Maeda MC815C, Operation Manual, Page: 247 / 426

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11.5 BEFORE REMOTE CONTROLLER FAILURE DISGNOSIS
“While the Crane operates perfectly from control on the machine body side, part or whole
functions are inoperable from the remote control.” In the event of failure as above, perform the
DIAGNOSIS shown in the following pages.
CAUTION
Before performing troubleshooting on the following page onward, check according to
the inspection item order shown below.
Such an error may be occasionally fixed by simple practice, such as applying another
operation procedure or replacing the battery.
If the faults persist after the following check items and troubleshooting on the following
pages onward are performed, contact us or our sales service agent for repair.
In the case of an electric failure of this equipment, the crane can be operated with
manual operation on the machine body side after the power is turned “OFF” with the
emergency stop switch of the Transmitter.
Check item Cause and Action
Does the crane operate with the operation on
the machine body side?
If the crane operates, there is an abnormality
in this equipment.
If the crane does not operate, troubleshoot the
machine body.
Is power supplied with transmitter and
machine engine key set to ON position?
If the power is not turned ON, turn it ON.
Does the emergency stop switch remain ON?
Set emergency stop switches on transmitter
and machine to “OFF” position.
Is Outrigger/Crane selector switch set to
Neutral (N) position? Change setting of Outrigger/Crane selector
switch.
Is the battery mark of the Transmitter blinking
in green?
If it is blinking in red, replace the battery.
Is the Transmitter deformed or broken?
If the Transmitter is deformed or broken,
repair or replace it.
Is each operation lever of the Transmitter in
the neutral position?
If the control levers or operation switches
show any sign of a fault or malfunction, repair
or replace them.
Is the fuse in the Receiver blown?
Check whether the fuse is blown or not; check
the cause when blown, then replace with a
new one.