Service Manual & Parts List Samsung SCX-4321 Series, SCX-4321XEV;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Samsung SCX-4321 Series, SCX-4321XEV.
You can print, zoom or read any diagram, picture or page from this Service Manual & Parts List. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Samsung SCX-4321 Series, SCX-4321XEV. You can find easily everything what do you need.
To see what contain, please read table of contents:

1. PRECAUTIONS
1.1 Safety Warning
1.2 Safety Caution
1.3 ESD Precautions

2. PRODUCT SPECIFICATION
2.1 Product Overview
2.2 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

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 INFORMATIONS
11.1 Troubleshooting Tools
11.2 Acronyms and Abbreviations
11.3 Selecting printer locations
11.4 Sample Tests Patterns

12. CIRCUIT DESCRIPTIONS
12.1 Engine Controller

Numbers of pages: 173.