Step by step to fix error code 6820 on printer Canon GP-4000, GP-2000 and Canon GP-540, GP-520

[Nguyễn Hồng Liên]

Tôi đang gặp khó khăn về vấn đề và cần sự giúp đỡ để giải quyết. Máy in model GP-4000, GP-2000, GP-540, GP-520 gặp lỗi "A printer error has occurred."... Cần step by step to fix error code 6820 on printer canon gp-4000, gp-2000 and canon gp-540, gp-520

 

[Nguyễn Hồng Liên]

A printer error has occurred.

 

[Đỗ Khánh Hoàn]

A printer error has occurred.

 

[Dương Việt Hương]

Make a note of the detailed error code (ECxx-xxxx) that appears on the touch screen, and then turn off the power and unplug the power cord. Contact your Canon dealer for assistance.