Samsung MultiXpress K7600GX/K7500GX/K7400GX/K7600LX/K7500LX/K7400LX Service Manual and Parts Catalog

Accurate 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 and parts catalog Samsung MultiXpress K7600GX/K7500GX/K7400GX/K7600LX/K7500LX/K7400LX Service Manual and Parts List Manual 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:

1.1. 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 Overview
2.2. Specifications
2.2.1. General Specification
2.2.2. Print Specifications
2.2.3. Scan specification
2.2.4. Copy specification
2.2.5. Fax specification
2.2.6. Paper Handling specification
2.2.7. Network and Software specification
2.2.8. Supplies
2.2.9. Maintenance Parts
2.2.10. Option
2.3. Machine External View
2.4. Feeding System
2.4.1. Feeding System Overview
2.4.2. Main Components and functions
2.4.3. Cassette (Tray)
2.4.4. Pick-Up Unit
2.4.5. Registration Unit
2.4.6. MPF(Multi-Purpose Feeder) Unit
2.5. Image Creation
2.5.1. Printing process overview
2.5.2. Imaging Unit Drum Unit Overview Drum drive Deve(Development) Unit
2.5.3. Toner Cartridge
2.5.4. PTB (Paper Transfer Belt) Unit PTB unit overview Transfer belt drive Cleaning Blade
2.6. Fuser Unit
2.6.1. Fuser Unit Overview
2.6.2. Fuser Unit drive
2.6.3. Fuser unit temperature control
2.7. Laser Scanning Unit (LSU)
2.7.1. LSU overview
2.7.2. Laser Scanning Optical path
2.7.3. Laser synchronizing detectors
2.8. Drive System
2.8.1. Drive Motors
2.8.2. Main Drive Unit(OPC_Deve_ITB)
2.8.3. Pick-Up and CST Lift drive
2.8.4. Feed Drive
2.8.5. Regi Drive
2.8.6. Fuser(Release)_Exit Drive
2.8.7. Toner Supply Drive
2.8.8. Toner-Reservoir Drive
2.8.9. CST Lock Drive
2.9. Scanner System
2.9.1. Scanner System Overview
2.9.2. Scanning System Components
2.9.3. Caution for moving the scanner
2.10. Dual Scan Document Feeder(DSDF) for LX model
2.10.1. DSDF overview
2.10.2. Electrical parts location
2.10.3. DSDF Drive System DSDF Original Pick-Up Assembly DSDF Original Regi. Drive Original Scanning and Feed-Out Drive
2.11. Dual Scan Document Feeder(DSDF) for GX model
2.11.1. DSDF overview
2.11.2. Electrical parts location
2.11.3. DSDF Drive System DSDF Original Pick-Up Assembly DSDF Original Pre-Regi Assembly DSDF Original Regi Assembly DSDF Original Scanning Drive Assembly DSDF Original Exit Assembly DSDF Original Lifting Assembly DSDF Original Pick-up_Reverse roller Release Assembly DSDF Scan in Roller Release Assembly
2.12. Hardware Configuration
2.12.1. Main Controller
2.12.2. USB HUB PBA
2.12.3. SMPS (Switching Mode Power Supply) PBA (Type5)
2.12.4. SMPS (Switching Mode Power Supply) PBA (Type3)
2.12.5. SMPS (Switching Mode Power Supply) PBA (Type4)
2.12.6. Fuser Drive Board (FDB)
2.12.7. HVPS (High Voltage Power Supply) board
2.12.8. Eraser PBA
2.12.9. Fuser PBA
2.12.10. Waste Sensor PBA
2.12.11. Paper Size sensor PBA
2.12.12. OPE Unit
2.12.13. DSDF PBA
2.12.14. Scan Joint PBA
2.12.15. CCDM PBA
2.12.16. WLED IF PBA
2.12.17. WLED PBA
2.13. Double Cassette Feeder(DCF) Unit
2.14. High Capacity Feeder(HCF) Unit
2.15. High Capacity Feeder Side Unit (Large Cassette Tray Unit)

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. Maintenance
3.2.1. Machine Cleaning for maintenance Cleaning the scan glass Cleaning the DSDF white bar_CIS Cleaning the paper dust stick
3.2.2. Replacing the maintenance part Development(Deve) unit Fuser Unit Paper Transfer Belt Pick-Up_Separation_Forward roller MP Pick Up_Reverse_Forward roller DSDF Pick-up roller Assy (LX model) DSDF reverse roller (LX model) DSDF Pick-up roller Assy (GX model) DSDF reverse roller Assy (GX model)
3.3. Replacing the main SVC part
3.3.1. Left Cover
3.3.2. Rear Cover
3.3.3. LSU
3.3.4. Temperature_Humidity sensor
3.3.5. Reservoir Assy
3.3.6. OPE Unit
3.3.7. Main board
3.3.8. HVPS board
3.3.9. SMPS board SMPS board 1 SMPS board 2 SMPS board 3
3.3.10. FDB (Fuser Drive Board)
3.3.11. SMPS Fan
3.3.12. Main Drive Unit
3.3.13. Inductor unit
3.3.14. Auto-Closing unit
3.3.15. Pick-up Drive unit 1
3.3.16. Pick-up Drive unit 2
3.3.17. Regi Drive Unit
3.3.18. Feed Drive Unit
3.3.19. Fuser Fan
3.3.20. Fuser_Exit Drive unit
3.3.21. Side Door open sensor
3.3.22. Deve Fan
3.3.23. Auto Size sensor
3.3.24. Inner cover
3.3.25. Front Cover Open sensor
3.3.26. Waste Toner Container sensor
3.3.27. HDD (Hard Disk Drive)
3.3.28. High Voltage Terminal
3.3.29. Side Unit Fuser-Out Sensor Feed 2 sensor MP Unit MP empty sensor MP paper length sensor MP solenoid
3.3.30. Pick-Up Unit 2 Pick up Lifting sensor and Empty sensor Pre-Feed sensor 2
3.3.31. Pick-Up Unit 1 Pick-Up Lifting sensor and Empty sensor Pre-Feed sensor 1
3.3.32. Regi Unit Regi sensor
3.3.33. Exit Unit Return sensor Duplex 1 sensor Exit 1 Bin Full sensor Exit Gate Solenoid
3.3.34. DSDF Unit for LX model DSDF PBA DSDF main motor DSDF paper length sensor
3.3.35. DSDF Unit for GX model DSDF PBA DSDF Stacker Sensor
3.3.36. Scanner Unit(Platen Unit) Scan Glass LED Lamp Module Scanner Imaging Unit Scan Joint PBA APS Sensor
3.3.37. Double Cassette Feeder(DCF) Unit DCF Feed Motor DCF Pick-up Motor DCF PBA
3.3.38. High Capacity Feeder(HCF) Unit HCF Feed Motor HCF Pick-up Motor HCF PBA HCF Lift-up Motor HCF Shaft Motor
3.3.39. High Capacity Feeder Side Unit (Large Cassette Tray Unit) LCT Feed Motor LCT Pick-up Motor LCT PBA LCT Lift-up Motor

4.1. Control panel
4.1.1. Display screen and useful buttons Menu navigation Home Screen Overview Customizing your home screen Notification Bar
4.2. Understanding the LEDs
4.3. Updating Firmware
4.3.1. Updating from the Printer Control Panel
4.3.2. Updating from the Network
4.4. JAM removal
4.4.1. Clearing original document jams
4.4.2. Clearing paper jams
4.5. Service Mode (Tech Mode)
4.5.1. Entering the Service Mode
4.5.2. Service Mode Menu Tree
4.5.3. Information General Supply Status Software Version Service Hours Fault Log Print Reports Export Reports
4.5.4. Maintenance Counts Fault Count Jam Count Part Replacement Count
4.5.5. Diagnostics Engine Diagnostics Fax Diagnostics Scanner Diagnostics Adjustment Image Management Print Test Patterns
4.5.6. Service Functions Main Memory Clear Hard Disk Maintenance Count Setting of Large Page Network Port Debug Log Capture Log Network Packet Capture System Recovery TR Control Mode Clear System Cache Hibernation Paper Low Warning Message Part Replacement Alert FDI EIUL (End of Image Unit Life) SFE (Special Feature Enablement) Dealer ID Envelope Rotate Drain
4.6. Error Code and Troubleshooting
4.6.1. 11-2Txx (Paper mismatch error)
4.6.2. 61-1xxx (System Error)
4.6.3. A1-xxxx (Motor error)
4.6.4. A2-xxxx (Fan error)
4.6.5. A3-xxxx (Sensor error)
4.6.6. C1-xxxx (Toner cartridge error)
4.6.7. C3-xxxx (Drum unit error)
4.6.8. C6-xxxx (Fuser unit error)
4.6.9. C7-xxxx (Waste toner container error)
4.6.10. C8-xxxx (Developer error)
4.6.11. C9-xxxx (Transfer Belt error)
4.6.12. H1-xxxx (Double Cassette Feeder Unit Error)
4.6.13. H1-xxxx (High Capacity Feeder Unit Error)
4.6.14. H1-xxxx (High Capacity Feeder Side Unit(LCT Unit) Error)
4.6.15. H2-xxxx (Finisher error)
4.6.16. Mx-xxxx (Jam error)
4.6.17. Mx-xxxx (Tray not install_Paper empty_Outbin full)
4.6.18. Sx-xxxx (System error)
4.6.19. U1-xxxx (Fuser error)
4.6.20. U2-xxxx (LSU error)
4.6.21. U3-xxxx (Document Feeder error_DSDF for LX model)
4.6.22. U3-xxxx (Document Feeder error_DSDF for GX model)
4.7. Image quality problems and solutions
4.7.1. Vertical Black Lines
4.7.2. Vertical Light or White Lines
4.7.3. Horizontal periodic Black Band or Dot
4.7.4. Horizontal Periodic Light/Dark Lines, Dots
4.7.5. Blurred image
4.7.6. Foggy image
4.7.7. Light image
4.7.8. Uneven pitch and jitter image
4.7.9. Skewed image
4.7.10. Poor fusing performance
4.7.11. Stain on the paper back side
4.7.12. Setting Standard Tone
4.8. Other Errors
4.8.1. Image system problem
4.8.2. Fuser problem
4.8.3. Scanner and Document Feeder problem
4.8.4. Drive unit problem
4.8.5. Feeding system problem
4.8.6. LSU problem
4.8.7. Electrical circuit problem
4.9. Adjusting the ADF(DSDF) skew
4.10. SPDS (Smart Printer Diagnostic System) Application
4.10.1. SPDS App Installation and Login SPDS App Installation User Registration Request Change_Reset Password Login Select Connect Method Consent to customer information
4.10.2. SPDS Menu Introduction Error Mode Diagnosis Mode Test Mode Information Mode Service Mode
4.10.3. Corrective Upload
4.10.4. Exceptions

5.1. Connection Diagram (FUSER_EXIT_DUPLEX_TONER)
5.2. Connection Diagram (Scanner)
5.3. Connection Diagram (LSU_OPE_USB)
5.4. Connection Diagram (Side_MP_Feed_Regi_Pick-Up)
5.5. Connection Diagram (OPC_WTB_CST Lock)
5.6. Connection Diagram (HVPS_SMPS_FDB)

6.1. Tools for Troubleshooting
6.2. Glossary
6.3. Model Name and Code
6.4. Document Revision List

& Parts Catalog

Samsung MultiXpress SL SL-K7600GX SL-K7500GX SL-K7400GX SL-K7600LX SL-K7500LX SL-K7400LX SLK7600GX SLK7500GX SLK7400GX SLK7600LX SLK7500LX SLK7400LX