IBM StorageSmart DF1100R Operator's Manual page 39

9. If the amber CHK light 1 comes on, verify that the new fan-and-power-
supply assembly is correctly installed.
If it is correctly installed, refer to the StorageSmart - ProFibre Storage Array, RAID
Controller Unit - DF1100R, Storage Expansion Unit - DF1100J: Service Guide,
GY18-2409 for information about determining the cause of a problem.
1
Figure 34. Fan-and-Power-Supply CHK Light
Chapter 3. Exchanging Disk Drive Modules and Fan-and-Power-Supply Assemblies
29