Contents:
1. Precautions;
1.1 Safety Warning;
1.2 Safety Caution;
1.3 ESD Precautions;
2. Product Specification;
2.1 Product Overview;
2.2 Samsung SCX 4521f. Specifications;
2.3 Model Comparison Table;
3. System Overview;
3.1 System Outline;
3.2 H/W Structure and Descriptions;
3.3 S/W Structure and Descriptions;
3.4 Initial Product Installation;
4. Alignment and Adjustments;
4.1 Sample Pattern;
4.2 Control Panel;
4.3 Consumables and Replacement Parts;
4.4 LED Status Error Messages;
4.5 Periodic Defective Image;
4.6 How to use DCU;
4.7 Paper Path;
5. Disassembly and Reassembly;
5.1 General Precautions on Disassembly;
5.2 Disassembly and Reassembly of the Samsung SCX 4521f;
6. Troubleshooting;
6.1 Checking Symptoms;
6.2 Bad discharge;
6.3 Malfunction;
6.4 Bad software environment;
6.5 Bad Image;
7. Exploded Views & Parts List;
7.1 Exploded Views and Parts List;
8. Block diagram;
8.1 System Block Diagram;
8.2 System Timing Chart;
9. Connection Diagram;
9.1 Connection Diagram;
10. Schematic Diagram;
10.1 Main Board;
10.2 Connector Circuit Diagram;
10.3 SMPS Circuit Diagram;
10.4 HVPS Circuit Diagram;
11. Reference Information
11.1 Troubleshooting Tools for Samsung SCX 4521f;
11.2 Acronyms and Abbreviations;
11.3 Selecting printer locations;
11.4 Sample Tests Patterns;
Download Samsung SCX 4521f Service Manual