jcryanjr

asked Jun 27, 2006 at 6:48pm
Hp HP LaserJet IIIP+

HP IIIP form feeds until empty

HP IIIP printer started today running paper through until empty. Problem repeats itself after power off and on cycle, when the printer is unconnected to any PC system, after the engine test button is pushed, and after a cold reset.

If a print job is sent to the printer it will print normally as soon as the current blank page running through the printer is finished. Once the print job is complete the multiple form feeds resume.

Some posts in the forum imply the formatter board has died. I would appreciate it if someone could confirm that.

Many thanks
Which tray? MF tray, lower cassette or both? The one thing it definitely is not is the formatter board. I don't know where you derived that from this forum? Did you look at this kit? http://www.fixyourownprinter.com/kits/hp/K10
by moe on Jun 27, 2006 at 10:15pm Add comment
Moe,

Paper is feeding from the fold out tray, there is no lower cassette.

The printer is not providing any error codes.

If I take it offline it continues to form feed.

My rash assumption on the formatter board came from:

http://www.fixyourownprinter.com/forums/laser/31881#1

(And I accidently posted a dup question on the forum this morning. Anyway for me to delete it?)

Thanks...
by jcryanjr on Jun 28, 2006 at 9:21am Add comment
I removed the dupe. At the right of the pickup roller shaft, you'll see a solenoid with a spring loaded brass plate. If the plate is stuck down or popped out of position, it would allow the pickup roller to constantly rotate. It's only supposed to rotate once and then the plate pops up to stop it.
by moe on Jun 28, 2006 at 9:32am Add comment
The brass plate was off the solenoid base. I repositioned it with the notches in the plate setting on the posts on top of the solenoid. Unfortunately that did not cure the form feeds. The brass plate depresses about a 1/16th inch or so and doesn't seem to be contacting the solenoid plunger (the top of which is flush with the top surface). Has the solenoid died?

Thanks...
by jcryanjr on Jun 28, 2006 at 11:03am Add comment
Solenoids never, ever go bad. That being said, you probably didn't get the plate back on right. There is a spring that pulls it away from the solenoid. You should be able to push it all the way down with your finger and it should spring back up when you release it. If that isn't happening, then you mounted it wrong. The little tang on top should engage the plastic on the pickup roller and inhibit it from turning till the solenoid pulls it in.
by moe on Jun 28, 2006 at 12:50pm Add comment
I also have a IIP plus that is working fine. The plate is positioned the same on both printers. The downward movement of the plate and rebound are the same on both. The tang does appear to have engaged the pickup roller.

Both plates only seem to depress a sixteenth of an inch or so downward and rebound equally. Should they have more play in them than that?

Thanks..
by jcryanjr on Jun 28, 2006 at 1:17pm Add comment
Moe,

I've had no luck on the HP forum as well for a solution. Any thoughts on where else to look?

Thanks...
by jcryanjr on Jul 5, 2006 at 7:59am Add comment
You really expected a solution on the HP forum? Once again, the only thing that could cause the problem is that plate staying down allowing the pickup roller to continuously turn. Since I can't see it happening, that is all the help I can give you.
by moe on Jul 5, 2006 at 11:41am Add comment
Moe,

FYI -- I replaced the DC controller in response to your solution to a different issue on this printer and it fixed this problem as well.

Thanks...
by jcryanjr on Sep 6, 2006 at 1:46pm Add comment