Paradyne CPX-1000 manual MP Module Troubleshooting, Ethernet green MP-to-LAN interface is

4. Troubleshooting 1000-A2-GN22-00

Table 4–5. MP Module Troubleshooting

Symptom	Probable Causes	Corrective Action
PWR indicator is	CPX is not powered	Verify that the CPX is receiving –48 VDC from
off.	up.	the plant battery.
	MP module did not	Turn CPX rear circuit breaker off, then on
	initialize properly	again to cycle power and reinitialize.
	upon CPX power-up.
	MP module is faulty.	Ensure CP modules are initialized to bring
		power to MP card.
		Replace module (Hot Swapping an MP Card
		on page 5-10).
Ethernet green	MP-to-LAN interface is	Troubleshoot LAN (Table 4–8 on page 4-11).
indicator is off.	faulty.

Note

The Splitter Assembly is part of the STS system. The Splitter Assembly provides card redundancy by splitting receive and transmit signal to two STS cards. The active STS card receive and transmits signal. The standby card only receives signal.

The Splitter Assembly is shipped with BNC terminators in place to prevent signal degradation. The terminators should be left in place until an STS cable is connected, and should be replaced if the cable is removed.

When pulling cables on STS systems, disconnect the cable at the splitter end first, and immediately install a terminator. Then, disconnect the cable at the STS card end. When reconnecting, connect the cable at the splitter end first. Then, remove the terminator at the splitter assembly and immediately connect the STS cable.

The BNC terminators should also be used if the Splitter Assembly is used in a non-redundant environment. For example, customers who order the splitter assembly with the intent to upgrade later to redundancy should keep the terminators in

place.

4-8 February 2003