SC 501 after last sheet of paper

[Codex]

Hello
i have a strange problem on a Ricoh 2075, after the last sheet of paper is fed the machine shows SC501.......normally it's tray lift error, but it happens only after the last sheet of paper......any idea??

[Bantams]

Re: SC 501 after last sheet of paper

Tray lift isn't going down fast enough replace the one way clutch thing on the lift mechanism and check the sensors on the front.

[slimslob]

Re: SC 501 after last sheet of paper

On a 2075, SC 501 could be anything having to do with tray 1, not just lift. I am assuming that the error occurs after the last sheet of paper leaves the right side of the tandem tray. If there is still paper in the left side but does not get moved over, check the belt pulley for moving the paper over. They will round out on the shaft and need to be replaced. It could also be the home position sensor for the left side.

[TonerMunkeh]

Re: SC 501 after last sheet of paper

There is also a little spring on the pickup solenoid that breaks causing 501.

[JustManuals]

Re: SC 501 after last sheet of paper

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[Counsel]

Re: SC 501 after last sheet of paper

Check that the metal sides front and rear are not bent, they like to get bent so the lift tray gets stuck on one end usually the rear side, then the plate is sitting angled in there so paper cant move across.

[Exok]

Re: SC 501 after last sheet of paper

I agree with Counsel. If I'm not mistaken, a problem with the left side of the tandem not shifting paper over would generate an SC 505.

When the 501 code comes up and you open the tray, does the bottom plate drop by itself all the way down? The metal side guides fit into cut outs on that bottom plate and if they are not straight and bowed out a little, the bottom plate will get hung up on them the higher up the plate goes. Like Counsel said, bend them straight. You may also want to check the paper height sensors located on the front side of tray 1's right tray (2 screws to remove front cover). The bottom plate has a piece that sticks through to the front and it passes a number of sensors lined up to detect position of the bottom plate. It cold be that one or more of these sensors have been knocked off. You may need to snap them back in the frame or replace them if they have been too damaged.

[Eric1968]

Re: SC 501 after last sheet of paper

The belt, that moves the paper stack from left to right, is driven by a small gear. That gear tends to wear. The gear is turning, but the shaft is standing still. If the left paper stack is small, there's no problem, but when the stack is a few riems of paper, the gear slips.

[Codex]

Re: SC 501 after last sheet of paper

There is no paper on the left side of the tray, and after the last sheet is fed i hear the lift motor that tries to lift the tray plate again, and after a while SC 501 comes up........i'll try your suggestions and let you know!

[Toledo]

Re: SC 501 after last sheet of paper

Check the tray is level, the tray will lift up if there is or isnt paper in it, once at the top the sensor on the feed station will register an out of paper condition and the tray will drop down,
behind the tray unit mounted at the bottom on the machine frame, there is a sensor, this is waiting for the tray to enter it, when it reaches the bottom,
if the tray is not level, it will not enter this sensor and you will get the 501 error,
remove the lift belts and re align the tray.

[Debs1964]

Re: SC 501 after last sheet of paper

Check the tray is level, the tray will lift up if there is or isnt paper in it, once at the top the sensor on the feed station will register an out of paper condition and the tray will drop down,
behind the tray unit mounted at the bottom on the machine frame, there is a sensor, this is waiting for the tray to enter it, when it reaches the bottom,
if the tray is not level, it will not enter this sensor and you will get the 501 error,
remove the lift belts and re align the tray.

I would agree with this, if the base plate in the right hand side is not level, you will get SC501, if it was a problem with moving paper from the left to the right, you'd get an SC515

[collme]

Re: SC 501 after last sheet of paper

Check the tray is level, the tray will lift up if there is or isnt paper in it, once at the top the sensor on the feed station will register an out of paper condition and the tray will drop down,
behind the tray unit mounted at the bottom on the machine frame, there is a sensor, this is waiting for the tray to enter it, when it reaches the bottom,
if the tray is not level, it will not enter this sensor and you will get the 501 error,
remove the lift belts and re align the tray.

X3 had this exact sinario numerous times, tray height at rear compared to front only needs to out by a few millimetres to give the exact symptoms you describe

[jam-o-matic]

Re: SC 501 after last sheet of paper

I agree with Counsel. If I'm not mistaken, a problem with the left side of the tandem not shifting paper over would generate an SC 505.

When the 501 code comes up and you open the tray, does the bottom plate drop by itself all the way down? The metal side guides fit into cut outs on that bottom plate and if they are not straight and bowed out a little, the bottom plate will get hung up on them the higher up the plate goes. Like Counsel said, bend them straight. You may also want to check the paper height sensors located on the front side of tray 1's right tray (2 screws to remove front cover). The bottom plate has a piece that sticks through to the front and it passes a number of sensors lined up to detect position of the bottom plate. It cold be that one or more of these sensors have been knocked off. You may need to snap them back in the frame or replace them if they have been too damaged.

I used to have this SC-501 on the machines with the tandem tray #1 - The rear (non-op, towards wall) metal fence gets bent (slamming several reams of paper?). Straighten the rear fence. There are several 'cut outs' where the fence attaches to the bottom plate, and I would cut the each end to form a bigger gap, so the bottom plate would drop smoothly, even if the rear fence gets bent again. Hope this helps!

[Codex]

Re: SC 501 after last sheet of paper

when i open the tray the bottom plate drops down by itself, the machine works fine until there is paper in the tray, the problem occurs only after the last sheet is fed and the tray starts to drop down, i hear regular "klick, klick" and then SC 501......., i'll try your suggestions and let you know!!. Thank you guys!!!

P.s: tried to change tray lift motor....still same problem

[Exok]

Re: SC 501 after last sheet of paper

To me it sounds like your machine still thinks there is still paper in the tray. If it runs out of paper and knows it is out of paper, it wouldn't try to lift the paper again. Either you have a sensor reporting the wrong information (bad, broken, loose sensor) or you have a mechanical binding preventing proper operation. Don't forget to also check up close for small bits of paper stuck in either tray side or machine side of the connector that the tray slides into when you close it. Inspect the connector for broken pins too if there is no paper there.