System Manual 4. System Components
76.7300FP11/2, Rev A 8/09 Page 2-37
Power Supply Unit (PSU)
4.32 This section describes the features and circuitry of the 81.CM3561-R5
PSU used in the Tellabs 7325 Switch.
4.33 Each hot-swappable PSU supports a -48 VDC power feed via a connector
on the front of the module. Redundant PSUs are deployed to protect against a PSU
failure.
4.34 The PSUs normally operate as load sharing. When a PSU fails, the other
PSU carries the entire system load. No disruption occurs.
Fault red The Tellabs 7325 Switch is faulted.
red flashing The Tellabs 7325 Switch is in reset or during upgrade
when writing to flash.
off No fault exists or the LED is not functional.
Sync Not used.
Minor yellow Minor alarm occurred.
off No alarm condition.
Major yellow Major alarm occurred.
off No alarm condition.
Critical red Critical alarm occurred.
off No alarm condition.
Port
Ports 1–24
green Port facility provisioned to the UP state, no facility faults
exist.
red An LAGPF, LOS, or LOSYNC condition has been
detected or SFP is not present (when port facility is in the
UP admin state and in the DOWN operational state).
amber Port facility is provisioned to the DOWN state.
amber flashing Loopback on this port is in progress.
off Port facility is not provisioned.
Table 4.7 Tellabs 7325 Switch LED Descriptions
LED Status Description
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