unknown

asked Jun 16, 2004 at 11:53am
Hp HP LaserJet 5MP

Picking up paper folds it and gives error

Hi

I have an HP 5MP which has a problem picking up paper out of both the tray and multipurpose input.

It tries picking it up but the paper folds and stays in the tray. The last red in the row lights up red.

I dont think it is like http://fixyourownprinter.com/kkf0.html because this also concerns the main tray.
The 2 trays share nothing in common except for the paper path once the paper gets into the printer. We have to take it one at a time. Is the paper lifting plate in the MF tray lifting the paper and is the roller making one revolution, and only one revolution? On the lower tray, watch it from the back of the tray using a flashlight. Is the roller making one revolution?
by moe on Jun 16, 2004 at 12:31pm Add comment
MF tray: it is lifting the paper, than it gets stuck.
Lower tray: I cannot see something like a roller.

Thanks in advance !
by unknown on Jun 16, 2004 at 1:23pm Add comment
If you want to be helped, you're going to have to follow my instructions. They are very clear. I can't see the printer, so if you don't tell me what I asked, then I can't give you any advice.
by moe on Jun 16, 2004 at 2:03pm Add comment
Lets keep it simple. I have posted numerous times the most common solution to your problem. You most likely have a shred of paper stuck under the plate below the toner cartridge. Just open the top, remove the toner. Below is a black plate with one screw securing it on the left. Remove the screw and wiggle the plate back and forth towards the rear and it will come out. Remove any paper which is usally on the left by the roller. Reassemble and test.
by dmzcompute on Jun 16, 2004 at 2:11pm Add comment
Moe: I am doing what I can but I just cannot see something that makes one evolution.

dmzcompute: there was a tiny piece of paper there but the problem remains.

Paper is just not taken in from both the lower and the MP tray.
by unknown on Jun 16, 2004 at 2:26pm Add comment
First lets make sure the motor is turning. Turn off the printer and turn it back on. You should hear the mmotor turn and in fact the rollers where the paper comes out should turn for a moment. Next press the button in front to do a self test. Do you hear the motor turn and does the paper attempt to be picked up. You can try the same test from the manual tray. If the roller turns and the bar lifts and the paper still does not go in, either the roller is bad or you still have something stuck in the paper path. Remove the plate again and stick a stiff piece of paper or carboard up the paper path to remove any obstruciton.
by dmzcompute on Jun 16, 2004 at 2:32pm Add comment
Starting up, motor, rollers rolling, everything as it used to be, so ok.
Selft test: as soon as the paper is going in it gets stuck. Underneath the black plate all seems clean.

Does it mean my roller needs to be replaced? I have a 6P I can use for spareparts.
by unknown on Jun 16, 2004 at 2:57pm Add comment
You need to be more specific. Did you try both inputs (Manual and paper tray)? If so what was the result of the lower tray and did you try the stiff paper or cardboard I told to you do in my last post. You have to do everything we tell you to do, not just what you want to do in order for us to get a better idea of what is happening. The lower roller for the tray is not something you want to have to replace and they very seldom go bad. I also want to make sure that only the jam light or tray light is on and not any other lights.
by dmzcompute on Jun 16, 2004 at 3:27pm Add comment
What I mean in my previous post about the lights is going from front to back which light is on when the motor stops. There are 3 amber lights so we need to know which one is staying on when the printer stops. If any other lights are on or flashing let us know which ones and whether they are flashing or on solid. This will go a long way towards solving your problem. Remember we do not see the printer, nor can we perform tests we would normally do. We count on you to do them and report the results.
by dmzcompute on Jun 16, 2004 at 3:37pm Add comment
Initializing printer is fine.
I tried both inputs.
In lower tray case the paper folds because it cannot get through.
In MP tray case the paper slides in for about 2 inches and stops.
I removed the black plate again and cleaned it. I used a stif cardboard and slide it through the opening, from both the inside and the outside. It seems clear.
by unknown on Jun 16, 2004 at 3:47pm Add comment
Did you slide the carboard from the bottom tray area up? The lights?
by dmzcompute on Jun 16, 2004 at 4:01pm Add comment
I did slide the cardboard from the bottom tray area up. On the left side, at the rubber wheel, it needs a thorough push but it goes through.

When I print (this routine from the MP tray), the paper is picked up and goes in a few cm's. From the firs green light, the first and second green lights burn, the first green lights goes on and off, paper goes in a little further and than the last light (only) burns red.
When I take out the cartridge I can see the paper under the black plate and I can actually pull it through under the black plate into the printer.
It seem mechanical, perhaps the rubber wheel (seems ok) ?

by unknown on Jun 16, 2004 at 11:53pm Add comment
I did slide the cardboard from the bottom tray area up. On the left side, at the rubber wheel, it needs a thorough push but it goes through.

When I print (this routine from the MP tray), the paper is picked up and goes in a few cm's. From the firs green light, the first and second green lights burn, the first green lights goes on and off, paper goes in a little further and than the last light (only) burns red.
When I take out the cartridge I can see the paper under the black plate and I can actually pull it through under the black plate into the printer.
It seem mechanical, perhaps the rubber wheel (seems ok) ?

by unknown on Jun 16, 2004 at 11:54pm Add comment
It may or may not be a mechanical problem. The code is just a plain paper jam message saying the sensor the paper must trip when the paper is fed was not tripped in the maximum time so the error happens and the printer stops. There is a sensor in the area where you fed the stiff paper. Make sure the flag moves forward and then back with a spring action, although I do not think is would be that since if it was in the wrong postion on powerup, you would get an immediate jam meswsage. If howerever, the flag itself is broken or off the track, it is possible even if the paper hits it it does not send a signal. (rare). I would try a NVRAM reset just to make sure there is no corruption in the NVRAM. Power off the printer and hold the back button Job/reset button while powering on the printer and continuue to hold for at least 20 seconds. Release and try the self test by hitting the go button. What botter me is you have a problem from both trays, but the motor runs and you say the manual tray roller turns. Try also to sort of help the paper move from the manual tray. What I do is lift the back edge of the paper not in the machine and sort of push it forward as the roller starts to turn. If it feeds then, it means the roller in the manual tray is bad, but then again it also means you have a problem with the bottom feeding assembly. What is wrong with the 5P you have for parts? It may be easier to repair that one then the one you are currently using.
by dmzcompute on Jun 17, 2004 at 7:18am Add comment
This is al done from the MF tray because I can better see what is happening plus short track through the printer.
---

NVRAM test
After releasing the button (pressing it for over 20 seconds), all leds light up after eachother slown than faster till only the first led lights up green. Pressing the last button (test) all ok until the actual printing, paper gets stuck.

Flag & helping paper through
Helping the paper through does not work, after picking up the paper and going in it gets stuck after 2 inches. I cannot prush it further, the paper is fold on the top-left side. There is no paper blocking it, it seems that the transparant thing on the left (on top of the black plate) blocks it. I exchanged the black plate (plus the transparant thing on top of it) with a HP 5P, the 5MP still does not work, the 5P still works.

Is it a sensor problem?
by unknown on Jun 20, 2004 at 5:16am Add comment
If you have a fold on the top left corner it means there is some obstructon which is catching the paper. I would remove the plate again and feed the paper by hand thru the manual tray to see what is catching it. Maybe a paper clip or some other small object in stuck and may look like it is part of the printer, but is not. Take the plate off the working printer and put both printer side by side and compare. Do the same paper test I mention on the working printer to see where the paper is being caught. The left side is where the pickup rollers are located so make sure they are smooth with no bumps or turning like maybe the shaft is bent.
by dmzcompute on Jun 20, 2004 at 8:23am Add comment
Without the plate it gets stuck as well. But than in 2 phases. First after 2 inches, after a short while it goes a little further until it gets stuck again. In total it can go in something like 4 inches.

I check it very thoroughly with the other one, it looks exactly the same.

Could it be a sensor, or a wheel?
by unknown on Jun 20, 2004 at 12:48pm Add comment
Because of the fold, I do not think it is a sensor although it is possible and something else is causing the fold. What I meant in my lasr post was to feed the paper from the manual trey by hand without power and without the plate and toner cartrige to see if you can see what is causing the fold. I also assume that by only going in 2 inches the paper does not clear the plate. Otherwise I would swap out the toner to see if it is causing the fold.
by dmzcompute on Jun 20, 2004 at 6:33pm Add comment
Sorry to jump in. I assumed that you have already remove and check and clean the oblique rollers at teh left side. Try loose the screw at the Oblique rollers and see. I had a LJ 6P that was doing the fold and I had to loose teh Oblique screw just a bit.
by unknown on Jun 20, 2004 at 6:36pm Add comment
Pushing it through can be done.

I tried another toner.
I tried another black plate.
I tried the black plate with loose screw, and without screw.
I tried the black plate without rollers.
I tried without black plate.

It doesn't matter, same problem. MT tray paper gets stuck after 2-4 inches and normal tray paper gets folded going up into the printer.

I give up.
by unknown on Jun 21, 2004 at 2:09pm Add comment