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Service Manual PRELIMINARY
4.4.3
System Bus Address Parity Error
Step 4
Determine which node put the bad command/adress on the system bus identified in
MC_ERR1. Perform the action indicated.
Table 4-6 Address Parity Error Troubleshooting
MC_ERR1 Data Pattern
Most Likely Cause
Action
1000 0000 000x xxx0 10xx xxxx xxxx xxxx
Data sourced by MID = 2
Replace CPU0
1000 0000 000x xxx0 11xx xxxx xxxx xxxx
Data sourced by MID = 3
Replace CPU1
1000 0000 000x xxx1 00xx xxxx xxxx xxxx
Data sourced by MID = 4
Replace IOD0
1000 0000 000x xxx1 01xx xxxx xxxx xxxx
Data sourced by MID = 5
Replace IOD0
1000 0000 000x xxx1 10xx xxxx xxxx xxxx
Data sourced by MID = 6
Replace CPU2
or IOD1
1000 0000 000x xxx1 11xx xxxx xxxx xxxx
Data sourced by MID = 7
Replace CPU3
or IOD1
NOTE: IOD0 = B3040-AA bridge module; IOD1 = B3040-AB bridge module.
