Lucent DDM-2000 OC-3 User And Service Manual page 619

TAP-102
:Trouble Clearing
Page 3 of 14
Table A – Major (MJ) Alarm Conditions
Alarm Level or
LED Indication Trouble Description (Note)
MAJOR. MJ LED
BBF5 required in LS-8
lighted.
BBF5 required in LS-4
CP not allowed - (eqpt)
ExternalMinor
environment n
frequency error
See notes and footnotes at end of table.
*
*
DDM-2000 OC-3 M
Issue 2, February 2000
Likely causes
A BBF5 JMPR CP is missing
from a shelf (Group 3 or earlier)
with two 27G-U OLIU circuit
packs in a FUNCTION UNITS
slot pair.
A BBF5 JMPR CP is missing
from a shelf (Group 3 or earlier)
with two 27G2-U OLIU circuit
packs in a FUNCTION UNITS
slot pair.
A DS1/DS1PM CP is installed in
a LOW SPEED slot associated
with a FUNCTION UNITS slot
provisioned for DS3, STS1E_L
low speed, or OLIU CP service.
External minor alarm
(environmental alarm input 15)
is active. DC power or cooling
fan in RT failed.
An environmental alarm point
(miscellaneous discrete input) is
active.
The DS1 external timing
reference or the timing from a
remote shelf has a frequency
offset greater than 20 hertz.
ULTIPLEXER
363-206-285
Step or
Procedure
Install BBF5
JMPR CP in slot
8(P) of the LOW
SPEED GROUP
associated with
the FUNCTION
UNITS slots
where the 27G-U
OLIUs are
installed.
Install BBF5
JMPR CP in slot
4(P) of the LOW
SPEED GROUP
associated with
the FUNCTION
UNITS slots
where the
27G2-U OLIUs
are installed.
Remove DS1 CP
or change
function unit to
MXRVO or
STS1E_H CP
high speed.
Clear trouble
using local
procedures.
Clear trouble
using local
procedures.
Check the DS1
external timing
source or the
timing obtained
from a remote
shelf.