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4.5 Remove screws A and B and pull out the fuser cleaning
roller cover and the upper heat roller separation fingers
assembly. See figure 15.
4.6 Clean the tips of the separation fingers with acetone.
Remove the cleaning roller assembly A and remove the
roller itself. Make sure not to loose the two bushings. Clean
the roller with vacuum cleaner by applying moderate force
to the roller. Note – be careful when you clean the ends of
the roller not to unwrap the cleaning felt wound around the
roller. If there is so much toner you can't clean with vacuum
cleaner moisten a cloth with acetone and rub the roller.
Apply moderate amount of silicone oil to the roller felt.
4.7 Remove screws B and remove the fuser roller cleaning blade.
Clean the tip of it with acetone.
4.8 Remove gears C and D, clean the teeth with brush and using
a cotton stab with acetone clean the gear C shaft and the
hole of the gear itself. Note – do not apply any lubricant to
the gear's shaft. See figure 16.
B
D
C
4.9 Clean with acetone the upper A and lower B guide plates of
the fuser unit. See figure 17.
B
A
B
15
5. Image process unit maintenance
5.1 Unplug the connector A. First push the main charger in the
14
direction B and the lift it careful not to scratch the OPC
Drum. Pull out the assembly in direction C.
5.2 Lift the tabs D and unplug connector E. Pull out the
developer unit in direction F. See figure 18.
5.3 Inspect the developer unit. Check if the roller guides A are
rotating freely. Check if the cover seal B is on top of the
side seals of the developer roller. Clean with vacuum
cleaner the accumulated toner under the magnetic roller as
well as around the side seals C.
5.4 Check if the unit is mechanically sound by rotating the input
gear D in the direction shown. If there is too much torque
needed to turn it, this is an indicator that there are problems
16
in the unit which will be discussed in following articles. See
figure 19.
19
A
D
C
A
A
C
B
B
17
B
18
D
F
A
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