Minolta 1052 Disassem Adj

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Page 1

EPlO52

DE/REASSEMBLY,

ADJUSTMENT

MINOLTA

Page 2

1158SBDOOOSA +

For the Utmost safety

For replacement parts, use the genuine parts with their part numbers specified in the parts manual. Use

of a wrong part could cause an overload or dielectric breakdown, resulting in an electric shock or fire.

Replace a blown fuse or thermal fuse with the corresponding genuine part with its part number specified in the parts manual. Use of a fuse with a different rating or one with the same rating but of a different type can result in a fire. Especially when a thermal fuse blows frequently, the thermal control system Be sure to take necessary action.

Before attempting to disassemble the machine, be sure to unplug its power cord. The machine contains a high voltage unit and a circuit with a large current capacity that may cause an electric shock or burn from sparking. The machine also contains quick moving parts, which could injure a person.

If the machine uses a laser, a person can lose his/her eyesight by a laser beam leak.

Wherever feasible, keep the covers and parts mounted when energizing the machine.

If it is absolutely necessary to energize the machine with its cover removed, do not touch an exposed part that is being charged and use care not to allow your clothing to be caught by a timing belt, gear, or other moving part.

Do not leave the machine unattended while it is being energized.

Warning

probably faulty.

! Caution

To actuate an interlock switch with

ating jig. Use of folded paper can damage the interlock switch mechanism.

cover

removed or opened, be sure to use the interlock switch actu-

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! Caution

A high voltage is being applied to the part marked with the symbol shown on the right. Touching it can cause an electric shock, Be sure to unplug the power cord when servicing this part or other parts near it.

When the machine is energized with any of its covers removed, never use a flammable spray near it, as a fire can result.

Make sure that correct screws (diameter and length of the screw, binding/tapping screws) are used in the correct places when assembling parts. If a wrong screw is used, a short insulating distance could result. It could also result in collapsed threads, which provides only a poor grounding connection, resulting in an electric shock.

A toothed washer and spring washer, if used originally, must be reinstalled. If they are left out, a contact failure results, causing an electric shock or fire.

Replace a lithium cell only with one having the part number specified in the parts manual. An explosion could result if the cell is installed with wrong polarity or a wrong cell is installed. Dispose of a used lithium cell according to the applicable local regulations. Never throw it away or abandon it on the users premises.

Other Precautions

While the machine is being energized, do not unplug or plug in a connector on a PWB or relay harness.

Since the Magnet Roller of the Imaging Unit generates a strong

floppy disk, or magnetic card near it.

Use of an air gun parts to break down. Be sure therefore to use a blower brush or cloth to clean these parts. If a unit is to be cleaned, be sure to remove the sensors in advance.

MQS ICs

tions given in l-2. INSTRUCTIONS FOR HANDLING THE

The PC Drum is highly delicate. When handling the PC Drum, follow the precautions given in 1-3. HANDLING OF THE PC DRUM.

To reassemble, reverse the order of disassembly unless otherwise specified.

Note that replacement of a PWB may call for readjustments or resetting of particular items.

or vacuum

are susceptible to static electricity. When handling a PWB loaded with MOS

magnetic

force,

do not bring a CRT, watch,

generates static electricity which can cause the ATDC Sensor and associated

ICs,

follow precau-

PWBs

WITH MQS

ICs.

CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES ACCORDING TO THE MANUFACTURERS INSTRUCTIONS.

Eksplosionsfare ved fejlagtig handtering. Udskiftning ma kun ske med

batteri

samme

fabrikat og type. Lever det brugle bafferi tilbage til leverandoren.

Page 4

1 SERVICE INSTRUCTIONS

l-l. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS 1-2. INSTRUCTIONS FOR HANDLING THE

WITH

MOSICs

.........................................

1-3. HANDLING OF THE PC DRUM

1-4.

PARTS WHICH MUST NOT BE TOUCHED

PWBs

..........................

................

2 1 DISASSEMBLY/REASSEMBLY

2-1.

DOORS, COVERS, AND EXTERIOR PARTS:

IDENTIFICATION AND REMOVAL PROCEDURES 2-2. REMOVAL OF 2-3. BELT INSTALLATIONS 2-4. PAPER TAKE-UP/TRANSPORT SECTIONS

(1)

Removal of the Paper Take-Up Unit (2) Removal of the Paper Take-Up Rolls (3) Cleaning of the Paper Take-Up Rolls (4) Removal of the Suction Unit (5) Disassembly of the Suction Unit

PWBs

...................................

..................................

...............

.....................

....................

...........................

........................

(6) Disassembly of the Multi Bypass Table (Option)

2-5. OPTICAL SECTION

(1) Removal of the Lens Drive Cable (2) Winding of the Lens Drive Cable (3) Removal of the Scanner Drive Cable (4) Winding of the Scanner Drive Cable (5) Removal of the Scanner (6) Cleaning of the Exposure Lamp (7) Cleaning of the Ist/2nd/3rd Mirrors (8) Cleaning of the Lens and 4th Mirror

....................................

.......................

....................

...............................

........................

.....................

(9) Cleaning of the Optical Section Cooling Fan Filter

2-6. IMAGINGUNIT

.........................................

(1) Disassembly, Cleaning, Replacement and Starter

changing of the Imaging Unit

Replacement of the PC Drum

Replacement of the Toner Scattering Prevention

Plate

.............................................

Replacement of the Cleaning Blade

Cleaning of the PC Drum Paper Separator Fingers

Cleaning of the Ds Positioning Collars

Cleaning of the Paper Dust Remover

...........................

........................

...................

.................

..................

......

.........

..........

........

......

D-l D-2

D-2 D-4

D-5 D-8

D-10

D-i 1 D-i

D-12 D-l 2 D-12 D-i 2 D-13 D-18

D-18 D-19 D-20 D-22 D-24 D-24 D-25 D-25 D-25 D-26

D-26 D-26

D-26 D-27 D-28 D-28 D-28

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Replacement of the Toner Antispill Mylar

Cleaning of the Upper Pre-Image Transfer

GuidePlate

Cleaning of the Magnet Roller Lower Filter (2) Cleaning of the Main Erase Lamp (3) Cleaning of the Edge Erase Lamp

CONTENTS

........................................

......................

...............

.............

D-28 D-29

D-29 D-30 D-30

2-7. PC DRUM CHARGE CORONA/IMAGE TRANSFER

CORONA UNIT

(1) Cleaning of the PC Drum Charge Corona Housing (2) Cleaning of the PC Drum Charge Corona Grid Mesh (3) Cleaning of the Comb Electrode

........................................

........................

........

......

D-32 D-32

D-32 D-33

(4) Cleaning of the Image Transfer/Paper Separator

Coronas Wires

.......................................

D-33

ei

(5) Cleaning of the Image Transfer/Paper Separator

Coronas Housing

.....................................

D-33

(6) Cleaning of the Lower Pre-Image Transfer Guide

Plate

...............................................

(7) Replacement of the Ozone Filter

2-8. Fusing Unit

............................................

(1) Removal of the Fusing Unit (2) Cleaning of the Pre-Fusing Guide Plate (3) Removal of the Upper Fusing Roller (4) Cleaning of the Upper Fusing Roller

.......................

............................

.................

....................

(5) Cleaning of the Upper Paper Separator Fingers (6) Cleaning of the Fusing Thermistor (7) Removal of the Lower Fusing Roller (8) Cleaning of the Lower Fusing Roller

......................

....................

(9) Cleaning of the Lower Paper Separator Fingers

(10)

Removal of the Oil Roller

(11) Cleaning of the Oil Roller

.............................

..........

D-34 D-34 D-34 D-34 D-35 D-35 D-37

D-37 D-37 D-38 D-38 D-38 D-39 D-39

3 1 ADJUSTMENT

3-1.

JIGS AND TOOLS USED

................................

3-2. ADJUSTMENT REQUIREMENTS LIST 3-3. ADJUSTMENT OF SWITCHES

(1) Adjustment of Front Door Interlock Switch

3-4. ELECTRICAL/IMAGE ADJUSTMENT

(1) Adjustment of the Maximum Exposure Lamp Voltage

for the Manual Mode

..................................

(2) Adjustment of the Optimum Exposure Setting in the

Manual Mode

........................................

(3) Adjustment of the Optimum Exposure Setting in the

Auto Mode

..........................................

....................

...........................

S21

.....................

...........

D-40 D-41 D-42 D-43

D-44 D-44 D-47

D-48

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CONTENTS

(4) Adjustment of the ATDC Sensor (5) Adjustment of the Aperture Blades (6) Adjustment of the Multi Bypass Table Reference

Position..

...........................................

(7) Adjustment of the 1st Drawer Reference Position (8) Adjustment of the Leading Edge Registration

FullSize

Enlargement

Reduction

..........................................

.......................................

.........................................

(9) Adjustment of the Image Leading Edge Erase

Width

...............................................

(10) Adjustment of the Edge Erase

Lamp Position

3-5. OTHER ADJUSTMENTS

......................................

................................

(1) Adjustment of the Scanner/Mirrors Carriage Position (2) Adjustment of the Gap Between the Doctor Blade and

Sleeve Roller

........................................

(3) Adjustment of the PC Drum Paper Separator Fingers

Position

4 1 MISCELLANEOUS

.............................................

4-1. INSTALLATION OF THE PLUG-IN COUNTER MOUNTING

BRACKET (OPTION). . . . . . . . . . . . . . ,

........................

......................

.............

. . . . , , . . , . . , . . . . . D-63

.........

......

D-49 D-50

D-51 D-52 D-53 D-53

Dr55

D-56 D-57 D-59

D-60 D-60

D-61 D-62

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1139SBDOiOOA

SERVICE INSTRUCTIONS

1151SBD0101A l-1.

PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS

Observe the following precautions whenever servicing the copier.

Be sure to unplug the copier from the outlet before attempting to service the copier.

The basic rule is not to operate the copier anytime during disassembly. If it is absolutely necessary to run the copier with its covers removed, use care not to allow your clothing to be caught in revolving parts such as the timing belt and gears.

Be sure to use the Interlock Switch Actuating Jig whenever it is necessary to actuate the Interlock Switch

with the covers left open or removed.

Do not plug in or unplug print jacks on the Board or connect or disconnect the Board connectors while power is being supplied to the copier.

Do not use flammable spray around the copier in operation.

The Magnet Roller of the Imaging Unit generates strong magnetic force. Do not bring it near a cathode-ray tube or watch.

The lithium cell in RAM Board PWB-R can burst. At replacement, make sure of the correct polarity and do not change it or create a closed circuit.

A used lithium cell should be disposed of according to the local regulations and never be discarded casual-

ly or left unattended at the users premises.

Do not use an air gun or vacuum cleaner for cleaning the ATDC Sensor and other sensors, as they can cause electrostatic destruction. Use a blower brush and cloth. If a unit containing these sensors is to be

cleaned, first remove the sensors from the unit.

When handling the

When handling the PC Drum, observe precautions given in 1-3. Handling of the PC Drum.

Note that replacement of a PWB may call for readjustments or resetting of particular items.

Use the right screw in the right place at reassembly. Note that some are longer and some are thicker than

PWBs

with MOS

ICs,

observe l-2.

Instructions

for

Handling the

PWBs

with MOS

ICs.

others.

A toothed washer is used with the screw that secures the ground wire to ensure positive conduction. Do not forget to insert this washer at reassembly.

To reassemble the copier, reverse the order of disassembly unless otherwise specified.

If it becomes necessary to replace the thermal fuse or any other fuse mounted on a board, be sure to use one of the rating marked on the blown fuse.

Always note the rating marked on the fuse, as the rating and mounting site or number used are subject to change without notice.

Do not pull out the Toner Hopper while the Toner Bottle is turning, as a

damaged

Toner Replenishing Motor

or locking mechanism could result.

If the copier is to be run with the Front Door swung down, make sure that the Toner Hopper is in the locked

position.

CAUTION: DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISCARD USED BATTERIES ACCORDING TO THE MANUFACTURERS INSTRUCTIONS.

D-i

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1139S!3DOiOZA

1-2. INSTRUCTIONS FOR HANDLING THE

PWBs

WITH MOS

ICs

The following precautions must be observed when handling P.W. Boards with MOS (Metal Oxide Semiconductor)

ICs.

During Transportation/Storage:

During transportation or when in storage, new P.W. Boards must not be indiscriminately removed from

their protective conductive bags.

Do not store or place P.W. Boards in a location exposed to direct sunlight.

When it becomes absolutely necessary to remove a Board from its conductive bag or case, always place

it on its conductive mat in an area as free as possible from static electricity.

Do not touch the pins of the

ICs

with your bare hands.

During Replacement:

Before unplugging connectors from the

F.W.

Boards, make sure that the power cord has been unplugged

from the outlet.

When removing a Board from its conductive bag or conductive case, do not touch the pins of the

ICs

the printed pattern. Place it in position by holding only the edges of the Board.

Before plugging connectors into the Board, make sure that the power cord has been unplugged from the

power outlet.

During Inspection:

Avoid checking the IC directly with a multimeter; use connectors on the Board.

Never create a closed circuit across IC pins with a metal tool.

When it is absolutely necessary to touch the

ICs

and other electrical components on the Board, be sure

to ground your body.

1151SBD0103A

I-3.

HANDLING OF THE PC DRUM

During Transportation/Storage:

Use the specified carton whenever moving or storing the PC Drum.

The storage temperature is in the range between -20C and

In summer, avoid leaving the PC Drum in a car for a long time.

+40%.

Handling:

Ensure that the correct PC Drum is used.

Wheneverthe PC Drum has been removed from the copier, store it in its container or protect it with a Drum

Cloth.

The PC Drum exhibits greatest light fatigue after being exposed to strong light over an extended period

of time, Never, therefore, expose it to direct sunlight.

Use care not to contaminate the surface of the PC Drum with oil-base solvent, fingerprints, and other for-

eign matter.

Do not scratch the surface of the PC Drum.

Do not apply chemicals to the surface of the PC Drum.

Do not attempt to wipe clean the surface of the PC Drum.

D-2

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If, however, the surface is contaminated with fingerprints, clean it using the following procedure.

Place the PC Drum into one half of its container.

1076COOl

Gently wipe the residual toner off the surface of the PC Drum with a dry, Dust-Free Cotton Pad. a) Rotate the PC Drum so that the area of its surface on

which the line of toner left by the Cleaning Blade is present is facing straight up. Wipe the surface in one continuous movement from the rear edge of the PC Drum to the front edge and off the surface of the PC Drum.

b) Rotate the PC Drum slightly and wipe the newly ex-

posed surface area with a CLEAN face of the Dust-Free Cotton Pad. Repeat this procedure until the entire surface of the PC Drum has been thoroughly cleaned.

At this time, always use a CLEAN face of the dry Dust-Free

Cotton Pad until no toner is evident on the face of the Pad after wiping.

3. Soak a small amount of either ethyl alcohol or isopropyl alcohol into a clean, unused Dust-Free Cotton Pad which has been folded over into quarters. Now, wipe the surface of the PC Drum in one continuous movement from its rear edge to its front edge and off its surface one to two times.

* Never move the Pad back and forth.

Using the SAME face of the Pad, repeat the procedure explained in the latter half of step 3 until the entire surface of the PC Drum has been wiped. Always OVERLAP the areas when wiping. Two complete turns of the PC Drum would be appropriate for cleaning.

NOTES

The Organic Photoconductor Drum is softer than

CdS

and Selenium Drums and is therefore suscepti-

ble to scratches.

Even when the PC Drum is only locally dirtied, wipe the entire surface.

Do not expose the PC Drum to direct sunlight. Clean it as quickly as possible even under interior illu-

mination.

If dirt remains after cleaning, repeat the entire procedure from the beginning one more time.

D-3

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1151SBD0104A

1-4. PARTS WHICH MUST NOT BE TOUCHED (1) Screws

Purpose of Application of Red Paint

Red

paint is applied to the screws which cannot be readjusted, set, or reinstalled in the field. The basic rule is not to remove or loosen the screws to which red paint is applied. In addition, be advised that, if two or more screws are designated as those which must not be touched on a single part, only one representative screw may be marked with red paint.

(2) Variable Resistors on Board

Do not turn the variable resistors on boards for which no adjusting instructions are given in ADJUSTMENT.

(3) Other Screws

Lower Pre-Image Transfer

Guide Plate (2 screws)

Lens Rail height setting screws (2)

D-4

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1139SBD0200A

DISASSEMBLY/REASSEMBLY

1158SSD0201A

2-1.

DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND RE-

MOVAL PROCEDURES

1158D017AA

1158D018AA

1158D019AA

D-5

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No.

Front Door

Control Panel

Original Scales

3 4

Oriainal Glass Rear Upper Cover

(Small)

Left Hinge Cover

Part Name

Removal Procedure

Swing down Belt. + Remove two screws that secure the Front: Door (only on one side). + Slide screws have been removed.

Swing down the Upper Half of the copier. + Remove two screws that secure the control panel and loosen another

five screws that secure the control panel.

Remove two screws that secure the Scales. Remove the Original Cover. + Release and swing up the

Upper Half of the copier. + Remove the Screw Cover and one mounting screw of No.5

Remove the Original Cover. + Remove one screw that secures the Left Hinge Cover.

No.1.

Remove one screw that secures the

Zhe

Door to the side from which the

No.1.

Remove No.9. + Release and swing up

No.21.

Remove

Remove the Original Cover. + Remove

Upper Right Cover

Right Cover

Middle Right Cover Right Door Multi Bypass Table

Mounting Counter Cover

1 st Drawer

Rear Cover Swing down

Upper Rear Cover

181 Original Cover

Remove the Original Cover by pulling it up.

Bracket

Remove one screw that secures

Remove secure No.1 0.

Remove four screws that secure No.1 1. Open No.1 2 and remove it by lifting it up. Remove two screws that secure the Multi Bypass Table

Mounting Bracket. Remove No.1 4 by snapping if off. Slide out the Drawer and remove one screw that secures the

Stopper

Ihe

copier. + Remove two screws

Swing down No-l. the copier.

Rear Cover.

No.6,

No.7.

No.11,

Remove No.9. + Remove two screws that

at the rear left: corner.

No.1.

Release and swing up the Upper Half of

-_)

Release and swing up the Upper Half of

-_j

Remove three screws that secure the Upper

that

8 and 9.

secure the Rear Cover.

D-6

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No.

2324Lower Left Cover

Part Name

Upper Left Cover

Middle Front Left Cover Swing down

Front Exit Cover

Rear Exit Cover

Middle Rear Left Cover

Removal Procedure

Swing down the copier. Cover.

the copier. + Remove one screw that secures the Middle Front Left Cover.

Swing down the copier. cures the Front Exit Cover.

Swing down the copier. + Remove No.26. + Remove one screw that secures the Rear Exit Cover.

Remove two screws that secure the Lower Left Cover. Swing down

the copier. Rear Left Cover.

No.1.

Release and swing up the Upper Half of

-_j

Remove four screws that secure the Upper Left

No.1.

Release and swing up the Upper Half of

No.1.

Release and swing up the Upper Half of

--f

Remove No.22. + Remove one screw that se-

No.1.

Release and swing up the Upper Half of

No.1.

Release and swing up the Upper Half of

-_)

Remove one screw that secures the Middle

D-7

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1158SBD0202A

2-2. REMOVAL OF

When removing a PWB, first go over PRECAUTIONS FOR HANDLING THE

SWITCHES ON

Replacement of a PWB may call for readjustments or resetting of particular items.

The removal procedures given on the next page omit the steps to unplug connectors and remove the PWB

PWBs

and use the removal procedures given on the next page.

PWBs

contained in

from the PWB support.

PWB-C

D-8

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Symbol

Details of Readjustments/Resetting Involved In Replacement of PWB-R, and UN3.

PWB-A Master Board

PWB-C PWB-D PWB-E

PWB-H 1 AE Sensor Board PWB-P Control Panel

PWB-R RAM Board

PUl Power PU2

HVl High Voltage Unit Open 1. + Release and swing up the Upper Half of the copi-

UN3 ATDC Sensor

When PWB-R is replaced: Carry out Memory Clear and then make the Tech. Rep. Program, Users Choice, and Adjust settings again.

When UN3 is replaced: Discard the developer which had been used until UN3 was replaced, charge the Developing Unit with fresh starter, and adjust ATDC.

Name

Open 1. + Release and swing up the Upper Half of the copier. + Remove 19.

Power Supply Board Noise Filter Board Motor Drive Board Open 1 and 12. + Remove 9,10, and 11.

Supplv

Unit Open 1 and 12. + Remove

DC Power Supply Unit

Open 1. + Release and swing up the Upper Half of the copier. + Remove that secure the Power Supply Unit Cover.

Remove 3 and 4. + Remove the optical cover.

Open 1. + Remove 9. + Release and swing up the Upper Half of the copier. + Remove that secure Control Panel.

Open 1. + Release and swing up the Upper Half of the copier. + Remove 19.

Open 1. + Release and swing up the Upper Half of the copier. 4 Remove 17 and 18.

er. + Remove 19. + Remove PWB-A. Open 1. + Release and swing up the Upper Half of the copi-

er. + Take out the Synchronizing Roller Guide Unit.

Removal Procedure

17,18,

and 19. + Remove four screws

21.

Remove seven screws

9,10,

and 11.

I/U. +

Remove two screws that secure the

D-9

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1158SBD0203A

2-3. BELT INSTALLATIONS

Rear View

Drive/Suction Unit

115lD052AB

Paper Take-Up Unit

1142DOq5AA

D-10

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ll58SBD0204A

2-4. PAPER TAKE-UP/TRANSPORT SECTIONS (1) Removal of the Paper Take-Up Unit

Remove the Multi Bypass Table. (OPTION) See p. D-13. (NO 1 m 7)

Slide out the 1 st Drawer.

1158D021AA

Press the tabs at the two places indicated by the arrow and, at the same time, remove the cover.

Remove five screws and the Paper Take-Up Unit.

1158D024AA

1158D022AA

1158D023AA

Unplug the one connector from the solenoids on the Paper

Take-Up Unit.

Remove the Rear and Rear Upper covers.

Remove the DC Power Supply Unit.

Remove the harness from the wiring saddle.

Unplug the one connector.

D-11

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(2) Removal of the Paper Take-Up Rolls

Remove one screw to remove the Paper Take-Up Roll.

(3)

Cleaning of the Paper Take-Up Rolls

Remove the Paper Take-Up Unit from the copier.

1. Using a soft cloth dampened with alcohol, wipe clean the

Paper Take-Up Rolls.

Removal of the Suction Unit

Remove the Fusing

Unplug the Suction from the clamp.

Unit. (See p. D-34.) Fan connector and remove the wire

Remove four screws to remove the Suction Unit.

1151D030AA

(5) Disassembly of the Suction Unit

Remove the four Suction Drive Rolls and six bushings by

1. pulling them in the direction of the arrow.

1151D004AA

D-i 2

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1139D094AA

1151

DOOGAA

Snap off the three E-rings from the Suction Drive Unit.

3. Remove the gear and bushings.

4. Remove the Pre-Fusing Guide Plate.

5. Remove the Suction Drive Unit.

Remove the four belts.

7. Remove the Suction Fan.

(6) Disassembly of the Multi Bypass Table (OPTION)

1. Remove the Right Door.

D-l 3

Page 20

Remove three screws and the Large Cover.

Remove one screw and the Small Cover.

Remove three screws and the Guide Lever Unit.

113QD240AA

Remove four screws and the Multi Bypass Table. Unplug the Multi Bypass Table connector.

D-14

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1139DlOlAA

Remove one screw and the Multi Bypass Table.

Unplug one connector.

Remove the Tension Unit.

10.

Remove two screws and the Clutch Mounting Bracket.

113QDlOZAA

113QD103AA

11.

Remove two screws and the Lower Guide.

12.

Remove four screws and the Separator Guide Plate Unit.

D-i

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1139D105AA

the parts shown on the left up against the copier frame

13.

Remove two screws and the Lever.

1139D106AA

,133D103AA

14.

Snap off one C-clip and remove the Separator Unit.

NOTE

Please use tweezers when reinstalling the C-clip.

15.

Snap off one C-clip and remove the Separator Roll Assy.

16.

Remove three screws and the Solenoid Mounting Bracket.

D-l 6

Page 23

113QDl10AA

1139DlllAA

Unplug one solenoid connector. Unplug one photosensor connector and remove the harness from the clamp.

sure that the Solenoid is in the deenergizedposition.

19. Snap off the two C-clips to remove the Paper Take-Up Roll Unit.

1139DllZAA

20.

Snap off the three C-clips to remove the Paper Feed Roll.

21.

Snap off one C-clip and remove the Paper Take-Up Roll.

D-l 7

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1151SBDO205A

2-5. OPTICAL SECTION (1) Removal of the Lens Drive Cable

Remove two screws and the Optical Section Cover.

Remove three screws and the Lens Cover.

Remove two screws, two clamps and the Lens Motor Unit.

Remove one screw and the Cable Fixing Bracket.

Remove the spring.

Remove the Cable Drive Gear and the Lens Drive Cable.

D-i 8

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(2) Winding of the Lens Drive Cable

Hold the Cable Drive Gear in position with its Bead at the bottom.

1139D119AA

Wind the shorter length of the Cable three turns clockwise around the Cable Drive Gear, working from the back to the front side. Then tape it.

1139D12OAA

Wind the longer length of the Cable five turns counterclockwise around the Cable Drive Gear, working from the front to back side. Then tape it.

1139D121AA

Slide the Cable Drive Gear onto its shaft and insert a wrench into the hole to position the Cable Drive Gear.

Pass the longer length of the Cable through the U-shaped

5. hole in the Light Blocking Plate and wind it around the Pulley farther away from the Cable Drive Gear.

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Temporarily secure the longer length of the Cable to the Cable Fixing Bracket, ensuring a distance of 5 f 2 mm for the dimension shown on the left.

Wind the shorter length of the Cable around the Pulley which is nearer to the Cable Drive Gear.

Hook the spring onto the shorter length of the Cable and

8. pull it to hook onto the longer length of the Cable.

Check that the dimension noted in step 6 above measures 5 f 2 mm. Then, secure the Cable Fixing Bracket. Remove the wrench and peel off the two pieces of tape.

10.

(3) Removal of the Scanner Drive Cable

Remove the Original Cover, Original Scales, and Original Glass.

Remove the Middle Right, Upper Right, Right, Upper Left, and Upper Rear Covers.

Remove the Left and Right Hinge Covers, Rear Upper Cover (Small), and Rear Upper Cover.

1. Align the Scanner with the rectangular hole in the upper copier frame and remove the screw from the Scanner Fix-

ing Bracket.

2. Remove the Fixing Bracket.

3. Unhook the spring to remove the shorter length of the

Cable.

D-20

Page 27

Move the

2ncV3rd

Mirrors Carriage toward the Scanner Drive Gear so that the Cable slacks off and then remove the longer length of the Cable.

Remove four screws and PWB-A.

Remove three screws and the Scanner Motor Mounting

Bracket.

Snap off one E-ring and remove the Scanner Drive Gear.

Remove two screws and the Pulley. Remove the Cable.

1139Dl32AA

D-21

Page 28

(4) Winding of the Scanner Drive Cable

Remark

Wheneverthe Scanner Drive Cable has been rewound,

Mirrors Carriage Position. See p. D-60.

be sure

to make

theAdjustment

of the Scanner/

Pulley C

\ 1139D134AA

1139D135M

11390133AA

Fit the Pulley to the Scanner Drive Gear using two screws.

2. Wind the shorter length of the Cable 2 turns clockwise

around the Pulley, working from the back to front side.

3. Wind the longer length of the Cable

clockwise

around the Pulley, working from the

side. Then, slip the Cable Holding Jig onto the Pulley.

5-3/4

turns

front

counter-

to back

D-22

Page 29

4.5.Fit the Scanner Drive Gear onto the Scanner Motor Mount-

ing Bracket using one E-ring. Secure the Scanner Motor Mounting Bracket to the frame using three screws.

Insert a wrench into the holes in the Scanner Drive Gear

1151D033AA

and the frame to position the Gear.

Wind the longer length of the Cable around Pulleys C and

7. B and then secure it to the frame.

113OD13OAA

1139D234AA

1139D141AA

Wind the longer length of the Cable around the lower groove in Pulley B (of the two grooves). Position the

nal

of the Cable as illustrated on the left.

Wind the shorter length of the Cable around Pulleys A and

termr-

NOTE

Wind the shorter length of the Cable around the upper groove in Pulley B (two grooves).

D-23

Page 30

Fit the Cable into the groove in the Wire Guide and hook the spring. Remove the wrench and Cable Holding Jig.

(5) Removal of the Scanner

Turn the Scanner Drive Gear to move the Scanner to the right-hand side of the copier. Then, remove three screws

I 

and the Scanner.

(6) Cleaning of the Exposure Lamp

Remove two screws and the Exposure Lamp Terminal.

2. Slide out the Exposure Lamp.

1076D131

Using a soft cloth dampened with alcohol, clean the Lamp by wiping its surface gently in one direction.

NOTE

When reinstalling the Lamp, use care not to allow the protruding navel of the Lamp to hit against the Lamp Reflector and that the protruding nave/points toward the opening in the Lamp Reflector.

D-24

Page 31

(7) Cleaning of the

Ist/2nd/3rd

Mirrors

Turn the Scanner Drive Gear to move the Scanner away from the Mirrors. Then, wipe clean the 1 with a soft cloth.

st/2nd/3rd

Mirrors

(8) Cleaning of the Lens and 4th Mirror

Gently dust off the surface of the Lens and 4th Mirror by using a dry soft cloth.

ror is seriously contaminated.

(9) Cleaning of the Optical Section Cooling Fan Filter

Unhook the Fan Cover at the bottom by slightly raising

and, at the same time pulling, the two catches on the bottom.

1139D149AA

Clean the Filter with a brush or a vacuum cleaner.

D-25

Page 32

1151SBD0206A

2-6. Imaging Unit (1) Disassembly, Cleaning, Replacement and Starter Changing of the Imag-

ing Unit

Remove the Imaging Unit from the copier.

Remove two screws and the Imaging Unit Cover.

Remove one screw and the PC Drum Charge Corona Unit.

Replacement of the PC Drum

Remove two screws and one Drum Pin to remove the PC Drum.

in the Manual and Auto Mode.  See pp. D-47 to D-48.

Replacement of the Toner Scattering Prevention Plate

Remove one screw, one shoulder screw and the Toner Scattering Prevention Plate.

Tilt the Developing Unit to remove the developer.

D-26

Page 33

Replacement of the Cleaning Blade

Remove two screws and the Lid.

8. Remove the spring.

Remove two screws, one spring, one cap and the Cleaning

Blade. Replace it with a new one.

NOTE

When the Cleaning Blade has been replaced, apply toner

the entire surface of the new Cleaning Blade.

Applying Toner to Cleaning Blade

Apply toner to the entire surface of the Cleaning Blade. (Do not forget to coat the surfaces on both ends.)

Install the PC Drum.

Apply a thin coat of toner to the PC Drum.

(

Turn the PC Drum

l/2

turns backward, then turn it one complete turn forward.

D-27

Page 34

Cleaning of the PC Drum Paper Separator Fingers

10.

Using a soft cloth dampened with alcohol, wipe clean the Paper Separator Fingers.

Cleaning of the Ds Positioning Collar

Cleaning of the Paper Dust Remover

11.

Using a soft cloth dampened with alcohol, wipe clean the Ds Positioning Collars.

12.

Remove two screws, two compression coil springs and the Synchronizing Roller Unit.

When removing the Synchronizing Roller Unit, use care not to lose the compression coil springs. At reinstallation, fit the close-coiled end of the springs to the bosses on the

13. Remove the Synchronizing Roller.

14.

Using a brush, whisk the dust and dirt off the Filter.

1139D153AA

Replacement of the Toner Antispill Mylar

15.

Remove two screws and the Bias Seal. (No Bias Seals are mounted in the copiers for the U.S.A., Canada, and Europe.)

16.

Remove two screws and the Toner Antispill Mylar and replace the Mylar.

D-28

Page 35

against the Imaging Unit Housing and the front side of the

copier (in the directions of the arrows).

Cleaning of the Upper

Cleaning of the Magnet Roller Lower Filter

We-Image

1139D160AA

Transfer Guide Plate

17. Remove two screws and the Upper Pre-Image Transfer

18.

19.

Guide Plate.

Using a brush, whisk toner and dust off thesurface of the Upper Pre-Image Transfer Guide Plate.

Using a brush, whisk toner and dust off the Magnet Roller Lower Filter. (No Magnet Roller Lower Filters are mounted in the copiers for the U.S.A., Canada, and Europe.)

113QDWlAA

Refit the parts to the Imaging Unit and reinstall the Imaging

20. Unit in the copier. Charge fresh starter and make the ATDC adjustment. See

21.

p. D-49.

D-29

Page 36

(2) Cleaning of the Main Erase Lamp

Remove four screws and PWB-A.

Remove three screws and

Unplug the connector of the Main Erase Lamp.

Remove the Imaging Unit,

Pull out the Toner Bottle Holder to the front.

Remove one screw and the Main Erase Lamp.

Using a brush or a soft cloth dampened with alcohol, clean

the Erase Lamp.

NOTE

Do not touch the Lamp with bare hands.

HVl

(3) Cleaning of the Edge Erase Lamp

)

Remove four screws and PWB-A.

1151

D034AA

Insert PWB-A into the copier to secure it.

1151D035AA 1

D-30

Page 37

Go to the rear of the copier and unplug the connector of

Edge Erase Lamp.

4. Remove the imaging Unit.

Remove one screw and the Edge Erase Lamp.

NOTE

When removing the Erase Lamp, use care not to lose the

pressure spring in the rear.

Using a brush or a soft cloth dampened with alcohol, clean the Erase Lamp.

ment of the Edge Erase Lamp Position.  See p. D-59.

D-31

Page 38

1158SBD0207A

2-7. PC DRUM CHARGE CORONA/IMAGE TRANSFER CORONA UNIT (1) Cleaning of the PC Drum Charge Corona Housing

1. Remove the Imaging Unit.

Remove one screw and PC Drum charge Corona Unit.

Press the Mesh Holder on the front of the Corona Unit in

the direction of arrow A to remove the Grid Mesh.

1151

D037AA

1139D175AA

Remove the Cleaning Pad Cover.

Remove the End Caps from the front and rear ends of the Unit.

Use care not to deform the Electrode. When removing it,

 f@ff;ffyj+

1139D176AA

Using a soft cloth dampened with alcohol, wipe the Housing clean of dirt.

(2) Cleaning of the PC Drum Charge Corona Grid Mesh

Blow all foreign matter off the Grid with a blower brush.

sot?

cloth dampened with alcohol to clean serious

1139D178AA

D-32

con-

Page 39

(3)

Cleanqng

of the Comb Electrode

Clean the Comb Electrode using the Corona Unit Cleaning Lever.

1139D179AA

(4) Cleaning of the Image Transfer/Paper Separator Coronas Wires

Clean the Image Transfer Corona Wire using the Corona

Wire Cleaning Lever.

1139DZOAA

Remove the four Paper Guides. Dampen a soft cloth with alcohol, hold it with a pair of tweezers, and wipe the Paper Separator Corona Wire gently in one direction. (Go from the hook to spring end.)

(5) Cleaning of the Image Transfer/Paper Separator Coronas Housing

Remove the four Paper Guides.

2. Remove the two End Caps.

Remove the Image Transfer and Paper Separator Corona

Wires.

NOTE

I -

When removing the Wire, unhook the spring end first

1139D181AA

113QDlQZAA

and use care to prevent break and deformation. (Use a pair of tweezers)

Keep the Corona, Wire Cleaning Lever (for the image

Transfer Corona) pressed all the way back in. Do not attempt to remove the Lower Pre-Image Transfer Guide Plate as it has been adjusted for correct height.

Using a soft cloth dampened with alcohol, wipe the Housing clean of dirt.

D-33

Page 40

(6) Cleaning of the Lower Pre-Image Transfer Guide Plate

Using a brush, whisk dust off the Lower Pre-Image Transfer Guide Plate.

113QDliiAA

(7) Replacement of the Ozone Filter

1. Press the Filter Cover Bracket in the direction of the arrows and pull it off.

2. Remove the Filter and replace it with a new one.

1158SBD0208A

2-8. Fusing Unit (1) Removal of the Fusing Unit

Remove one screw and the Ground Wire of the Fusing Unit.

1151D038AA

2. Unplug the Fusing Heater Lamp connector and remove the wires from the clamp.

1151DOO8AA

Unplug the Fusing Thermistor connector and remove the wires from the two clamps.

D-34

Page 41

Remove one screw and the Fusing Unit Locking Plate.

Turning it in the direction of the arrow, remove the Fusing

Unit.

NOTE

When reinstalling the Fusing Unit, install the Locking Plate

as illustrated on the left.

1139D246AA

(2) Cleaning of the Pre-Fusing Guide Plate

Using a soft cloth dampened with alcohol, wipe clean the Guide Plate.

(3) Removal of the Upper Fuslng Roller

Remove two screws and the Fusing Unit Front Cover.

Remove two screws and the Fusing Unit Upper Cover.

1139DlQlAA

Remove two screws and the Upper Paper Separator Fingers Unit.

1139DlQZAA

D-35

Page 42

1151D012AA

Remove four Cord Holders of the Fusing Thermistor.

Remove one screw and the Fusing Thermistor.

Remove the screw and clamp that secure the Lamp harness at the front of the copier.

Remove the rear lamp harness and harness clamp (six).

Remove the mounting bracket (one screw).

1151D013AA

1151D014AA

Remove the Fusing Thermoswitch (two screws).

D-36

Page 43

1139DlOfMA

10. Slide out the Fusing Heater Lamp.

11. Remove two C-clips.

12. Remove one spur gear.

13. Remove two bushings.

14. Remove the Upper Fusing Roller.

1139D197AA

(4) Cleaning of the Upper Fusing Roller

Using a soft cloth dampened with alcohol or silicone

wipe clean the Upper Fusing Roller.

oil,

(5)

Cleaning of the Upper Paper Separator Fingers

1130D198AA

1. Using a soft cloth dampened with alcohol or silicone oil, wipe clean the Upper Separator Fingers.

(6) Cleaning of the Fusing Thermistor

Remove one screw to remove the Fusing Thermistor.

2. Using a soft cloth dampened with alcohol or silicone oil, wipe clean the Thermistor,

1151D039AA

D-37

Page 44

Removal of the Lower Fusing Roller

113OD20iAA

Turning it in the direction of the arrow, remove the Lower Separator Fingers Unit.

2. Remove the Lower Fusing Roller

(8) Cleaning of the Lower Fusing Roller

Using a soft cloth dampened with alcohol or silicone oil,

wipe clean the Lower Fusing Roller.

1139D203AA 1

(9) Cleaning of the Lower Paper Separator Fingers

Using a soft cloth dampened with alcohol or silicone oil,

wipe clean the Lower Separator Fingers.

1139D204AA

D-38

Page 45

(10) Removal of the Oil Roller

Remove the front holder (one screw).

2. Remove the front bushing.

(11) Cleaning of the Oil Roller

1. Using a brush, clean the Oil Roller.

1136D232AA

D-39

Page 46

1139SBD0300A

ADJUSTMENT

1151SBD0301A

3-1. JIGS AND TOOLS USED

Important

When adjusting the positions of the Scanner and Mirrors Carriage, use Jigs numbered

When adjusting the gap between the Doctor Blade and Sleeve Roller, use Jigs numbered

When adjusting the position of PC Drum Paper Separator Fingers, use Jigs numbered

Cable Holding jig

Front Door Interlock

Switch Actuating Jig

and

and 6.

and

63.

1139D071AA

Scanner Positioning jig

Sleeve/Magnet Roller

Position jig

\\@

1139D075AA

PC Drum Paper

Separator Fingers Positioning jig

lTYr!Ll

Scanner/Mirrors

Carriage Positioning jig

D.B. Adjusting jigs

1139D072AA

1151

D022AA

D-40

Page 47

1158SBD0302A

3-2. ADJUSTMENT REQUIREMENTS LIST

Adjustment Item

Max. Exposure Lamp Voltage

Optimum Exposure Setting in the Manual Exposure Mode

Optimum Exposure Setting in the Auto Exposure Mode

Multi Bypass Table Reference Position

1 st Drawer Reference Position

Full Size Leading Edge Registration

~~~r$sa~$

Reduction Leading Edge Registration

Image Leading Edge Erase Width

Edge Erase Lamp Position

Leading Edge

Requirements Adjusting Point

100 to 127V areas: 81 f 1 V

200

to 240V areas: 162 4 2 V Contra pane

Kodak Gray Scale: no image of the 1 st step,

faint image of the 2nd step

(100 %) 20 k 2 mm

(100%)20+2mm

(100 %) 20 5 1.5 mm Control panel

(200 %) 40 13 mm Control panel

(50%)

10*1.5mm

0.5 to 6.5 mm

1 + 0.5 mm

Control panel

Multi Bypass Table

Drawer Front Panel

Control panel

Control panel Adjusting Screw for

Edge Erase Lamp position

Ref.

Page

D-44

D-47

D-48

D-51

D-52

D-53

D-55

D-56

D-57

D-59

D-41

Page 48

1151SSD0303A

3-3. ADJUSTMENT OF SWITCHES Microswitches

The following microswitches are used in various parts of this copier.

Wirina for the NO Tvoe

NC (Normally-Closed)

Current flows between NC and COM when the actuator is open.

Wiring for the NC Type

NO (Normally-Open): Current flows between NO and COM when the actuator is closed.

COM (Common): Common contact for NC and NO

Requirement

Actuator

The gap between the switch and actuator

0.5 mm when the

actuator is closed.

should be 0.1 mm to

0.5 mm

1074Do40

Out-of-Adjustment

If the gap between the switch and actuator is too big, current does not at times flow to NC or NO.

If there is no gap between the switch and actuator, the actuator is bent or the switch can be broken.

(When the actuator is closed)

D-42

Page 49

(1) Adjustment of Front Door Interlock Switch S21

Open the Right Door.

Remove the Middle Right Cover. (4 screws)

Remove the Upper Right Cover. (2 screws) Remove the Right Cover. (2 screws)

Swing down the Front Door.

Remove the

Remove the Interlock Switch Cover. (2 screws)

I/U

Lock Lever. (1 screw)

113BD239AA

Loosen the two screws that secure Front Door Interlock Switch

521.

Move

S21

as far toward the front side of the

copier as it will go and temporarily secure it in position.

Gently swing the Front Door closed and then tighten the two S21 mounting screws to specification.

The Switch is wired for the NO type.

D-43

Page 50

1158SBD0304A

3-4. ELECTRICAL/IMAGE ADJUSTMENTS (1) Adjustment of the Maximum Exposure Lamp Voltage for the Manual

Mode

Requirement

Maximum Exposure Lamp voltage: 81 & 1 V (RMS value)

Important

After the maximum Exposure Lamp voltage has been adjusted, be sure to make the following adjustments: Optimum Exposure Setting in the Mode.

Manual Mode and Optimum Exposure Setting in the Auto

Remove the Large Cover. (3 screws)

Insert the probes of the multimeter into the receptacles of

the Exposure Lamp voltage measurement connector.

On the control panel, press the Stop Key, Multi-Copy Key

0,

Stop Key, and Multi-Copy Key 1, in that order, to set the copier into a state ready to enter a particular Mode. Press Multi-Copy Key 1 and then 3 to set the copier into the F3 Test Mode. (At this time, the Magnification Ratio Indicator shows the currently set value and the Multi-Copy Display shown

F3.)

Tech. Rep.

Press the Full Size Key to select the Lamp voltage setting mode. (The Magnification Ratio Indicator shows L + current setting.) Press the Start Key to light up the Exposure Lamp and, using the Zoom Up/Down Keys, adjust to obtain the Lamp voltage of 81 V.

Press the Stop Key to stop the F3 operation. (Or, the operation will be automatically completed in about 30 sec.) Press the Panel Reset Key twice (or turn OFF the Power Switch) to return the copier back into the normal mode.

NOTE

For the Root Mean Square values and Mean values, see

p. 48-50. Most testers, voltmeters, or multimeters used in

the field show only the mean values.

D-44

Page 51

When using the testers, voltmeters, or multimeters which show only the mean value, not Rms values, carry out the following procedure.

Measure the line voltage.

Referring to the Mean Value Chart corresponding to each voltage area, see the figure under the volt-

age obtained in step

If the line voltage is 125 V and Rms value is 81 V, for example, the mean value is 54.5 V.

Therefore, it is recommended that the voltage be adjusted so that the mean value is set as close to 54.5

V as possible.

MEAN VALUE

CHART FOR 115/l

104 105 106 107 106 109

60.7 60.3 60.0

20/l

27V AREAS

110

111

112 113

59.7 59.2 59.0 58.5 58.2 58.0

57.7

v;;“;

114 115 116

57.3 57.0 56.8 56.5 56.2 56.0

124 125 126 127 126 129 130

81.0 54.7 54.5 54.3 54.2 54.0 53.7 53.5 53.2 53.0 52.8

134 135 136 137 138 139 140

81 .O

52.7 52.5 52.2

117

116 119

52.1

52.0 51.7 51.5

120

121

122 123

55.7 55.5 55.2

131

132 133

![&f

55.0

v;t”‘E

MEAN

VALUE

D-45

Page 52

MEANVALUE

CHARTFOR200/220/240VAREAS

180

181

182 183 184 185 186 187 188 189

162.0 135.9 135.2 134.5 133.8 133.2 132.6 131.9 131.4 130.8 130.2

190

191

192 193 194 195 196 197 198 199

162.0 129.7

162.0 124.7 124.2 123.9 123.5

162.0 120.7 120.4 120.0 119.7 119.2 119.0 118.6 118.2 118.0 117.6

162.0 117.2 117.0 116.7 116.4

162.0 114.2 114.0 113.7 113.5 113.2 112.9 112.7 112.4

162.0

129.1

200

201

210

211

220

221

230

231

240

241

111.6 111.4

128.6

128.1

127.6

127.1

126.6

126.1

125.7 125.2

202 203 204 205 206

123.1

122.7 122.2 121.9 121.5

212 213 214 215 216 217 218 219

222 223 224 225 226 227 228 229

116.1

115.7 115.5 115.2 114.9 114.6

232 233 234 235 238

242 243 244 245 246 247 248 249

111.1

110.9 110.6 110.4 110.2 109.9 109.7 109.5

207

237

208 209

121.1

238 239

112.1

111.9

!$$$E

y;,/E

!$/$

YfffE

vMA'L"u"E

y;,/E

MEAN

,,AL,,E

250

162.0 109.2

260

162.0

107.1

270

105.1

251

252 253 254 255 256 257 258 259

111.4

111.1

110.9 110.6 110.4 110.2 109.9 109.7 109.5

261

262 263 264 265 266 267 268 269

106.9 106.6 106.4 106.2 106.0 105.7 105.6 105.4 105.2

271

272 273 274

104.9 104.7 104.5 104.2

v;;fE

D-46

VMAELfuNE

y;$E

Page 53

(2) Adjustment of the Optimum Exposure Setting Cn the Manual Mode

Requirement

When the manual exposure setting is at the central indication, no image of step no. 1 of a Kodak Gray

Scale should be produced on the copy, but a faint image of step no. 2 should be produced.

Important

This adjustment should be carried out only after completing Adjustment of the Maximum Exposure

Lamp Voltage for the Manual Mode and Adjustment of the Aperture Blades.

Place the Kodak Gray Scale lengthwise, face down, and at the center on the Original Glass. Place a sheet of pure white A3 or 11 inal Cover. Set the copier into the Manual Exposure Mode. Set the Exposure Setting to the central or copies to be made by using the Multi-Copy Keys. (Use A3

paper.)

Press the Start Key. Check that the 15th copy meets the requirement given

above.

x 17"

paper over it and then lower the Orig-

fifth

indication and enter

If the exposure is out of adjustment, press the Stop Key,

Multi-Copy Key that order, to set the copier into a state ready to enter a

0,

Stop Key, and Multi-Copy Key

1,

par-

tiaular Tech. Rep. Mode.

Press Multi-Copy Key 1 m and then

the F3 Test

fvlode.

(At this time, the Magnification Ratio In-

3

to set the copier into

dicator shows the currently set value and the Multi-Copy

Display shows

Using the Zoom Up/Down Keys, vary the value on the

F3.)

Magnification Ratio Indicator as necessary.

After the adjustment has been made, press the Panel Re-

7. set Key twice (or turn OFF the Power Switch) to return the copier back into the normal mode.

Increase the value to make the image lighter Decrease the value to make the image darker.

D-47

Page 54

(3) Adjustment of the Optimum Exposure Setting in the Auto Mode

Important

This adjustment must be made after the optimum exposure setting in the Manual Mode has been ad-

justed.

Place about five sheets of A3 or 11 x Original Glass and lower the Original Cover.

On the control panel, press the Stop Key, Multi-Copy Key

0,

Stop Key, and Multi-Copy Key 1, in that order, to set thecopier intoastate ready to Mode. Press Multi-Copy Keys 1 and

Test Mode. (At this time, the Multi-Copy Display shows

F5.)

Press the Start Key to let the copier make the adjustment.

After the adjustment has been made, press the Panel Reset Key twice (or turn OFF the Power Switch) to return the copier back into the normal mode.

enteraparticularTech.

17

paper on the

Rep.

5

to set the copier into the

NOTE

Pressing the Start Key lets the copier make the adjustment of optimum exposure setting.

During the adjustment, the Start Key is lit up orange. It turns to green as soon as the adjustment is completed. (It takes about 5 sec. to make the adjustment.) The Full Size Key can be used to alternately display on the Magnification Ratio Indicator either the

voltage value (AE Sensor output).

aojusting

value (AE Sensor memory level) or the

D-48

Page 55

(4) Adjustment of the ATDC Sensor

Important

This adjustment is not necessary when a new Imaging Unit has been installed. (The ATDC Sensor is

automatically adjusted when the starter is charged and the Power Switch turn ON.)

The adjustment must be made whenever the currently used Imaging Unit has been charged with new

starter.

Load the starter.

On the control panel, press the Stop Key, Multi-Copy Key

0,

Stop Key, and Multi-Copy Key 1, in that order, to set the copier into a state ready to enter a particular Tech. Rep. Mode. Press Multi-Copy Keys 1 and 8 to set the copier into the F8 Test Mode. (At this time, the Multi-Copy Display shows

F8.)

Press the Start Key to let the copier make the ATDC Sensor adjustment automatically. (It takes about 5 min. for the copier to complete the adjustment procedure.)

After the adjustment has been made, press the Panel Reset Key twice (or turn OFF the Power Switch) to return the copier back into the normal mode.

The

I/U

Counter available from the Consumables counter menu is automatically reset when the ATDC

Sensor

gain adjustment has been completed. The Full Size key can be used to alternately display the data on the Magnification Ratio Indicator, either the ATDC Sensor output voltage or ATDC Sensor gain.

D-49

Page 56

(5) Adjustment of the Aperture Blades

Requirement

There should be no dark or light bands running in the feeding direction on copies produced. (Adjust to

obtain the mean image density for all areas.)

Important

If dark and light bands running in the feeding direction occur on copies, make this adjustment after

checking the following.

1) The Drum Charge Corona Wire, Grid Mesh, and Image Transfer Corona Wire are free of dirt.

2) The surfaces of the Mirrors and Lens are free of dirt.

3) The surfaces of the Exposure Lamp and Main Erase Lamp are free of scratches and dirt.

4) The Cleaning Blade is free of waviness. Make a copy under the following control panel settings.

Original

Paper

Magnification : 100 % ratio Exposure

Remove the Original Glass.

Turn the copy on the Copy Tray around as shown to reverse the leading and trailing edges and align it with the Aperture Blades.

A3 or A4 crosswise,

11”

17”

or 11” x

8-i/2”

crosswise

A3 or A4 crosswise, 11” x 17” or 11” x

Manual (setting convenient for check)

8-l/2”

crosswise

Adjust to obtain the mean image density for all areas of the

copy.

NOTE

To make the image darker, move the Aperture Blade toward the Auxiliary Reflector, To make the image lighter, move the Aperture Blade away from the Auxiliary Reflector.

D-50

Page 57

(6) Adjustment of the Multi Bypass Table Reference Position

Requirement

Ready a test chart (A3 or 11 )r x 17) as shown on the left. Draw a line on the chart at a point 20 mm from the right

edge as shown.

Dimension A on the copy should measure

20 f 2.0 mm.

M+

1074DO89

1139D026AA

Place the test chart face down on the Original Glass and align its rear left corner with the Width Scale on the left side of the platen. Then, lower the Original Cover.

Using the Multi Bypass Table, make two full size copies.

Using the second copy, compare the position of the refer-

ence line on the copy with that on the test chart.

If the line does not meet the requirement, loosen the two

screws (OPTION : three screws) that secure the Multi By-

pass Table and move the Table as necessary in the direc-

tion of the arrows.

NOTE

If dimension A on the copy is smaller than 18 mm, move the

Table to the front If it is more than 22 mm, move the

Table to the rear.

When an Automatic or Duplexing Document Feeder is mounted, it involves changing the Original Glass. This in turn results in the position of the Original Length Scale being slightly shifted toward the rear. This is corrected by installing the Original Positioning Plate.

bmarker

on the Original

1151D024AA

D-51

Page 58

(7) Adjustment of the 1st Drawer Reference Position

Requirement

Ready a test chart (A3 or 11 x 17) as shown on the left.

Draw a line on the chart at a point 20 mm from the right

edge as shown.

Dimension A on the copy should measure 20 k 2.0 mm.

Important

If the Paper Tray of the Drawer needs to be moved for adjustment, make sure that it is moved straight,

not slantwise (as skewed feeding of paper could result).

Place the test chart face down on the Original Glass and align its rear left corner with the Dmarker on the Original Width Scale on the left side of the platen. Then, lower the Original Cover. Using the 1 st Drawer, make two full size copies. (Use A3 or Using the second copy, compare the position of the reference line on the copy with that on the test chart.

If the line does not meet the requirement, slide out the 1 st Drawer, loosen the four screws shown on the left, and move the Paper Tray as necessary to the front or rear.

dimension A on the copy is smaller than 18 mm, move the Paper Tray to the rear. If it is more than 22 mm, move the Paper Tray to the front.

NOTE

11

x 17 paper.)

D-52

Page 59

(8) Adjustment of the Leading Edge Registration Full Size

Requirement

Ready a test chart (A3 or 11 Draw a line across the test chart at a point 20 mm from the leading edge and use it as the reference line. Dimension A at the center on the copy should meet the

x 17)

as shown on the left.

Reduction (50

Setting value range: 30 to 70

Movement equivalent to 1 step of setting value: 0.28 mm

Important

After having set the copier into the Adjust Mode, make two single copies and use the second copy for

the check. (The first copy represents the data before adjustment.)

When full size leading edge registration has been adjusted, it affects leading edge registration in the

enlargement and reduction mode. Be sure, therefore, to check for registration in these modes, too.

Place the test chart face down on the Original Glass and align its rear left corner with the D marker on the Original

Width Scale on the left side of the platen. Then, lower the

Original Cover. Make two single copies in full size mode (100 %) and check for leading edge registration on the second copy. (If it meets the requirement, go to Adjustment of Enlargement Leading Edge Registration.)

lO.O?

1.5

D-53

Page 60

If the registration does not meet the requirement, go to the control panel and press the Stop Key, Multi-Copy Key Stop Key, and Multi-Copy Key 1, in that order, to set the copier into a state ready to enter a particular Tech. Rep.

Mode.

Press the Stop Key and then press the Start Key to set the

4. copier into the Adjust Mode. (At this time, the Magnification

Ratio Indicator shows A.)

Press Multi-Copy Key

the Magnification Ratio Indicator shows

Copy Display, the current setting value.)

Press the Clear Key to clear the current setting value.

With the old setting value used as reference, enter the new

setting value using the appropriate Multi-Copy Keys.

NOTE

dimension A on the copy is smaller than 18.5 mm, decrease the setting value. If dimension A on the copy is greater than 2 increase the setting value.

4

and press the Start Key. (Then,

A4

and the

1.5

0,

Multi-

mm,

Press the Start Key to validate the setting.

Press the Panel Reset Key twice (or turn OFF the Power Switch) to return the copier back to the normal mode.

10.

Make two single copies and check for leading edge registration on the second copy. (If it does not meet the requirement, perform steps 3 through 10 again.)

D-54

Page 61

Enlargement

(H-i-71

mEI

AUTO

1139D032CA

Afterthe

leading edge registration in the been adjusted, make two single copies in an enlargement mode (200 %) and check for leading edge registration on the second copy. (If the enlargement leading edge registration meets the requirement, go to Adjustment of Reduction Leading Edge

Registration.)

If the registration does not meet the requirement, go to the control panel and press the Stop Key, Multi-Copy Key Stop Key, and Multi-Copy Key copier into a state ready to enter a particular Tech. Rep. Mode.

Press the Stop Key and then press the Start Key to set the copier into the Adjust Mode. (At this time, the Magnification

Ratio Indicator shows A.)

Press Multi-Copy Key the Magnification Ratio Indicator shows A 5 and the Multi-Copy Display, the current setting value.)

5

and press the Start Key. (Then,

full

size mode has

1,

in that order, to set the

0,

Press the Clear Key to clear the current setting value.

5. With the old setting value used as reference, enter the new setting value using the appropriate Multi-Copy Keys.

Press the Start Key to validate the new setting. Press the Panel Reset Key twice (or turn OFF the Power

Switch) to return the copier back to the normal mode. Make two single copies and check for leading edge regis-

tration on the second copy. (If it does not meet the requirement, perform steps 2 through 9 again.)

D-55

Page 62

Reduction

After the leading edge registration in an enlargement

mode has been adjusted, make two single copies in a reduction mode (50 %) and check for leading edge registration on the second copy.

If the registration does not meet the requirement, go to the control panel and press the Stop Key, Multi-Copy Key

Stop Key, and Multi-Copy Key l, in that order, to set the

copier into a state ready to enter a particular Tech. Rep.

Mode.

Press the Stop Key and then press the Start Key to set the

copier into the Adjust Mode.

Ration Indicator shows A.)

(Atthis

time, the Magnification

0.

Press Multi-Copy Key

4. the Magnification Ratio Indicator shows A5 and the

Copy Display, the current setting value.)

Press the Clear Key to clear the current setting value.

With the old setting value used as reference, enter the new setting value using the appropriate Multi-Copy Keys.

If dimension A on the copy is greater than 11.5 mm, increase the setting value.

Press the Start Key to validate the new setting.

Press the Panel Reset Key twice (or turn OFF the Power Switch) to return the copier back to the normal mode.

Make two single copies and check for leading edge regis-

tration on the second copy. (If it does not meet the require-

ment, perform step 2 through 9 again.)

5

and press the Start Key. (Then,

Multi-

D-56

Page 63

(9) Adjustment of the Image Leading Edge Erase Width

Requirement

Ready a test chart (A3 or 11 17) as shown on the left. Paint a 20 mm-long rectangle in black at the center of the test chart along its leading edge as shown. Adjust so that the erase width along the leading edge of the painted area measures 0.5 to 6.5 mm.

Setting value range: 42 to 58

Movement equivalent to 1 step of setting value: 0.75 mm

Having a greater setting value results in a greater erase width.

Having a smaller setting value results in a smaller erase width.

Important

This adjustment must be made after the leading edge registration adjustment has been completed.

1074D107

Place the test chart face down on the Original Glass and align its rear left corner with the ()marker on the Original Width Scale on the left side of the platen. Then, lower the Original Cover. Make two single copies in full size mode (100 %) and check for leading edge erase width on the second copy.

If the erase width does not meet the requirement, go to the control panel and press the Stop Key, Multi-Copy Key Stop Key, and Multi-Copy Key copier into a state ready to enter a particular Tech. Rep. Mode. Press the Stop Key and then press the Start Key to set the copier into the Adjust Mode. (At this time, the Magnification Ratio Indicator shows A.)

1,

in that order, to set the

0,

Press Multi-Copy Key 1 l 2

5. (Then, the Magnification Ratio Indicator shows A 12 and the Multi-Copy Display, the current setting value.)

and press the Start Key.

D-57

Page 64

6. Press the Clear Key to clear the current setting value.

With the old setting value used as reference, enter the new setting value using the appropriate Multi-Copy Keys.

If the erase width on the copy is less than 0.5 mm,

Press the Start Key to validate the setting.

Press the Panel Reset Key twice (or turn OFF the Power

Switch) to return the copier back to the normal mode. Make two single copies and check for leading edge erase

10. width on the second copy. (If it does not meet the requirement, perform steps 3 through 9 again.)

11580006CA

D-58

Page 65

(10) Adjustment of the Edge Erase Lamp Position

Requirement

Edge erase width: Within 1 4 0.5 mm

Important

This adjustment must be made after the reference positions of the Multi Bypass Table and 1 st Drawers

have been adjusted.

With the Original Cover raised, place a sheet of A4 or

8-l/2 x 11 paper lengthwise on the Original Glass.

With the Original Cover raised, make a full size copy. Check the erase width on the

erase width adjusting screw as necessary to obtain an

erase width of less than 1 + 0.5 mm.

NOTE

Loosening the screw will make the erase width smaller. Tightening the screw will make the erase width greater.

front

edge and turn the edge

D-59

Page 66

1158SBD0305A

3-5. OTHER ADJUSTMENTS (1) Adjustment of the Scanner/Mirrors Carriage Position

Requirement

With the Scanner positioned correctly with reference to the upper copier frame, there should be no gap

between the Scanner/Mirrors Carriage and the Scanner/Mirrors Carriage Positioning Jig.

Remove the Original Cover, Original Scales, and Original Glass.

Temporarily tighten the screw on the Scanner Drive Cable Holding Bracket.

1139D051AA

1139D241AA

Align the rectangular hole in the upper copier frame with the U-groove in the Scanner, then insert the Scanner Positioning Jig into the hole.

Install the Scanner/Mirrors Carriage Positioning Jig between the Scanner and Mirrors Carriage.

Loosen the screw that has been temporarily tightened in step 2. Turn the helical gear of the Scan Pulley to press the

Mirrors Carriage up against the Scanner/Mirrors Carriage Positioning Jig and the Scanner.

Tighten the screw on the Scanner Drive Cable Holding

Bracket

D-60

Page 67

(2) Adjustment of the Gap Between the Doctor Blade and Sleeve Roller

Requirement

The gap between the Doctor Blade and the Sleeve Roller should be 0.35 mm

Important

Cover the PC Drum with the Drum Cloth to prevent it from being scratched.

Remove the Developer Scattering Prevention Plate.

Wipe the developer off the surface of the Sleeve Roller.

Install the Sleeve/Magnet Roller Positioning Jig onto the Imaging Unit.

1139DOiSAA

Loosen the three screws securing the Doctor Blade in position. Insert the D.B. Adjusting Jigs into Ehe space between the Doctor Blade and Sleeve Roller.

Press down the Doctor Blade until it positively contacts the

D.B.

Adjusting Jigs, then tighten the three screws to se-

cure it in position.

0.05 mm.

D-61

Page 68

(3) Adjustment of the PC Drum Paper Separator Fingers Position

Requirement

The gap between the PC Drum and the PC Drum Paper Separator Fingers should be 1 .O

the Separator Solenoid is in the deenergized position.

Important

Cover the PC Drum with the Drum Cloth to prevent it from being scratched.

Use care not to deform the Separator Fingers during the adjustment procedure.

Press part A shown below up against the PC Drum Paper Separator Fingers Positioning Jig for the ad-

justment (to prevent the Paper Separator Fingers from being deformed).

Install the Sleeve/Magnet Roller Positioning Jig, to which the PC Drum Paper Separator Fingers Positioning Jig has been fitted, onto the Imaging Unit.

1139D058AA

Turn the set screw on each of the two Finger Holders as necessary for the adjustment.

kO.5

mm when

Ensure that part A contacts the PC Drum Paper Separator Fingers Positioning Jig when the Separator Solenoid is in the deenergized position.

D-62

Page 69

1139SBD0400A

1151SBD0401A

4-1. INSTALLATION OF THE PLUG-IN COUNTER MOUNTING BRACKET

(OPTION)

1. Remove the Middle Right Cover.

2. Remove the Counter Cover.

Remove the Upper Right Cover.

4. Remove the Right Cover.

5. Connect the Plug-In Counter Connector,

1139DO54AA

Secure the Plug-In Counter Mounting Bracket by tightening the two screws.

D-63

Page 70

MINOUA

1996

MINOLTA

Printed in Japan

CO.,

LTD

MINOLTA CO,,

LTD,

1158-7992-1297110150

Printed in Japan

Minolta 1052 Disassem Adj

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

SERVICE INSTRUCTIONS

DISASSEMBLY/REASSEMBLY