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DIGITAL LASER PRINT

CONTENTS

[The keynote of Product]

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

- High speed Laser Printer:

Up to 43 ppm in A4 (45 ppm in Letter),
Duplex: 29 ipm (A4); 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 LAN, 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

Basic Model : ML-4550

ML-4551

NR/XEV

fineline6

Summary of Contents for ML-4551NR

Page 1: ...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 LAN 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 Basic Model ML 4550 ML ...

Page 2: ...y of Product 2 1 2 2 1 Printer Components 2 7 2 2 2 System Layout 2 13 2 2 3 Engine H W Specifications 2 17 3 Disassembly and Reassembly 3 1 General Precautions on Disassembly 3 1 3 2 Transfer Roller 3 2 3 3 MPF Ass y 3 3 3 4 Holder Pad Ass y 3 4 3 5 Retard Ass y 3 5 3 6 Feed2 Idle Unit 3 6 3 7 Cover Right 3 7 3 8 Main PBA 3 8 3 9 Main Drive Ass y 3 9 3 10 DEVE Drive Ass y 3 10 3 11 Connector PBA ...

Page 3: ...oting 4 1 Alignment and Adjustments 4 1 4 1 1 How to use EDC Engine Diagnostic Control Mode 4 1 4 1 2 Paper Path 4 10 4 1 3 Sample Pattern 4 17 4 1 4 Periodic Defective Image 4 18 4 1 5 Error Messages 4 19 4 2 Troubleshooting 4 22 4 2 1 Procedure of Checking the Symptoms 4 22 4 2 2 The cause and solution of Bad image 4 23 4 2 3 The cause and solution of the bad discharge 4 39 4 2 4 The cause and s...

Page 4: ...e Motor Assembly 5 20 5 8 Exit Sorenoid Assembly 5 22 5 9 Cassette Assembly 5 24 5 10 Duplex Unit 5 26 5 11 SCF Unit 5 28 6 System Diagram 6 1 Block Diagram 6 1 6 2 SCX 4200 Connection Diagram 6 3 7 Reference Information 7 1 Troubleshooting Tools 7 1 7 2 Acronyms and Abbreviations 7 2 7 3 Select a location for the printer 7 4 7 4 Sample Tests Patterns 7 5 Continued fineline6 ...

Page 5: ...ers 4 1 1 2 Entrance method for EDC In order to enter the EDC mode the entering method should be special because this mode is developed for engineers related not for end users Entering the mode the message COMPONENT TEST Press Menu Key is displayed In this mode an engineer should press the Menu Key to search each function he would like to test Usage 1 Check printer is powered on 2 Wait until the p...

Page 6: ...DIGITAL LASER PRINT The keynote of Product The keynote of Product Series Model ML 4550 4551N 4551ND High speed Laser Printer Up to 43 ppm in A4 45 ppm in Letter Duplex 29 ipm A4 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 t...

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