KONICA 7020 DISASSEMBLY/ASSEMBLY
3
DISASSEMBLY/ASSEMBLY
1 OUTLINE
2 UNIT EXPLANATION
3 DIS./ASSEMBLY
2
1 OUTLINE2 UNIT EXPLANATION3 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
EXTERNAL SECTION
[1] Replacing the ozone filter
Caution: Be sure that the power cord has
been unplugged from the outlet.
a. Procedure
(1) Remove the five set screws, and remove the read
right cover.
Set screws
Read right
cover
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2 UNIT EXPLANATION
3 DIS./ASSEMBLY
(2) Remove the ozone filter.
Ozone filter
(3) Reinstall the above parts following the removal
steps in reverse.
3-A-1
DRIVE SECTION
DRIVE SECTION
[1]
Removing and Reinstalling the motor
units (main, paper feed, developing)
Caution: Be sure that the power cord has
been unplugged from the outlet.
Caution: Be sure to remove the drum unit
from the main body before removing
or reinstalling the main motor unit. 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 developing unit and drum unit from the
main body.
(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
(4) Remove the 2 set screws holding the left and right
rear covers in place (2 screws each), and remove
the covers.
(5) Remove the 3 set screws, and remove the wire-
bundle guide plate.
Board cover A
Wire bundle
guide plate
Rear right cover
Rear left cover
Board cover D
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2 UNIT EXPLANATION
3 DIS./ASSEMBLY
Cord cover B
Set screws
Cord cover A
(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
Wire bundle
guide plate
Rear right cover
Rear left cover
Board cover D
3-B-1
2
DRIVE SECTION
(8) Remove the various wiring connectors from the
1 OUTLINE2 UNIT EXPLANATION3 DIS./ASSEMBLY
overall control board.
Overall control board
unit
[2] Replacing the registration clutch
Caution: Be sure that the power cord has
been unplugged from the outlet.
Caution: Be sure to remove the drum unit
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
rotating plate.
(9) Remove the 12 set screws, and remove the overall
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
Connectors
(12) Reinstall in the opposite sequence to removal.
Caution: Be careful to avoid damaging the cable
ribbon connected to the overall control
board.
Drum rotating
plate
Set screws
3-B-2
DRIVE SECTION
(3) Remove the clutch connector.
(4) Remove the E-ring. Pull the registration clutch
toward you and rotate it to remove.
Registration
clutch
E-ring
(5) Reinstall in the opposite sequence to removal.
Turn-prevention groove
[3] Replacing the loop clutch
Caution: Be sure that the power cord has
been unplugged from the outlet.
a. Procedure
(1) Remove the rear panel and the system control
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
remove the rotation prevention screws on the
clutch.
Conveyance
drive panel
Set screw
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2 UNIT EXPLANATION
3 DIS./ASSEMBLY
Registration clutch
Caution: When installing the registration clutch, be
sure that the clutch's turn-prevention
groove is installed correctly.
E-rings
Bearings
(4) Remove the E-ring and gear, then remove the gear
at the front, and then remove the clutch.
Loop clutch
Gears
E-ring
(5) Reinstall in the opposite sequence to removal.
3-B-3
READ SECTION
READ SECTION
[1] Screws that must not be removed
Caution: The paint-locked screws must not
be removed. Be sure that you do not
remove these screws.
Screws that must not be removed
Screws that must not be
Screws that
must not be
removed
Screws that must not be removed
removed
[2] Removing the original glass
Caution: The white color reference plate on
the rear of the original glass must be
kept clean. If dirt gets on the board,
clean the board using a clean cloth.
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.
Original glass
Glass holding plate
Set screws
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2 UNIT EXPLANATION
3 DIS./ASSEMBLY
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
2
READ SECTION
1 OUTLINE2 UNIT EXPLANATION3 DIS./ASSEMBLY
[3] Removing and Reinstalling the
CCD unit
Caution: Be sure that the power cord has
been unplugged from the outlet.
(5) Remove the cable ribbon from the CCD unit board.
(6) Remove the 2 set screws, and remove the CCD
unit.
Caution: Be sure to perform image adjustment
after installing the CCD unit. (Refer
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
ribbon cover.
Photosensors
Lens shield cover
Cable ribbon
cover
Set screws
(7) Reinstall in the opposite sequence to removal.
Caution: Be careful to avoid damage to the cable
ribbon when removing it. When reinstalling
it, be sure that it is securely in place.
CCD unit
board
Cable ribbon
3-C-2
READ SECTION
[4] Replacing the exposure lamp
Caution: Be sure that the power cord has
been unplugged from the outlet.
Do not touch the exposure lamp's
lamp area with bare hands.
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.
(3) Read left cover
(6) Read
front cover
(2) Original glass
(4) Read
rear
cover
(4) Shift the exposure unit to the cutout location at the
center of the main body frame.
(5) Remove the 2 set screws (through the holes in the
frame), and remove the auxiliary reflecting mirror.
Auxiliary
reflecting mirrorSet screws
(6) Remove the 1 connector and 2 set screws. Tilt and
remove the exposure lamp.
Set screws
Exposure lamp
Connector
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2 UNIT EXPLANATION
3 DIS./ASSEMBLY
(5) Operation panel
* Remove above parts in
order of numbers.
(1) Read right cover
Cutout
Exposure unit
(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
2
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[5] Removing and Reinstalling the
exposure unit
Caution: Be sure that the power cord has
been unplugged from the outlet.
Caution: Be sure to the use optics positioning jig
when reinstalling the exposure unit.
Be sure to clean the original glass before
reinstalling it (to prevent degradation of
image quality).
a. Removal procedure
(1) Remove the read right cover and the original glass.
(2) Remove the operation panel, read left cover, and
read rear cover.
(3) Remove the 2 set screws, and remove the read
front cover.
(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.
b. Installation procedure
(1) Fit the exposure unit into the main body.
(2) Insert the front exposure unit mount fitting and rear
exposure unit mount fitting into the corresponding
slits in the exposure unit.
(3) Shift the V mirror unit to the exit side. Through the
front, insert the two optics positioning jigs so that
they are at the installation location for the exposure
unit. Pass the jig through the V mirror unit to fasten
it in place.
Position the exposure unit by pushing it against the
frame on the right side of the unit.
Remove cable clamp.
Exposure unit
V mirror unit
Set screws
Exposure unit
Exposure unit
mount fittings
(6) Tilt and slide the exposure unit to remove it from
the frame.
(7) Disconnect the exposure lamp connector.
Optics
positioning
jigs
(4) Fasten the front and rear exposure unit mount
fittings into place (1 screw in each fitting).
(5) Remove the optics positioning jigs.
(6) Finish installation by reversing the sequence of the
removal procedure.
Exposure unit mount
fitting (front)
Exposure unit mount
fitting (rear)
3-C-4
READ SECTION
[6] Removing and Reinstalling the
optics drive motor
a. Procedure
(1) Remove the original glass.
(2) Remove the 3 set screws, and remove the optical
motor.
Set screws
Optical motor
Belt
[7] Removing the optics wire
Caution: When removing or reinstalling optics
wires, be sure to the use optics positioning
jig.
Be sure to perform image adjustment after
replacing or reinstalling the wire. (For
details, refer to “Adjustment section”.)
a. Procedure
(1) Unfasten and remove all externals from the read
unit.
(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.
(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
remove the bearings.
(6) Remove the front and rear optics wires from the
drive pulleys.
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2 UNIT EXPLANATION
3 DIS./ASSEMBLY
(3) When reinstalling, apply light tension to the belt
while fastening the motor into place.
V mirror
unit
Optics unit
Bearing
Optics wire (front)
Bearing
Optics wire (rear)
Drive
pulleys
Springs
3-C-5
READ SECTION
2
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[8] Installing the optics wire
Caution 1: When winding wire around pulleys, be
sure that the winds are close. Be
careful to avoid overlap.
Caution 2: When changing the wire, be sure to
use the optics positioning jigs.
Caution 3: Be sure to perform image adjustment after
installing the CCD unit. (Refer to the
“Adjustment” section.)
a. Procedure
(1) Fit the metal ball (midway along each optics wire)
into the mount opening on the drive pulley. Starting
from this position, wind 6 times around the outside
and 5 times around the inside.
• After winding the wires, fasten them in place (with
tape, etc.) so that they cannot come off.
• Use the "F" exposure unit mount fitting (the fitting
with the "F" printed on it) at the front, and use the
"R" fitting at the rear.
• The end with the metal ball at the tip winds around
the inside of the pulley shaft.
• Wind so that the two ends of the wire come off the
top of the pulley.
(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
mirror unit. Hook the end of the wire onto the cutout
on the frame.
(3) On the round-end side, pass the wire so that it
passes through the right side pulley, passes over
the pulley on the outside of the V mirror unit, and
passes under the V mirror unit. Fasten the end to
the right side frame with a the spring.
(4) Fasten the drive pulley bearings into place with the
attachment screws (2 screws each).
(5) Using the optics positioning jigs to install the
exposure unit.
(6) Remove the jigs.
(7) Slide the exposure unit two or three times to make
sure that it works correctly.
Pulley
Metal ball
V mirror unit
To metal
ball
Tape
(Rear)
5 winds
6 winds
6 winds 5 winds
Front
Rear
(Front)
Tape
Drive
pulleys
To metal
ball
Exposure
Pulley
V mirror unit
Optics positioning jigs
unit
Remove cable clamp.
3-C-6
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