Samsung ProXpress M3320ND/M3820D/M3820ND/M3820DW/M4020ND/M4020NX/M3325ND/M3825D/M3825ND/M3825DW/M4025ND/M4025NX Service Manual


Accurate, clear and concise text, combined with detailed illustrations, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present service manual Samsung ProXpress M3320ND/M3820D/M3820ND/M3820DW/M4020ND/M4020NX/M3325ND/M3825D/M3825ND/M3825DW/M4025ND/M4025NX contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

1. PREACAUTIONS
1.1. Safety warning
1.2. Caution for safety
1.2.1. Toxic material
1.2.2. Electric shock and fire safety precautions
1.2.3. Handling precautions
1.2.4. Assembly and Disassembly precautions
1.2.5. Disregarding this warning may cause bodily injury
1.3. ESD precautions

2. PRPDUCT SPECIFICATIONS
2.1. Specifications
2.1.1. Product Overview
2.1.2. Specifications
2.1.2.1. General
2.1.2.2. Print
2.1.2.3. Controller and Software
2.1.2.4. Paper Handling
2.1.2.5. Consumables
2.1.2.6. Maintenance Part
2.2. Product Description
2.2.1. Front View
2.2.2. Rear View
2.2.3. Paper Path
2.2.4. System layout
2.2.4.1. Feeding Part
2.2.4.2. Image Creation
2.2.4.3. Fuser unit
2.2.4.4. LSU (Laser Scanning Unit)
2.2.4.5. Drive Unit
2.2.5. Hardware configuration
2.2.5.1. Main Controller (M332x_M382x_M402xND)
2.2.5.2. Main Controller (M402xNX)
2.2.5.3. OPE Controller
2.2.5.4. SO-DIMM PBA
2.2.5.5. WLAN(M382xDW model only)
2.2.5.6. SCF PBA – Optional
2.2.5.7. CRUM PBA
2.2.5.8. SMPS Board
2.2.5.9. HVPS board
2.2.6. Engine Firmware Control Algorithm
2.2.6.1. Feeding
2.2.6.2. Transfer
2.2.6.3. Fusing
2.2.6.4. LSU
2.2.7. Software Descriptions
2.2.7.1. Software system overview
2.2.7.2. Architecture
2.2.7.3. Data and Control Flow

3. DISASSEMBLY AND REASSEMBLY
3.1. Precautions when replacing parts
3.1.1. Precautions when assembling and disassembling
3.1.2. Precautions when handling PBA
3.1.3. Releasing Plastic Latches
3.2. Screws used in the printer
3.3. Replacing the Main SVC parts
3.3.1. Left and Right Cover
3.3.2. Front Cover
3.3.3. Rear and Top Cover
3.3.4. Main Board
3.3.5. HVPS board
3.3.6. SMPS Board
3.3.7. Laser Scanning Unit (LSU)
3.3.8. Fuser Unit
3.3.9. Main Drive Unit
3.3.10. Feed Drive Unit
3.3.11. Pick Up_Regi_MP Clutch
3.3.12. Pick-Up Roller
3.3.13. Transfer Roller
3.3.14. OPE Board
3.3.15. MP Unit
3.3.16. Bin-full sensor
3.3.17. Regi_Feed_Empty Sensor
3.3.18. Reverse Roller
3.3.19. SCF(Second Cassette Feeder) Unit
3.3.19.1. SCF Right Cover
3.3.19.2. SCF Main Board
3.3.19.3. SCF Main Motor
3.3.19.4. SCF Clutch
3.3.19.5. SCF pick up_forward roller
3.3.19.6. SCF Reverse Roller
3.3.19.7. SCF Main Drive Unit
3.3.19.8. SCF Lift Assy
3.3.19.9. SCF Pick-Up Unit
3.3.19.10. SCF Pick-Up_Empty_Feed Sensor

4. TROUBLESHOOTING
4.1. Alignment and Adjustments
4.1.1. Control Panel
4.1.2. Understanding The Status LED
4.1.3. Clearing paper jams
4.1.4. Useful menu item for service
4.1.5. Periodic Defective Image
4.1.6. Useful management tools
4.1.6.1. Using Samsung Easy Printer Manager
4.1.6.2. Using Samsung Printer Status (Windows only)
4.1.6.3. Using SyncThru Web Service (SWS)
4.1.7. Updating Firmware
4.1.7.1. Update the firmware by using the USB port
4.1.7.2. Update the firmware by using the network
4.1.8. Service Mode
4.2. Troubleshooting
4.2.1. Procedure of checking the symptoms
4.2.1.1. Basic Check List
4.2.2. Error Code and Troubleshooting
4.2.3. Image quality problem
4.2.4. Other errors

5. SYSTEM DIAGRAM
5.1. Block Diagram (ProXpress M332x_382x_402xND)
5.2. Block Diagram (ProXpress M402xNX)
5.3. Connection Diagram (ProXpress M332x_M382x_M402xND)
5.4. Connection Diagram (ProXpress M402xNX)

6. REFERENCE INFORMATION
6.1. Tool for Troubleshooting
6.2. Glossary
6.3. The Sample Pattern for the Test
6.4. Model Name and Code
6.5. Revision History

Number of pages: 155.