[Jamming] WC 7855 - a problem with printing in duplex mode

[Insaid1986]

Hello!

A machine WC 7855 has a problem with printing in duplex mode with fault codes 377-130 and 377-131. Usually, one stops in exit 2 assembly, when sheet must go to print the second side. Second shhet stops in duplex patch. In diagnostic mode I checked the regi sensor, duplex patch sensor, duplex motor- in diagnoctic mode it works. Also I checked duplex assembly: trans Rolls, drive gear, transportation falure due to foreign substances- it's ok. The wire wound resistance of duplex Motor: 1.5Ohm-it's ok. What can be wrong?

[xeroxsharp]

Re: WC 7855 - a problem with printing in duplex mode

duplex motor is faulty or faulty MD PWB, but if it is posible trie first with another exit unit ( high speed ).
I know this issue from 7535
As i remember I did replace MD PWB