IMET M880 Series, User Manual, Page: 39 / 56

M880 ALL EN 2.7.2.docx 39/56
During the programming or test phase, the DSC function is not active.
The DSC function is excluded by the activation of the "Snail-S" mode.
11. TROUBLESHOOTING
This chapter contains advice on handling radio remote control malfunctions.
First of all, make sure that the problem actually depends on the remote control. To do so, operate the
machine using the wired remote control instead of the radio remote control. The test is valid provided
that the same controls are tested and that the radio remote control and the wired remote control use
the same connector.
Any tampering of the radio remote control or its components will automatically void the
manufacturer’s warranty.
All repairs should be performed by qualified, authorized personnel and follow the manufacturer’s
instructions.
Use original spare parts when making replacements, in order to preserve the original features of the
radio remote control (see the list of replaceable parts in Chap. 13).
Radio Remote Control
Problem Possible Remedies
Limited operating range 
Check the antenna and move it to a new location
if necessary (see Chap. 6)

Check the Data Error EC-A and EC_B LEDs and
if the system is not in AFA mode, change the
frequency (see Chap. 9)
Certain functions perform improperly

See Annexes T and R
Transmitting Unit
Problem Possible Remedies
Transmitting unit does not turn on

Check battery charge

Make sure no commands are in the working
position when you press START

Make sure the STOP button is not pressed
At start-up the LED lights-up only while you press the
Start button 
Check the contacts in the STOP button
Receiving Unit
Problem Possible Remedies
Receiver does not turn on 
Check the protection fuses

Check the power cables
Receiver turns on but does not activate the
application and the green LEDs are on

On the receiver, check the fuse in series with the
STOP relay and the control relay

Check the wiring between the receiver and the
application
Receiver turns on but does not activate the
application and the red LEDs are on

Check the radio remote control’s operating range

Make sure the device is not in passive
emergency; if so, change the frequency
Certain commands are not executed

Check the wiring between the receiver and the
application
Battery Charger unit
Problem Possible Remedies
The green LED does not turn on 
Check the power cable

Check the battery fuse
Charging lasts only a few minutes

Battery is already charged

Clean the contacts with a humid cloth
Battery charger remains in pre-charging phase
indefinitely 
Battery has completed its life cycle

Clean the contacts with a humid cloth