Samsung ML-4550 Series Bedienungsanleitung

DIGITAL LASER PRINT CONTENTS

[The keynote of Product]

- Series Model: ML-4550 / 4551N / 4551ND

- High speed Laser Printer:

Up to 43 ppm in 4 (45 ppm in Letter),

Duplex: 29 ipm ( 4); 30 ipm (Letter)

- Resolution: Up to 1200 x 1200 dpi

- Marvell 500Mhz

- Memory: 128 MB (Max. 512 MB)

128, or 256 MB optional memory available.

Use only the Samsung-approved DIMM.

128 MB: ML-MEM150, 256 MB: ML-MEM160

- Option:

ML-4550:500-sheet trays, ethernet 10/100 Base

TX wired L N, ethernet 10/100 Base

hard disk, duplex unit, DIMM

- Toner cartridge:

Starter: 10K or 20K pages

Consumable: 10K or 20K pages

- Duty cycle: Monthly Up to 150,000 pages

Manual

SERVICE

DIGITAL LASER PRINT

ML-4550 Series

ML-4550/XEU

Basic Model :ML-4550

ELECTRONICS

Samsung Electronics Co.,Ltd. Mar. 2006

Printed in Korea.

VERSION NO. : 1.00 CODE : JC-0168F

* This service manual is a property of Samsung Electronics Co., Ltd.

Any unauthorized use of Manual can e punished under applica le

international and/or domestic law.

Contents

1 Precautions

1.1 Safety Warning 1-1

1.2 Caution for safety 1-2

1.3 ESD Precautions 1-5

2 Product Specifications

2.1 Product Overview 2-1

2.2 Specifications 2-1

2.3 Model Comparison Table 2-6

3 Summary of Product

3.1 Printer Components 3-1

3.2 System Layout 3-7

3.3 Engine H/W Specifications 3-11

4 Alignment and Adjustments

4.1 How to use EDC (Engine Diagnostic Control) Mode 4-1

4.2 Paper Path 4-10

4.3 Sample Pattern 4-17

4.4 Periodic Defective Image 4-18

4.5 Error Messages 4-19

Continue

5 Disassembly and Reassembly

5.1 General Precautions on Disassembly 5-1

5.2 Transfer Roller 5-2

5.3 MPF ss’y 5-3

5.4 Holder Pad ss'y 5-4

5.5 Retard ss'y 5-5

5.6 Feed2 Idle Unit 5-6

5.7 Cover Right 5-7

5.8 Main PB 5-8

5.9 Main Drive ss'y 5-9

5.10 DEVE Drive ss'y 5-10

5.11 Connector PB 5-11

5.12 Solenoid 5-12

5.13 Rear Cover 5-13

5.14 Cover Left 5-14

5.15 Top Cover 5-15

5.16 Open Cover 5-16

5.17 Inner Cover 5-17

5.18 Fuser ss'y 5-18

5.19 Duplex Solenoid ss'y 5-20

5.20 Exit Roller 5-21

5.21 LSU 5-22

5.22 DC Fan 5-23

5.23 Toner Sensor PB 5-24

5.24 REGI ss'y 5-25

5.25 MP Pick Up ss'y 5-26

5.26 Pick Up & Feed2 ssy 5-28

5.27 Engine Shield 5-31

Continue

6 Troubleshooting

6.1 The cause and solution of Bad image 6-1

6.2 The cause and solution of the bad discharge 6-8

6.3 The cause and solution of the malfunction 6-13

6.4 Maintaining the toner cartridge 6-17

6.5 The cause and solutions of bad environment of the software 6-22

7 Exploded Views & Parts List

7.1 Main ssembly 7-2

7.2 Cover ssembly 7-3

7.3 Frame ssembly 7-4

7.4 Fuser Unit 7-6

7.5 REGI ssembly 7-7

7.6 Main Motor ssembly 7-8

7.7 Deve Motor ssembly 7-9

7.8 Exit Sorenoid ssembly 7-10

7.9 Cassette ssembly 7-11

7.10 Duplex Unit 7-12

7.11 SCF Unit 7-13

8 Block diagram

8.1 System Block Diagram 8-1

9 Connection Diagram

9.1 Connection Diagram 9-1

Continue

10 Schematic Diagram

10.1 Main Board 10-1

10.2 DIMM board 10-17

10.3 CRUM board 10-19

10.4 EMPTY board 10-20

10.5 HVPS 10-21

10.6 Panel 10-25

10.7 SCF 10-26

10.8 Toner sensor 10-29

10.9 HDD.eps 10-30

11 Reference Information

11.1 Troubleshooting Tools 11-1

11.2 cronyms and bbreviations 11-2

11.3 Select a location for the printer 11-4

11.4 Sample Tests Patterns 11-5

Exploded Views & Parts List

Service Manual

7-1

Samsung Electronics

7.1 Main Assembly p.7-2

7.2 Cover Assembly p.7-3

7.3 Frame Assembly p.7-4

7.4 Fuser Unit p.7-6

7.5 REGI Assembly p.7-7

7.6 Main Motor Assembly p.7-8

7.7 Deve Motor Assembly p.7-9

7.8 Exit Sorenoid Assembly p.7-10

7.9 Cassette Assembly p.7-11

7.10 Duplex Unit p.7-12

7.11 SCF Unit p.7-13

7. Exploded Views and Parts List (ML-4550/XEU)

Contents

Service Manual

Exploded Views & Parts List

7-2

Samsung Electronics

7.1 Main Assembly

3-1

3-2

3-3

3-5

3-4

3-6

4-1

4-2

8-1

8-2

8-3

8-4

9-1

9-2

9-3

20-1

20-2

20-3

21-1

21-2

21-3 22

SCF

39-2

39-1

39(Network only)

Exploded Views & Parts List

Service Manual

7-3

Samsung Electronics

7.2 Cover Assembly

6-1

6-10

6-2

6-3

6-5

6-4

6-6

6-7

6-8

6-9

7 (N/A : ML-4551ND)

7-2

7-1

1-12

1-13

1-10

1-11

1-9

1-17

1-5

1-2

1-3 1-8

1-7

1-6

1-4

1-16

1-14

1-1

1-15

1-18

3-3

3-1

3-2

Service Manual

Exploded Views & Parts List

7-4

Samsung Electronics

7.3 Frame Assembly(1/2)

2-1

2-2

2-4

2-3

2-4-1

2-4-2

2-4-3

3-1

3-2

3-3

3-4

3-5

3-6

3-7

4-1

4-2

4-3

4-4

4-5

4-6

4-7 4-8

5-1

5-2

5-3

5-4

14-1

14-2

14-3

20 21

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