Sony MDS-JB940 Service Manual page 10

Reading the Retry Cause Display
Higher Bits Lower Bits
Hexadecimal
8 4 2
Bit
b7 b6 b5 b4 b3 b2 b1 b0
Binary
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 1
0 1 0
1 0 0
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
0 0000
1 0001
2 0010
3 0011
4 0100
5 0101
6 0110
7 0111
10
Hexa-
1 8 4 2 1
decimal
0 0 0 0 1 01
0 0 0 1 0 02
0 0 1 0 0 04
0 1 0 0 0 08
1 0 0 0 0 10
0 0 0 0 0 20
0 0 0 0 0 40
0 0 0 0 0 80
Hexadecimal Binary
8 1000
9 1001
A 1010
B 1011
C 1100
D 1101
E 1110
F 1111
When 0
Emphasis OFF
Monaural
This is 2-bit display. Normally 01.
01:Normal audio. Others:Invalid
Audio (Normal)
Original
Copyright
Write prohibited
Details
When 1
Emphasis ON
Stereo
Invalid
Digital copy
No copyright
Write allowed