•
166-904-001 : IMM I2C Test Failed
IMM Indicates failure in PCA9545 (I2C I/O Expander) bus (BUS 3).
Recoverable
No
Severity
Error
Serviceable
Yes
Automatically notify support
No
User Response
Perform the actions mentioned one at a time and try the test after each action:
1. Turn off the system and disconnect it from power. Wait for 45 seconds. Reconnect it to power.
2. Make sure that DSA and BMC/IMM are at the latest level.
3. Run the test again.
4. If failure remains, refer to "Troubleshooting by symptom" in the system "Installation and Service
Guide" for the next corrective action.
Related links
–
Lenovo Support website
–
Latest level of DSA
–
Latest level of BMC/IMM
•
166-905-001 : IMM I2C Test Failed
IMM Indicates failure in PSU 1 bus (BUS 4).
Recoverable
No
Severity
Error
Serviceable
Yes
Automatically notify support
No
User Response
Perform the actions mentioned one at a time and try the test after each action:
1. Turn off the system and disconnect it from power. Wait for 45 seconds. Reconnect it to power.
2. Make sure that DSA and BMC/IMM are at the latest level.
3. Run the test again.
4. If failure remains, refer to "Troubleshooting by symptom" in the system "Installation and Service
Guide" for the next corrective action.
Related links
1004
Lenovo System x3630 M4 Installation and Service Guide