Image Density Check And Adjustment - Ricoh FT556 Service Manual

2. IMAGE DENSITY SENSOR CHECK AND ADJUSTMENT
ID sensor adjustment is required in the following
cases:
•
When the
ID sensor board is replaced.
•
When the main board is replaced.
•
When the drum has been replaced and Vsg —
is not within specifications.
•
When a problem with toner supply occurs
and checking the ID sensor shows that the
Vsg is not within specifications.
ADJUSTMENT STANDARD: +4 V ± 0.2 V
1. Clean the Image density sensor.
2. Copy a white sheet of paper to ensure that
the ID development area on the drum is
clean.
3. Turn off the main switch.
31 March '87
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