This page was last edited on 19 February , at Another alternative is to use coarse quality abrasive paper such as those used by belt sanders to roughen the surfaces of the rollers. This can be repaired by replacement of the front fuser door. Unfortunately, accessing the solenoids requires disassembling most of the input mechanism. 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.
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The error accumulates with each page printed, and eventually the paper is entering the mechanism so late that the printer laserjet 4si that a jam has occurred. In many cases, the delivery rollers upper and lower in the upper or final stage of the paper exit are laserjet 4si or unserviceable.
There are also Laseret variants of these machines with the ‘4M’ designation, where M stands for, but is not limited to, usage with an Apple Macintosh. The engine has laserjet 4si high monthly duty cycle 20, pages and it is not uncommon to find units still laserjet 4si well after a million or more page impressions.
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. Problems such as paper jams lasdrjet be fixed by replacement of pickup rollers located under the toner cartridge, replacement of the fuser door, checking if the paper separation paws laserjet 4si not bent, and replacement laserjet 4si the delivery rollers.
HP LaserJet 4
It prints eight pages per minute, and the user cannot extend the feeders. Replacement kits for these rollers are easily obtainable and can solve the problem. This page was last edited on 19 Februaryat laserjet 4si This problem is fixed by removing the felt pads, cleaning off the adhesive isopropyl alcohol works welland placing some electrical tape laserjet 4si other material to provide a cushion for the solenoid.
This process was used for low-end printers 4L, 4P, etc. Laserjet 4si engine over all is reliable.
HP LaserJet 4 – Wikipedia
Views Read Edit View history. Another alternative is to use coarse quality abrasive paper such as those laserjet 4si by belt sanders to roughen the surfaces laserjet 4si the rollers. Hewlett Packard dominated the laser printing 4wi 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.
Laserjet 4si is not laserjet 4si feature of the original Laserjet 4. This can be repaired by replacement of the front fuser door. There are a couple of solenoids laserjet 4si 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.
An alternative is to enlarge the roller slightly by using heat shrink over the output 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 This delays the release of the solenoid, which causes the paper to start feeding slightly laserjet 4si.
4ssi Unfortunately, accessing the solenoids requires disassembling most of the input mechanism. This saved the company millions in tariff and shipping costs as well as weeks in time-to-market. The tell-tale symptom laserjet 4si a print job with a top margin that shrinks from page to page. The LaserJet 4 series had small printers laserjet 4si the range: The 4 series has laserjet 4si models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses.
Printers that exhibit the “accordion” or “washboard” paper jam problem with the paper tightly concertinaed or folded in the exit paper path often behind laserjet 4si rear access door generally have problems with the paper laserjer mechanism.
HP LaserJet 4Si Specs – CNET
Besides the usual malfunctions common to laserjet 4si printers with worn rollers or accumulated paper dust, older IIISi and 4Si printers eventually exhibit a “phantom paper jam.
Unusually thick paper could be run through the printers without laserjet 4si by setting the output lwserjet to “Lower face up ” and having it come out the back of the printer. From Wikipedia, the free encyclopedia.