Canon iR Advance 400iF/ 500iF Poor transfer of the image, hollow character

[Serviceman]

Models list: Canon imageRUNNER ADVANCE 500iF, 500i, 400i, 400iF
Image Failure: Poor transfer of the image, hollow character
Location

Transfer Roller (roller circumference: 50mm)

Cause

• Because of insufficient transfer output due to highly-resistive paper caused by reduced moisture content in paper by having the paper left untouched in a low humidity environment

• Because of insufficient transfer output due to highly-resistive paper caused by increased moisture content in paper by having the paper left untouched in a high humidity environment

Condition

• Paper left untouched in a low humidity environment

• Paper left untouched in a high humidity environment

Field Remedy

• Service mode (Lv.2)> COPIER> OPTION> IMG-TR> TROPT-SW> -2 to 1

-2: Transfer output voltage moreover decreases.

-1: Transfer output voltage decreases.

0: OFF

1: Transfer output voltage increases.