HP LaserJet 4

How to Identify and Fix Common Problems ?

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If you are seeing the 41.3 error on a LaserJet 4, 4Plus, or 5 series printer, and you find a blank sheet of paper in the path, your printer is probably having a failure with the solenoid on the paper feed assembly. This is becoming a common issue as these printers get older.
The 41.3 Paper Size error happens when there is a mismatch between what the computer application asks for and what the printer can provide, and/or what the printer sees happening as paper passes through. If the paper takes too short or long a time passing over the printer sensors this error gets raised.
41.03 is often caused by paper being set to one size and another sent.
just GOTO settings > printer properties of your printer > preferences>paper quality >change the paper to A4 size . and restart the printer.
This error has nothing to do with the laser/scanner—it means “unexpected paper size.” The printer measures paper size two ways: The paper cassette has a set of ridges and/or levers usually found on the right side.
In some cases the reason for error code 41.7 is that the rollers grabbing fresh paper are not sticky enough any more. In this case I used spray for climbing skins (e.g. colltex) to make them stickier again, and the problem was resolved.
The 41.2 error in the LaserJet 5Si, 8000, 8100 and 8150 is typically caused by high voltage arcing that disrupts the beam detect circuit. The most common cause of arcing is a bad connection to the transfer roller.
The error may occur when there is a communication issue between the formatter and the scanner. Turn the printer off and then back on to clear the error message. note: Performing this action will remove all custom configurations, settings, and files.
Typically, the 41.08 error occurs when the printer “hangs” during the time when “processing job” appears on the control panel. The printer usually rotates up and down repeatedly; it may eventually complete the print job, but usually requires cycling the power to resume operation.
Make sure that the tray is loaded with the correct paper size and that the sliding paper guides are correctly adjusted to the correct paper size. Print internal pages from all trays to verify that this error only occurs when printing from the PC.
41.03. 02 is media size miss match, it thinks the media in tray 2 is different to the one specified. First checks would be the printer configuration to check what it thinks is loaded, then check this against the pc drivers in case something is trying to over ride the setting.
B2, 41.03. C2 Error. The printer detected a different paper size than expected.
This event indicates that some unexpected activity prevented Windows from shutting down correctly. Such a shutdown might be caused by an interruption in the power supply or by a Stop error. If feasible, Windows records any error codes as it shuts down.
63.00. 41 There is an error in the toner supplied to the black developer. HP LaserJet Black Developer Unit: 8JM70-67001 (E783xx series) or JC96-11666A (E778xx series}. If the firmware bundle installed on the printer is lower than 4.6.
There are 3 possible issues with the Error code 41. The first is when a Dummy sensor is installed but the instrument believes an actual sensor is installed. The second is a loose ribbon cable. The third is a bad PCB.
The 41.2 error in the LaserJet 5Si, 8000, 8100 and 8150 is typically caused by high voltage arcing that disrupts the beam detect circuit. The most common cause of arcing is a bad connection to the transfer roller.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My printer feeds through one piece of paper all the way and then a half piece of paper and stops. I pull out the paper to stop the paper jam and then it prints but sounds rough. After printing, it doesn't feed the paper all the way through.
ANSWER : And the first 2 sheets, the full and half sheet that go through first, are blank.

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HP LaserJet 4

balky manual feed
ANSWER : Sensors never go bad. Judging by the fact that you are using card stock and it works 20% of the time, I would blame the pickup roller as being too worn to pick up the heavier card stock. Try using plain paper and you’ll see I’m right.

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HP LaserJet 4

Paper feed
ANSWER : Judging by your other post, you must have read that you need to remove the laser scanner assy and lubricate the spinning mirror shaft. Good luck.

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HP LaserJet 4

Canon Pixma MX870, Error 6000 and Service Manual
ANSWER : Brand new MX922. Printed a couple of pics and now the 6000 error. Can’t see any obstruction. Could you provide the manual for dismantling the unit further? Or pointers for getting further into the box than just looking through the little folding inkwell door?

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HP LaserJet 4

sheets feeding or printing slightly crooked
ANSWER : Actually it’s a model 5040, but it appears identical to the photo at right.

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HP LaserJet 4

Brother Hl-2040 paper over feed
ANSWER : Your instructions saved me..I had the board off 3 times before i saw your pix….thanks so much!

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HP LaserJet 4

feed issue
ANSWER : Haven’t seen this issue on that model. Solenoids never go bad. Every solenoid HP has ever used has this sponge to dampen the clicking noise. The sponge will disintegrate from heat and use and then become sticky. This causes the pickup roller release plate to stick and allow the roller to rotate continuously. All you have to do is scrape off the goo and replace with thin sticky backed felt. I’ve fixed thousands of them this way.

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HP LaserJet 4

Service Manual needed to check PS Voltages
ANSWER : I really doubt you can find a service manual for it, if they even exist.

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HP LaserJet 4