Ricoh MPC4504 Bypass Trouble

[bdesire]

Hello, I have a bypass tray that has been used regularly as a envelope feeder.
The unit will pull the envelope for a whole second and then stop with the separation roller pushing the envelope back in to the tray. So far I have changed all the pulleys as well as all the one way clutches and gears. This is a strange problem that also effects letter size paper. Does anyone know of a part number for the bypass unit ( the entire unit )? in the manual it shows only a duplex unit which is the entire right side door. Thanks in advance.

[Phil B.]

Re: Ricoh MPC4504 Bypass Trouble

Hello, I have a bypass tray that has been used regularly as a envelope feeder.
The unit will pull the envelope for a whole second and then stop with the separation roller pushing the envelope back in to the tray. So far I have changed all the pulleys as well as all the one way clutches and gears. This is a strange problem that also effects letter size paper. Does anyone know of a part number for the bypass unit ( the entire unit )? in the manual it shows only a duplex unit which is the entire right side door. Thanks in advance.

look in PM under right door IPB

[bdesire]

Re: Ricoh MPC4504 Bypass Trouble

look in PM under right door IPB

Thanks for the quick response but the only option in the parts manual is for duplex unit. There isn't a right door.

[Phil B.]

Re: Ricoh MPC4504 Bypass Trouble

Thanks for the quick response but the only option in the parts manual is for duplex unit. There isn't a right door.

Ok WHICH side is the tray on?
Look in manual for that side covers...

Sent from my SM-G960U using Tapatalk

[slimslob]

Re: Ricoh MPC4504 Bypass Trouble

The pickup roller is lifting while the feed motor is still turning and the lead edge has not yet the next roller.

[bdesire]

Re: Ricoh MPC4504 Bypass Trouble

The pickup roller is lifting while the feed motor is still turning and the lead edge has not yet the next roller.

Yes, thats exactly what its doing, what is the cause? Thanks

[Mark Bbb]

Re: Ricoh MPC4504 Bypass Trouble

Copypaper has always a size limitations on printers...
Perhaps the size of the enveloppe is to small to fit the minimum standards?

[bdesire]

Re: Ricoh MPC4504 Bypass Trouble

Copypaper has always a size limitations on printers...
Perhaps the size of the enveloppe is to small to fit the minimum standards?

Its also happening on letter size paper.

[Mark Bbb]

Re: Ricoh MPC4504 Bypass Trouble

Are all paper settings correct?
Fix the by pass paper size to A4.
Print with on A4 paper
Same problem?

[bdesire]

Re: Ricoh MPC4504 Bypass Trouble

Are all paper settings correct?
Fix the by pass paper size to A4.
Print with on A4 paper
Same problem?

I don't have A4 paper but it happens with letter, legal all sizes.

[Mark Bbb]

Re: Ricoh MPC4504 Bypass Trouble

is the jammed paper a little bit damadged (a notch) at the leading edge?
Perhaps something in the paper path is blocking the paper

[bdesire]

Re: Ricoh MPC4504 Bypass Trouble

is the jammed paper a little bit damadged (a notch) at the leading edge?
Perhaps something in the paper path is blocking the paper

I don't see any notches, I have parts on order, I'm thinking maybe either the actuator or the entrance sensor may be faulty. I will let you know what I find out.

[Coptech]

Re: Ricoh MPC4504 Bypass Trouble

Isn't there an SP on the 4504 that commits the bypass to either short or long paper? In other words, it only detects width. Depending on how sp is set, will feed 11" LEF or 11x17 but not both. Consequently, it will feed 11r or 8 1/2x14. SP 1007-001 sets priority length detect.

[Mark Bbb]

Re: Ricoh MPC4504 Bypass Trouble

I don't see any notches, I have parts on order, I'm thinking maybe either the actuator or the entrance sensor may be faulty. I will let you know what I find out.

did it actually worked before with enveloppes?
Where there no problems before a certain time?

[slimslob]

Re: Ricoh MPC4504 Bypass Trouble

The first thing to replace is the full set of bypass rollers. The next is to increase the registration loop.