If your printer shows "Toner cartridge chip cannot be recognized", Pantum's troubleshooting guide recommends cleaning:
The Pantum P2200 toner cartridge chip connector (often called the chip contact spring or cartridge guide sensor) is the small electronic component inside the printer that touches the toner chip. It facilitates communication between the toner cartridge chip and the printers formatter/logic board, transferring page-count and recognition data
CHIP Compatible for USE in PANTUM P2200, 6550, M6550W
sensor TONER CARTRIDGE CHIP CONTACT SPRING FOR PANTUM






Price:
Price 250.0 INR / Piece
Minimum Order Quantity : 1 Piece
Color : Black
Pattern : OE Replacement
Print Technology : Inkjet
Printing Speed : Depends on printer PPM
Price 2850.0 INR / Piece
Minimum Order Quantity : 1 Piece
Color : Black & Grey (as shown in image)
Pattern : As per OEM specifications
Print Technology : Inkjet
Printing Speed : As per printer model capability
Price 50.0 INR / Number
Minimum Order Quantity : 1 Number
Color : Green (Photoconductor Drum Surface)
Pattern : Cylindrical
Print Technology : Electrophotographic (Laser)
Printing Speed : Up to 1500 Pages (per cycle, depends on cartridge and printer)
Price 1950.0 INR / Piece
Minimum Order Quantity : 1 Piece
Color : Green (PCB)
Pattern : Standard PCB layout
Print Technology : Impact Dot Matrix
Printing Speed : Depends on printer model