If print quality declines after refilling, consult technical papers like the Cartridge Repair Guide for these signs:
: Rejoin the two halves and reinsert the metal pins. If you drilled holes, seal them with flexible black silicone. Common Troubleshooting hp 1200 instruktsiia po zapravke
Detailed guides such as those from Mnogochernil and Uninet Imaging outline the following technical steps: If print quality declines after refilling, consult technical
: Drill small holes next to the pins and push them out from the inside. : Usually points to a worn magnetic roller or doctor blade
: Usually points to a worn magnetic roller or doctor blade. Comparison: Neverstop Laser 1200
The (using the 15A/C7115A cartridge) is refilled by disassembling the cartridge to access the toner hopper and waste chamber. Unlike modern "Neverstop" models, this older series requires physical intervention—typically removing two metal pins—to separate the drum unit from the toner reservoir for cleaning and refilling. Refilling the HP 15A (C7115A) Cartridge