Sony MZ-R909 Service Manual

SERVICE MANUAL
Ver 1.0 2001. 08
US and foreign patents licensed from Dolby
Laboratories.
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs
λ
Wavelength: = 790 nm
Emission dura tion : continuous
Laser output: less than 44. 6 µW
(This output is the va lue measured at a distance
of 200 mm from the lens surface on the optical
pick-up block with 7 mm a per ture .)
Recording and playback time
When using MDW-80:
Ma ximum 160 min. in monaura l
Ma ximum 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 TRa nsform Acoust ic
Coding)
ATRAC3 — LP2
ATRAC3 — LP4
Modulation system
EFM (Eight to Fourteen Modula tion)
Number of channels
2 s ter eo channels
1 monaura l channel
Frequency response
20 to 20, 000 Hz ± 3 dB
Sony Corporation
9-873-285-01
2001H0500-1 Personal Audio Company
C 2001.8 Shinagawa Tec Service Manual Production Group
Model Name Using Similar Mechanism
Mechanism Type
Optical Pick-up Name
SPECIFICATIONS
Wow and Flutter
Below measurable limit
Inputs
Micropho ne : stereo mini-jack, minimum input
leve l 0.25 mV
Line in 1) : s tereo mini-ja ck, minimum input
leve l 49 mV
1)
Op tical (Digital) in : optical (digital) mini-ja ck
Outputs
i/LINE OUT 2)
: s tereo mini-jack
headphones/earphones: maximum output
leve l 5 mW + 5 mW, loa d impedance 16 oh m
LINE OUT: 19 4 mV, loa d impedance 10
kilohm
Power requirements
Sony AC P owe r Ada ptor connecte d a t the DC
IN 3V jack:
23 0 - 240 V AC, 50 Hz (Hong kong model)
10 0 - 240 V AC, 50 /60 Hz (Other models)
Nicke l meta l hydr ide rechageable battery NH-
14WM(A) 1.2V 1350 mAh (MIN) Ni-MH
LR6 (s ize AA) alkaline battery
3)
Dimensions
Approx. 78 .9 × 72. 0 × 17. 1 mm (w/h/d)
× 2 ×
(3 1 / 7 / 11 / in.)
8 8 16
Mass
Approx. 11 0 g (3.9 oz ) the recorder only
1)
The LINE IN (OP T) jack is used to connect
e ither a digital (optica l) cable or a line
(a nalog) cable.
2) The i/LINE OUT jack connector eithe r
headphones/earphones or a line ca ble .
3)
Measured in accordance with JEITA.
PORTABLE MINIDISC RECORDER
MZ-R909
Tourist Model
Battery operating time
1)
Battery life
When recording 2)
(Unit: approx hours)(JE ITA
Batteries SP
Stere o
NH-14WM 8.5
nickel metal
hydride
rechargeable
4)
battery
LR6 (S G) 7.5
S ony alkaline
dry battery 5)
NH-14WM 20
nicke l meta l
hydride
rechargeable
4)
battery
+ One LR6
(SG) 5)
1) The battery life may be shorter due to operating
conditions and the tempreture of the location.
2)
Whe n you record, use a fully charged
rechargeable ba tter y. Recording time may
diffe r according to the a lka line batteries.
– Continued on next page –
E Model
NEW
MT-MZR909-171
LCX-4R
3)
)
LP2 LP4
Stere o Stereo
11 14
12 15
28 37