Service Manuals, User Guides, Schematic Diagrams or docs for : Konica Minolta Copiers 7020 SERVICE 7020030E
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3
DISASSEMBLY/ASSEMBLY
3 DIS./ASSEMBLY 2 UNIT EXPLANATION 1 OUTLINE
1 OUTLINE
2
2 UNIT EXPLANATION
3 DIS./ASSEMBLY
This section explains how to disassemble and reassemble the machine.
When disassembling and reassembling the machine, follow the
precautions given below.
1. Be sure the power cord has been unplugged from the wall outlet.
2. The disassembled parts must be reassembled following the
disassembly procedure in reverse unless otherwise specified.
3. Care should be taken not to lose small parts. Care should also be
taken not to install small parts in wrong places.
4. Do not operate the machine before installing all the disassembled
parts completely.
5. Removal of some screws is prohibited in this section. Never loosen
them.
EXTERNAL SECTION
1 OUTLINE
EXTERNAL SECTION
[1] Replacing the ozone filter
Caution: Be sure that the power cord has
been unplugged from the outlet.
a. Procedure
2 UNIT EXPLANATION
(1) Remove the five set screws, and remove the read
right cover.
Set screws
3 DIS./ASSEMBLY
Read right
cover
(2) Remove the ozone filter.
Ozone filter
(3) Reinstall the above parts following the removal
steps in reverse.
3-A-1
DRIVE SECTION
1 OUTLINE
DRIVE SECTION
[1] Removing and Reinstalling the motor (4) Remove the 2 set screws holding the left and right
rear covers in place (2 screws each), and remove
units (main, paper feed, developing) the covers.
Caution: Be sure that the power cord has (5) Remove the 3 set screws, and remove the wire-
been unplugged from the outlet. bundle guide plate.
2 UNIT EXPLANATION
Caution: Be sure to remove the drum unit
Board cover A
from the main body before removing
or reinstalling the main motor unit. If Wire bundle Rear left cover
guide plate
the drum unit is in place at this time,
the drum will rotate when you install
or remove the drum rotating plate,
resulting in possible damage to the
cleaning blade.
a. Procedure
(1) Remove the developing unit and drum unit from the
main body.
3 DIS./ASSEMBLY
(2) Remove the 2 set screws, and remove the cord
cover A. Then remove the cord cover B.
(3) Remove the 9 set screws, and remove the rear
cover.
Rear cover Board cover D
Rear right cover
Set screws
(6) Remove the 16 set screws, and remove the board
cover D.
(7) Remove the 13 set screws, and remove the board
cover A.
Board cover A Rear left cover
Wire bundle
guide plate
Cord cover B Cord cover A
Board cover D
Rear right cover
3-B-1
DRIVE SECTION
1 OUTLINE
(8) Remove the various wiring connectors from the [2] Replacing the registration clutch
overall control board.
Caution: Be sure that the power cord has
been unplugged from the outlet.
2 Caution: Be sure to remove the drum unit
2 UNIT EXPLANATION
from the main body before carry out
the following procedure. If the drum
unit is in place at this time, the drum
will rotate when you install or
remove the drum rotating plate,
resulting in possible damage to the
cleaning blade.
a. Procedure
(1) Remove the rear panel and the system control
board unit.
(2) Remove the 3 set screws, and remove the drum
3 DIS./ASSEMBLY
Overall control board rotating plate.
unit
(9) Remove the 12 set screws, and remove the overall Drum rotating
plate
control board unit.
(10) Disconnect the connectors from each motor unit.
(11) Remove the 4 set screws, then remove each motor
unit.
Connector
Set screws
Set screws
Connectors
(12) Reinstall in the opposite sequence to removal.
Caution: Be careful to avoid damaging the cable
ribbon connected to the overall control
board.
3-B-2
DRIVE SECTION
1 OUTLINE
(3) Remove the clutch connector. [3] Replacing the loop clutch
(4) Remove the E-ring. Pull the registration clutch
toward you and rotate it to remove.
Caution: Be sure that the power cord has
been unplugged from the outlet.
2 UNIT EXPLANATION
a. Procedure
Registration
(1) Remove the rear panel and the system control
clutch
board unit.
(2) Remove the wire bundle from the clamp on the
conveyance drive panel.
(3) Remove the 2 E-rings and 3 set screws, and
remove the conveyance drive panel. (Do not
E-ring
remove the rotation prevention screws on the
clutch.
3 DIS./ASSEMBLY
Conveyance
(5) Reinstall in the opposite sequence to removal. drive panel
Set screw
Turn-prevention groove
Bearings
E-rings
(4) Remove the E-ring and gear, then remove the gear
at the front, and then remove the clutch.
Registration clutch
Caution: When installing the registration clutch, be
sure that the clutch's turn-prevention Loop clutch
groove is installed correctly.
Gears
E-ring
(5) Reinstall in the opposite sequence to removal.
3-B-3
READ SECTION
1 OUTLINE
READ SECTION
[1] Screws that must not be removed [2] Removing the original glass
Caution: The paint-locked screws must not Caution: The white color reference plate on
be removed. Be sure that you do not the rear of the original glass must be
remove these screws. kept clean. If dirt gets on the board,
clean the board using a clean cloth.
2 UNIT EXPLANATION
Screws that must not be removed a. Procedure
(1) Remove the platen cover or the RADF.
(2) Remove the 5 set screws, and remove the read
right cover.
(3) Loosen the set screw and slide the glass holding
plate toward the outer exterior.
(4) Raise the original glass and slide it off.
Screws that must not be
removed
Screws that Original glass
Glass holding plate
must not be
3 DIS./ASSEMBLY
removed Set screws
Screws that must not be removed
Read
right cover
Set screws
(5) Reinstall in the opposite sequence to removal.
Caution: Be sure that the original glass is pushed
flush left against the glass holding plate
when fastening into place.
3-C-1
READ SECTION
1 OUTLINE
[3] Removing and Reinstalling the
(5) Remove the cable ribbon from the CCD unit board.
CCD unit
(6) Remove the 2 set screws, and remove the CCD
Caution: Be sure that the power cord has unit.
2 been unplugged from the outlet.
2 UNIT EXPLANATION
Caution: Be sure to perform image adjustment Set screws CCD unit
after installing the CCD unit. (Refer board
to the "Adjustment" section.)
a. Procedure
(1) Remove the original glass.
(2) Remove the 2 set screws, and remove the photo-
sensor.
(3) Remove the 8 set screws, and remove the lens
shield cover.
(4) Remove the 3 set screws, and remove the cable
3 DIS./ASSEMBLY
ribbon cover.
Cable ribbon
Cable ribbon
Photosensors cover
(7) Reinstall in the opposite sequence to removal.
Lens shield cover
Caution: Be careful to avoid damage to the cable
ribbon when removing it. When reinstalling
it, be sure that it is securely in place.
3-C-2
READ SECTION
1 OUTLINE
[4] Replacing the exposure lamp (4) Shift the exposure unit to the cutout location at the
center of the main body frame.
Caution: Be sure that the power cord has (5) Remove the 2 set screws (through the holes in the
been unplugged from the outlet. frame), and remove the auxiliary reflecting mirror.
Do not touch the exposure lamp's
2 UNIT EXPLANATION
Auxiliary
lamp area with bare hands.
Set screws reflecting mirror
Caution: Be sure to clean original glass before
reinstalling it.
a. Procedure
(1) Remove the read right cover and the original glass.
(2) Remove the operation panel, the read left cover,
and the read rear cover.
(3) Remove the 2 set screws, and remove the read
front cover.
(2) Original glass
3 DIS./ASSEMBLY
(3) Read left cover
(6) Remove the 1 connector and 2 set screws. Tilt and
remove the exposure lamp.
(4) Read
rear
cover Set screws
Connector
Exposure lamp
(6) Read
front cover
Cutout
(5) Operation panel
Exposure unit
(1) Read right cover
* Remove above parts in
order of numbers.
(7) Reinstall in the opposite sequence to removal.
Caution: Be careful when reinstalling the original
glass. To install: push the glass against
the left rear of the readout rear exterior,
then hold the readout front cover against
with glass hold plate.
And further, hold the glass plate, while
pressing the cut portion of the read left
cover.
3-C-3
READ SECTION
1 OUTLINE
[5] Removing and Reinstalling the b. Installation procedure
exposure unit (1) Fit the exposure unit into the main body.
(2) Insert the front exposure unit mount fitting and rear
Caution: Be sure that the power cord has
2 been unplugged from the outlet.
exposure unit mount fitting into the corresponding
slits in the exposure unit.
2 UNIT EXPLANATION
Caution: Be sure to the use optics positioning jig (3) Shift the V mirror unit to the exit side. Through the
when reinstalling the exposure unit. front, insert the two optics positioning jigs so that
they are at the installation location for the exposure
Be sure to clean the original glass before
unit. Pass the jig through the V mirror unit to fasten
reinstalling it (to prevent degradation of
it in place.
image quality).
Position the exposure unit by pushing it against the
a. Removal procedure frame on the right side of the unit.
(1) Remove the read right cover and the original glass.
(2) Remove the operation panel, read left cover, and Remove cable clamp.
read rear cover.
(3) Remove the 2 set screws, and remove the read
3 DIS./ASSEMBLY
front cover. Exposure unit
V mirror unit
(4) Shift the exposure unit to the cutout location at the
center of the main body frame.
(5) The exposure unit is fixed in place by set screws
fastened to the front and rear exposure unit mount
fittings (1 screw in each fitting). Remove the 2
screws.
Optics
Set screws Exposure unit mount
Exposure unit positioning
jigs fitting (rear)
Exposure unit mount
fitting (front)
(4) Fasten the front and rear exposure unit mount
fittings into place (1 screw in each fitting).
(5) Remove the optics positioning jigs.
Exposure unit (6) Finish installation by reversing the sequence of the
mount fittings removal procedure.
(6) Tilt and slide the exposure unit to remove it from
the frame.
(7) Disconnect the exposure lamp connector.
3-C-4
READ SECTION
1 OUTLINE
[6] Removing and Reinstalling the [7] Removing the optics wire
optics drive motor Caution: When removing or reinstalling optics
wires, be sure to the use optics positioning
a. Procedure jig.
(1) Remove the original glass.
2 UNIT EXPLANATION
Be sure to perform image adjustment after
(2) Remove the 3 set screws, and remove the optical replacing or reinstalling the wire. (For
motor. details, refer to "Adjustment section".)
a. Procedure
Set screws
(1) Unfasten and remove all externals from the read
unit.
Optical motor
(2) Shift the V mirror unit to the left side. Through the
front, insert the optics positioning jig so that it is at
the V mirror attachment location. Pass the jig
through the V mirror unit to fasten the it in place.
(3) Remove the exposure unit.
3 DIS./ASSEMBLY
(4) Detach the springs from the ends of the front and
rear optics wires (1 spring on each wire), and
remove the wires.
(5) Remove the set screws holding the two drive pulley
bearings in place (two screws on each pulley), and
Belt remove the bearings.
(6) Remove the front and rear optics wires from the
drive pulleys.
(3) When reinstalling, apply light tension to the belt
while fastening the motor into place. Bearing
V mirror Optics unit Optics wire (rear)
unit
Drive
pulleys
Bearing Springs
Optics wire (front)
3-C-5
READ SECTION
1 OUTLINE
[8] Installing the optics wire (2) On the metal ball side, pass the optics wire so that
it passes under the V mirror unit, through the left
side pulley, and through the inside pulley on the V
Caution 1: When winding wire around pulleys, be mirror unit. Hook the end of the wire onto the cutout
2 sure that the winds are close. Be on the frame.
2 UNIT EXPLANATION
careful to avoid overlap. (3) On the round-end side, pass the wire so that it
passes through the right side pulley, passes over
Caution 2: When changing the wire, be sure to
the pulley on the outside of the V mirror unit, and
use the optics positioning jigs.
passes under the V mirror unit. Fasten the end to
Caution 3: Be sure to perform image adjustment after the right side frame with a the spring.
installing the CCD unit. (Refer to the (4) Fasten the drive pulley bearings into place with the
"Adjustment" section.) attachment screws (2 screws each).
a. Procedure (5) Using the optics positioning jigs to install the
exposure unit.
(1) Fit the metal ball (midway along each optics wire)
into the mount opening on the drive pulley. Starting (6) Remove the jigs.
from this position, wind 6 times around the outside (7) Slide the exposure unit two or three times to make
3 DIS./ASSEMBLY
and 5 times around the inside. sure that it works correctly.
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