IBM DS4700 manual AC power supply and fan unit LEDs, DC power supply and fan unit LEDs, Number

AC power supply and fan unit LEDs

This section describes the primary power supply and fan unit LEDs on the DS4700 Express Storage Subsystem (models 70A, 70H, 72A, and 72H).

4 3 2 1

ds470007

12 3 4

Figure 96. Power supply and fan unit LEDs

Table 40. Power supply and fan unit LEDs

Number	LED	Normal Status	Problem Status
1	Power supply and fan unit	On	Off
	Power
2	Service Action Allowed	Off	On
	(OK to Remove)
3	Service Action Required	Off	On
	(Fault)
4	Direct Current Enabled	On	Off

DC power supply and fan unit LEDs

This section describes the primary dc power supply and fan unit LEDs on the

DS4700 Express Storage Subsystem (models 70S, 70T, 72S, 72T).

126IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide