Ricoh A085, Manual

Page: 521 / 617

6.13 CHARGE CORONA WIRE HEIGHT ADJUSTMENT
NOTE: a) The charge corona wire height adjustment should be done
only when the front end block is replaced.
b) Before replacing the front end block of the charge corona unit,
adjust the uneven exposure with the exposure adjusting plates
and make a copy sample with the test chart for the reference.
1. Remove the wire cleaner and the front end block cover [A] (1 plastic
screw) from the charge corona unit.
2. Adjust the gap "X" (between the wire height adjusting block and the screw
holder edge) to 8.0 mm by turning the wire height adjusting screw [B] as
shown in the illustration.
3. Reassemble the charge corona unit and set it in the copier.
4. Make copies with the test chart and compare the front and rear gray
scales with those of the reference copy made before replacing the front
end block. Adjust the corona wire height by turning the wire height
adjusting screw, if necessary.
Turning the screw clockwise decreases the image density at the front
side.
Turning the screw counterclockwise increases the image density at the
front side.
[A]
[B]
X
Replacem
ent
Adjustm
ent
12 February 1992 AROUND THE DRUM
5-65