AT&T Network Adapter 25, Installation And Maintenance Manual

Page: 211 / 438

MAINTENANCE
ERROR MESSAGE
AND DESCRIPTION
POSSIBLE SOLUTION
D C F a i l T r a n s i e n t 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:
T h e
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, c h e c k o r
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
f a i l e d . SMDR ports. If the problem
persists, replace the CPU/Memory
C P .