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error HP
Error Code Periodic black band (Supply Roller damage)
Black periodic band indicates supply roller is faulty or damaged, causing toner application inconsistencies.
? What Causes This
Friction issues with transport mechanism or irregularities developing along the path of paper movement.
✓ How to Fix It
Replace the Supply Roller within a toner cartridge assembly per manufacturer specifications and disposal instructions.
Source: page 59 of the official manual
From the manual
This error code appears in:
HP Samsung Xpress SL M2020 Laser Printer Series