Sony MDSJE320 Service Manual - Page 7

Reading the Retry Cause Display Higher Bits Lower Bits Hexa- Hexadecimal 8 4 2 1 8 4 2 1 Bit decimal b7 b6 b5 b4 b3 b2 b1 b0 Cause of Retry Binary 0 0 0 0 0 0 0 0 00 Spindle is slow 0 0 0 0 0 0 0 1 01 (Not used) 0 0 0 0 0 0 1 0 02 ader5 Occurring conditions When spindle rotation is detected as slow (Not used) When ADER was counted more than five times continuously 0 0 0 0 0 1 0 0 04 Discontinuous address When ADIP address is not continuous 0 0 0 0 1 0 0 0 08 (Not used) (Not used) 0 0 0 1 0 0 0 0 10 FCS incorrect When not in focus 0 0 1 0 0 0 0 0 20 IVR rec error When ABCD signal level exceeds the specified range 0 1 0 0 0 0 0 0 40 CLV unlock When CLV is unlocked 1 0 0 0 0 0 0 0 80 Access fault When access operation is not performed normally 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 n b6 Lower bit : 2 = 0010 n b1 In this case, the retry cause is combined of "CLV unlock" and "ader5". When A2 is displayed: Higher bit : A = 1010 n b7+b5 Lower bit : 2 = 0010 n b1 The retry cause in this case is combined of "access fault", "IVR rec error", and "ader5". Hexadecimal n 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 - 7 -