MINOLTA 7145, 7235, 7228, 7222 Service Manual

SERVICE MANUAL

Models

7145/7222/7228/7235

APRIL 2004

CSM-7145/7222/7228/7235

KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.

7145/7222/7228/7235

SERVICE MANUAL

APRIL 2004

IMPORTANT NOTICE

Because of the possible hazards to an inexperienced person servicing this equipment, as well as the risk of damage to the equipment, Konica Minolta Business Solutions U.S.A., Inc. strongly recommends that all servicing be performed by Konica Minolta-trained service technicians only.

Changes may have been made to this equipment to improve its performance after this service manual was printed. Accordingly, Konica Minolta Business Solutions U.S.A., Inc., makes no representations or warranties, either expressed or implied, that the information contained in this service manual is complete or accurate. It is understood that the user of this manual must assume all risks or personal injury and/or damage to the equipment while servicing the equipment for which this service manual is intended.

Corporate Publications Department

Printed in U.S.A.

CONTENTS

SAFETY AND IMPORTANT WARNING ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

IMPORTANT NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1

SAFETY WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-2

SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

IMPORTANT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

SAFETY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-11

INDICATION OF WARNING ON THE MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-13

List of major differences between the 7145, 7235, 7228 and 7222 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

List of options corresponding to the 7145/7235/7228/7222 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

I OUTLINE

1. OUTLINE OF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

A. Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

B. Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

C. Copy paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

D. Machine data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

E. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

F. Consumables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

G. Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3. CENTER CROSS SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4. DRIVE SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4.1 Drum drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4.2 Cleaning/Developer agitation drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4.3 Fixing/Paper exit section/IT-101/RU-101 drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

4.4 Developing drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

4.5 Paper feed drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

4.5.1 Drive from paper feed motor to loop clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

4.5.2 Tray 1 drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

4.5.3 Tray 2 drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

4.5.4 Bypass feed drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

4.5.5 Registration clutch drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

4.6 ADU drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

4.7 Scanner drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

4.8 Toner supply drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY

CONTENTS

I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY

II UNIT EXPLANATION

1. SCANNER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

1.2.1 Initial operation when power is turned on and shading correction reading. . . . . . . . . . . . . . 2-2

1.2.2 Original reading mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

1.2.3 Original read control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

1.2.4 APS control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

1.2.5 AE control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

1.2.6 Image processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2. WRITE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.2.1 Image writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.2.2 Write control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

3. DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

3.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

3.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

3.2.1 Image formation timing (when copying two sheets) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

4. DEVELOPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

4.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

4.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

4.2.1 Developing control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

4.2.2 Control of toner density in the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

5. TONER SUPPLY/CLEANING/RECYCLE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

5.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

5.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

5.2.1 Toner supply control when the toner level in the toner supply section gets reduced . . . . . 2-18

5.2.2 Toner supply control when toner density in the developing unit gets reduced . . . . . . . . . . 2-19

6. PAPER FEED UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

6.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

6.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

6.2.1 Tray up drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

6.2.2 Paper feed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

6.2.3 Remaining paper detection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

6.2.4 Paper size detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

7. FIXING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

7.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

7.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

7.2.1 Fixing temperature control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

7.2.2 Cleaning web control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26

8. ADU/PAPER EXIT SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

8.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

8.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

8.2.1 Switching control of the paper exit/ADU conveyance path . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

8.2.2 ADU conveyance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31

8.2.3 Paper reverse control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

CONTENTS

9. INTERFACE SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

9.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

10.NETWORK SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

10.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

11.OTHER CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

11.1 Parts energized when the main power switch is off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37

11.2 Components operated when the power switch is on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38

11.2.1 Components operated when the SW1 (Main power switch) is on . . . . . . . . . . . . . . . . . . . 2-38

11.2.2 Components operated when the SW2 (Sub power switch) is on . . . . . . . . . . . . . . . . . . . . 2-39

11.3 Fan control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40

11.3.1 Composition of the cooling fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40

11.3.2 Fan operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41

11.4 Operation unit control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

11.4.1 Composition of operation unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

11.5 Counter control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

11.5.1 Counter composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

11.5.2 Counter operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

III DISASSEMBLY/ASSEMBLY

I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY

1. EXTERNAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.1 Replacing the ozone filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.2 Replacing the filter cover assembly and suction filter/A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

2. DRIVE SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

2.1 Removing and reinstalling the motor units (main, fixing, feed, developing) . . . . . . . . . . . . . . . . . 3-3

2.2 Replacing the registration clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

2.3 Replacing the loop clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

2.4 Removing the ribbon cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

2.5 Reinstalling the ribbon cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3. SCANNER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.1 Screws that must not be removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

3.2 Adjusting the angle of the operation unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3.3 Removing the operating unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

3.4 Removing the platen glass/slit glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

3.5 Removing and reinstalling the CCD unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

3.6 Replacing the exposure lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

3.7 Removing and reinstalling the exposure unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

3.8 Removing the optics wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

3.9 Installing the optics wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

4. WRITE UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

4.1 Removing and reinstalling the write unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

5. DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

5.1 Removing and reinstalling the drum unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

5.2 Removing and reinstalling the charging corona unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

5.3 Removing and reinstalling the charge control plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

5.4 Replacing the charging wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

5.5 Removing and reinstalling the drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

5.6 Removing and reinstalling the separation claw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

iii

CONTENTS

I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY

5.7 Removing and reinstalling the transfer and separation corona unit. . . . . . . . . . . . . . . . . . . . . . . 3-34

5.8 Replacing the transfer and separation wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34

6. DEVELOPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

6.1 Screws that must not be removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

6.2 Removing and reinstalling the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

6.3 Replacing the developer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

7. TONER SUPPLY/CLEANING/RECYCLE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

7.1 Removing and reinstalling the toner bottle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

7.2 Removing and reinstalling the toner supply unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

7.3 Removing and reinstalling the cleaning blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

8. PAPER FEED UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42

8.1 Replacing the paper feed roller and the feed roller (by-pass) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42

8.2 Replacing the double feed prevention roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44

8.3 Replacing the paper feed rubber and the feed rubber (tray 1). . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45

8.4 Replacing the double feed prevention rubber (tray 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47

8.5 Replacing the paper feed rubber and the feed rubber (tray 2). . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48

8.6 Replacing the double feed prevention rubber (tray 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50

8.7 Cleaning the paper dust removing brush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

9. FIXING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

9.1 Removing and reinstalling the fixing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52

9.2 Replacing the fixing heater lamps/1, /2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53

9.3 Removing and reinstalling the fixing claw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55

9.4 Replacing the fixing web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-56

9.5 Removing and reinstalling the fixing heat roller, fixing pressure roller, heat insulating sleeve/A, /B, fixing idling gear/B, fixing bearing/U, /L,

fixing heater lamp/1, /2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-59

9.6 Removing and reinstalling the fixing temperature sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-64

9.7 Removing and reinstalling the Fuse mounting plate assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 3-66

SAFETY AND IMPORTANT WARNING ITEMS

Read carefully the Safety and Important Warning Items described below to understand them before doing ser-

vice work.

IMPORTANT NOTICE

Because of possible hazards to an inexperienced person servicing this copier as well as the risk of damage to

the copier, Konica Minolta Business Technologies, INC. (hereafter called the KMBT) strongly recommends that

all servicing be performed only by KMBT-trained service technicians.

Changes may have been made to this copier to improve its performance after this Service Manual was printed.

Accordingly, KMBT does not warrant, either explicitly or implicitly, that the information contained in this Service

Manual is complete and accurate.

The user of this Service Manual must assume all risks of personal injury and/or damage to the copier while ser-

vicing the copier for which this Service Manual is intended.

Therefore, this Service Manual must be carefully read before doing service work both in the course of technical

training and even after that, for performing maintenance and control of the copier properly.

Keep this Service Manual also for future service.

DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION

In this Service Manual, each of three expressions “ DANGER”, “ WARNING”, and “ CAUTION” is defined

as follows together with a symbol mark to be used in a limited meaning.

When servicing the copier, the relevant works (disassembling, reassembling, adjustment, repair, maintenance,

etc.) need to be conducted with utmost care.

DANGER

WARNING

CAUTION

Symbols used for safety and important warning items are defined as follows:

:Precaution when using the copier.

:Prohibition when using the copier.

:Action having a high possibility of suffering death or serious injury

:Action having a possibility of suffering death or serious injury

:Action having a possibility of suffering a slight wound, medium trouble, and

property damage

General precaution Electric hazard High temperature

General prohibition Do not touch with wet hand Do not disassemble

:Direction when using the copier.

General instruction

S-1

Unplug

Ground/Earth

SAFETY AND IMPORTANT WARNING ITEMS

SAFETY WARNINGS

[1] MODIFICATIONS NOT AUTHORIZED BY

KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.

Konica Minolta brand copiers are renowned for their high reliability. This reliability is achieved through high-qual-

ity design and a solid service network.

Copier design is a highly complicated and delicate process where numerous mechanical, physical, and electrical

aspects have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors. For

this reason, unauthorized modifications involve a high risk of degradation in performance and safety. Such mod-

ifications are therefore strictly prohibited. the points listed below are not exhaustive, but they illustrate the rea-

soning behind this policy.

DANGER : PROHIBITED ACTIONS

• Using any cables or power cord not specified by KMBT.

• Using any fuse or thermostat not specified by KMBT. Safety will not be

assured, leading to a risk of fire and injury.

• Disabling fuse functions or bridging fuse terminals with wire, metal clips, sol-

der or similar object.

• Disabling relay functions (such as wedging paper between relay contacts)

• Disabling safety functions (interlocks, safety circuits, etc.) Safety will not be

assured, leading to a risk of fire and injury.

• Making any modification to the copier unless instructed by KMBT

• Using parts not specified by KMBT

S-2

SAFETY AND IMPORTANT WARNING ITEMS

[2] CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE

Konica Minolta brand copiers are extensively tested before shipping, to ensure that all applicable safety stan-

dards are met, in order to protect the customer and customer engineer (hereafter called the CE) from the risk of

injury. However, in daily use, any electrical equipment may be subject to parts wear and eventual failure. In order

to maintain safety and reliability, the CE must perform regular safety checks.

1.Power Supply

WARNING: Wall Outlet

• Check that mains voltage is as specified. Plug the power cord into the dedi-

cated wall outlet with a capacity greater than the maximum power consump-

tion.

If excessive current flows in the wall outlet, fire may result.

• If two or more power cords can be plugged into the wall outlet, the total load

must not exceed the rating of the wall outlet.

If excessive current flows in the wall outlet, fire may result.

WARNING: Power Plug and Cord

• Make sure the power cord is plugged in the wall outlet securely.

Contact problems may lead to increased resistance, overheating, and the

risk of fire.

• Check whether the power cord is damaged. Check whether the sheath is

damaged.

If the power plug, cord, or sheath is damaged, replace with a new power

cord (with plugs on both ends) specified by KMBT. Using the damaged

power cord may result in fire or electric shock.

• When using the power cord (inlet type) that came with this copier, be sure to

observe the following precautions:

a. Make sure the copier-side power plug is securely inserted in the socket

on the rear panel of the copier.

Secure the cord with a fixture properly.

b. If the power cord or sheath is damaged, replace with a new power cord

(with plugs on both ends) specified by KMBT.

If the power cord (inlet type) is not connected to the copier securely, a

contact problem may lead to increased resistance, overheating, and risk

of fire.

• Check whether the power cord is not stepped on or pinched by a table and

so on.

Overheating may occur there, leading to a risk of fire.

S-3

SAFETY AND IMPORTANT WARNING ITEMS

WARNING: Power Plug and Cord

• Do not bundle or tie the power cord.

Overheating may occur there, leading to a risk of fire.

• Check whether dust is collected around the power plug and wall outlet.

Using the power plug and wall outlet without removing dust may result in

fire.

• Do not insert the power plug into the wall outlet with a wet hand.

The risk of electric shock exists.

• When unplugging the power cord, grasp the plug, not the cable.

The cable may be broken, leading to a risk of fire and electric shock.

WARNING: Wiring

• Never use multi-plug adapters to plug multiple power cords in the same out-

let.

If used, the risk of fire exists.

• When an extension cord is required, use a specified one.

Current that can flow in the extension cord is limited, so using a too long

extension cord may result in fire.

Do not use an extension cable reel with the cable taken up. Fire may

result.

WARNING: Ground Lead

• Check whether the copier is grounded properly.

If current leakage occurs in an ungrounded copier, you may suffer electric

shock while operating the copier. Connect the ground lead to one of the

following points:

a. Ground terminal of wall outlet

b. Ground terminal for which Class D work has been done

S-4

SAFETY AND IMPORTANT WARNING ITEMS

WARNING: Ground Lead

• Pay attention to the point to which the ground lead is connected.

Connecting the ground lead to an improper point such as the points listed

below results in a risk of explosion and electric shock:

a. Gas pipe (A risk of explosion or fire exists.)

b. Lightning rod (A risk of electric shock or fire exists.)

c. Telephone line ground (A risk of electric shock or fire exists in the case

of lightning.)

d. Water pipe or faucet (It may include a plastic portion.)

2.Installation Requirements

WARNING: Prohibited Installation Place

• Do not place the copier near flammable materials such as curtains or volatile

materials that may catch fire.

A risk of fire exists.

• Do not place the copier in a place exposed to water such as rain water.

A risk of fire and electric shock exists.

WARNING: Nonoperational Handling

• When the copier is not used over an extended period of time (holidays, etc.),

switch it off and unplug the power cord.

Dust collected around the power plug and outlet may cause fire.

CAUTION: Temperature and Humidity

• Do not place the copier in a place exposed to direct sunlight or near a heat

source such as a heater.

A risk of degradation in copier performance or deformation exists.

Do not place the copier in a place exposed to cool wind.

Recommended temperature and humidity are as follows:

Temperature: 10

Humidity: 10% to 80% (no dew condensation)

Avoid other environments as much as possible.

to 30

CAUTION: Ventilation

• Do not place the copier in a place where there is much dust, cigarette

smoke, or ammonia gas.

Place the copier in a well ventilated place to prevent machine problems

and image faults.

S-5

SAFETY AND IMPORTANT WARNING ITEMS

CAUTION: Ventilation

• The copier generates ozone gas during operation, but it is not sufficient to be

harmful to the human body.

If a bad smell of ozone is present in the following cases, ventilate the

room.

a. When the copier is used in a poorly ventilated room

b. When taking a lot of copies

c. When using multiple copiers at the same time

CAUTION: Vibration

• When installing the copier, read the Installation Guide thoroughly. Be sure to

install the copier in a level and sturdy place.

Constant vibration will cause problems.

• Be sure to lock the caster stoppers.

In the case of an earthquake and so on, the copier may slide, leading to a

injury.

CAUTION: Inspection before Servicing

• Before conducting an inspection, read all relevant documentation (service

manual, technical notices, etc.) and proceed with the inspection following the

prescribed procedure in safety clothes, using only the prescribed tools. Do

not make any adjustment not described in the documentation.

If the prescribed procedure or tool is not used, the copier may break and a

risk of injury or fire exists.

• Before conducting an inspection, be sure to disconnect the power plugs from

the copier and options.

When the power plug is inserted in the wall outlet, some units are still pow-

ered even if the POWER switch is turned OFF. A risk of electric shock

exists.

• The area around the fixing unit is hot.

You may get burnt.

DANGER: Work Performed with the Copier Powered

• Take every care when making adjustments or performing an operation check

with the copier powered.

If you make adjustments or perform an operation check with the external

cover detached, you may touch live or high-voltage parts or you may be

caught in moving gears or the timing belt, leading to a risk of injury.

S-6

SAFETY AND IMPORTANT WARNING ITEMS

DANGER: Work Performed with the Copier Powered

• Take every care when servicing with the external cover detached.

High-voltage exists around the drum unit. A risk of electric shock exists.

WARNING: Safety Checkpoints

• Check the exterior and frame for edges, burrs, and other damages.

The user or CE may be injured.

• Do not allow any metal parts such as clips, staples, and screws to fall into the

copier.

They can short internal circuits and cause electric shock or fire.

• Check wiring for squeezing and any other damage.

Current can leak, leading to a risk of electric shock or fire.

• When disconnecting connectors, grasp the connector, not the cable.

(Specifically, connectors of the AC line and high-voltage parts)

Current can leak, leading to a risk of electric shock or fire.

• Carefully remove all toner remnants and dust from electrical parts and elec-

trode units such as a charging corona unit.

Current can leak, leading to a risk of copier trouble or fire.

• Check high-voltage cables and sheaths for any damage.

Current can leak, leading to a risk of electric shock or fire.

• Check electrode units such as a charging corona unit for deterioration and

sign of leakage.

Current can leak, leading to a risk of trouble or fire.

• Before disassembling or adjusting the write unit incorporating a laser, make

sure that the power cord has been disconnected.

The laser light can enter your eye, leading to a risk of loss of eyesight.

• Do not remove the cover of the write unit. Do not supply power with the write

unit shifted from the specified mounting position.

The laser light can enter your eye, leading to a risk of loss of eyesight.

• When replacing a lithium battery, replace it with a new lithium battery speci-

fied in the Parts Guide Manual. Dispose of the used lithium battery using the

method specified by local authority.

Improper replacement can cause explosion.

S-7

SAFETY AND IMPORTANT WARNING ITEMS

WARNING: Safety Checkpoints

• After replacing a part to which AC voltage is applied (e.g., optical lamp and

fixing lamp), be sure to check the installation state.

A risk of fire exists.

• Check the interlock switch and actuator for loosening and check whether the

interlock functions properly.

If the interlock does not function, you may receive an electric shock or be

injured when you insert your hand in the copier (e.g., for clearing paper

jam).

• Make sure the wiring cannot come into contact with sharp edges, burrs, or

other pointed parts.

Current can leak, leading to a risk of electric shock or fire.

• Make sure that all screws, components, wiring, connectors, etc. that were

removed for safety check and maintenance have been reinstalled in the orig-

inal location. (Pay special attention to forgotten connectors, pinched cables,

forgotten screws, etc.)

A risk of copier trouble, electric shock, and fire exists.

DANGER: HANDLING OF SERVICE MATERIALS

• Toner and developer are not harmful substances, but care must be taken not

to breathe excessive amounts or let the substances come into contact with

eyes, etc. It may be stimulative.

If the substances get in the eye, rinse with plenty of water immediately.

When symptoms are noticeable, consult a physician.

• Never throw the used cartridge and toner into fire.

You may be burned due to dust explosion.

S-8

SAFETY AND IMPORTANT WARNING ITEMS

DANGER : HANDLING OF SERVICE MATERIALS

• Unplug the power cord from the wall outlet.

Drum cleaner (isopropyl alcohol) and roller cleaner (acetone-based) are

highly flammable and must be handled with care. A risk of fire exists.

• Do not replace the cover or turn the copier ON before any solvent remnants

on the cleaned parts have fully evaporated.

A risk of fire exists.

• Use only a small amount of cleaner at a time and take care not to spill any

liquid. If this happens, immediately wipe it off.

A risk of fire exists.

• When using any solvent, ventilate the room well.

Breathing large quantities of organic solvents can lead to discomfort.

[3] MEASURES TO TAKE IN CASE OF AN ACCIDENT

1. If an accident has occurred, the distributor who has been notified first must immediately take emergency

measures to provide relief to affected persons and to prevent further damage.

2. If a report of a serious accident has been received from a customer, an on-site evaluation must be carried

out quickly and KMBT must be notified.

3. To determine the cause of the accident, conditions and materials must be recorded through direct on-site

checks, in accordance with instructions issued by KMBT.

4. For reports and measures concerning serious accidents, follow the regulations given in “Serious Accident

Report/Follow-up Procedures”.

[4] CONCLUSION

1. Safety of users and customer engineers depends highly on accurate maintenance and administration.

Therefore, safety can be maintained by the appropriate daily service work conducted by the customer

engineer.

2. When performing service, each copier on the site must be tested for safety. The customer engineer must

verify the safety of parts and ensure appropriate management of the equipment.

S-9

SAFETY AND IMPORTANT WARNING ITEMS

SAFETY INFORMATION

IMPORTANT INFORMATION

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented

regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products mar-

keted in the United States.

This copier is certified as a “Class 1” laser product under the U.S.

Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation

Control for Health and Safety Act of 1968. Since radiation emitted inside this copier is completely confined within

protective housings and external covers, the laser beam cannot escape during any phase of normal user opera-

tion.

S-10

SAFETY CIRCUITS

SAFETY AND IMPORTANT WARNING ITEMS

This machine is provided with the following safety circuits

to prevent machine faults from resulting in serious acci-

dents.

[1] Overall protection circuit

[2] L2 and L3 (fixing heater lamp/1, /2) overheat-

ing prevention circuit

These safety circuits are described below to provide

the service engineer with a renewed awareness of

them in order to prevent servicing errors that may

impair their functions.

[1] Overall protection circuit

CBR1

DCPS

CBR2

1. Protection by CBR1 and CBR2 (circuit

breaker/1, /2)

CBR1 and CBR2 interrupt the AC line instanta-

neously when an excessive current flows due

to a short in the AC line.

CAUTION:

The CBR1 and CBR2 functions must not

be deactivated under any circumstances.

[2] L2 and L3 (fixing heater lamp/1, /2)

overheating prevention circuit

DCPS

RL1

TH1 TH2

Control section

AC driver

section

1. Protection by software

The output voltage from TH1, TH2 (fixing tem-

perature sensor/1, /2) is read by the CPU. If

this voltage is abnormal, L2 (fixing heater

lamp/1), L3 (fixing heater lamp/2) and RL1

(main relay) are turned OFF.

CAUTION:

The RL1 function must not be deactivated

under any circumstances.

FCB

S-11

SAFETY AND IMPORTANT WARNING ITEMS

2. Protection by the hardware circuit

The output voltages from TH1, TH2 (fixing tem-

perature sensor/1, /2) are compared with the

abnormality judgment reference value in the

comparator circuit. If the output voltage from

TH1 or TH2 exceeds the reference value, L2

(fixing heater lamp/1), L3 (fixing heater lamp/2)

and RL1 (main relay) are turned OFF in hard-

ware means.

CAUTION:

Periodically check the TH1, TH2 face

contacting the roller, and replace TH2 if

any abnormality is detected.

The RL1 function must not be deactivated

under any circumstances.

3. Protection by TS (thermostat)

When the fixing heat roller exceeds the speci-

fied value, TSs (thermostats) are turned OFF,

thus interrupting the power to L2 (fixing heater

lamp/1), and L3 (fixing heater lamp/2) directly.

CAUTION:

Do not use any other electrical conductor

in place of TS1 and TS2.

S-12

SAFETY AND IMPORTANT WARNING ITEMS

INDICATION OF WARNING ON THE MACHINE

Caution labels shown below are attached in some areas on/in the machine.

When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns

and electric shock.

[1] Main body

1. Right side

<7145>

CAUTION

The fixing unit is very hot.

To avoid getting burned

DO NOT TOUCH.

CAUTION

This area generates high voltage. If touched, electrical shock may occur. DO NOT TOUCH!

(Inside of the main body front door)

CAUTION

The roller shaft on the inside

(Inside of the main body right side door)

of the cover is very hot. To avoid getting burned DO NOT TOUCH. If the cover comes off, return it to its original position.

7322sf001e

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-13

SAFETY AND IMPORTANT WARNING ITEMS

<7235/7228/7222>

7322sf002e

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-14

2. Front side

<7145>

SAFETY AND IMPORTANT WARNING ITEMS

7322sf003e

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-15

SAFETY AND IMPORTANT WARNING ITEMS

<7235/7228/7222>

7322sf004e

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-16

3. Rear/Left side (7235/7228/7222 only)

SAFETY AND IMPORTANT WARNING ITEMS

7322sf005e

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-17

SAFETY AND IMPORTANT WARNING ITEMS

4. Scanner section

<7145>

7322sf006

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-18

<7235/7228/7222>

SAFETY AND IMPORTANT WARNING ITEMS

7322sf007e

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-19

SAFETY AND IMPORTANT WARNING ITEMS

[2] FS-113

CAUTION

This area is very hot. To avoid getting burned DO NOT TOUCH.

CAUTION

To avoid injury, DO NOT put your hand on the top of the printed sheets. Be sure to hold both sides of the printed sheets when removing them, and DO NOT leave your hand on the printed sheets while the primary (main) tray goes up.

(Inside of the Finisher)

FS-113 Finisher

7322sf009

[3] FS-114

FS-114 Finisher

7322sf010

CAUTION

You may be burned or injured if you touch any area that you are advised by any caution label to keep your-

self away from.

Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot

be read, contact our Service Office.

S-20

List of major differences between the 7145, 7235, 7228 and 7222

Classification 7145 7235 7228 7222 Reason

Warmup time

First copy out time

(8.5x11)

Continuous copy

speed (8.5x11)

Maximum E-RDH

memory

Less than

30 sec.

Less than

3.8 sec.

Less than

4.3 sec.

Less than 19 sec.

45 sheets/min. 35 sheets/min. 28 sheets/min.

320MB

DF Standard Optional

ADU Standard

Paper exit tray

Optional

Standard

23.2in (W)

Machine dimensions

(with DF and DB)

Specifications

Maintenance

Developer

Toner

Materials

Drum

23.4in (D)

42.6in (H)

Once every

120,000 copies

Exclusively

for 7145

Exclusively

for 7145

Exclusively

for 7145

23.4in (W) x 25.8in (D) x 44.6in (H)

Once every 100,000 copies

Exclusively for 7235/7228/7222

Exclusively for

7235 (Common

to 7135)

Exclusively for 7228/7222

(Common to 7022/7120/7135)

Exclusively for 7235/7228/7222

Flywheel f 103mm f 132mm

Developing sleeve

drive

Developing

motor

Main motor

Less than 4.9 sec.

22 sheets/min.

Change of

specifications

Vibration insulator Not provided Provided Not provided

Drive section

Scanner drive board Provided Not provided

section

Scanner

Laser 2 beams 1 beam

Number of rotations

of polygon motor

Polygon cooling Not provided Provided Not provided

Write section

27,165rpm 38,976rpm 33,070rpm

Change of

CPM

Change of

specifications

List of major differences between the 7145, 7235, 7228 and 7222

Classification 7145 7235 7228 7222 Reason

Exclusively

for 7145

Exclusively for 7235/7228/7222

Fixing

section

Fixing unit

Decurler roller Provided Not provided

ADU drive board Not provided Provided

ADU/Paper

exit section

Developing motor Provided Not provided

ADU motor Provided

Fixing cooling fan Provided Not provided

Internal cooling fan/2 Provided Not provided

Polygon cooling fan Not provided Provided Not provided

ADU gate solenoid Provided

Electrical parts

ADU sensor Provided

Timing sensor/U Provided Not provided

Timing sensor/L Provided Not provided

Overall control

Image control

Control

Exclusively

for 7145

Exclusively

for 7235

Exclusively

for 7228

Exclusively

Change of

specifications

for 7222

+ 418 hidden pages