duplex problem e-studio45

[amirshkh]

hi to all my friend
duplex is not working for mor than 1 paper and i heared some noise in duplex
when i open duplex and turn on the machine i see duplex motor stoption is working all the time even the machin printing single side after 1 day ic (dm7407m) in main board get burn i change ic but nothing is change and i still have problem in duplex
can anyone help me abut that or tell me what the ic i must to change

tnk

[ivovb]

It sounds like a dusty problem. Check all shafts and bushing in duplex - clean/change.

BR

[amirshkh]

on its not
i change main board and problem is solve
i know one ic have problem
what do you think?

[aalex_bom]

Was you replace IC board in Duplexx Unit?? (ADU)

[amirshkh]

i think its not abut ic board in duplex unit because when i change main board duplex work fine
do you know were is the ic duplex in main board ?
tell me the number
tnk

[amirshkh]

dosent anyone know abut the ic ?
heeeelp me