Sony mds jb 920 service manual

Page 1

MDS-JB920

SERVICE MANUA'L

US Model
Canadian Model
AEP Model

UK Model

MDS-J E520
MDM -5A
KMS-260A/J1 N

US and loreign patents licensed form Dolby Laboratories Model Name Using Similar Mechanism

Licensing Corporation.

MD Mechanism Type

Optical Pickvup Type

SPECIFICATIONS
System MiniDisc digital audio system Inputs
DISC Mini'Disc jack input Rated Minimum
Laser Semiconductor laser (1:780nm) type impedance input input
Emission duration: continuous ,
Laser output Less than 44,6 uWl KINE (ANALOG) phino 47 kilohrns 500 mVrms 125 mVrms
* This output is the value measured at a I 5
distance of 200 mm from the objective lens DIGITAL Square Oplical wave
surface on the Optical Pick-up Block with 7 OYI'ICAL INI optical length: - --
mm aperture. connector 660 nm
Laser diode properties Material: GaAlAs jack
REVOIUHODS (CI-V) 400 rpm I0 900 rpm DIGITAL Square Optical wave
Error correction Advanced Cross InLerleave Reed OPTICAL IN2 opflcal length: L _
Solomon Code (A CIRC) connector 660 rim
Sampling frequency 44.! kHz jack
Coding Adaptive Transform Acoustic Coding DIGITAL Phono 75 ohms 0 5 VP'P _
i (RAG . . COAXIALIN jack 220%
Modulation system EFM (English-thourteen Modulation)
Number fo channels 2 sclero channels
Frequency response 5 to 20,000 Hz :0.3 dB Outputs ' .
Signalto-noise relio Over 100 :13 during playback 135k type Rated output Load impedance
Wow and flutter Below measureble limit PHONES Stereo 28 mW 32 ohms
phone jack
LINE (ANALOG) Phone 2 Vrms Over
OUT jacks (at 50 kilohms) 10 kilohms
DIGIRAL Square 718 dBm Optical wave
OPTICAL OUT optical length:
connector 660 nm
jack
DIGITAL Phono 0.5 Vp-p 75 ohms
COAXIAL OUT jack (at 75 ohms)

MINI DISC DECK

SONY;