Troubleshooting
ATCA-7150 and RTM-ATCA-7150 Getting Started (6806800G42B) 103
3. Check the power supply of the shelf. If the power is low, the ATCA-7150 cannot be powered
on through the SMM.
4. Check whether the SMM is firmly inserted in the proper position and works well. Make sure
that at least one SMM is present in the shelf and works well.
5. Contact Emerson Network Power technic al support engineer to check th e IPMC software.
A.8 Component Exceptions

A.8.1 Component Is Unavailable

Description
The optional component that is newly installed cannot be used.
Solution
To solve the problem, proceed as follows:
1. Make sure that this optional component is suitable for the ATCA-7150 suite.
For details, see Optional Components Supported by the ATCA-7150 on page 79.
2. Make sure that the optional component is installed properly.
3. Make sure that any installed device or cable is not loose.
4. Re-install the optional component that is installed just now.
5. Replace the optional component that is installed just now.
For details, see Installing Blade Accessories on page 78.

A.8.2 Number of DIMMs Is Inconsistent

Description
The number of the displayed system DIMMs is less than that of the installed physical DIMMs.
Solution