NEC NEAX 2000, Programming Manual

Page: 792 / 1200

ND-91285-001(E)
DECEMBER, 1999
Page 10
Revision 1.0
(1/2)
ALARM INDICATIONS
GENERAL DESCRIPTION
Faults are indicated by the MJ/MN (Major/Minor) lamps located on the AC/DC Power Supply and,
optionally, an external alarm display unit.
STATION APPLICATION
Not applicable
OPERATING PROCEDURE
No manual operation is required.
SERVICE CONDITIONS
1. The following table shows a standard pattern of the faults that can be detected and their alarm indica-
tions. If required, the following alarm indications (Major (MJ), Minor (MN), or no indication) can be
changed on an individual fault basis. Refer to the Maintenance Manual for more information.
(X: Applicable/—: Not Applicable)
CONTENTS OF FAULT
ALARM INDICATIONS
AC-DC
POWER
(PZ-PW121)
EXTERNAL
ALARM
DISPLAY
D
term
ALARM
MJ MN MJ MN MJ MN
System Initialization X X X X — —
Number of stack overflows was more than a
fixed number X X X X X (Note 2) X (Note 2)
MP - FP/AP Communication Failure X X X X X (Note 2) X (Note 2)
FP/AP Down X X X X X (Note 2) X (Note 2)
DTI Line Failure X X X X X (Note 2) X (Note 2)
DCH Link Failure X X X X X (Note 2) X (Note 2)
CCH Link Failure X X X X X (Note 2) X (Note 2)
Number of lockout stations was more than a
fixer number X X X X X (Note 2) X (Note 2)
SMDR output Buffer Memory overflow X X X X X (Note 2) X (Note 2)
DLC Failure X X X X X (Note 2) X (Note 2)
AC/DC Power Supply (PZ-PW121) (Note 1)
• AC Input Down
• DC Output Down (+5V, –27V)
• Fuse Blown (+5V, –27V)
X
X
X X
X
X X
X
X X
X
X X
(Note 2)
X
(Note 2)
X
(Note 2)
X
(Note 2)
X
(Note 2)
X
(Note 2)
Alarm for predetermined time X X X X X X