278
15.1.1 When the POWER LED does not turn on
Check the following.
If the POWER LED does not turn on even after taking the above actions, the possible cause is a hardware failure of
the power supply module or base unit.
Please consult your local Mitsubishi representative.
15.1.2 When the POWER LED does not turn on in green
Check the following items according to the POWER LED status.
(1) When the POWER LED turns on in red
Remove the power supply module and mount it to the normal base unit. Resupply power to the system.
If the POWER LED turns on in red after resupplying power, the power supply module is failed.
If the POWER LED does not turn on even after the power is supplied during the above operation, also
check the items described in Page 278, Section 15.1.1.
(2) When the POWER LED flickers in orange
Resupply power to the system. If the POWER LED flickers in orange after resupplying power, the power supply
module is failed.
If the POWER LED does not turn on even after the power is supplied during the above operation, also check the
items described in Page 278, Section 15.1.1.
Check item Corrective action
The MODE LED of the CPU module is on.
The power supply module has failed. Replace the power
supply module.
Power supply voltage is not appropriate.
Supply power voltage within the specified range.
(
Page 196, Section 7.2)
The internal current consumption for the entire system
exceeds the rated output current of the power supply
module.
Reexamine the system configuration so that the internal
current consumption does not exceed the rated output
current.
(
Page 674, Appendix 10)
The POWER LED turns on when power is supplied again to
the system after all modules, except for the power supply
module, were removed.
Repeatedly supply power to the system, returning the
modules back to the system one by one.
The last module mounted immediately before the POWER
LED turned off is failed.
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