NP7161 H1 document feeder problem

[DadO]

HY all COPYTECHs
I have one problem whit 7161's H1 document feeder
When u place paper in DF and press start, machine reports a Jam on the DF.
There is no activity in DF after pressing copy button like dead but led diod is blinking showing jam so as on machine panel

IF anyone had any similar problems whit this machine or suggestion i would APPRECIATE ANY HELP

p.s.
i dismantle it complytly but cant see anything strange

I would think that sensor is dirty but i checked door senzor and paper feed(when u place a sheet in DF) but they work

p.s.s
great site i fell sory i didnt bump on it before

[DadO]

cleaned all senzors in DF even the two of 2way led's under black transport plastic.

It is obvious that document feeder see paper jam somewhere.First would be that the circuit board of the 2way led's is gone to dust but cant say for
sure (don't have a part to replace).

Anyway if anyone had similar problem please replay

[superfly]

Sounds to me like you're not getting 24V to the doc feeder; or the board that controls it is dead.

[logonjim]

document feeder problem

Hi have a look at the flipper motor arm if it does not rotate when you press for a copy it will give you this type of jam. The arm of the motor should come out on top of originals when you press for a copy and the motor or arm gets lazy .hope this is a help ..happy new year to all

[yourownfree]

i/o mode

maybe a good idea to look in the i/o mode to see which sensor thinks there is paper. if all voltages are ok to the board. spring off of something or maybe you just need to do a sensor init

[Canuck]

Like logonjim said, check the re-circulating motor..the arm is just pressed onto the output shaft of the motor and they are famous for coming loosen..also the harness assembly from adf pcb to document tray is noted for wires breaking,especially in accounts where paper guides are moved alot(legal to letter,as in a lawyers office)