Symptom; Possible Cause; Countermeasures; Uneven Density Among Different - Ricoh G157 Service Manual

IMAGE QUALITY
4.4.25 UNEVEN DENSITY AMONG DIFFERENT PAGES

Symptom

The image density is not the same for each page, or it changes suddenly.

Possible Cause

1) The cable of the ID sensor is disconnected.
2) The ID sensor is stained.
3) The cleaning mechanism of the ID sensor is broken.
4) The ID sensor does not work.

Countermeasures

1) Check that the massage "Belt marker sensor error" is displayed. This
message is displayed when the ID sensor fails.
2) If you see the message, check these components:
• The ID sensor cable
• The ID sensor
• The cleaning mechanism of the ID sensor
NOTE: The copier operates even when the message " Belt marker sensor error "
is displayed. In a condition like this, the image density on the outputs can
be incorrect.
G157 4-36 SM