Service manual

1
Field-Replaceable Units
1-5
General Information
Figure 1-3 Director FRUs (Rear Access)
Power/System LED
Assembly
The bezel at the top front of the director includes an amber system
errorlight-emittingdiode(LED) anda greenpower LED. These LEDs
are actuated and controlled by a Power/System LED Assembly
which is accessed from the rear of the director.
The power LED illuminates when the director is powered on and
operational. If the LED extinguishes, a facility power source,
alternating current (AC) power cord, or director power distribution
failure is indicated.
The system error LED illuminates when the director detects an event
requiring immediate operator attention, such as a FRU failure. The
LED remains illuminated as long as an event is active. The LED
extinguishes when the Clear System Error Light function is selected
from the Element Manager application. The LED blinks if unit
beaconing is enabled. An illuminated system error LED (indicating a
failure) takes precedence over unit beaconing.
CTP Card
The director is delivered with two CTP cards. The active CTP card
initializesand configures the director after power on and contains the
microprocessor and associated logic that coordinate director
operation.
The CTP card provides an initial machine load (IML) button and a
RESET button (recessed) on the faceplate.