9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. VI-B-43
Additional Information
The clock generator sets the timing for the FPGA.
+5V Digital Supply (NPC)
+5 volt digital supply out of tolerance. This is a warning alarm.
Probable Cause
Equipment malfunction.
Recommended Actions
1. Providing the NCC is maintaining supply to the node (is not alarmed), replace
the NPC. Traffic will not be affected.
2. If the NCC is faulty or has been removed, first check for other alarms to
determine how critical the alarm is. Depending on the malfunction, the node
may otherwise operate satisfactorily.
• If node operation is not affected (traffic is not affected) ensure the NCC is
installed and indicating no alarms before replacing the NPC.
Additional Information
A node will not restart (boot up) without an NCC.
Before replacing an NPC, the NCC must have been installed for not less than 3
minutes to ensure it has a full node status update. Prior replacement of an NPC,
which is driving the TDM bus clock, may result in traffic loss.
+3.3V Digital Supply (NPC)
3.3 volt digital supply out of tolerance. This is a warning alarm.
Probable Cause
Equipment malfunction.
Recommended Actions
1. Providing the NCC is maintaining supply to the node (is not alarmed), replace
the NPC. Traffic will not be affected.
2. If the NCC is faulty or has been removed, first check for other alarms to
determine how critical the alarm is. Depending on the malfunction, the node
may otherwise operate satisfactorily.
• If node operation is not affected (traffic is not affected) ensure the NCC is
installed and indicating no alarms before replacing the NPC.
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