c451 has the O showing jam on the right side (the O is showing up on the screen between the lower front door and upper front door). The sensor by the paper dust collector is clean and working in test mode, the sensor on the door is also working properly. The only "sensor" showing up as a 1 in the jam screen is the OHP detection, but not sure if that's usually a 1 or not. Does anyone have any ideas which sensor could be causing this jam indication?
Showing Jam But No Paper
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Re: Showing Jam But No Paper
Is it showing the paper as late getting to the sensor? If so check the paper feed. -
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Re: Showing Jam But No Paper
Jam codes would really help here. Below is all guesses because too much information is missing without the jam code.
If it is a jam that won't clear at all, and you've tested the sensors as good, try to reboot. Those older machine, for whatever reason, sometimes get stuck in a jam state if they have been sitting with the jam for a length of time.
If it clears, but comes back after it tries to feed again, then it's likely the paper is not making it out of tray, so check the feed unit in whatever tray it's feeding out of.A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...Comment
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Re: Showing Jam But No Paper
Jam codes would really help here. Below is all guesses because too much information is missing without the jam code.
If it is a jam that won't clear at all, and you've tested the sensors as good, try to reboot. Those older machine, for whatever reason, sometimes get stuck in a jam state if they have been sitting with the jam for a length of time.
If it clears, but comes back after it tries to feed again, then it's likely the paper is not making it out of tray, so check the feed unit in whatever tray it's feeding out of.Comment
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Re: Showing Jam But No Paper
IIRC that model has the paper dust guide below the steel reg roller.
Dust will accumulate on it. Remove and clean throughly with an air can.
If it thinks there is paper there (just dust) it will throw a false jam code.
That's if it shows the jam at power on.
If it happens when making a copy/print it's probably just worn rollers or one way clutch bearing slipping as no paper can leave the tray resulting in an 1101/2/3/4 jam depending on the tray selected.
Good luck.
Edit... you responded while I was typing.
It's prolly paperdust like I said above.We know a thing or two because we've seen a thing or two.
The medication helps though...Comment
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Re: Showing Jam But No Paper
IIRC that model has the paper dust guide below the steel reg roller.
Dust will accumulate on it. Remove and clean throughly with an air can.
If it thinks there is paper there (just dust) it will throw a false jam code.
That's if it shows the jam at power on.
If it happens when making a copy/print it's probably just worn rollers or one way clutch bearing slipping as no paper can leave the tray resulting in an 1101/2/3/4 jam depending on the tray selected.
Good luck.
Edit... you responded while I was typing.
It's prolly paperdust like I said above.Comment
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Re: Showing Jam But No Paper
You cycled the power but did you open the doors indicated ?Comment
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Re: Showing Jam But No Paper
I tried to find a picture for guidance, but I can't find a good one in the service manual, and I can't find the sensor flag in the parts book at all. I must blind. Maybe someone else might have better luck locating it.Last edited by femaster; 07-22-2022, 09:13 PM.A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...Comment
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Re: Showing Jam But No Paper
IIRC that model has the paper dust guide below the steel reg roller.
Dust will accumulate on it. Remove and clean throughly with an air can.
If it thinks there is paper there (just dust) it will throw a false jam code.
That's if it shows the jam at power on.
If it happens when making a copy/print it's probably just worn rollers or one way clutch bearing slipping as no paper can leave the tray resulting in an 1101/2/3/4 jam depending on the tray selected.
Good luck.
Edit... you responded while I was typing.
It's prolly paperdust like I said above.Comment
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Re: Showing Jam But No Paper
Enter sevice mode.
Select State "confirmation".
Select "Sensor check".
Sensors should be in "0" state, locate the one which is in "1" state.
Sensor might be dirty or faulty or its actator might be broken or stucked (didn't return to its original position).
Should be simple.Comment
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