Best Cyber Monday deals at Staples: Power supply – integrated. The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. Laptops by Dan Ackerman Nov 26, Common Fixes of the LaserJet 4V and 4MV model can have accordion jam as well, caused either by a worn roller or broken tooth on the gear at the fuser door. Power on to Device Ready.

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HP LaserJet 4

Retrieved from ” https: Printers by Rick Broida Oct 16, Replacement kits for these rollers are easily obtainable and can solve the problem.

Power on to Device Ready.

Expansion Slots Total Qty. These models also feature a W power saving stand-by mode, which was not included in the original Laserjet 4.

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The engine has a high monthly duty cycle 20, pages and it is not uncommon to find units still functioning well after a million or more page impressions. Similar models of earlier HP laser printers had this feature, but it became less common with the later models.

This saved the company millions in ,aserjet and shipping costs as well as weeks in time-to-market. The engine over all is reliable. Researchers find way to track ‘untraceable’ 3D-printed guns The 3D-printer leaves a hardware fingerprint.

This can be repaired by replacement of the front fuser door. A sweet deal on a Qi charger for the car.


This delays the release of the solenoid, which causes the paper to start feeding slightly late. This is not a feature of the original Laserjet 4. Looking for a tech gift that’s not too expensive?

Unusually thick paper could be run through the printers without jamming by setting the output tray to “Lower face up ” and having it come out the back of the printer. By using this site, you agree to the Terms of Use and Privacy Policy.

Printer: HP LaserJet 4Si | OpenPrinting – The Linux Foundation

The error accumulates with each page printed, and eventually the paper is entering the laserhet so late that the printer believes that a jam has occurred. There are also PostScript variants of these machines with the ‘4M’ designation, lasegjet M stands for, but is not limited to, usage with an Apple Macintosh. From Wikipedia, the free encyclopedia. Headphones by David Carnoy Dec 17, This problem is fixed by removing the felt pads, lawerjet off the adhesive isopropyl alcohol works welland placing some electrical tape or other material to provide a cushion for the solenoid.

The LaserJet 4 series had small printers in the range: Problems such as paper jams can be fixed by replacement of pickup rollers located under the toner cartridge, replacement of the fuser door, checking if the paper separation paws are not bent, and replacement of the delivery rollers.

HP LaserJet 4Si MX Overview – CNET

HP LaserJet 4si – printer – monochrome – laser Series Sign in to comment Be respectful, keep it civil and stay on topic. There are a couple of solenoids at the paper tray input mechanism that have felt pads designed to cushion them when they snap on, and the glue holding these pads in place can migrate to the surface. Hewlett Packard dominated the laser printing sector during this time in part due to their reliability, relatively affordable pricing, and the spread of LaserJet 4 models from personal use up to heavy business use.


The 4LC was the “first printer designed exclusively for the Chinese market”, [5] and was released by HP in April The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. This page was last edited on 26 Septemberat Printers that exhibit the “accordion” or “washboard” paper jam problem with the paper tightly concertinaed or folded in the exit paper path often behind the rear access door generally have problems with the paper exit mechanism.

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An alternative is to enlarge the roller slightly by using heat shrink over the output rollers. Media Feeder Max Format. Envelopes, transparencies, labels, plain paper. Lasdrjet process was used for low-end printers 4L, 4P, etc.