Paradyne CPX-1000 manual Pstn Module Troubleshooting, Verify that the CPX is receiving

1000-A2-GN22-00 4. Troubleshooting

Table 4–6. PSTN Module Troubleshooting

Symptom	Probable Causes	Corrective Action
No indicators are lit on	CPX is not powered.	Put the suspect card on standby,
the T1/STS-1 module.		locked, resources removed. Then
		switch it out (see Hot Swapping Line
		Cards on page 5-11)
		Verify that the CPX is receiving –48
		VDC from the plant battery.
	Software error occurred	Power down the CPX, then reapply
	on the CP module,	power by turning its circuit breaker
	preventing the T1/STS-1	switch off, then on again
	module from initializing.	(see Figure 4–2on page 4-12).
	T1/STS-1 module is	Replace the module (see Module
	faulty.	Troubleshooting on page 4-6)
FAIL indicators are lit	Software error occurred	1. Turn the CPX rear circuit breaker
and/or RUN indicators	on the CP module,	switch off, then on again.
are off on all T1	causing the T1 modules to	2. After the system initializes, verify
modules in the CPX.	initialize improperly.
		that all T1 module FAIL indicators
		are off and RUN indicators are lit.
	CP module is faulty.	Switch over CP to standby. If required,
		swap out (see Hot Swapping CP and
		HSC Cards on page 5-11)
FAIL indicator is lit and/	T1 module is faulty.	Replace the module (see Module
or RUN indicator is off		Troubleshooting on page 4-6).
on a single T1 module;
	Software error occurred	1. Turn the CPX rear circuit breaker
all other T1 modules
show normal FAIL and	on the CP module,	switch off, then on again.
RUN indicator states.	causing the T1 module to	2. After the system initializes, verify
	initialize improperly.	that the T1 module FAIL indicator is
		off and the RUN indicator is lit.
Tx and/or Rx indicators	Software error occurred	1. Turn the CPX rear circuit breaker
on the STS-1 card are	on the CP module,	switch off, then on again.
off.	causing the STS-1 module	2. After the system initializes, verify
	to initialize improperly.
		that the STS-1 module Tx and/or Rx
		indicators are lit or flashing .
	STS-1 module is faulty.	Replace the STS-1 module (see
		Module Troubleshooting on page 4-6).

February 2003 4-9