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FX2NC Series Programmable Controllers Diagnostics 7.
7-2
7.2 Basic diagnostics
The following diagnostic functions will help identify, common faults.
7.2.1 BATT LED ON
7.2.2 ERROR LED flashes (PROGRAM ERROR)
Fault
BATT LED
ON
Remedy
Monitor
M8006
with a pro-
gramming
tool.
Possible
results
M8006:ON
If the current program and/or date is
stored only in the PCs RAM, copy
and store this immediately. Proceed
to replace the PCs battery.
M8006:OFF
Monitor D8005. This is the current
battery voltage (in 0.1V units). Con-
tact a Mitsubishi service center for
further consideration of the problem.
Fault
ERROR
LED
flashes
Remedy
Check
BATT LED.
Possible
results
LED OFF
Is the BATT OK?
Work through BATT diagnostic. If the
BATT LED is cured yet the ERROR
LED still flashes check for a program-
ming problem.
LED is lit Check for programming problem.
POWER
RUN
BATT
ERROR
POWER
RUN
BATT
ERROR