ADTRAN 25 manual Maintenance Error Message Possible Solution

MAINTENANCE

	ERROR MESSAGE				POSSIBLE SOLUTION
	AND DESCRIPTION
D C	F a i l		T r a n s i e nt Record:		No action required; this error
Indicates a dc power failure.					display is a record of the start
					time of the failure.
DC Power		Failed: Indicates the			Check the +5 V dc voltage level
absence of +5 V dc on a cabinet.					on the power supply (see Figure
Each cabinet has its own power					4 - 2 ) .
supply; therefore, this may not
cause a warm start.
DC	Power	Restored:		Indicates	It is possible to produce this error
that +5 V dc has been restored.					when a CP is inserted into a slot
The	“DC Fail Check” log is				with power “On” (not a real
removed. This message keeps a					Problem).
record of dc “hits.”
Down Link Buffer Overflow: The					Recoverable; no action required.
down-link		buffer is		receiving
messages too fast.
DSP	Insane:		Service	Circuit or	If a " DSP Sane " occurred, the
Tone Detector CP problem.					system will remove this error from
					the permanent alarm table. If the
					problem persists, check or
					replace the faulty CP.
DSP Sane: DSP recovered from					Recoverable; no action required.
an insane			condition.
Dual Port RAM Read-Back Failure:					Check CP, and replace if required.
Service Circuit dual port RAM
problem.
WART Test			Failed:	Peripheral	This problem affects the tape,
port on CPU/Memory CP has					administration, maintenance and
failed .					SMDR ports. If the problem
					persists, replace the CPU/Memory
					C P .