5. If the amber check light 2 comes on, first verify that the new disk drive
module has been correctly installed, and then run diagnostics in Problem
Determination mode to check the error log. See Appendix A, "Operating with
RISC Systems", on page 77.
Note: The green activity light 1 does not come on until disk activity begins.
Figure 23. Disk Drive Module Lights
Chapter 2. Adding Disk Drive Modules
29