MPC307 cutting off pages

[Dark Helmet]

Howdy folks,

Got a MPC307 that is missing the bottom 1/2"-3/4" of the page at times. 1 page jobs never have the issue. Only multi page jobs. When the lag occurs some are also slightly skewed.
Trays, 1, 2, & bypass do this with letter paper. Didn't have legal to try when onsite.

When i got onsite only 2-3 pages in a 15 page run had poor registration. The more i ran it the worse it got. First page is always perfect.

Machine has 20k pages on it, clean location. Black drum was starting to leave lines so replaced that. No change.

Done so far:
Cleaned reg assembly, inspected area, nothing looks out of place.
Swapped transfer belt.
Cleaned tray exit sensor and reg sensor. Checked operation in SP 5804.
Tried increasing paper buckle and tray 1 feed clutch timing.

The lead edge has the blank spot and the bottom is getting cut so that should mean the paper is leaving the reg roller before the image arrives on the belt.

The attached picture with the blank spot is the lead edge.

The picture of the transfer belt has me totally thrown. I don't understand how the black lines at the bottom of the test chart with the arrow pointing down can be recreated 3 times in a row as that's not what was copied.

Any body else run into this? Im looking at reg clutch but the cut off page should be at the top if the reg clutch was slipping.
IMG-20201124-WA0004.jpgIMG-20201124-WA0002.jpg

[8T2]

Re: MPC307 cutting off pages

Transfer belt with duplicate image is throwing me too. Out of interest what happens when printing internal prints like full SMC? And how is the line position on colour test page?

Haven't had an issue on a 307 but did have a 2051 once where the main drive started lagging and randomly did all sorts of weird and wonderful things with leading edge and line position. Stripped the gearbox out and some Bel-Ray 6 in 1 sorted it out

Sent from my WAS-LX1 using Tapatalk

[Dark Helmet]

Re: MPC307 cutting off pages

Transfer belt with duplicate image is throwing me too. Out of interest what happens when printing internal prints like full SMC? And how is the line position on colour test page?

Haven't had an issue on a 307 but did have a 2051 once where the main drive started lagging and randomly did all sorts of weird and wonderful things with leading edge and line position. Stripped the gearbox out and some Bel-Ray 6 in 1 sorted it out

Sent from my WAS-LX1 using Tapatalk

When customer called it it was for the tops of the page being cut off. When the machine prints however, the lead edge is the bottom of the printed image. When you copy the lead edge is the top of the copied image. Its definitely happening from the engine.

I went into printer SP and printed the color chart. Color registration is fine. The entire image is shifted down. I need to check in the manual but if the machine is like the big Ricohs, the black drum drives the transfer belt and bk drum and there is a separate motor for the color drums. I feel if one of the drives was having issues the colors and blacks would be shifted. There is something going on with the skew as well on pages that are shifted. I was hoping the transfer belt would address this.

At this point the only thing i can think of is the reg clutch is dragging when it's disengaged and it's allowing the paper to feed early.
IMG-20201124-WA0006.jpg

[8T2]

Re: MPC307 cutting off pages

When customer called it it was for the tops of the page being cut off. When the machine prints however, the lead edge is the bottom of the printed image. When you copy the lead edge is the top of the copied image. Its definitely happening from the engine.

I went into printer SP and printed the color chart. Color registration is fine. The entire image is shifted down. I need to check in the manual but if the machine is like the big Ricohs, the black drum drives the transfer belt and bk drum and there is a separate motor for the color drums. I feel if one of the drives was having issues the colors and blacks would be shifted. There is something going on with the skew as well on pages that are shifted. I was hoping the transfer belt would address this.

At this point the only thing i can think of is the reg clutch is dragging when it's disengaged and it's allowing the paper to feed early.
[ATTACH=CONFIG]47409[/ATTACH]

Reg clutch seems about right then. Maybe just spray the hell out of it with contact cleaner if you don't have another one to try on hand?

Sent from my WAS-LX1 using Tapatalk

[Dark Helmet]

Re: MPC307 cutting off pages

Reg clutch seems about right then. Maybe just spray the hell out of it with contact cleaner if you don't have another one to try on hand?

Sent from my WAS-LX1 using Tapatalk

You have obviously never taken the back cover off one of these lol

Ill be ordering parts first! These suck to work on. Everything comes out.

[TonerMunkeh]

Re: MPC307 cutting off pages

Do you have a spare side door to try? The levers that lock the door shut have a shaft running through them which twists and causes this fault. The back of the door at the top being slightly stuck out is the most obvious symptom.

[Dark Helmet]

Re: MPC307 cutting off pages

Do you have a spare side door to try? The levers that lock the door shut have a shaft running through them which twists and causes this fault. The back of the door at the top being slightly stuck out is the most obvious symptom.

Tearing one off a MPC306 right now to try before the reg clutch. I was looking at the side door latches etc checking for that and did notice the rear frame side of the door is a tiny bit out compared to the front but its a very small amount. Ill report back what i find!

[mga]

Re: MPC307 cutting off pages

Howdy folks,

Got a MPC307 that is missing the bottom 1/2"-3/4" of the page at times. 1 page jobs never have the issue. Only multi page jobs. When the lag occurs some are also slightly skewed.
Trays, 1, 2, & bypass do this with letter paper. Didn't have legal to try when onsite.

When i got onsite only 2-3 pages in a 15 page run had poor registration. The more i ran it the worse it got. First page is always perfect.

Machine has 20k pages on it, clean location. Black drum was starting to leave lines so replaced that. No change.

Done so far:
Cleaned reg assembly, inspected area, nothing looks out of place.
Swapped transfer belt.
Cleaned tray exit sensor and reg sensor. Checked operation in SP 5804.
Tried increasing paper buckle and tray 1 feed clutch timing.

The lead edge has the blank spot and the bottom is getting cut so that should mean the paper is leaving the reg roller before the image arrives on the belt.

The attached picture with the blank spot is the lead edge.

The picture of the transfer belt has me totally thrown. I don't understand how the black lines at the bottom of the test chart with the arrow pointing down can be recreated 3 times in a row as that's not what was copied.

Any body else run into this? Im looking at reg clutch but the cut off page should be at the top if the reg clutch was slipping.
[ATTACH=CONFIG]47405[/ATTACH][ATTACH=CONFIG]47406[/ATTACH]

Registration clutch

[DRichard]

Re: MPC307 cutting off pages

When customer called it it was for the tops of the page being cut off. When the machine prints however, the lead edge is the bottom of the printed image. When you copy the lead edge is the top of the copied image. Its definitely happening from the engine.

I went into printer SP and printed the color chart. Color registration is fine. The entire image is shifted down. I need to check in the manual but if the machine is like the big Ricohs, the black drum drives the transfer belt and bk drum and there is a separate motor for the color drums. I feel if one of the drives was having issues the colors and blacks would be shifted. There is something going on with the skew as well on pages that are shifted. I was hoping the transfer belt would address this.

At this point the only thing i can think of is the reg clutch is dragging when it's disengaged and it's allowing the paper to feed early.
[ATTACH=CONFIG]47409[/ATTACH]

As I began reading this thread, the registration clutch was the first thing I thought of. I think you may be on the right track. Good luck.

[DRichard]

Re: MPC307 cutting off pages

Do you have a spare side door to try? The levers that lock the door shut have a shaft running through them which twists and causes this fault. The back of the door at the top being slightly stuck out is the most obvious symptom.

I totally forgot about that! Definitely the easier path to take.

[copier tech]

Re: MPC307 cutting off pages

Howdy folks,

Got a MPC307 that is missing the bottom 1/2"-3/4" of the page at times. 1 page jobs never have the issue. Only multi page jobs. When the lag occurs some are also slightly skewed.
Trays, 1, 2, & bypass do this with letter paper. Didn't have legal to try when onsite.

When i got onsite only 2-3 pages in a 15 page run had poor registration. The more i ran it the worse it got. First page is always perfect.

Machine has 20k pages on it, clean location. Black drum was starting to leave lines so replaced that. No change.

Done so far:
Cleaned reg assembly, inspected area, nothing looks out of place.
Swapped transfer belt.
Cleaned tray exit sensor and reg sensor. Checked operation in SP 5804.
Tried increasing paper buckle and tray 1 feed clutch timing.

The lead edge has the blank spot and the bottom is getting cut so that should mean the paper is leaving the reg roller before the image arrives on the belt.

The attached picture with the blank spot is the lead edge.

The picture of the transfer belt has me totally thrown. I don't understand how the black lines at the bottom of the test chart with the arrow pointing down can be recreated 3 times in a row as that's not what was copied.

Any body else run into this? Im looking at reg clutch but the cut off page should be at the top if the reg clutch was slipping.
[ATTACH=CONFIG]47405[/ATTACH][ATTACH=CONFIG]47406[/ATTACH]

No mention that you updated the firmware? this does fix a few random issues, this step often gets overlooked.

The machine only has 20k yet you needed to replaced the black PCU?

I doubt the reg clutch would have failed so soon, does the reg roller turn freely by hand?

From your description of the fault it sounds like the paper is not stopping at the reg roller & being pushed through, to it could be the clutch is sticking ON thus driving early etc.

[Dark Helmet]

Re: MPC307 cutting off pages

Side door did squat. Reg clutch and the shaft is on order. $85 for a clutch is highway robbery. I was going to order the motor. $185 for that?!

Firmware is up to date. ARFU is enabled on this machine. Just checked on ARMS again and it's all current.

I tried pushing on the side door as well while running. No change. All that is left at this point is the clutch. Not looking forward to this job. The good news is they have a lunch bar style desk to put the machine on that is long. At least it will be a good workspace. Will report back next week assuming parts are not on back order. Ricoh has really been shitting the bed with parts availability.

Thinking back i should of tripped the side door and ran the transport motor and watched the reg roller to see if it's turning slowly.

Thanks for all the replies.

[slimslob]

Re: MPC307 cutting off pages

One question. Are both springs for the registration roller pressure properly in place. If not there could be a gap at one end allowing the paper to force past the roller slightly. It will also cause skewing. A quick test is to see if you an slide a hakt inch wide strip of paper between the rollers at either end.

[copier tech]

Re: MPC307 cutting off pages

One question. Are both springs for the registration roller pressure properly in place. If not there could be a gap at one end allowing the paper to force past the roller slightly. It will also cause skewing. A quick test is to see if you an slide a hakt inch wide strip of paper between the rollers at either end.

Exactly, if paper was stopping at the reg roller it would remove the skew.

[Dark Helmet]

Re: MPC307 cutting off pages

Well a month of back order and the thing is fixed.

What a f-ing job that is. 2.5 hours. I can deal with removing the layers of boards but all those bloody wiring harnesses and trying to remember how to re route them. Should of taken more pictures.

I took the drive pack out and turned it by hand, the reg roller out put gear was turning with the drive pack. I had to hold the gear pretty firm to keep it from turning. That clutch was very stiff inside when turning it by hand.
The new clutch still turned the output shaft but as soon as you touched it it stopped turning. With the friction of that reg unit on those im sure it would be enough to form a paper buckle.

Thanks for all the feed back on this one.