Phaser 740 "Jam at A" 3

[roberth58]

When feeding from the tray it jams about 75% of the time. paper stops after being pulled into the feeder about 2". Always works perfectly from the MPT. Have tried the cleaner pad and that did not help. Any ideas?

thanks

 

[majikhands]

There is a little black plastic clutch on the paper feed tray. If you are facing the circuit board on the left hand side, you will see it to the left of the transfer roller. It has a small plastic protrusion that catches. It will only turn one way. This is the culprit. Carefully remove the mounting screw from the circuit board and move it to the side. Remove the plastic clutch and disassemble it. (3 pieces) clean with alcohol or degreaser and oil using wd40 or a white grease. Re-assemble and replace. Worked great on mine. Haven't had a jam since!

 

[GuillermoS]

I have some pictures of the part that you are having problems. I don't know how to post the pictures in here but I can send them to you via E-mail

 

[jpbos330]

I'm also having problems with Paper jams at A. I cant successfully print from both the lower paper tray or the multi-purpose tray. Could this clutch also be causing my problem?

 

[kallekuhl]

Hello everybody ife got a jam at A because the second, upper roll doesnt turn whenever I PUSH very hard while printing anainst the A unit maybe the electrical connection works !?!
I dont think it helps pushing all the time.

The A unit tryes to "work downwards " when printing.
PLEASE HELP

 

[garlicbreath]

My 740 was doing the same thing, error 33, jam at A. It was the black plastic one way clutch mentioned above. The grease they used gets old and sticky. Cleaned mine, lubed with WD40 and works PERFECT now.

 

[poylywog]

Have same problem except it is "jamming" 100% of the time giving jamming error code 33. Cleaned clutch as suggested and all rollers. No luck. All motors operating properly and multipurpose paper transport works fine. Spoke to friend who was (retired) xerox field technician. He suggests maybe the sensor is not working (Part No. 118-9558-00 Paper Feed Flag kit)(Explanation - Since board is not receiving signal it "indicates" a jam and the transport mechanism shuts down and the error is given. ie: a false flag)

Plausible? I believe I have exhausted all other possibilities and I am not prepared to put out $850(CAN) for a new paper feeder (Part no 118-9895-00)

 

[passr]

I was having the same problem with error 33 and "jam at A". Cleaning the clutch took care of the 33s but I still jammed when pulling paper from the tray. I noticed the paper wasn't really jamming. It just seemed to stop just before it got to the silver pressure roller. I finally solved the problem. Behind the paper guide that has the paper thickness switch, there is are 2 rollers on one shaft. They are a grey color (not black like the other rollers). These had hardened and gotten slick so that when the paper met any resistance at all it would stop. I took an emory board and roughed the surface of both rollers and now it works perfectly.

A special thank you to everyone with info about cleaning the clutch. Mine was so gummed up I didn't think it was going to come apart.

 

[cumbrich]

I'm having the same problem as roberth, Jam in A, no errors. It looks just like what passr was seeing.
I have cleaned and lubed the clutch, and lubed the gears, no effect.
I tried to clean the grey hard rollers passr mentioned with ethanol, no effect, and I will try to rough up their surfaces, but I find them hard to get at.
Is there an easy disassembly to make them more accessible?

 

[markgusto]

Yup! I had the same Jam at "A" Code 33 Transfer Kit Error message. I took out the paper feed assembly (2 screws) and began investigating. I am a former Xerox laser printer technician, so I've learned a whole bunch of tricks to keep copiers and laser printers working from the older guys who had been around with Xerox for decades. I noticed a dark gray roller was oxidized and shiney. So I removed the upper idler roller (silver held down by two springs) and used emery cloth to roughen up the roller, and clean off the light shiney oxidation. Then I hit the rest of the rollers with the emery cloth to remove any rubber oxidation. The rubber rollers should be pliable, rough. I took apart the clutch. sure enough it was gummed up. I cleaned it with 91% Isopropyl alcohol. At Xerox, they never wanted you to use WD-40 on plastic parts. They use a special white lithium grease, or a drop of motor oil for lubrication. Sometimes where parts get dirty from toner, they use a dry lubricant called "Kynar" something like talc powder. I noticed a clear rubber cleaning blade under the black foam transfer roller. This clear rubber cleaning blade, removes the left-over toner off the transfer roller. And deposit is below the transfer roller catch trough. Make sure you clean this clear rubber cleaning blade, and transfer roller. It will greatly improve your laser printers print quality. Also give it a good vacuum every 5,000 copies. when you pull out the Imaging Unit, Cover it with a Dark Plastic Garbage Can, It is very sensitve to light. I also use Isopropyl alcohol on the Main charge Grid. I use two Q-tips soaked and piched together and slid up and down the small tungstan wire that runs the length of the charge grid to clean it. After all the TLC and cleaning the Feed system works great, and the prints lood great!

Hang in there
Markgusto@yahoo.com

 

[snoopy050]

I keep getting the Jam A and Error 33. I've read your threads and I got as far as getting the plastic cover off the circuit board. What exactly is "the plastic clutch"? Is it the thing that is labeled "magnetic clutch"? Can someone give me details on how to get the clutch off? Do I need to remove the circuit board? Any help would be greatly appreciated.

 

[snoopy050]

Late into the evening, I finally figured it out. Got my printer up and running again. Yipeee.

 

[cyclone27]

hi snoopy050 and the others,
i am french so excuse me if my english is not very good. i bought a phaser 740, six years ago. it as only 7000 copy as count (7000 not 70000 !) and since the begining i have the same probleme as you : jam in "a" and error 33. xerox-tektronix france said me to change the paper feed. it cost more than 1000 euros (1200 dollars us).
so i am very interrested about what you wrote on this forum. i would like to know where is the little black plastic ? i move the paper fedd on a table but i don't find it !
please help me.
regards
frederic
from france

 

[snoopy050]

I hope I can explain this correctly. The problem is not really the transfer roll. Look up how to remove the transfer roll:

http://www.office.xerox.com/userdoc/P740/consum.pdf

Page 8 of the instructions shows you how to remove the transfer kit. If you look at picture #2, you will be looking at the paper feeding mechanism.

I removed the entire paper feed mechanism off the tracks by removing the two screws that go into the track. You don't have to do this but it made it a little simplier. Remember where the screws go back in because there is not a "hole" that the screws fit into.

Carefully remove the plastic cover over the circuit board, 2 screws I think.

If you look from the end of the paper feeder on the side where you see all the gears, you will find the plastic clutch that everyone refers to about 6 cm away from the transfer kit. It is cylindrical and has a small piece protruding from it on one end and on the other end is a gear. It is black and made of plastic . It is attached to the end of a shaft.

I think you have to loosen the circuit board by removing 1 screw. Don't pull it off, but you do have to loosen it to get the clutch off.

To remove the clutch, there is a small metal piece that fits onto the end of the shaft onto which the clutch fits. Use a small screwdriver to carefully pry that piece off. It looks like a C when you remove it. This is a tough piece to get back on but its doable.

Take the clutch off. It comes apart into 3 pieces although mine was so gunked up that it took quite a bit of cleaning to get it apart. Use a degreaser to clean it. I used a small bit of white lithium grease on the inside after I cleaned it up and reassembled it. Put it all the pieces back together and voila it should work. It jammed one more time after I fixed it, but its been running fine for the last week.

Good luck.

 

[cyclone27]

hi snoopy,
thank you for your answer. i removed the paper feed. but before doing something wrong, please tell me if the plastic clutch is well the piece that you see on this photography :

http://img64.imageshack.us/img64/725/clip1af.jpg

thanks
frederic

 

[snoopy050]

That's it. Good luck.

 

[cyclone27]

hi snoopy,
i removed correctly the clutch : it came nto 3 pieces with a sort of ressort. whas it as on the picture for you :

http://img321.imageshack.us/img321/4656/clutch9ac.jpg

i am not a specialist so do you think i can first cleaning all the pieces with water or only use a degreaser but what kind of degreaser may i use ? idem for the white litium grease. is there a special grease to buy ?
thanks for your help
frederic

 

[snoopy050]

The picture looks right. I used an auto degreaser. I didn't use water, probably wouldn't get any of the grease off anyways. I avoided water because I was afraid of the rust potential but that is just a guess. I used the white lithium grease because it was recommended in a previous thread (markgusto) and I already had some. Mark also suggested drop of motor oil as a lubricant.

 

[cyclone27]

i have just finished to clean all the pieces especially on the spring. i cleaned with water and finished with alcool. tomorow il will buy wd40 and to finish the work. i hope it will work to !
i saw other posts here about the problem :

http://www.tek-tips.com/viewthread.cfm?qid=125400

that tells it is possible to buy the cluch (the part number is 116-0993-00 and it costs 25$). but last week, i bought on ebay an entiere papaer feed for only 40 $ ! i am waiting for it. nut i hope it will work to after my cleaning !!

 

[cyclone27]

hi snoopy,
here is two news : a bad one and o good one. the bad one is i reinstall my paper feed after cleaning the clutch with wd40 and it dosen't work to : "jam in a - error 33 transfer kit"
((-:
the good news is that the used paper feed i bought for 50$ on ebay arrived today (only five days from usa to france !) and it works to. on the first time, i had a jam in a (without err 33 transfer kit) : the paper didn't come into the paper feed but i think i put tow many papers in the paper tray. i remove a bit of papers and now it seems to work fine. so my old transfer kit (a Z one) works on the new paper feed (but i had one with it a Y one).
so i am pleased but i don't understand why my initial paper feed does not work to after being cleaning. i am the only one of this post to have not be able to find a solution a this problem buy clenaning the clutch. perhaps it is the magnetic clutch ? except the paper feed, what could "jam a - error 33 transfer kit" come from ?
frederic