Samsung SCX-4021S SCX-4321NS SCX-4521FS SCX-4521NS SCX-4521HS SCX-4650 SCX-4650N SCX-4655F SCX-4655FN SCX-4655HN Service Manual

Service Manual Samsung SCX-4021S SCX-4321NS SCX-4521FS SCX-4521NS SCX-4521HS SCX-4650 SCX-4650N SCX-4655F SCX-4655FN SCX-4655HN;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Samsung.
You can print, zoom or read any diagram, picture or page from this Service Manual. 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-4021S SCX-4321NS SCX-4521FS SCX-4521NS SCX-4521HS SCX-4650 SCX-4650N SCX-4655F SCX-4655FN SCX-4655HN. You can find easily everything what do you need.
To see what contain, please read table of contents:

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

2.1. Product Specification
2.1.1. Product Overview
2.1.2. Specifications General Print Engine Copier Scan Specification Fax (SCX-465xF_465xFN_465xHN_4521FS_4521NS_4521HS only) Controller and Software Paper Handling Supplies Maintenance Part Reliability and Service Environment
2.1.3. Model Comparison Table
2.2. System Overview
2.2.1. Front View
2.2.2. Rear View
2.2.3. Paper Path
2.2.4. System Layout Feeding Part Transfer Roller Drive Unit Fuser Unit LSU (Laser Scanner Unit) Toner Cartridge
2.2.5. Hardware configuration Main board OPE board Fax board (4-in-1 model only) SMPS/HVPS board Electrical Parts Location
2.2.6. Engine F/W Contol Algorithm Feeding Transfer Fusing LSU
2.2.7. Software Descriptions Software system overview Architecture Data and Control Flow

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. Cover
3.3.2. OPE Unit
3.3.3. Scanner Unit
3.3.4. ADF unit
3.3.5. CIS (Contact Image Sensor) Unit
3.3.6. Middle Cover
3.3.7. Main board
3.3.8. Fax board
3.3.9. SMPS_HVPS board
3.3.10. Fuser Unit
3.3.11. Transfer roller
3.3.12. LSU
3.3.13. Feed Sensor PBA
3.3.14. Main Drive Unit
3.3.15. Pick Up Solenoid
3.3.16. Pick up roller

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

5.1. Block Diagram
5.2. Connection Diagram

6.1. Tool for Troubleshooting
6.2. Glossary
6.3. The Sample Pattern for the Test

SCX4021S SCX4321NS SCX4521FS SCX4521NS SCX4521HS SCX4650 SCX4650N SCX4655F SCX4655FN SCX4655HN SCX 4021S SCX 4321NS SCX 4521FS SCX 4521NS SCX 4521HS SCX 4650 SCX 4650N SCX 4655F SCX 4655FN SCX 4655HN HN NS S FS