|
|
PDF MDS-JE770 Data sheet ( Hoja de datos )
| Número de pieza | MDS-JE770 | |
| Descripción | MINIDISC DECK SERVICE MANUAL | |
| Fabricantes | Sony | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MDS-JE770 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
SERVICE MANUAL
Ver 1.0 2001. 05
MDS-JE770
AEP Model
UK Model
E Model
Foreign patents licensed form Dolby Laboratories
Licensing Corporation.
Model Name Using Similar Mechanism
MD Mechanism Type
Optical Pick-up Type
MDS-S50
MDM-7A
KMS-260B/260E
SPECIFICATIONS
System
Disc
Laser
Laser output
MiniDisc digital audio
system
MiniDisc
Semiconductor laser
( λ = 780 nm) Emission
duration: continuous
MAX 44.6 µW1)
1) This output is the value measured at a distance of
200 mm from the objective lens surface on the
Optical Pick-up Block with 7 mm aperture.
Laser diode
Revolutions (CLV)
Error correction
Sampling frequency
Coding
Modulation system
Number of channels
Frequency response
Signal-to-noise ratio
Material: GaAlAs
400 rpm to 900 rpm
ACIRC (Advanced Cross
Interleave Reed Solomon
Code)
44.1 kHz
ATRAC (Adaptive
TRansform Acoustic
Coding)/ATRAC 3
EFM (Eight-to-Fourteen
Modulation)
2 stereo channels
5 to 20,000 Hz ±0.3 dB
Over 98 dB during play
Wow and flutter
Below measurable limit
I npu ts
ANALOG IN
DIGITAL OPTICAL IN
DIGITAL COAXIAL IN
Jack type: phono
Impedance: 47 kilohms
Rated input: 500 mVrms
Minimum input:
125 mVrms
Connector type: square
optical
Impedance: 660 nm
(optical wave length)
(European model only)
Jack type: phono
Impedance: 75 ohms
Rated input: 0.5 Vp-p,
±20 %
Ou tputs
PHONES
Jack type: stereo phone
Rated output: 28 mW
Load impedance: 32 ohms
ANALOG OUT
Jack type: phono
Rated output: 2 Vrms (at
50 kilohms)
Load impedance: over
10 kilohms
DIGITAL OPTICAL OUT
Connector type: square
optical
Rated output: –18 dBm
Load impedance: 660 nm
(optical wave length)
— Continued on next page —
MINIDISC DECK
9-873-890-11
2001E0200-1
© 2001.5
Sony Corporation
Home Audio Company
Shinagawa Tec Service Manual Production Group
http://www.Datasheet4U.com
1 page  
SECTION 1
SERVICE NOTES
MDS-JE770
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential dif ference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
This appliance is classified as a
CLASS 1 LASER product.The
CLASS 1 LASER PRODUCT
MARKING is located on the
rear exterior.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 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.
This caution
label is located
inside the unit.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radia-
tion exposure.
5
5 Page 
MDS-JE770
Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Example
When 42 is displayed:
Higher bit : 4 = 0100 t b6
Lower bit : 2 = 0010 t b1
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
When A2 is displayed:
Higher bit : A = 1010 t b7+b5
Lower bit : 2 = 0010 t b2
The retry cause in this case is combined of “access fault”, “IVR rec error”, and “ader5”.
Reading the Track Mode Display
Higher Bits Lower Bits
Hexadecimal 8 4 2 1 8 4 2 1 Hexa-
Bit
decimal
b7 b6 b5 b4 b3 b2 b1 b0
When 0
Details
When 1
Binary 0 0 0 0 0 0 0 1 01 Emphasis OFF
Emphasis ON
0 0 0 0 0 0 1 0 02 Monaural
Stereo
0 0 0 0 0 1 0 0 04 This is 2-bit display. Normally 01.
0 0 0 0 1 0 0 0 08 01:Normal audio. Others:Invalid
0 0 0 1 0 0 0 0 10 Audio (Normal)
Invalid
0 0 1 0 0 0 0 0 20 Original
Digital copy
0 1 0 0 0 0 0 0 40 Copyright
No copyright
1 0 0 0 0 0 0 0 80 Write prohibited
Write allowed
Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.
Example When 84 is displayed:
Higher bit : 8 = 1000 t b7
Lower bit : 4 = 0100 t b2
In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “emphasis OFF”, “mo naural”,
“original”, “copyright exists”, and “write allowed”.
Example When 07 is displayed:
Higher bit : 0 = 1000 t All 0
Lower bit : 7 = 0111 t b0+b1+b2
In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “emphasis ON”, “stereo”,
“original”, “copyright exists”, and “write prohibited”.
Hexadecimal t Binary Conversion Table
Hexadecimal
0
1
2
3
4
5
6
7
Binary
0000
0001
0010
0011
0100
0101
0110
0111
Hexadecimal
8
9
A
B
C
D
E
F
Binary
1000
1001
1010
1011
1100
1101
1110
1111
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MDS-JE770.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MDS-JE770 | MINIDISC DECK SERVICE MANUAL | Sony |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |