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I2C bus fault messages
The System Event/Error Log may contain I2C bus fault messages from both the
Service Processor Diagnostic and the Advanced System Management processor,
indicated by the source DIAGS and SERVPROC, respectively. The format of the
DIAGS messages from the revision ARY115 and later are formatted as either
I2C Bus x bad or devices on this bus are functioning incorrectly.
or
I2C Busses x, y, ... , z bad or devices on these busses are functioning incorrectly.
where the numbers listed x, y, ..., z represent any of the busses that are
experiencing a fault. The table below provides the appropriate actions to take for
each bus number listed.
Message Action
Failure reading I2C device. Check devices on bus 0.
1. Reseat Service Processor Board
2. Replace Service Processor Board
3. Replace System Board
Failure reading I2C device. Check devices on bus 1.
1. Reseat power supplies
2. Replace power supplies
3. Replace power backplane
4. Replace System Board
Failure reading I2C device. Check devices on bus 2.
1. Reseat front panel connectors
2. Replace front panel
3. Replace System Board
Failure reading I2C device. Check devices on bus 3.
1. Replace System Board
Failure reading I2C device. Check devices on bus 4.
1. Reseat Service Processor Board
2. Replace Service Processor Board
3. Replace System Board
Failure reading I2C device. Check devices on bus 5.
1. Reseat CPUs
2. Replace CPUs
3. Replace System Board
Failure reading I2C device. Check devices on bus 6.
1. Reseat memory card
2. Replace memory card
3. Replace System Board
Failure reading I2C device. Check devices on bus 7.
1. Replace System Board
Failure reading I2C device. Check devices on bus 8.
1. Replace SCSI backplane
2. Replace power backplane
3. Replace System Board
Failure reading I2C device. Check devices on bus 9.
1. Reseat DIMMs 1, 2, 3, and 4
2. Replace DIMMs 1, 2, 3, and 4
3. Replace memory card
4. Replace System Board
Symptom-to-FRU index 117