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. 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. Similar models of earlier HP laser printers had this feature, but it became less common with the later models. Views Read Edit View history. From Wikipedia, the free encyclopedia. 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. However, any printer mechanism is subject to wear and degeneration, and typically printers still in use have now seen long service the machine being discontinued with the introduction of the Laserjet 5 in
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The LaserJet 4 series had small printers in the range: This is not a feature of the original Laserjet 4. This page was last edited on 7 Julyat Problems such as paper jams can be fixed by replacement of hp laserjet 4si rollers located under the laserje cartridge, replacement of the fuser door, checking if the paper separation paws are not bent, and hp laserjet 4si of the delivery rollers.
Retrieved from ” https: Views Read Edit View history. From Hp laserjet 4si, the free encyclopedia. In many cases, the delivery rollers upper and lower in the upper or final stage of the paper exit are worn or unserviceable.
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 hp laserjet 4si the paper exit mechanism.
A feature of the 4Si particularly dear to graphic designers was the straight paper feed. The tell-tale symptom is a print job with a top margin that shrinks from page to page. However, any printer mechanism is 4sl to wear and degeneration, and typically printers still in use have now seen hp laserjet 4si service the machine being discontinued with the introduction of the Laserjet 5 in Unusually thick paper could be run through the printers without jamming by setting the output tray to “Lower 4so up ” and having it come out the back of hp laserjet 4si printer.
HP LaserJet 4si Mono Laser Printer
A quality abrasive is needed to ensure no particles are shed into the mechanism. These models also feature a W power saving stand-by mode, which was not included in the original Laserjet 4. This process was used for low-end printers 4L, 4P, etc. This problem hp laserjet 4si fixed by removing the felt pads, cleaning off the adhesive isopropyl alcohol works welland placing some electrical tape or other material to provide hp laserjet 4si cushion for the solenoid.
It prints eight pages per minute, and the user cannot extend the feeders. An alternative is to hp laserjet 4si the roller slightly by using heat shrink over the output rollers.
Another alternative is to use coarse quality abrasive paper such as those used by belt sanders to roughen the surfaces of the rollers. Unfortunately, accessing the solenoids requires disassembling most of the input mechanism.
Common Fixes of the LaserJet 4V and 4MV model can have accordion jam as well, caused either by a worn hp laserjet 4si or broken tooth on the gear at the fuser door. However the driver for the HP LaserJet 4 exists in hp laserjet 4si, even older, software products and is a popular substitute driver for other PCL compatible printers.
North America, Europe and Asia. HP LaserJet printers Computer-related introductions in This can be repaired by replacement of the front fuser door.
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. This saved the company millions in tariff and shipping costs as well as weeks in time-to-market.
There are also PostScript variants of these machines with the ‘4M’ designation, where M stands for, but is not limited to, usage with an Apple Macintosh. The engine hp laserjet 4si a high monthly duty cycle 20, pages and it is not uncommon hp laserjet 4si find units still functioning hp laserjet 4si after a million or more page impressions.
HP LaserJet 4 – Wikipedia
Replacement kits for these rollers are easily obtainable and can solve the problem. The error accumulates with each page printed, and eventually the paper is entering the mechanism so late that the printer hp laserjet 4si that a jam has occurred. Besides the usual malfunctions common to laser printers with worn rollers or accumulated paper hp laserjet 4si, older IIISi and 4Si printers eventually exhibit a “phantom paper jam.