The printer Canon i SENSYS LBP6030B Prints a Blank Page

Printer Canon i-SENSYS LBP6030B Prints a Blank Page or Does Not Print Black or Color toners. The Canon i-SENSYS LBP6030B printer prints a blank page in copy mode or after printing from a computer. That is no black or colored ink is applied to the paper. There may be three reasons for this problem. 1. The laser control unit does not work. 2. The printer laser itself does not work. 3. Missing one of the contacts of the Canon 725 cartridge. After removing the Canon 725 cartridge and carefully examining, it turned out that one of the printer contacts is missing, which gives a negative or positive charge to the cartridge. The contact was bent after the wrong installation the cartridge and did not leave his seat. Since it was not possible to fix the bent contact without disassembling the printer, since the contact did not leave its place, we had to disassemble the printer to fix the bent contact. After fixing the contacts and assembling the Canon i-SENSYS LBP6030B printer, the contacts between the printer and the cartridge were restored and the printer was able to print the page normally. Printer problems 1. Why is my Canon i-SENSYS LBP6030B printer-printing white paper? 2. The white paper comes out of the Canon LBP6030B printer after printing. 3. The Canon i-SENSYS LBP6030B printer had problems with the contacts of the Canon 725 cartridge. 4. After installing the cartridge incorrectly, on the Canon i-SENSYS LBP6030B printer had bent contacts that give a negative or positive...