4-5
Power supply failure 1. Check if the voltage between two contact screws in
any slot reaches 12V DC. If yes and the parameter
module functions properly and the PCB assembly in
SRM might fail.
2. If there is no 12 VDC power sent to the SMR, check
whether the power voltage output to the USB_Hub
board by the power module reaches 12V. If yes, the
fuse of the USB interface board might blow. Replace
the USB_Hub board.
Cable defective or
poorly connected
1. Check that the cable between SMR interface board
and communication board is properly connected.
2. Check that connecting cables and connectors are not
damaged.
Nios II module loose
or failure
1. Check that Nios II module is correctly plug ed
2. If the symptom persists, replace the Nios II module.
SMR interface board
failure
Replace the SMR interface board.
SMR communication
board failure
Replace the SMR communication board.
USB_Hub board
failure
Replace the USB_Hub board.
Mother board failure Replace the mother board.
Integral module rack
Module failure Replace parameter module. If a new module is
identified, the original one is defective.
Cable defective or
poorly connected
1. Check that the cables from 3-slot module rack
communication board to MPM module rack
communication board, module rack to mother board
are properly connected.
2. Check that connecting cables and connectors are not
damaged.
Wrong
communication board
software revision
Upgrade the program of the module or Integral module
rack.
Integral module
rack cannot
identify parameter
modules
Module (in some
slots) unrecognized
Replace the corresponding module rack communication
board.
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