MM-400A
13. Error List and Maintenance
13-3
Error
code
Description Cause Remedy
E07 MONITOR
MEMORY
ERROR
Measured value
data in internal
memory is
damaged.
If the data in internal memory is corrupt, the
following are possible causes:
• Generation of powerful power supply or
electrostatic noise
• Abnormal supply voltage resulting, for example,
from lightening or induced lightening
• Low memory battery voltage
It is advisable to back-up measured value data
onto other media often, as a precaution against
possible data corruption.
If the error is not eliminated, the MM-400A needs
repair. Please contact us.
E08 CLOCK
ERROR
Loss of the hour
due to low
voltage of the
backup current
After replacing the batteries, set the clock again.
Refer to “(2) Replacing the Battery.”
E09 INTERNAL
COMMUNICA
TION ERROR
Unable to make
communication
between internal
units.
Turn off the power and on again.
If the error is not eliminated, the MM-400A needs
repair. Please contact us.
E10 EXTERNAL
24V POWER
OVER LOAD
The built-in 24 V
DC power, output
from the rear
terminal, was
overloaded.
Turn off the power, and check the I/O connections
on the rear.
• Check if the 24 V DC power supply is not
shorted.
• Check if nothing with the large current capacity
is connected.
Do not use the internal power supply other than
for external input/output signals.
E11 FORCE
SENSOR
ERROR
Unable to set the
force offset to 0.
Check the following when an error occurs when
performing a zero rest of displacement, changing
to the measurement mode, or changing the
schedule.
• If no force sensor is connected, connect a force
sensor or select a setting other than AUTO,
FORCE and EXT for TRIGGER in the BASIC
SETUP (1) screen (for all 127 schedules). For
the force sensor built in a head, the force
continues to be applied.
• When a zero reset of force sensor is not
performed, perform the zero reset of force
sensor, referring to “n-2. SYSTEM SETUP (2)
Screen” in Chapter 8, “Operation Screens.”
For the load cell built in a head, a force is
applied in some cases. Perform it without a
force applied.
If the error is not eliminated, the MM-400A needs
repair. Please contact us.
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