White Spots/Toner Blasting - Ricoh Pro C7500 Original Instructions Manual

No Replace the PCU cleaning unit.
"4 PCU Cleaning Unit (Black)/18 PCU Cleaning Unit (Cyan)/32 PCU Cleaning
Unit (Magenta)/46 PCU Cleaning Unit (Yellow)/60 PCU Cleaning Unit (Special)",
Regular Maintenance Guide

White Spots/Toner Blasting

White Spots
White spots of 0.2 - 0.3 mm in diameter appear.
Toner Blasting
Toner is scattered around a solid-fill print.
Cause:
This is due to electrical discharge in the paper transfer unit.
Paper dust on the guide board and transfer timing roller may stick to the paper and produce white spots.
This is prone to occur when printing is performed in a low-temperature, low-humidity environment or on
recycled paper, cut paper, or high-friction coated paper, which produces a lot of paper dust.
M0EBIC0102
M0EBIC0103
Spots
189