Mitsubishi MELSEC Q Series User Manual

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18.2 Troubleshooting
18.2.2 When MODE LED is not lit green
18
TROUBLESHOOTING
18.2.2 When MODE LED is not lit green
The following flowchart shows procedures to be taken when the MODE LED of the C
Controller module is not lit green at the time of the C Controller system power-on.
Figure 18.2 When MODE LED is not lit green
No
Yes
No
No
Yes
Yes
Error occurred
Is the MODE LED lit green?
Start up the C Controller module in the
hardware self-diagnostics mode
( Section 18.5 ).
Is the MODE LED lit orange?
Carry out the hardware self-diagnostics
of the C Controller module.
Check the result of the hardware self-
diagnostics, and consult your local
Mitsubishi service center or
representative, explaining the details
of the problem.
Consult your local Mitsubishi service
center or representative, explaining
the details of the problem.
Completed
Power off and then on or reset the C
Controller system.
Is the MODE LED
flashing green?
(Has the standard ROM been
shut down?)
Section 18.5

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English