IBM DCS3860, Installation, User'S, And Maintenance Manual

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Table 15. Fan assembly LEDs
Number LED Normal Status Problem Status
1
Power
®
On (Green) Off: No power to fan
assembly
2
Service Action Required
(Fault) Off On (Amber): A fault exists
within the fan assembly
3
Service Action Allowed Off On (Blue): The fan
assembly can be removed
AC power-supply LEDs
This section describes the primary LEDs on the DCS3860 ac power supplies.
1
Standby power LED (green)
Future use only.
2
DC power LED (green)
When this green LED is lit, it indicates that the DCS3860 is turned on and
is supplying 5-volt, 12-volt, and 48-volt dc power.
3
Service Action Allowed LED (blue)
When this blue LED is lit, it indicates that it is safe to remove the power
supply.
4
Fault LED (amber)
When this amber LED is lit, it indicates that a power supply or fan has
failed or that a redundant power supply is not turned on.
5
AC power LED (green)
When this green LED is lit, it indicates that the storage system is receiving
ac power.
Drive drawer LEDs
This section describes the LEDs on storage expansion enclosure drive drawers.
AC DC
2
1
I
O
1 2 3 4 5
dcs00010
Figure 32. AC power-supply LEDs
Chapter 4. Operating the DCS3860 storage system and EXP3800 expansion enclosure
65