Read Sony MDS-JA555ES Service Manual online
11
Reading the Display:
Convert the hexadecimal display of each digit into binary display. If more than two causes, they will be added.
Example When 42 is displayed:
Higher bit: 4 = 0100
→
b6
Lower bit: 2 = 0010
→
b2
In this case, the retry cause is combined of “CLV unlock” and “ader5”.
Example When A2 is displayed:
Higher bit: A = 1010
→
b7+b5
Lower bit: 2 = 0010
→
b1
In this case, the retry cause is combined of “ACCESS default”, “IVRrec” and “ader5”.
The reading of the track mode display is as follows.
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
Hexadecimal
When 0
When 1
01
02
04
08
10
20
40
80
Contents
Emphasis OFF
Monaural
2-bit display, normally 01
01: Normal audio, Other: Invalid
Audio (normal)
Original
Copyright exists
Writing is prohibited
Emphasis OFF
Stereo
Invalid
Digital copy
No copyright
Writing is allowed
Reading the Display:
Convert the hexadecimal display of each digit into binary display. The several causes are added and displayed.
Example When 84 is displayed:
Higher bit: 8 = 1000
→
b7
Lower bit: 4 = 0100
→
b2
This example shows that “Emphasis: OFF”, “Monaural”, “Original”, “Copyright exists” and “Writing is allowed” because b2 and b7 are 1
while all other bits are 0.
while all other bits are 0.
Example When 07 is displayed:
Higher bit: 0 = 0000
→
all 0
Lower bit: 7 = 0111
→
b0+b1+b2
This example shows that “Emphasis: ON”, “Stereo”, “Original”, “Copyright exists” and “Writing is prohibited” because b0, b1 and b2 are
1 while all other bits are 0.
1 while all other bits are 0.
Hexadecimal
→
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
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