Samsung SCX4521F - B/W Laser - All-in-One Bedienungsanleitung

Manual

SERVICE

DIGITAL LASER MFP

SCX-4521F Series

SCX-4521F/TEC

Basic Model :SCX-4521F

DIGITAL LASER MFP The keynote of Product

- Machine Life: 50,000Pages

- Cpu: Chorus2

- Device Memory: 16MB

- Resolution: 600*600dpi

- Option: N/A

- Printing Speed: 22ppm/LTR,20ppm/A4

- Print Memory: 10MB

- Print Language: SPL

- Path Type: C-Path

- Cassette Capa.: 150sheets

- Outlet Stacking Capa.: 50sheets

- Toner Cartridge: initial(1K), sales(3K)

- ADF Capacity: 30sheets

- Scan Method: 600 dpi Color CIS

- Copy Speed: SDMC: 22Cpm/Ltr,

MDMC: 7Cpm/Ltr

- Interface: USB1.1, IEEE1284

SCX-4521F Series

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Contents

1. Precautions

1.1 Safety Warning 1-1

1.2 Safety Caution 1-2

1.3 ESD Precautions 1-4

2. Product Specification

2.1 Product Overview 2-1

2.2 Specifications 2-1

2.3 Model Comparison Table 2-5

3. System Overview

3.1 System Outline 3-1

3.2 H/W Structure and Descriptions 3-7

3.3 S/W Structure and Descriptions 3-19

3.4 Initial Product Installation 3-24

4. Alignment and Adjustments

4.1 Sample Pattern 4-1

4.2 Control Panel 4-2

4.3 Consumables and Replacement Parts 4-4

4.4 LED Status Error Messages 4-4

4.5 Periodic Defective Image 4-5

4.6 How to use DCU 4-6

4.7 Paper Path 4-11

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Continued

5. Disassembly and Reassembly

5.1 General Precautions on Disassembly 5-1

5.2 Disassembly and Reassembly 5-2

6. Troubleshooting

6.1 Checking Symptoms 6-1

6.2 Bad discharge 6-4

6.3 Malfunction 6-8

6.4 Bad software environment 6-13

6.5 Bad Image 6-17

7. Exploded Views & Parts List

7.1 Exploded Views and Parts List 7-1

8. Block diagram

8.1 System Block Diagram 8-1

8.2 System Timing Chart 8-2

9. Connection Diagram

9.1 Connection Diagram 9-1

10. Schematic Diagram

10.1 Main Board 10-1

10.2 Connector Circuit Diagram 10-5

10.3 SMPS Circuit Diagram 10-6

10.4 HVPS Circuit Diagram 10-7

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Continued

11. Reference Information

11.1 Troubleshooting Tools 11-1

11.2 Acronyms and Abbreviations 11-2

11.3 Selecting printer locations 11-4

11.4 Sample Tests Patterns 11-5

12. Circuit Description

12.1 Engine Controller 12-1

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Samsung Electronics

Service Manual

Troubleshooting

6-2

6.1.1 Basic Check List

1. Check the Power.

• Does "Warming Up" appear on the display?

--> If not check power cable, switch or SMPS.

--> Does the wall socket work?

• Do the Motors or other components initialize (listen for main motor, fan and LSU sounds)?

--> If not or there are none of the normal startup sounds check cable, switch or SMPS.

--> Does the wall socket work?

2. Check the LCD Panel.

• Is there any display at all?

--> If not check power cable, switch or SMPS.

--> Does the wall socket work?

• Is the display a meaningful message care there any broken or badly formed characters?

--> Check the main PBA and cable harness.

• Is the message on the LCD Panel a standard error message?

--> Refer to section 4.3

3. Check the Paper Path

• Is there a Paper Jam?

--> Remove any paper fragments caught in the paper path.

• Paper Jam occurs repeatedly at a specific point in the Paper Path

--> Open the fuser cover, Jam clear.

--> Dismantle the machine and carefully inspect the region where the jam occurs.

(Especially, check if paper fragments are caught in the Fuser

4. Print the Information Page (Configuration).

• Try printing a test page from a computer.

--> If there is an error check cables and driver installation.

5. Check the Print Quality.

•Is there are a Print Quality Problem?

--> Refer to section 6.5

6. Check consumables (toner etc.).

•Using the keys print the Test Pattern.

--> Expected life of various consumable parts, compare this with the figures printed and replace as required

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Exploded Views & Parts List

Samsung Electronics Service Manual

7-1

7.1 Main Exploded Views

7.2 ADF Assembly Exploded Views

7.3 Platen Cover Assembly Exploded Views

7.4 ADF Platen Assembly Exploded Views

7.5 OPE Unit Exploded Views

7.6 Drive Unit Exploded Views

7.7 Main Frame Assembly Exploded Views

7.8 MP Tray Assembly Exploded Views

7.9 Fuser Unit Exploded Views

7.10 Paper Path Assembly Exploded Views

7. Exploded Views and Parts List (SCX-4521F/TEC)

Contents

Part Number & Description format.

There are two types of Part number format.

Part numbers and descriptions are defined according to a company standard. The information below

will help you to understand the part number format and assist when ordering spare parts.

This format is used throughout Samsung on all product ranges.

Typically it is used for small components and electronic parts.

This format is controlled by individual Samsung Divisions and is used on specific

products, typically for mechanical parts. Type 2 format part numbers fall into 2 categories:

Assemblies consisting of 2 or more parts. Also used for Service manuals,

user guides and diagrams.

Ass’y parts and A/S privately used Parts can be distinguished by the part Code and Description.

They are always Type 2 format. The 2 leading characters indicate private or assembly parts.

number letter

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SAMSUNG Laser SCX-4321 SCX-4521F Series sm_05.pdf

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