Mita-Kyocera FS-6900 Service Manual PART5

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This chapter provides procedures for removal and replacement of field replacement components. For other components not shown in this chapter, the diagrams in the attached with this manual will help locate the compon ent.

For replacement of a component, use the reverse of the removal procedures explained in this chapter.

Before proceeding, make sure printer power is switched off and the power cord is un-plugged from the printer. See

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Screws and hardware used in the printer are listed in the beginning section of the Parts catalog. Symbol numbers also given in the list for these screws are referred to in the disassembling instructions in the following page s.

below.

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For cleaning, see page 5-7.

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In order to remove the drum unit, the toner con-tainer, developer un it, and the paper feed unit must be removed beforehand.

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Use the reverse of removal procedures when replacing the component back in the printer. Observe whatever note provided to give critical handlings.

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Open the top cover. The toner container must be removed first: Pull the toner con-tainer release lever as below. Pull the toner container slowly up. To avoid toner ad-hering from spilling, keep it as level as possible.

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After removing the toner container, remove the developer’s connector from the printer. Then, while pressing the dev eloper release lever towards the fr ont of t he printer , r emove t he deve loper unit.

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If the developer unit is shipped (the developer must be shipped separately if the printer is shipped), it must be fit in the shipping container supplied originally wi th the printer.

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First, flap the magnet roller protective cover down. Put the d evelop er un it in the plastic bag supplied with the shipping container. Put the dev e loper unit into the shipping container.

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Use a developer unit DV-25 for replacement. Produce the developer unit from the protective bag.

Flap the magnet roller protective cover up.

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Install the developer using the reverse mann er of remov ing the dev eloper expl ained above. Connect the developer connector.

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The paper feed unit can be removed from the printer without using tools. First, be sure to remove the paper cassette entirely out. Otherwise, the paper feed unit will not come out.

To remove the paper feed unit, first remove the paper cassette out. While holding and pushing the locking tabs at both sides of the paper feed unit, draw the pap e r feed unit all the way out.

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1. The protective cover is not provided with the developer unit that is originally supplied with the printer.

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Before removing the transfer roller, remove the paper feed unit out of the printer.

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Remove the transfer roller cover. Facing front the paper feed unit, move it to left. The transfer roller is held in place by two axle holders that hold the roller axle at both ends.

Hold and pull the gear at the right end of the roller up, then remove the left end.

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To clean the transfer roller, hold it by its gear so that the roller hangs down horizon-tally. Use a vacuum cleaner, moving nozzle along the roller, but do not let the nozzle directly touch on the roller. Thoroughly clean the entire surface of the roller.

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Carefully clean the left side (facing the front of the paper feed unit) axle end before replacing the transfer roller. This end of the axle is directly applied with the high voltage transfer bias.

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Before removing the registration rollers, remove the paper feed unit out of the printer. To remove the paper feed unit, see page 5-6,

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Remove the registration rollers cover. The cover is locked by two catches that lock it onto the paper feed unit. These catches can be accessed through the holes on the cover. Insert a screw driver as shown below and release the locks.

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