Mita-Kyocera FS6700 Service Manual 05
Chapter 5 DISASSEMBLY
Contents
General Instructions, page 5-2
Screws/hardware, page 5-2
Disassembly: Main unit printer, page 5-3
Removing the developer unit, page 5-3
Shipping the developer unit, page 5-4
Installing a new developer, page 5-4
Removing the paper feed unit, page 5-5
Removing the transfer roller, page 5-6
Cleaning the transfer roller, page 5-6
Rreplacing the transfer roller, page 5-6
Removing the registration rollers, page 5-7
Removing the drum unit, page 5-8
Replacing the drum unit, page 5-9
Main charger unit, page 5-9
Top side cover, page 5-10
Removing covers, page 5-10
Removing front cover, page 5-11
Removing the main motor, page 5-12
Removing the drive assembly, page 5-12
Removing the fuser unit, page 5-13
Removing the heater lamp, page 5-13
Installing the fuser roller, page 5-14
Removing the thermistor and thermal cutout, page 5-15
Replacing the heat roller, page 5-16
Removing the controller box, page 5-16
Removing the face-down pulley assembly, page 5-19
Disassembly: Option paper feeder, page 5-20
Removing the feed roller, page 5-20
Removing the top cover, page 5-20
Removing the motor assembly, page 5-21
5.1 General Instructions
This chapter provides procedures for removal and replacement of field replacement
components. For other components not shown in this chapter, the diagrams in the
Parts Catalog
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
Warning To avoid injury to human bodies, make sure that AC power is removed
Screws/hardware
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 pages.
attached with this manual will help locate the component.
Warning
and the power cord is unplugged from both the power line and the
printer.
Disassembly
General Instructions
below.
Caution To secure a self-tapping screws, align it with the thread carefully. First
turn it counterclockwise, then slowly clockwise. Do not over-tighten.
In case the selftapped thread is damaged, the affected part must be
replaced with a new part.
5-2
FS-6700
Disassembly
Disassembly: Main unit printer
5.2 Disassembly: Main unit printer
In order to remove the drum unit, the toner con-tainer, developer unit, and the
paper feed unit must be removed beforehand.
Note In most cases, the toner container and the developer unit must be
removed in the beginning.
Use the reverse of removal procedures when replacing the component back in the
printer. Observe whatever note provided to give critical handlings.
Warning Before proceeding, unplug the power cord from the printer and the
power supply.
Warning Never attempt to operate the printer with a component removed.
Caution The printer uses electrostatic-sensitive parts inside (on boards, laser
scanner, etc.). Provide an antistatic (discharging) device, such as a
wrist strap, that can effectively discharge your body before touching
boards, laser scanner, etc.
Removing the developer unit
Open the top cover. The toner container must be removed first: Pull the toner container release lever as below. Pull the toner container slowly up. To avoid toner adhering from spilling, keep it as level as possible.
Toner container
Release lever
After removing the toner container, remove the developer’s connector from the
printer. Then, while pressing the developer release lever towards the front of the
printer, remove the developer unit.
FS-6700
5-3
Disassembly
Disassembly: Main unit printer
Note After removing the developer, seal it in the protective bag and place it
on a flat sur-face. Do not place the developer in a dusty area. If you
ship the developer, pack it in the shipping container specifically supplied with the printer. See Shipping the de-veloper unit on page 5-8.
Also do not touch the developing roller of the developer. Do not place
floppy disks near the developer.
Shipping the developer unit
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 with
the printer.
Shipping
container
First, flap the magnet roller protective cover down. Put the developer unit in the
plastic bag supplied with the shipping container. Put the developer unit into the
shipping container.
Installing a new developer
Use a developer unit DV-25 for replacement. Produce the developer unit from the
protective bag.
5-4
FS-6700
Disassembly
Disassembly: Main unit printer
Flap the magnet roller protective cover up.
1
Protective
cover
Install the developer using the reverse manner of removing the developer
explained above. Connect the developer connector.
Removing the paper feed unit
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 paper
feed unit all the way out.
Locking tab
1. The protective cover is not provided with the developer unit that is originally supplied with the printer.
FS-6700
5-5
Disassembly
Disassembly: Main unit printer
Removing the transfer roller
Before removing the transfer roller, remove the paper feed unit out of the printer.
Caution Do not touch the transfer roller (sponge) surface. Oil and dust (parti-
cles of paper, etc.) on the transfer roller can significantly deteriorate
the print quality (white spots, etc.).
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.
Transfer roller cover
Transfer
roller
Cleaning the transfer roller
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.
Rreplacing the transfer roller
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.
5-6
FS-6700
Disassembly
Disassembly: Main unit printer
Removing the registration rollers
Before removing the registration rollers, remove the paper feed unit out of the
printer. To remove the paper feed unit, see page 5-5,
.
unit
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.
Removing the paper feed
FS-6700
5-7
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