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6 INSPECTION AND MAINTENANCE
(b) Flowchart for when " ." does not flash in the first digit of
7-segment LED
END
YES
YES
NO
NO
Is the
connecting direction
of extension cable correctly?
(Isn't IN-IN or OUT-OUT
connection?)
"STOP"
YES
NO
"RESET"
Connect the extension cable correctly.
Set the RUN/STOP/RESET switch to
"STOP".
(Note) : Normally, " . " flashes in the first digit of
7-segment LED.
YES
NO
" ." does not flash in the first digit of
7-segment LED.
(a)
"Flowchart for when "POWER" LED
turns off"
Does " . " flash
in the first digit of 7-segment
LED?
A hardware fault
Check operation in the order starting
with the minimum system.
If the module will not work, explain
the error symptom and get advice
from our sales representative for the
modules with failure.
Does "POWER"
LED turn on?
Does " . " flash
in the first digit of 7-segment
LED?
Is the
RUN/STOP/RESET switch
set to STOP?