manual
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Table of Contents:
- Page 2 – Flexible Circuit Board Repairing; • Keep the temperature of the soldering iron around 270 ̊C dur-; Notes on chip component replacement; CAUTION
- Page 3 – SECTION 1; • When repairing this device with the power on, if you remove
- Page 4 – • LOCATION OF CONTROLS; – The recorder –; – The display window of the recorder –
- Page 5 – SECTION 3; • This set can be disassembled in the order shown below.; UPPER PANEL SECTION
- Page 7 – BELT ASSY, ORNAMENTAL
- Page 11 – xxxxxxxxx
- Page 12 – M a n u a l
- Page 13 – L r e f P w 0 1
- Page 18 – • Setting method of NV reset; R e s N V
- Page 20 – S e t T m p; CD Automatic Adjustment item
- Page 21 – M O O K; R e s u m e; R e s C l r; MO Automatic Adjustment item
- Page 22 – BLOCK DIAGRAM – SERVO Section –
- Page 23 – BLOCK DIAGRAM – KEY CONTROL/DISPLAY/POWER SUPPLY Section –
- Page 24 – PRINTED WIRING BOARD; • Semiconductor
- Page 25 – SCHEMATIC DIAGRAM; See page 38 for Waveforms.
- Page 30 – IC PIN FUNCTION DESCRIPTION; Pin Name
- Page 39 – CHASSIS SECTION
- Page 41 – MAIN
- Page 46 – Sony Corporation
- Page 47 – SERVICE MANUAL; File this supplement with the service manual.
- Page 48 – Addition of Korean Model; • EXPLODED VIEWS
- Page 49 – Correction; EXPLODED VIEWS; Page
- Page 50 – • ELECTRICAL PARTS LIST
SERVICE MANUAL
PORTABLE MINIDISC RECORDER
US Model
Canadian Model
Australian Model
Chinese Model
MZ-R90
AEP Model
UK Model
E Model
Tourist Model
MZ-R90/R91
SPECIFICATIONS
MZ-R90/R91
US and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
Photo: MZ-R91 (Blue type)
Syst em
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
Wavelength:
λ
= 790 nm
Emission duration: continuous
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
Maximum 80 minutes (MDW-80, stereo
recording)
Maximum 160 minutes (MDW-80, monaural
recording)
Maximum 74 minutes (MDW-74, stereo
recording)
Maximum 148 minutes (MDW-74, monaural
recording)
Revolutions
400 rpm to 1,800 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
Wo w and Flutter
Below measurable limit
Inputs
Microphone: stereo mini-jack, 0.35–1.38 mV
Line in: stereo mini-jack, 69–194 mV
Optical (Digital) in: optical (digital) mini-jack
Outputs
i
/LINE OUT*: stereo mini-jack
Headphones: maximum output level 5 mV +
5 mV, load impedance 16 ohm
LINE OUT: 194 mV, load impedance 10
kilohm
* The
i
/LINE OUT jack connects either
headphones or a line cable.
General
Power requirements
Sony AC Power Adaptor (supplied) connected
at the DC IN 3 V jack:
220–230 V AC, 50/60 Hz (European model)
120 V AC, 50 Hz (Canadian model)
100–240 V AC, 50/60 Hz (Other models)
Nickel metal hydride rechargeable battery NH-
14WM (supplied)
LR6 (size AA) alkaline battery (not supplied)
Battery operation time
Dimensions
MZ-R90
Approx. 78.9
×
17.3
×
72.0 mm (w/h/d)
(3
1
/
8
×
11
/
16
×
2
7
/
8
in.)
MZ-R91
Approx. 78.9
×
18.0
×
72.0 mm (w/h/d)
(3
1
/
8
×
23
/
32
×
2
7
/
8
in.)
Mass
MZ-R90
Approx. 105 g (3.7 oz) the recorder only
Approx. 148 g (5.2 oz) incl. a recordable MD,
and NH-14WM nickel metal hydride
rechargeable battery
MZ-R91
Approx. 110 g (3.8 oz) the recorder only
Approx. 153 g (5.4 oz) incl. a recordable MD,
and NH-14WM nickel metal hydride
rechargeable battery
Supplied accessories
AC power adaptor (1)
Headphones with a remote control (1) (RM-MZ2S)
NH-14WM nickel metal hydride rechargeable
battery (1)
Dry battery case (1)
Rechargeable battery carrying case (1)
Carrying pouch (1)
A
Design and specifications are subject to
change without notice.
C plug adaptor (1)
Batter y life
1)
Batteries
Recording
2)
Playback
NH-14WM
nickel metal
hydride
rechargeable
battery
Approx.
6.5 hours
Approx.
12 hours
LR6 (SG)
(size AA)
Sony alkaline
dry battery
Approx.
4 hours
Approx.
16.5
hours
NH-14WM
nickel metal
hydride
rechargeable
battery
+ One LR6
(SG) (size AA)
Approx.
14.5 hours
Approx.
29 hour
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.
Model Name Using Similar Mechanism
NEW
Mechanism Type
MT-MZR90-165
Optical Pick-up Name
LCX-2R
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Summary
– 2 – TABLE OF CONTENTS 1. SERVICING NOTES ............................................... 3 2. GENERAL ................................................................... 4 3. DISASSEMBLY ......................................................... 5 4. TEST MODE .........................................
– 3 – NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro-static break-down because of the potential difference generatedby the charged electrostatic load, etc. on clothing and the humanbody.During repair, pay attention to electrost...
– 4 – SECTION 2 GENERAL • LOCATION OF CONTROLS – The recorder – 1 2 3 5 4 6 7 8 9 qd 0 qa qs qf qg ql qh qj qk 1 9 2 3 4 5 6 7 8 0 1 3 2 6 7 0 8 9 qa qs qd qf 5 4 1 x (stop) /CHARGE button 2 Display window 3 REC indicator 4 DC IN 3V jack 5 Jog lever 6 i /LINE OUT (headphones/line out) jack 7 MIC (PL...
