4-6
Power supply to
integral module rack
abnormal
1. Check if voltage between two contact screws in any
slot reaches 12VDC. If yes and the parameter module
functions, PCB assembly in the SMR might fail.
2. If there is no 12V sent to the integrated module rack,
check that power module output voltage to mother
board reaches 12V DC. If yes, mother board might
fail.
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 Sound] 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.
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