Dover DMC-1 not working

I have two elevators. One is running and the other one not. The problem when i power up the bad elevator the other one dont take hall calls. I have to turn of the cpu for the other one to work. The bad elevator close door and dont do anything. He run on inspection but not auto.

Probably a bad CLC, you should be able to unplug the group comm on the bad car so you can power it up without taking down the group to troubleshoot. The bottom 2 plugs on CLC are comm, left, LCC10 is group, right, LCC9 is car. Without power and plugs off you should read 460-48 ohms from pin 2 to pin 4 land at least a Meg ohm from 3 to 1. On both LCC9 and LCC10

Maybe both cars are master?

Hi, thanks for answer. I take out both plugs, and test both, LCC10 from 1-3 and 2-4 read 67 omh on both
LCC09 from 1-3 and 2-4 read 54 omh on both

I am reading the plugs not the pins on the board. Im right?

Thanks, i check the cars one is master the other is slave.

May want to verify your CLC settings 52 - 56 are correct.

No, you’re reading the board pins

have u replaced any boards, or software? make sure your software between the 2 cars are compatible. some of the newer software will not communicate with old.