User manual

DEFINITY ECS Release 8.2 Maintenance for R8.2csi 555-233-119 Issue 1
April 2000
Maintenance for csi systems
1-88LED Interpretation
1
Control and Port Circuit Pack Status LEDs
Each circuit pack has three LEDs on the front panel visible at the front of the
carrier. On all circuit packs, except the 650A Power Unit, the LEDs indicate:
1. Red (alarm)
— If the circuit pack is communicating with the system, the
system has detected a fault in this circuit pack. An on-board alarm for this
circuit pack is displayed in the Alarm Log.
The circuit pack also lights this LED when either the circuit pack has not
yet initialized communication with the system or when the circuit pack
loses contact with the system and stops functioning (circuit pack is said to
be “in reset”). In these cases, there may not be an alarm in the Alarm Log.
To determine if the red LED is lit because the circuit pack is not in contact
with the system, issue the
list configuration board PCSS
command,
where PCSS refers to the slot containing this circuit pack. If the system
does not detect the circuit pack, this command returns
Identifier not
assigned
or
no board
.
If the circuit pack has just been inserted, the system may still be initializing
the circuit pack. If, after 5 minutes, the circuit pack still has not initialized
communications with the system, check the MO for any special
instructions (for example, EPN Maintenance circuit pack can stop
EXP-INTF circuit pack from initializing). If the MO does not provide the
needed information, perform the following steps:
■ Check the Error Log for TONE-BD and TDM-BUS errors. Enter
test
tdm P
where P is the port network containing the relevant slot.
Refer to ‘‘Restarting Nonfunctioning Port Circuit Packs’’
in the
general description of the
‘‘TDM-BUS (TDM Bus)’’
. Enter
test
tone-clock PC
, where P is the network containing the relevant slot,
and C is the carrier containing the relevant slot. Follow appropriate
sections for any TONE-BD and TDM-BUS errors.
■ Reseat the suspect circuit pack.
!
WARNING:
Reseating some circuit packs may be very destructive (for example,
Control Carrier circuit packs.)
Wait 5 minutes. Then issue the
list configuration board PCSS
command. If the result indicates that the system still has not
registered the circuit pack, go to next step.
■ Try to insert the circuit pack into a different slot and try to insert a
different circuit pack into the suspect slot (provided the
maintenance documentation for this circuit pack does not warn
against either of these actions).
■ If the system seems to be functioning correctly, but the circuit pack
does not start communicating with the system, replace the circuit
pack.