![]() ![]() ![]() Be sure before you work on it or plug/ unplug things that you turn on the power button with the power cord unplugged and wait for the green light to disappear. Here are some possible solutions that I found: HP LaserJet 4 L, 4ML, 4 p and 4MP series printers. Note: The capacitors in this printer seem to hold an unusually high amount of charge. Refurbished 250 sheet paper cassette, replacement for tray 2 built-into printer. Once done, you can re-tension the spring and repeat your previous steps in reverse. ( be sure not to touch electrical in the system or to unplug the sensor during use) Once you have isolated the problem, it can be overcome by removing the screw on the back of the sensor and removing the printed circuit board. ![]() The sure fire way to test this is to unplug the sensor from the sensor control board in the back of the printer and see if the thing fires up without an error. otherwise the spring will get out of the grove and the plastic paper sensor will stay in the slotted optoisolator and abnormally show that there is a jam. SHOP INK OR TONER NOT AVAILABLE Product CE459AABA Special offers Questions Return and exchange information HP. If the display panel on your HP LaserJet reads Perform Printer Maintenance, Perform User Maintenance, Maintenance Kit Low, Maintenance Kit Very Low, or anything along those lines it means your printer needs a preventative maintenance kit, which includes a fuser and various rollers. ![]() The problem is that when replacing this part after servicing, say rebuilding your fuser roller assembly, this piece must be fed though the the paper feed assembly. 1 3 4.2 (65) Ask a question HP LaserJet P2055dn Printer This printer has been discontinued. The problem is actually in the duplex sensor attached to the back of the print guard, which is accessible via removing both sides of the printer facade and the removing the paper feed assembly. ![]()
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