NetApp FC4600 Hardware Cabling Manual page 187

23. First Seven-Segment Display
24. Cache Active LED
25. Controller A Service Action Required LED
26. Controller A Service Action Allowed LED
27. Battery Service Action Required LED
28. Battery Charging LED
29. Power Canister
30. Power AC Power LED
31. Power Service Action Required LED
32. Power Service Action Allowed LED
33. Power DC Power LED
34. Power Standby Power LED
Chapter 6: Component Locations 177