Good day all, We're having a strange fault on a Komatsu FB20-2E (it's the same as an Jungheinrich EFG/DF). When switching on the contact switch the lights on the dashboard flashes on and off, the main contactor doesn't switches on (no errors because the display doesn't light up). We changed several parts but with no improvements (dasboard-interface card-3x controller MP1514) also controlled the wiring but could find anything. Is there someone that has some experance with this model.
Many thanks in advance
Marcb
Showing items 1 - 6 of 6 results.
Hello All,
Thanks for your replies, I found the problem.
We have to install a resistor between the CAN wiring of the dasboard. To have a resistance between 70-125Ohm and not 30-70Ohm like it is original (between CAN low and CAN high)
Kind regards
marcb
I would check the battery connection with the digital meter plugged in turn the key switch on and see if the battery voltage drops drastically.
Also check your key switch is ok. I think it might be a dead man or battery problem from what you have described.
Hello, thanks for your responce. Yes that's OK too, we also replaced it by a nex one. We have on the pump and power steering controller 25 flashes.
Kind regards
marcb
Is the contctor ok under fuseboard seem to think it is a sealed unit
At the beginning, I measured the volts on the inputs,
see diagram
Hello
I repair a similar machine now. I send it that yes. Count it the red led the flashing of diodes on MP1514. In my machine the left side the hydraulics, the middle module the left engine, the right side the better engine.
Best regards, Laci
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