Maeda MC285C-3 - Remote Control System

Section 5 – TROUBLESHOOTING Mini-Crawler Crane M A E D A
5-90 1/2019 MC285C-3
Remote Control System
Use the following procedures if the remote control system does not operate or partially operates, and if
the crane operates normally using manual controls.
NOTICE: Perform the following checks first, before diagnosing error codes. Always first check if the
problems are corrected by applying a different operation procedure or replacing batteries.
If the failure is the result of electrical failure of the remote control system, the crane may still be operable
under manual control.
Checks
Cause and Action
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.
The power to the transmitter is turned on when the
Starter Switch on the machine main unit is ON.
If the power is not turned ON, turn it ON.
The Emergency Engine Stop (EMO)/Remote
Control System Power OFF Switch is in the “ON”
position.
Set Emergency Engine Stop (EMO)/Remote Control
System Power OFF Switch on transmitter and the
crane to the “OFF” position.
The transmitter is deformed or damaged.
Where the transmitter is deformed or damaged, repair
or replace it.
Each operation lever of the transmitter is in its
NEUTRAL position.
In the event of operation lever or control button failure,
repair or replace.
The battery icon of the transmitter is blinking in red.
Replace the battery.
• Make sure that you contact us or our sales service agency for the actions marked within the table.
• Contact us or our sales service agency if you suspect any other abnormalities or causes than those
given below.
Problem
Possible causes
Actions
Power is not supplied to
transmitter after power-on.
Battery contact failure
Check battery for contact failure due to
damage or dirt.
Voltage is not applied to the
transmitter.
Insert a fully charged battery.
Charge battery.
Low voltage alarm goes off
immediately after start of
operation.
Battery contact failure
Check battery for contact failure due to
damage or dirt.
Battery is not fully charged.
Fully charge battery.
Check if battery charging process is
correct.
Battery problem/service life
expired
Check if transmitter functions correctly by
using spare battery or fully charged
battery.
Individual commands
cannot be executed.
Receiver has failed.
Check receiver cable for disconnection.
Connection to the machine is
interrupted.
Check receiving status using receiver
monitor LED.
Controller has failed.
* Inspect or replace controller on
machine main unit.