dsm735 tray 1 jamming

[mabawser]

i have a DSM 735 jamming from tray 1. when it jams it doesn't seem to have even tried to feed the paper. the feed rollers are ok. I swapped the tray and still the same. I have swapped clutches with tray 2 and still the same.

At the moment I have left the drive section in bits and I am returning in the morning to continue (ran out of time today) but so far haven't found anything wrong.

anyone had anything the same or similar and know the cause? it comes up with jam003.

cheers

[nmfaxman]

Re: dsm735 tray 1 jamming

Check the 1 way bearing behind the feed roller.
These tend to slip.
Had to replace one this morning.

[Iowatech]

Re: dsm735 tray 1 jamming

This is probably stupid, but it won't take long and should be easy to hide, so you might want to try it out.
Check the paper size and type settings for drawer 1 in user tools. Maybe even the settings in service mode SP1. While that is probably not causing the misfeeds, I've seen those cause apparent lack of feed enough times that I check them in cases like this.
One question though. You say the rollers are OK, have you tried swapping them with the rollers that tray 2 uses?

[nmfaxman]

Re: dsm735 tray 1 jamming

Most paper size mismatch will jam before the fuser, not fail to feed from the tray.
Kicked MY ass once, won't let it happen again.

One small white gear on the FEED shaft.
Take off the little black gear that drives the pickup roller and it will come off in your hand.

Take a scotchbrite or fine emery cloth and rough up the shaft where the bearing was. You will see it is shinier than the rest of the shaft.

Takes 5 minutes, what do you have to lose?

The most difficult problem has the simplest solution.

The hardest problem is finding that simple solution.

[Bantams]

Re: dsm735 tray 1 jamming

Are the springs ok for the tray lift mechanism and are you sure you swapped the feed clutches and not the relay ones?

[slimslob]

Re: dsm735 tray 1 jamming

It has been a week since the last posting so I don't know if the problem has been resolved. For Bantams, 35 and 45 ppm machines do not use lift springs. What I have encountered a few times is that the bottom few sfeets of paper in the tray will have the rear corner bent under. This will make the sensors think that the paper has been fully lifted before it comes in contact with the pickup roller.

[Iowatech]

Re: dsm735 tray 1 jamming

Most paper size mismatch will jam before the fuser, not fail to feed from the tray.

Sorry about that. I was thinking of the newer machines where if in user tools the paper size wasn't set to auto, the lift plate wouldn't always lift the paper to the correct height, causing intermittent misfeeds.
The paper type setting might still have a hand in this though I think. But I think that less now.

[ash_572]

Re: dsm735 tray 1 jamming

i had this problem lastyear. took me ages to fix and i didnt like taking the 1st feed station out. takes forever. plus it was a longdrive to the customers.


i found that developer leaks onto the rear feed station where all the gears are and he timig belt. theres is also a gear with a belt at the front of the feed station, you have to take a cover off at the front of the machine toget to it. the gears were kinda mashed with all the toner leaking.
dirty machines.

of course it can be the feed clutch aswell.

i remember when i had a look at the back of the machine and seeing the drive section, it completely put me off, didnt even wanna touch it. in the end with all the pressure i was under i finally had the courage to take it all apart on a scrap machine that we hd in the warehouse and went out there and finally fixed it.

the only bad thing about this machine is the fuser. known for jams in fuser.