Lucent Technologies FiberReach DDM-2000 - Page 1446

TAP-112
: Trouble Clearing 363-206-305
Page 6 of 16 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
MINOR.
MN
LED lighted.
LEDs lighted on
fan shelf.
fan control relay
failed
SYSCTL
circuit pack
failure.
Step 7
MINOR.
MN
LED lighted.
FAULT
LED
lighted on
SYSCTL
.
fan shelf failed Filter needs replacing, a
fan pack has failed, fan
shelf has lost one or
both power feeders, or
the fan shelf control
board has failed. The
fan must be replaced
within 4 hours of the
failure; otherwise
service might be
interrupted and/or circuit
packs might fail.
Refer to Trouble Clearing
Procedures for the
specific cabinet in which
fan shelf is located.
MINOR.
MN
LED lighted.
FAULT
LED
lighted on
affected circuit
pack.
illegal CP type An illegal or unknown
circuit pack type has
been inserted into the
shelf.
Remove circuit pack and
install correct circuit pack.
inc. (from DSX) DS1
LOS†
inc. (from DSX) DS1 sig
fail†
inc. (from DSX) DS3
AIS*
inc. (from DSX) DS3
LOS*
inc. (from DSX) DS3
OOF*
inc. (from DSX) DS3 sig
fail*
Hard failure of upstream
equipment or facility
(towards the DSX-1/T1
or DSX-3 interface). The
DS1/T1 or DS3 input is
disconnected at the
backplane or the
DSX-1/T1 or DSX-3
interface; equipment is
failed or removed at the
DSX-1/T1 or DSX-3
interface. Mismatch of
the line code
(AMI/B8ZS); cross talk
in office wiring; failure of
DS1
,
DS1PM
,
T1EXT
,
or
DS3
circuit pack.
Step 13
Table A – Minor (MN) Alarm Conditions (Continued)
Alarm Level or
LED Inidication Trouble Description (Note) Likely Causes Step or Procedure