Unable to recognize ink cartridge

A problem we sometimes have with printer cartridges is “printer unable to recognize cartridges” or similar error. We have had some success with the procedures listed below. These procedures involve cleaning the cartridge and printer contacts as well and a 15 second power restart. Note: This cleaning procedure is written as a universal procedure and you may have…

HP Colour Laserjet 1600 Magenta Printing Light

The HP Laserjet 1600 and similar machines are prone to a deterioration in print quality over time, starting with magenta because its the bottom cartridge. The fault is caused by dust and toner building up on the laser glass/lenses and mirrors. Here is the procedure to fix this fault: Fix One: Clean laser glass slits with…