Lucent Technologies SPIRIT 1224 Controller Customer Installation Instructions Manual page 28

A Line Card Failure By Itself (L1 to L6)
A single line card failure with no other failures points to a defective line card. The card should
be replaced or exchanged with one known to be good. If the new card also fails, look for a
connector or controller problem. If only one station card is in the system, the station card
may have a problem.
A Station Card Failure By Itself (S1 to S6)
A single station card failure with no other failures points to defective station card, an attendant
adjunct problem, or a wiring problem between the adjunct and controller. A short in the wiring
or station may cause a station card to fail. All sets connected to the problem card should be
disconnected at the station card and the self test should be repeated to localize the problem. A set
known to be good should be used as station 10 if the problem is on the first station card.
If the failure is on the station card, replace or exchange the card with one known to be good.
If the new card also fails, look for connector or controller problem. If only one line card is in
the system, the line card may have a problem.
A SYS Failure By Itself
A non-specific system failure by itself indicates a short between audio paths that can't be resolved
to a specific card. The short might be on a line card, station card, controller, or a connector
(even an unused one). The best way to isolate this type of problem is to remove cards to make
a minimal system (one CPU, station and line card).
A SYS Failure With Station Card Failures
A non-specific system failure along with multiple station card failures indicates an open audio
circuit between the failed station cards. The open circuit might be on one of the station cards or
the backplane. This interconnect test only executes if more than one station card is in the system.
The problem can be isolated to a specific region of the backplane by removing and swapping cards.
Many Failures
The only way to debug a system with many test failures is to remove cards to drop back to a
minimal system.
Problems Not Detected by Diagnostics
This section describes problems not detected by the diagnostics.
Tone Failures
The diagnostics do not detect problems such as noise or incorrect tone levels. The testing will not
detect a bad call progress tone. Both call progress tones can be tested manually by using the
intercom to call your own station number. An alternating frequency error tone should be heard.
The presense of this error tone confirms the operation of the call progress tone generators.
Line Card Failures
Only part of the line card is tested.
The ring detectors are not tested. They can be tested by calling the system to make sure stations
with access to the line ring.
The LA (Line Aux) jacks have a loop current detector. This can be tested by plugging a regular
telephone into one of these jacks and going off hook. A line button light on a SPIRIT station
set should light indicating that the line is in use.
Music on Hold Failures
This can be tested by calling a second line and placing the second call on hold. The music on
hold volume control can be set while listening to this call.
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