Mita-Kyocera FS175375 General Instructions
Chapter Five DISASSEMBLY
Chapter Five
General Instructions 5-3
Screws/hardware 5-3
Disassembly road map 5-4
Disassembly 5-6
Removing the developer unit 5-6
Shipping the developer unit 5-8
Installing a new developer 5-9
Removing the paper feed unit 5-10
Removing the multi-purpose tray 5-10
Removing the transfer roller 5-12
Removing the registration rollers 5-13
Removing the drum unit 5-15
Replacing the drum unit 5-16
Main charger unit 5-17
Top side cover 5-18
Removing covers 5-19
Removing the front panel 5-20
Removing the drive gears assembly 5-20
Removing the fuser unit 5-21
Removing the heater lamp 5-22
Replacing the fuser rollers 5-23
Removing the themostat and thermal cutoff 5-25
Replacing the heat roller 5-26
Removing the laser scanner 5-27
Removing the controller box 5-28
Removing the engine board 5-29
CONTENTS
General Instructions
This chapter provides procedures for removal and replacement of field replacement components. For
other components not shown in this chapter, the diagrams i n the Parts Catalog attached with this
manual will help locate the component.
Disassembly
General Instructions
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 unplugged from
the printer. See
Warning - To avoid injury to human bodies, make sure that AC power is removed and the power cord is unplugged from both the power line and the
printer.
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.
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.
Warning
below.
5-3
FS-1750/FS-3750 Series
Disassembly road map
The diagram on page 5-5 is intended to give an idea on what order to be followed to reach the
component. For example, in order to remove the drum unit, the toner container, developer unit,
and the paper feed unit must be removed beforehand.
Disassembly
Disassembly road map
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.
5-4
FS-1750/FS-3750 Series
Disassembly
Disassembly road map
DISASSEMBLY ROAD MAP
Main
board
29
Engine
board
30
Start
6
Developer
unit
15
Drum
unit
18
Top side
cover
19
Left side
door
19
Right side
cover
Numbers refer to the appropriate page in this chapter.
10
Paper feed
unit
10
Multi-
17
Main
charger unit
27
Laser
scanner
20
Drive gears
assembly
purpose tray
12
Transfer
roller
Relay
board
For cleaning, see
page 5-13.
13
Regist.
roller
20
Front panel
21
Fuser unit
Hi-voltage
unit
28
Controller
box
5-5
Sensor
board
29
Connect boards,
power supply
FS-1750/FS-3750 Series
Disassembly
Removing the developer unit
Open the top cover. The toner container ➊ must be removed first : Pul l t he toner cont ainer rel eas e
lever ➋ as below. Pull the toner container slowly up. To avoid toner adhering from spilling, keep it as
level as possible.
Disassembly
Disassembly road map
➊
➋
5-6
FS-1750/FS-3750 Series
Disassembly
Disassembly road map
➌
After removing the toner container, remove the developer’s connector ➌
while pressing the developer release lever ➍ towards the front of the printer, remove the developer unit.
from the printer. Then,
➍
Note.
After removing the developer, seal it in the protective bag and place it on a flat surface. 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
do not touch the developing roller of the developer. Do not place floppy disks near the developer.
Shipping the developer unit
5-7
on page 5-8. Also
FS-1750/FS-3750 Series
Disassembly
Disassembly road map
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 ➊ supplied originally with th e printer.
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.
Œ
5-8
FS-1750/FS-3750 Series
Disassembly
Disassembly road map
Installing a new developer
Use the following developer kit for replacement. This kit is commonly used with all models.
Kit
Developer unit DV-20
Produce the developer unit from the protective bag.
➊
Flap the magnet roller protective cover ➊ up.
Install the developer using the reverse manner of removing the developer explained above. Con-
nect the developer connector.
5-9
FS-1750/FS-3750 Series
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