Ricoh 002052MIU User Guide - Page 112

TONER CARTRIDGE (AIO) SERVICE Fault White or Black Spots Signs • Light or dark black dots on the image occur periodically. • White spots occur in the image periodically. Cause & Check 1. If light or dark periodical black dots occur, this is because the developer rollers are contaminated with foreign substance or paper particles. • 37.7mm interval : Charged roller • 75.5mm interval : OPC cycle Solution 1. In case of 1 - Run OPC Cleaning Mode Print 4-5 times repeatedly to remove. Especially check foreign substance on the OPC surface, then remove them with a clean gauze moistened with IPA (Isopropyl Alcohol) not to damage OPC if necessary. Never use usual alcohol. 2. If white spots occur in a black image at intervals of 75 mm, or black spots occur elsewhere, the OPC drum is damaged or foreign substance is stuck to the surface. 2. In case of 2 If they do not disappeared by running the OPC Cleaning Mode Print 4-5 times. • at intervals of 37.7 mm - Replace the AIO. • at intervals of 75 mm - Remove foreign substance. • Broken image Replace the AIO. 3. If a black and white or graphic image is partially broken at irregular intervals, the transfer roller's life has been expired or the transfer voltage is abnormal. 3. In case of 3 Exchange the transfer roller because the life of the transfer roller in use has been expired. (Check the transfer voltage and readjust if different.) B173 4-46 SM