Specifications

Chapter 6 Troubleshooting and Diagnostics Installation and Operation Manual
6-6 Handling Alarms FCD-E1LC Ver. 1.0
Table 6-2. FCD-E1LC Alarm Messages
Alarm
Number
Terminal Message Description Corrective Actions Severity Type
04
ALARM BUFFER
OVERFLOW
More than 100 alarms entries have
been written in the alarm buffer since
the last clear command
Read the messages, and then send the CLR ALM /A (CA)
command from the supervision terminal
MINOR ON
06
DB-INIT SWITCH IS
ON
The INIT_DB section of switch SW2 is
set to ON (the changes made to the
database will be lost if the unit is
turned off or reset)
1. Remove FCD-E1LC cover.
2. Set the section to OFF.
MINOR ON
07
CLOCK WAS CHANGED
TO FALLBACK
The FCD-E1LC switched to the fallback
clock source, because the master clock
source failed
Check the master clock source. A clock source is replaced
as a result of failure under the following conditions:
1. ML or SL – fails during local loss of frame
synchronization on the main link
2. CH1 or CH2 – fails when the data channel equipment is
disconnected or inoperative (DTR line not asserted)
MINOR ON
08
CLOCK WAS CHANGED
TO INTERNAL
The FCD-E1LC switched to the internal
clock source, because both the master
and the fallback clock sources failed
1. Check the two clock sources.
2. Perform the power-up self-test and replace the
FCD-E1LC if a failure is detected
MINOR ON
09
CLOCK WAS CHANGED
TO MASTER
The FCD-E1LC switched back to the
clock source selected as the master
source
Normal state – no action required MINOR ON
10
DIAL-OUT CYCLE
FAILED
The current cycle of call attempts
failed
Check the modem connected to the CONTROL DCE
connector. If the called numbers are often busy, you may
also increase the number of call retries
MAJOR ON