DOWNLOAD Sony MDS-JE480 Service Manual ↓ Size: 2.82 MB | Pages: 68 in PDF or view online for FREE

Model
MDS-JE480
Pages
68
Size
2.82 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mds-je480.pdf
Date

Sony MDS-JE480 Service Manual ▷ View online

11
MDS-JE480
Hexadecimal
Bit
Binary
Higher Bits
Lower Bits
8
4
2
1
8
4
2
1
b7 b6 b5 b4 b3 b2 b1 b0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
0
Hexa-
decimal
Details
01
02
04
08
10
20
40
80
Emphasis OFF
Monaural
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
Audio (Normal)
Original
Copyright
Write prohibited
When 0
When 1
Emphasis ON
Stereo
Invalid
Digital copy
No copyright
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”, “monaural”,
“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
Binary
Hexadecimal
Binary
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Reading the Track Mode Display
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”.
12
MDS-JE480
SECTION 2
GENERAL
This section is extracted from
instruction manual.
13
MDS-JE480
SECTION 3
DISASSEMBLY
3-1. DISASSEMBLY FLOW
 This set can be disassembled in the order shown below.
SET
3-2 UPPER CASE (408226)
3-3 FRONT PANEL
       SECTION
3-4 MAIN BOARD
3-5 PT BOARD
3-6 MECHANISM DECK
      SECTION (MDM-7S1A)
3-7 OVER LIGHT HEAD
      (HR901)
3-11 OPTICAL PICK-UP
        (KMS-260B/260E)
3-7 BD BOARD
3-8 HOLDER ASSY
3-9 LOADING MOTOR 
      ASSY (M103)
3-10 SLED MOTOR 
        ASSY (M102)
3-12 SPINDLE MOTOR
        ASSY (M101)
3-7 BD BOARD
3-8 HOLDER ASSY
Note 1:
 The processes enclosed with                   , remove in the any order.
Note 2:
 You cannot go to the next process until every process enclosed with                  has done.
14
MDS-JE480
3-2. UPPER CASE (408226)
1
 Two screws
     (CASE 3TP2)
1
 Two screws
     (CASE 3TP2)
1
 Screw
     (CASE 3TP2)
2
 Case (408226)
3-3. FRONT PANEL SECTION
3
 Two screws
     (+BVTP3x8)
3
 Two screws
     (+BVTP3x8)
7
 Front panel
4
 Claw
4
 Claw
1
 Wire (flat type) (CN3)
2
 Lead with connector 
5
5
6
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