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ADJUSTMENT
3 - 105
Gap confirmation jig
• Thermostat gap confirmation jig (JIG-FU-THRMST-BP)
Fig. 3-106
<Adjustment procedure>
(1) Take off the pressure roller cover from the fuser unit.
Service Manual “14.6.2 Pressure roller cover”
(2) Take off the entrance guide.
Service Manual “14.6.5 Entrance guide cover”
(3) Insert the thermostat gap confirmation jig at 2 points; the gap between the pressure roller center
thermostat and the pressure roller, and the gap between the pressure roller side thermostat and
the pressure roller. Insert it parallel to the thermostat surface.
(4) Confirm that the 1.6 mm section of the thermostat gap confirmation jig is inserted without
touching, but its 2.2 mm section contacts the thermostat surface. If this condition is met, end the
procedure because no adjustment is needed. If it is not, go to step (5).
Adjust the scale mark of the jig to the position shown below. If not, it makes the gap adjustment
incorrect.
(5) Change the screw hole of the adjustment screw to a long one. Leave the adjustment screw
loosened.
(6) Adjust the position of the bracket by moving it up or down while you are screwing until you can
insert the 1.6 mm section of the jig without touching, but its 2.2 mm section contacts the
thermostat surface.
Adjust the scale mark of the jig to the position shown below. If not, it makes the gap adjustment
incorrect.
1.6mm
2.2mm
Scale mark
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