Yamaha RX-Z9 Service Manual page 58

RX-Z9/DSP-Z9
Check result of SDO -> SDI line between YSS930 and YSS930
When the value "xx" is converted into binary, "1" appears
where there is an error.
1st bit: Check result of SDO -> SDI connection between
IC4 and IC8 (0=OK / 1=NG)
2nd bit: Check result of SDO -> SDI connection between
IC8 and IC12 (0=OK / 1=NG)
3rd bit: Check result of SDO -> SDI connection between
IC12 and IC16 (0=OK / 1=NG)
4th bit: Check result of SDO -> SDI connection between
IC16 and IC2 (0=OK / 1=NG)
5th bit: Check result of SDO -> SDI connection between
IC2 and IC6 (0=OK / 1=NG)
6th bit: Check result of SDO -> SDI connection between
IC6 and IC10 (0=OK / 1=NG)
7th bit: Check result of SDO -> SDI connection between
IC10 and IC14 (0=OK / 1=NG)
8th bit: Unused : 0 always
The value of "xx" can be any of all patterns from 00 to 7F
depending on the combination of NG points.
Example) When both IC10 to IC16 and IC8 to IC4 are NG
xx=41 (Binary: 0100_0001)
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