Maeda MC-305C-2 - Errors in the Remote Control Devices

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9.2 ERRORS IN THE REMOTE CONTROL DEVICES.
• At the error diagnosis, always verify the indications in the Monitor display in the Receiver and the LCD
screen in the Transmitter. Then find the suitable error display description in the table below so that the
cause is presumed, then, follow the recommended remedy in it.
• First, perform the “Remedy 1” in the table, then continue the “Remedy 2” where the error is not fixed yet.
• Remedies marked with must inevitably be contacted us or our service agents.
• When any other causes are suspected than listed below, contact us or our service agents.
Error display
Main cause
Remedy
Transmitter Receiver Remedy 1 Remedy 2
――― ――
Receiver printed circuit board
(PCB) input voltage dropped.
• Relay PCB defective.
• Power line wire harness
defective
between relay PCB and
Receiver PCB.
Maintenance/replace
Receiver PCB defective
Maintenance/replace
―――
Communication error
• Relay PCB in the Crane side
defective.
• Wiring failure between the
communication PCB and the
Moment limiter display panel.
• The Moment limiter display
panel defective.
• Power ON again the
Transmitter and
Receiver
• Shut down the
electrical power of the
Crane, then ON again.
Maintenance/replace
The Transmitter is in emergency
stop
• Use the Reset button
to release the
emergency stop.
Maintenance/replace
―――
The Transmitter defective
• The Transmitter power is not
ON.
• The Transmitter PCB
defective.
• Wire cut in the Connection
cable.
• Power ON again the
Transmitter
Maintenance/replace
Maintenance/replace
Maintenance/replace
The Receiver defective.
• The Receiver PCB defective.
• Wiring problem in the Receiver
Maintenance/replace
The Transmitter defective
• The Transmitter PCB
defective.
• Voltage dropped in the
Transmitter.
• Wirings for Accelerator and
operation levers cut, or fault of
VR.
• Return the Accelerator
lever and power ON
the Transmitter, again
Maintenance/replace
―――
The Transmitter defective
• The Transmitter Accelerator
lever position defective.
• Return the Accelerator
lever and power ON
the Transmitter, again.
Maintenance/replace
―――
The Transmitter defective
• The Accelerator lever was
pulled, when power was
turned ON.
• Return the Accelerator
lever and push the
Reset button.
Maintenance/replace
―――
T
he Receiver PCB defective
• Data error in the memory.
• Power on the
Receiver, again.
Maintenance/replace
―――
T
he Receiver PCB defective
• CPU error
• Power on the
Receiver, again.
Maintenance/replace