An alternative is to enlarge the roller slightly by using heat shrink over the output rollers. Unfortunately, accessing the solenoids requires disassembling most of the input mechanism. Tablets by David Carnoy 7 days ago. Power on to Device Ready. Laptops by Dan Ackerman Sep 25,

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We delete comments that violate our policywhich we encourage you to read. This process was used for low-end printers 4L, 4P, etc.

The LaserJet 4 series had small printers in the range: HP LaserJet 4si – printer – monochrome – laser caabb. Power Device Voltage Required Margin. A sweet deal on a Qi charger for the car. Media Handling Media Path Type. Tablets by David Carnoy Dec 13, This saved the company millions in tariff and shipping costs as well as weeks in time-to-market. A cheap and charming color laser printer A cheap and charming color laser printer by Dan Ackerman. HP LaserJet 4si – printer – monochrome – laser Series Sign in to comment Be respectful, keep it civil and stay on topic.


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. 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.

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HP LaserJet 4 – Wikipedia

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In many cases, 44si delivery rollers upper and lower in the upper or final stage of the paper exit are worn or unserviceable. It prints eight pages per minute, and the user cannot extend the feeders. This can be repaired by replacement of the front fuser door. This is not a feature of the original Laserjet 4.

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Workgroup printer – laser – monochrome. Discussion threads can be closed at any time at our discretion.

HP LaserJet 4

System Requirements OS Required. Be respectful, keep it civil and stay on topic. Power on to Device Ready. Researchers find way to track ‘untraceable’ 3D-printed guns The 3D-printer leaves a hardware fingerprint.

HP LaserJet printers Computer-related introductions in From Wikipedia, the free encyclopedia. Power supply – integrated.

Similar models of earlier HP laser printers had this feature, but it became less common with the later models.

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.

Max Media Size Custom. Another alternative is to use coarse quality abrasive paper such as those used by belt sanders to roughen the surfaces of the rollers.