Adjustment Of Fuser Unit - Toshiba e-STUDIO520 Service Handbook

3.10 Adjustment of Fuser Unit

3.10.1 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 entrance guide with the image side facing down while
turning the jam release lever CCW until the center of the copy paper isnipped 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.
(7) Remove 2 screws and take off the cleaning web unit.
(8) If |F-R| >= 0.5mm, lift up the upper separation finger unit and loosen the fixing screw of the pres-
sure spring on the side with the wider nip width. One half turn corresponds to narrowing the
nipped section by about 0.5mm.
e-STUDIO520/523/600/603/720/723/850/853
ADJUSTMENT
Rear
R
F
Nipped part
Front
Fig. 3-48
3 - 50
Copy paper ( solid black )
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