Question about HP LaserJet 4si Printer

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HP LJ4si picks paper late.

Even with new pickup rollers. Have three, all have developed the same problem. Reports an internal jam because it doesn't sense the paper. Will pick 5-10 pages just fine, then one will be off a little but not enough to stop the printer. Next 3 or 4 might be fine. At some point a page will be at least a half inch off and the printer will stop. Once the problem starts, the it might occur every 3 or 4 pages.

Acts like a switch or sensor is bad. Or maybe something wrong on a controller board which tells the printer when to pick the paper?

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Posted on Jan 02, 2017


SOURCE: HP Laser Jet 4L Printer Model #C2003

Try lowering the toner density using the printing software or the printer menu.

Posted on Feb 07, 2008

  • 1362 Answers

SOURCE: My HP LaserJet 2430dtn Paper jam

Try this, make a print from the by-pass tray, does it go OK or jam??
If it jams then there is a problem with the paper feed from the tray.
If it jams then
1-check the drum and see if there is an image on it( you can put a mark on the edge to see if it's rotating, thus eliminating the drum unit)
2-same for the reg roller
3-check for labels ar foreign objects

Posted on Oct 10, 2008

SOURCE: HP laserjet 4L paper jam after printing one page.

You need the pick up rollers replaced. Call your service centre to replace pick rollers as these are feeding the pages crocked

Posted on Aug 31, 2009

Salim Baig
  • 283 Answers

SOURCE: HP P3005DN Tray 2 pickup


This is a problem with the Pickup roller.

Try to inspect the paper pickup roller, on the right side of the roller you can find a small notch which gets coupled with the shaft it will be broken. You have to replace the roller.


Posted on Jul 15, 2011

  • 1121 Answers

SOURCE: HP 4100dtn Tray 2 picks the paper NON-STOP?

Step 1:Check with another cartridge
Step 2:Switch off the printer take out tray 2 casette, swich on the machine check while intializing the printer tray 2 pick up roller rotating?.. If its rotating check solnoid which is located right side under the main moto assembly, clean the solnoid as shown in the anap shot..fix it back.
Step 3:Open right ,left & top covers.., close cartridge access door check is it driving the laser scanner shutter?, if not check the sccess door knotch broken/bend.

Posted on Nov 20, 2011

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I do not know for sure on the Samsung but on HP's this problem is often caused by the pickup solenoid sticking. There is usually a foam bumper on the pickup solenoid which breaks down over time and then the adhesive stops the solenoid from releasing properly. You can clean it off all the old foam and adhesive and run without it, just make printer a little noisier. The solenoid will usually be on the right side.

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See the snap shot,view from under.
Pickup roller( red)
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Bee care full while removing roller, paper sensor flag should not distubed(yellow)
bee pateince dont do of luck.


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Hello. During printing I often can see error message 13.01.00 - paper jam, but really nothing jammed. I have printer HP LaserJet p3005. Thanks

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There is still paper stuck in the printer. try lifting the printer off of tray 2 to inspect it or here it is straight from the service manual...

Jams in tray 2

Table 7-10 Causes of tray 2 jams

Cause Solution

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2 Measure the resistance between the cable connectors.

3 If the measured resistance is not approximately

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Dirty, worn, or deformed pick-up roller, cassette separation

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Clean the rollers if they are dirty. Replace any worn or

deformed rollers. The cassette separation roller and the

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Damaged gears in the cassette pick-up drive unit. Move the gears in the cassette pick up drive unit. If the

gears are not rotating correctly, or are damaged or worn,
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