Question about HP LaserJet 4si Printer
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: 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
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
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
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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Jams in tray 2
Table 7-10 Causes of tray 2 jams
The feed or separation rollers are dirty, worn, or damaged. Clean the rollers. If they are dirty after cleaning, or if they are
worn or damaged, replace the rollers.
The pickup roller is worn or damaged. Replace the pickup roller.
The tray 2 paper pickup assembly drive gears are damaged
or the assembly is defective.
Check the drive gears in the paper pickup drive assembly.
Replace the pickup drive assembly if the gears are
damaged. See Paper-pickup drive assembly.
The tray 2 pickup solenoid (SL101) is damaged. 1 Disconnect the connector for the tray pickup solenoid
from the dc controller PCA (location J92).
2 Measure the resistance between the cable connectors.
3 If the measured resistance is not approximately
160 ohms for the HP LaserJet 4200/4300, or 110 ohms
for the HP LaserJet 4250/4350, replace the tray 2
The tray 2 lifter-drive assembly or the stack position
sensor (PS107) is defective.
Replace the lifter-drive assembly. See Tray 2 lifter-drive
assembly and/or Printer switches and sensors.
The dc controller PCA is defective. Replace the dc controller PCA. See Dc controller PCA.
Dirty, worn, or deformed pick-up roller, cassette separation
roller, and cassette feed roller.
Clean the rollers if they are dirty. Replace any worn or
deformed rollers. The cassette separation roller and the
cassette feed rollare are to be replaced together.
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,
replace the cassette pick-up drive unit.
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