Maeda MC405C-3 - Page 344

Section 5 – TROUBLESHOOTING Mini-Crawler Crane M A E D A
5-92 1/2019 MC405C-3
Error display
Main cause
Remedy
Transmitter
Receiver
Remedy 1
Remedy 2
―――
The Transmitter defective
• The Accelerator lever was
pulled, when power was
turned ON.
• Return the
Accelerator lever and
push the Reset
button.
*Maintenance/replace
―――
The Receiver PCB defective
• Data error in the memory. • Power on the
Receiver, again.
*Maintenance/replace
―――
The Receiver PCB defective
• CPU error • Power on the
Receiver, again.
*Maintenance/replace
―――
The Transmitter, internal
devices defective.
• Operation levers were not in
the neutral position, when
power was turned ON.
• Return operation
levers and push the
Reset button.
*Maintenance/replace
――― ―――
The Transmitter, internal
Devices defective.
• Data error in the memory. • Power on the
Transmitter, again.
*Maintenance/replace
―――
Breaking of wire for telescopic
control
*Maintenance/replace
―――
Breaking of wire for hoisting
control
*Maintenance/replace
―――
Breaking of wire for derricking
control
*Maintenance/replace
―――
Breaking of wire for slewing
control
*Maintenance/replace
―――
Breaking of wire for accelerator
*Maintenance/replace
―――
Valve neutral error
*Maintenance/replace
The Crane operates perfectly
under the manual mode but
some functions are not
available in the remote control
mode.
• The Receiver PCB defective.
• Wiring failure between the
Receiver PCB and the control
valve solenoids.
• Electromagnetic proportional
control reducing valve error.
*Maintenance/replace
*Maintenance/replace
*Maintenance/replace