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AR-651/810 ADJUSTMENT
3. 9. Adjustment of Fuser Unit
3. 9. 1. Adjustment of fuser roller pressure
Normally, the heat roller pressure need not be adjusted. However, it must be carried out when wrinkles
frequently appear on copies made on plain paper.
<Procedure>
(1) Open the RADF and make a copy with A3/LD size (solid copy).
(2) Turn the power OFF after copying is finished.
(3) Open the front cover quickly, and pull out the transfer/transport unit.
(4) Insert the copy made in (1) into the fuser inlet guide with the image side facing down while turning the
jam release lever CCW until the center of the copy paper is nipped by the heat roller.
(5) Leave the copy paper for about 20 seconds, and then take it out by quickly turning the jam release
lever CCW again.
(6) Measure the width of the area nipped by the heat and pressure rollers at the front and the rear.
R
F
Nipped area
Front
Rear
Copy paper(solid black)
(7) If |F-R| >
= 0.5mm, lift up the upper separation finger unit and loosen the fixing screw of the pressure
spring on the side with the wider nip width. One half turn corresponds to narrowing the nipped section by
about 0.5mm.
(8) If |F-R|<0.5mm, the adjustment is completed. Close the RADF and make five blank copies with A3/
LD size to clean the heat and pressure rollers.
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