5-3
NOTE
When the battery module has a failure, it may cause problems to other
components. In this case, troubleshoot the battery module per the
procedure described in the table above.
Components of the main unit are powered by the power module. In the event
that a component malfunctions, check if the operating voltage is correct.
5.3.5 Module defective
Symptoms Possible Cause Troubleshooting
Failed to load
modules
Module defective
1. Check that the cable between the external
converter board inside the module and the
converter board is correctly connected.
2. Replace the converter board.
Main unit defective
1. Check that the cable between the main
board and power management board is
correctly connected.
2. Replace the power management board.
3. Replace the main board.
Module
loading
succeeds but
parameters do
not function
Cable defective inside
the module
Check the cables connecting the converter
board and corresponding parameter
module.
Parameter module
defective
Replace the corresponding module.
Converter board
defective inside the
module
Replace corresponding converter board.
5.4 Error codes
Error codes are displayed on the monitor if a failure is detected. For detailed failure
description, cause and solutions, please refer to Appendix C Error codes in the operator’s
manual.