Instruction manual

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 81.
Note: The green activity light 1 does not come on until disk activity begins.
Figure 23. Disk Drive Module Lights
32 2104 Models DU3 and TU3 Operator’s Guide