IBM 4002-Y2A, Installation And User Manual

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Power status LEDs
Table 10. Power status LEDs
LED Condition Status
DC OK Green DC output ok
Red DC output fail
AC OK Green AC input ok
Off AC input fail
Note: Both “AC OK” and “DC OK” LEDs must be green for the device to function
normally.
Table 11. Switch status for two installed power supply units
State LED PSU1 PSU2
Switch
Status
Load Sharing
HPoE Budget
(HPoE models
only)
Four Green
PSU LEDs AC OK Green Green Running Yes 820W
DC OK Green Green
Single Red `DC
OK' LED AC OK Green Green Running No 410W
DC OK Green Red
Both `DC OK'
LEDs Red AC OK Green Green Failure No None
DC OK Red Red
One PSU with
both `AC OK'
`DC OK' LEDs
Off AC OK Green Off Running No 410W
DC OK Green Off
`DC OK' LEDs
Red and Off AC OK Green Off Failure No None
DC OK Red Off
All `AC OK'
LEDs Off AC OK Off Off Power Off
or Failure No None
DC OK Off Off
Note: When two 620W power supplies are installed in an PoE system that has no
load or light load on the PoE function, one of two power supplies may have
its "DC OK" LED light red. There is no fault in the power supply or the
system and the switch is functioning normally. The LED will turn to green
automatically once the load is increased over the minimum load
requirement. In configurations with a single power supply installed the "DC
OK" LED will light green in a no-load or light-load condition.
Port, system, and power status LEDs for the 4002-Y2A, Y4A,
Y2C, and Y4C
The 4002-Y2A, Y4A, Y2C, and Y4C switches include a display panel for key system
and port indicators that simplifies installation and network troubleshooting. The
LEDs, which are located on the front panel for easy viewing, are shown below and
described in the following tables.
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Ethernet y-series Installation and User Guide: Installation and User Guide