Section 5 – TROUBLESHOOTING Mini-Crawler Crane M A E D A
5-90 1/2019 MC405C-3
Remote Control
"While Crane operates perfectly under manual control, a part or whole functions are un-operable by the
remote control."
In such event of failure as above, perform the DIAGNOSIS shown in next pages.
CAUTION: First, check in accordance with the table below before you start the diagnosis, based
on next pages.
Such an error may be occasionally fixed by simple practice, such as applying another operation
procedure or replacing batteries.
Where the checking by the table below and diagnosis in accordance with the process in the next
pages fail to fix the errors or faults, contact us or our sales service agency.
When such errors are due to the electrical failure of remote control system, the Crane is
operable under the manual control from the Crane.
The Crane is operable under the manual
control from the Crane.
When the Crane operates, this remote control
system has a failure.
Otherwise, when the Crane does not operate,
perform the diagnosis of the Crane, itself.
Power of the Transmitter and Receiver is ON.
Turn ON the power, when not.
The fuse in the Receiver is blown.
Check whether the fuse is blown or not; check the
cause when blown, then replace with a new one.
Indications in the LCD screen of the
Transmitter are OK.
Turn ON the power, when not. When the
indications are still not available, repair or replace.
The Transmitter enclosure is deformed or
damaged.
Where the Transmitter enclosure is deformed or
damaged, repair or replace it.
Each operation lever of the Transmitter is in its
neutral position. The Accelerator lever is
In any event of operation levers and control buttons
failure, repair or replace.
Manipulation began just after the Power switch
of the Transmitter is turned ON.
Allow 3 to 4 seconds after the Transmitter power is
turned ON, with no operations.
The LCD screen in the Transmitter or the
Monitor display in the Receiver shows error
In the event where the error massages or error
codes are indicated, once power OFF the
Transmitter and turn it ON again.
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