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Chapter Five DISASSEMBLY
Five
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Chapter Five DISASSEMBLY
General Instructions 5-3
Screws/hardware 5-3
Before starting disassembly 5-4
Disassembly 5-5
Developer unit 5-5
Removing the paper feed unit 5-8
Removing the transfer roller unit 5-9
Removing the drum unit 5-11
Main charger unit 5-13
Removing the controller cover 5-14
Removing the controller box 5-16
Right side cover/Feeder unit 5-18
Removing the face-down unit 5-20
Removing the manual feed roller/Separator 5-22
Drive gears assembly 5-23
Removing the fuser unit 5-25
Removing the laser scanner 5-30
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General Instructions
This chapter provides procedures for removal and repl acement of fiel d repla cement
components. For other components not sh own in t his chapt er, t he dia grams in t he 3DUWV
&DWDORJ attached with this manual will help locate the component.
For replacement of a component, use the reverse of the removal procedures explained in
this chapter.
Disassembly
General Instructions
Before proceeding, make sure printer power is switched off and the power cord is unplugged from the printer. See
Warning
moved and the power cord is unplugge d fro m both the po we r line an d the
printer.
Screws/hardware
Screws and hardware used in the printer are listed in the beginning section of the
3DUWV#FDWDORJ. Symbol numbers also given in the list for thes e s crews are referred t o in
the disassembling instructions in the following pages.
Caution
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.
——To avoid injury to human bo die s, ma ke sur e t h at AC po we r is r e -
——To secure a self-tapping screws, align it with the thread carefully.
Warning
below.
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Before starting disassembly
Disassembly
Before starting disassembly
Warning
the power supply.
Warning
moved.
Caution
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.
——Before proceeding, unplug the power cord from the printer and
——Never attempt to operate the printer with a component re-
——The printer uses electrostatic-sensitive parts inside (on boards,
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Disassembly
Developer unit
First, the toner container must be removed.
Disassembly
Disassembly
Open the top cover. The toner container ➊ must be removed first: P ull the t oner container release lever ➋ as below. Pull the toner container ⊂
as possible.
#slowly up, keeping it as level
o
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Disassembly
Disassembly
Open the front cover. Locate the developer unit release lever ➊ and turn it clockwise to
the upper position. Grasp the developer’s front end as shown below and slowly draw
the developer ⊄ out from the printer.
➊
Note
——After removing the developer, sea l it in the protective bag and place
it on a flat surface. Do not place the developer in a dusty area.
Note
——Do not place floppy disks near the developer.
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Disassembly
Disassembly
REPLACING THE DEVELOPER UNIT
To replace the developer unit into the printer, be sure to align the guides and rails on
the drum unit with each other. Do not force to slide the drum unit in unless they are
properly aligned with each other.
When the developer unit has b een fully seated, remove the protective cover.
Caution
damaging the developer unit connector and an uneven toner distribution
inside the developer unit which may result in a printing problem.
——Do not rush the developer unit into the printer. It may cause
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Disassembly
Removing the paper feed unit
The paper feed unit can be removed from the printer without using a tool.
Note
—If duplexer DU-30 is installed in the printer, uni ns tal l i t b efore
proceeding.
Disassembly
While holding and pushing the locking tab n at the left side of the paper feed unit,
draw the paper feed unit all the way out.
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Disassembly
Disassembly
Removing the transfer roller unit
Before removing the transfer roller unit, remove the paper feed unit out of the
printer. Then, the transfer roller comes out without needing a tool.
Caution——
(particles of paper, etc.) on the transfer roller can significantly d eteriorate
the print quality (white spots, etc.).
The transfer roller unit n is held in place by two joints at both ends. To remove the
transfer roller unit: Hold the tab at both left and left sides of the transfer roller unit
first. When removing, tilt the transfer roller unit upward so that the joints are aligned
to free the transfer roller unit.
Do not touch the transfer roller (sponge) surface. Oil and dust
Œ
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Disassembly
Disassembly
INSTALLING THE TRANSFER ROLLER UNIT
To install the (new) transfer roller unit, align the mounting holes n of the transfer
roller unit with the joints o of the paper feed unit.
n
o
CLEANING THE TRANSFER ROLLER UNIT
To clean the transfer roller, remove the transfer roller unit out from the feed unit as
shown on page 5-9. Use a vacuum cleaner, moving nozzle along the roller, but do not
let the nozzle directly touch on the roller, while rotating the transfer roller by the gear.
Thoroughly clean the entire surface of the roller.
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Removing the drum unit
Disassembly
Disassembly
Caution
tive cover supplied with the new drum kit package. Do not forcibly attempt
to remove the drum without following the procedures provided below, using
the drum protective cover.
Caution—
light source. Seal it in a protective bag. Avoid bump the drum s urface onto
hard objects.
To remove the drum unit ➊, first insert the drum unit protective cover ➋ as shown
below. This unlatches the drum unit for removal. Be sure to install the protective cover
firmly in.
——Removing or reinstalling the drum unit requires the drum protec-
Store the drum unit in a clear, clean place, not exposed to a strong
➊
➋
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Disassembly
Disassembly
While pressing the drum release lever ⊂ at the left side of the printer, as shown below,
pull the drum unit all the way out. It should come off with the protective cover. When
the drum unit is halfway out, hold the handle at the top of the drum unit.
⊂
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Disassembly
Disassembly
Main charger unit
Pull the main charger ➊ until it stops. While pushing the (white) locking button ➋ the
printer, pull the main charger unit all the way out.
➊
➋
The main charger unit is technically explained in chapter 4, 2SHUDWLRQ.
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Removing the controller cover
Remove the controller cover by removing the screws ➊ below.
Disassembly
Disassembly
Disconnect the two connectors o on CONN1 board at the back.
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Open the front cover and remove the screws p below.
Disassembly
Disassembly
Remove the screws q and r. All these are self-t a pping s crews of the s a me type. T hen,
remove the top cover.
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Removing the controller box
Remove the middle bracket by removing four screws n.
Disassembly
Disassembly
Remove the connectors o.
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Remove two screws p to remove the controller box.
Disassembly
Disassembly
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Right side cover/Feeder unit
Remove four screws, ➊ and ➋, and remove the right side cover.
Disassembly
Disassembly
Remove three screws p.
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Remove the screw q at the front side.
Disassembly
Disassembly
Remove the controller box (Refer to
tion.), then remove the screw r below to remove the ground wire (black) s of the feeder assembly.
After removing the above screw, set the drum unit release lever to the left (down)
position. Then, carefully remove the feeder assembly.
Removing the controller box
, the previous sec-
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Removing the face-down unit
Remove the face-up tray by pulling the left and right arms of the tray while pus hing in
the locking tab n for each arm.
Remove six screws o and remove the left cover.
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Disassembly
Disassembly
Remove the screw p on the front side (below). Then, remove the one on the rear side.
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Removing the manual feed roller/Separator
While pressing the locking tab n in, remove the manual feed roller.
Disassembly
Disassembly
n
To remove the separator o, use a small flat blade screwdriver in the manner shown
below.
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Disassembly
Disassembly
Drive gears assembly
Begin removing the driver gear assembly by first removing the sub gears assembly C.
This assembly mounts gears for driving the toner container and the waste toner conveyer. To remove this assembly, remove two screws ⊇.
Sub gears
assembly C
Then, remove the waste toner conveyer housing. To remove this part, remove three
screws ⊄. The right side cover must be removed first. Remove five s crews. Detach two
connectors. Then remove the drive ass embly from t he print er.
Waste toner
conveyer
housing
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Disassembly
To remove the main motor assembly, remove all screws indicated as ⊂ below.
Main motor
Disassembly
To remove the drive gears assembly, remove three screws ⊆ as shown below.
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Disassembly
Disassembly
Removing the fuser unit
The fuser unit can be detached from the feed unit wit hout needing a tool . T o remove the
fuser unit, first, open the feed unit . T o open the feed uni t, rai se a nd hold t he (green)
handle and pull the feed unit frontwards gently.
Warning—³
down.
³
³³
The fuser is hot after the printer was running. Wait until it cools
Fuser unit
Feed unit
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Disassembly
Disassembly
To remove the fuser unit, unlatch the fuser unit from the feed unit. This is done by releasing the latch at both sides of the fuser unit in the manner shown below.
Fuser unit
Latches:
arrowed direction to
release the fuser unit.
Move to the
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Disassembly
Disassembly
Then, hold the fuser unit using both hands and lift gently. Remove as shown below.
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Disassembly
Disassembly
REMOVING HEATER LAMPS
The fuser unit includes two heater lamps which are different in function and shape
(length). To gain access to the heater lamps in the fuser, first, remove the cover (on the
connector side) as shown below, by removing two screws ⊇.
Fuser unit
Remove the screw ⊄ shown below and remove the terminal.
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Remove the appropriate screw ⊂ to remove the lamp.
Disassembly
Disassembly
Warning——The heater is extremely hot immediately after the printer was running. Allow substantial period of time until it cools down. Also, the heater is
fragile: Handle it with great care.
Caution
to drop or brea k.
Caution
heater’s outer surface can prevent proper fusing of toner on paper.
——The heater lamps are fragile. Use extreme care when handling not
——Do not directly touch on the heater lamp. Finger prints on the
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Disassembly
Disassembly
Removing the laser scanner
To remove the laser scanner, the top cover and the face-down unit must be removed
first. For details, see page 5-16.
Warning
(laser diode, etc.). Before touching the laser scanner, provide an antistatic
(discharging) device, such as a wrist strap, that can effectively discharge your
body.
To remove the laser scanner, remove screws ➊ and ➋. Detach connectors as needed.
After removing the scanner, handle it carefully.
——The laser scanner contains electrostatic-sensitive parts inside
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