4-6
3-slot or MPM module
rack communication
board failure
Replace the 3-slot or MPM module rack communication
board.
Nios II module failure Replace the Nios II module.
Mother board failure Replace the mother board.
4.6.4 Alarm Problems
Symptoms Possible Cause Corrective Action
Cable defective or
poorly connected
1. Check that cables from alarm LED board to
button board and button board to mother board
are properly connected.
2. Check that connecting cables and connectors
are not damaged.
Alarm LED board
failure
Replace the alarm LED board.
Button board failure Replace the button board.
The alarm lamp is
not light or
extinguished but
alarm sound is
issued
Mother board failure Replace the mother board.
Audio alarm disabled
Select [Main Menu]→[Maintenance >>]→
[User Maintenance >>]→enter the required
password→[Alarm Setup >>], and then in the
popup menu, set [Minimum Alarm
VolumeAlm S ound ] to appropriate setting.[On]
In the [Others] window of the [Alarm Setup]
menu, set [Alm Volume] to appropriate setting.
Cable defective or
poorly connected
1. Check that cable between speaker and mother
board is properly connected.
2. Check that connecting cables and connectors
are not damaged.
FPGA audio logic error
Upgrade the audio logic part of the FPGA
program.
Speaker failure Replace the speaker.
No alarm sound is
issued but alarm
lamp is light
Mother board failure Replace the mother board.