Mitsubishi Electronics Q172CPU9(N) Home Security System User Manual


 
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6 INSPECTION AND MAINTENANCE
(e) Flowchart for when "M.RUN" LED is turned off.
The following shows the flowchart when the "M.RUN" LED is turned off
during operation.
"M.RUN" LED is turned off.
Completion
NO
YES
NO
YES
Set the RESET/L.CLR switch to
the neutral position.
RESET position
OFF
ON
YES
NO
(d)
"Flowchart for when "ERR." LED
is turned on/flickered."
Neutral position
Is the RESET/L.CLR
switch of the CPU module in
the neutral position?
Is "M.RUN" LED
turned on?
Is M2000 turned on?
M2000 is turned on.
Is "M.RUN" LED
turned on?
When started the latch clear,
"M.RUN" LED is flickered.
(Note-1)
H/W error
Explain the error symptom and get
advice from our sales representative .
Is "ERR." LED
turned on/flickered?
REMARK
(Note-1) : When the RUN/STOP switch is stop position and the RESET/L.CLR is
tilted to L.CLR several times for latch clear operation, the "M.RUN" LED
flashes to indicate that the latch clear processing is under operation.
When the RESET/L.CLR switch is further tilted to L.CLR while the
"M.RUN" LED flickers, "M.RUN" LED turned off and terminates the latch
clear processing.