TAP-
112
363-206-295
Clearing
Trouble
:
1997
December
1,
Issue
15
of
4
Page
(Continued)
Conditions
Alarm
Minor
A.
Table
or
Step
or
Level
Alarm
Procedure
causes
Likely
(Note)
Description
Trouble
Indication
LED
MN
lighted.
LED
FAULT LED
on
lighted
SYSCTL
not
is
common
output
Telemetry
grounded. SYSCTL failed.
failed
relay
control
fan
7
Step
MN
lighted.
LED
on
lighted
LEDs
shelf
fan
Fan
replacing.
needs
filter
Fan
board
control
shelf
Fan
failed.
pack
failed.
feeder
power
Fan
failed.
4
within
repaired
be
must
fan
The
service
otherwise
hours,
occur.
may
interruption
failed
shelf
fan
TAP-118
pack
circuit
unknown
or
illegal
An
the
into
inserted
been
has
type
shelf.
and
CP
Remove
CP.
correct
install
MN
lighted.
LED
type
CP
illegal
MN
lighted.
LED
FAULT LED
on
flashing
TGS/TG3 circuit
pack
AIS
ref.
sync.
DS1
inc.
BER
ref.
sync.
DS1
inc.
EOOF
ref.
sync.
DS1
inc.
LOF
ref.
sync.
DS1
inc.
LOS
ref.
sync.
DS1
inc.
OOL
ref.
sync.
DS1
inc.
signal.
ref.
sync.
incoming
of
Failure
TGS/TG3
provisioned
pack
circuit
ESF).
or
(SF
format
frame
wrong
for
15
Step
MN
lighted.
LED
FAULT LED
on
flashing
3DS3
LOS
DS3
DSX)
(from
inc.
*
fail
sig
DS3
DSX)
(from
inc.
*
at
removed
or
failed
Equipment
DSX-3
13
Step
MN
lighted.
LED
AIS
line
OC12
inc.
*
OC-12
of
Failure
OLIU
far
at
CP
end.
56
Step
MN
lighted.
LED
FAULT LED
on
flashing
OLIU
LOF
OC12
inc.
LOS
OC12
inc.
degrade
sig
OC12
inc.
(BER)
(BER)
failed
sig
OC12
inc.
of
Failure
OLIU
end,
far
or
near
at
fiber.
receive
of
failure
or
TAP-120
MN
lighted.
LED
FAULT LED
on
flashing
3STS1E
AIS
line
EC1
inc.
*
LOF
EC1
inc.
*
LOS
EC1
inc.
*
degrade
sig
EC1
inc.
(BER)
*
(BER)
failed
sig
EC1
inc.
*
of
Failure
3STS1E
far
or
near
at
fiber.
receive
of
failure
or
end,
13
Step
table.
this
of
end
the
at
Notes/footnotes
See
