Sony HCD-C5 service manual Details, Bit When Binary

HCD-C5

Reading the Retry Cause Display

		Higher Bit					Lower Bits						Details
Hexadecimal	8		4	2	1	8		4	2	1	Hexadecimal
Bit	b7		b6	b5	b4	b3		b2	b1	b0		When 0		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”, “Monaural”, “Original”, “Copyright”, and “Write allowed”.

Example When 07 is displayed: Higher bit : 0 = 0000 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”, and “Write prohibited”.

Hexadecimal t Binary Conversion Table

Hexadecimal	Binary	Hexadecimal	Binary
0	0000	8	1000
1	0001	9	1001
2	0010	A	1010
3	0011	B	1011
4	0100	C	1100
5	0101	D	1101
6	0110	E	1110
7	0111	F	1111

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