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Samsung MultiXpress K4 Series - User Manual

Samsung MultiXpress K4 Series
526 pages
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A3MonoCopier
MultiXpressK4series
SL-K4350LX/SL-K4300LX/
SL-K4250LX/SL-K4250RX
(Ver1.32)
SERVICE
MANUAL
A3MonoCopier Contents
1.Precautions
2.ProductSpecicationsandDescription
3.DisassemblyandReassembly
4.Troubleshooting
5.ConnectionDiagram
6.ReferenceInformation
RefertotheservicemanualintheGSPN(seetherearcover)formoreinformation.

Table of Contents

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Summary

1. Precautions

1.1. Safety warning

General safety instructions for servicing, part usage, and laser safety.

1.2. Caution for safety

Specific precautions for handling toxic materials and electrical/fire hazards.

1.2.3. Handling precautions

Guidelines for personal safety and product handling to avoid injury and damage.

1.3. ESD precautions

Techniques to reduce component damage caused by static electricity.

2. Product Specifications and Description

2.1. Product Overview

Overview of key product features including printing speed, processor, memory, document feeder, and LCD.

2.2. Specifications

Detailed specifications for the machine like processor, memory, storage, interface, power, and warmup time.

2.2.1. General Specification

Comprehensive table of general machine specifications like CPU, memory, storage, interface, and power.

2.2.2. Print Specifications

Specifications for printing speed, FPOT, resolution, printer languages, font, and OS support.

2.2.3. Scan specification

Specifications for scanning capabilities including speed, color modes, file formats, resolution, and destinations.

2.2.4. Copy specification

Specifications for copying functions like speed, FCOT, resolution, reduce/enlarge, and features.

2.2.5. Fax specification

Specifications for fax functionality including communication system, speed, memory, and features.

2.2.6. Paper Handling specification

Details on paper input capacity, media sizes, types, weight, and sensing for trays.

2.2.7. Software and Solution specification

Specifications for application software, mobile printing, and security solutions.

2.2.8. Supplies

Information on toner cartridges, OPC drum unit, and waste toner container yield.

2.2.9. Maintenance Parts

List of maintenance parts with part codes, life expectancy, and remarks.

2.2.10. Option

List of optional accessories available for the machine, including their models.

2.3. Machine External View

Diagrams showing the external view of the machine with numbered parts.

2.4. Feeding System

Overview of the paper feeding system, including its main components.

2.4.1. Feeding System Overview

Description of the paper feeding system's function and main components.

2.4.2. Main Components and functions

Detailed explanation of rollers and their functions within the feeding system.

2.5. Image Creation

Explanation of the image creation process, including drum charging, laser exposure, development, and transfer.

2.5.1. Printing process overview

Overview of the printing process stages from OPC drum charge to cleaning.

2.5.2. Imaging Unit

Overview of the imaging unit, including drum diameter and developing gap.

2.6. Fuser unit

Description of the image fusing process and the fuser unit's components.

2.6.1. Fuser Unit overview

Overview of the fuser unit, explaining its heat and pressure application for fusing toner.

2.7. Laser Scanning Unit (LSU)

Overview of the LSU, its components, and optical path.

2.7.1. LSU overview

Detailed explanation of the LSU's components and function in forming a latent image.

2.8. Drive System

Overview of the machine's drive system, including motors and their functions.

2.8.1. Drive Motors

Table listing drive motors, their types, quantity, and functions.

2.9. Scanner System

Overview of the scanner system, its parts, and functions.

2.9.1. Scanner System Overview

Explanation of the scanner's role, modules, and carriage movement.

2.9.2. Scanning System Components

Diagram and description of the scanner system's construction and components.

2.10. Dual Scan Document Feeder(DSDF) for K4350 and K4300

Overview of the DSDF, including its parts and functions.

2.10.1. DSDF overview

Description of DSDF components like stacker assembly, rollers, and CIS module.

2.11. Reverse Automatic Document Feeder(RADF) for K4250

Overview of the RADF, its parts, and functions.

2.11.1. RADF overview

Description of RADF components like registration rollers and document trays.

2.12. Hardware Configuration

Overview of the machine's electrical circuit system components.

2.12.1. Main Controller (Main Board)

Details about the main controller's processor, memory, and connectivity.

2.12.3. SMPS (Switching Mode Power Supply) board

Specifications and connections for the SMPS board supplying power.

2.12.5. HVPS board

Specifications and connections for the High Voltage Power Supply (HVPS) board.

3. Disassembly and Reassembly

3.1. Precautions when replacing parts

Essential precautions before assembling, disassembling, and handling PBAs.

3.1.1. Precautions when assembling and disassembling

Guidelines for using approved parts, noting screw locations, and checking power cords.

3.1.2. Precautions when handling PBA

Precautions for handling Printed Circuit Board Assemblies (PBAs) to prevent static damage.

3.2. Maintenance

Procedures for machine cleaning and maintenance tasks.

3.2.1. Machine Cleaning for maintenance

Steps for cleaning the scan glass and DSDF white bar.

3.2.2. Replacing the maintenance part

Procedures for replacing key maintenance parts like the drum unit.

3.2.2.1. Drum Unit

Step-by-step guide for removing and replacing the drum unit.

3.2.2.2. Development(Deve) Unit

Detailed steps for removing and replacing the developer unit.

3.2.2.3. Fuser Unit

Procedure for removing and replacing the fuser unit.

3.3. Replacing the main SVC part

Procedures for replacing major service parts of the machine.

3.3.1. Left cover

Steps for removing the left cover of the machine.

3.3.2. Rear Cover

Procedure for removing the rear cover of the machine.

3.3.3. LSU

Steps for removing the Laser Scanning Unit (LSU).

3.3.5. HVPS board

Steps for removing the High Voltage Power Supply (HVPS) board.

3.3.6. OPE Unit

Procedure for removing the Operator Panel Electronics (OPE) Unit.

3.3.7. Main board

Steps for removing and replacing the main board.

3.3.8. Deve Fan

Procedure for removing the developer fan.

3.3.9. SMPS board

Steps for removing the SMPS board.

3.3.10. FDB board

Procedure for removing the Fuser Drive Board (FDB).

3.3.11. Fuser_Exit Drive Unit

Steps for removing the Fuser/Exit Drive Unit.

3.3.12. Main Drive Unit

Procedure for removing the main drive unit.

3.3.13. Pick-up Drive unit

Steps for removing the pick-up drive unit.

3.3.14. Toner Duct Drive Unit

Procedure for removing the toner duct drive unit.

3.3.15. Toner Supply Drive Unit

Steps for removing the toner supply drive unit.

3.3.16. Toner Duct

Procedure for removing the toner duct.

3.3.17. Waste Toner Container sensor

Steps for removing the waste toner container sensor.

3.3.18. Auto Size Sensor

Procedure for removing the auto size sensor.

3.3.19. Exit Unit

Steps for removing the exit unit.

3.3.20. Side Unit

Procedure for removing the side unit and its stoppers.

3.3.20.1. Fuser out sensor

Steps for removing the fuser out sensor.

3.3.20.2. Temperature sensor and Duplex sensor

Procedure for removing the temperature and duplex sensors.

3.3.20.3. MP unit

Steps for removing the Multi-Purpose (MP) unit.

3.3.21. Pick-Up Unit and sensor

Procedure for removing the pick-up unit and its sensors.

3.3.25. DSDF Unit

Procedure for removing the Dual Scan Document Feeder (DSDF) unit.

3.3.25.1. DSDF board

Steps for removing the DSDF board.

3.3.26. RADF Unit

Procedure for removing the Reverse Automatic Document Feeder (RADF) unit.

3.3.26.1. RADF Board

Steps for removing the RADF board.

3.3.27. Scanner Unit(Platen Unit)

Steps for removing the scanner unit (platen unit).

3.3.27.1. Scan Glass

Procedure for removing the scan glass.

3.3.27.2. LED Lamp Module

Steps for removing the LED lamp module.

3.3.27.3. Scanner Imaging Unit

Procedure for removing the scanner imaging unit.

3.3.27.4. Scan Joint Board

Steps for removing the scan joint board.

3.3.27.5. APS Sensor

Procedure for removing the APS sensor.

3.3.28. Side Cover Open Switch

Steps for removing the side cover open switch.

3.3.29. Front Cover Open Switch

Procedure for removing the front cover open switch.

3.3.30. HDD

Steps for removing and installing the Hard Disk Drive (HDD).

3.3.31. Card Reader or NFC Kit Installation

Procedures for installing the Card Reader or NFC Kit.

3.3.31.1. Installing the Card Reader or NFC Kit on Working table(BYOD) table

Detailed steps for installing the Card Reader or NFC Kit on the working table.

3.3.31.2. Installing the Card Reader or NFC Kit inside Cover-Scan Front

Procedures for installing the Card Reader or NFC Kit inside the cover-scan front.

3.3.32. Installing the Working table(BYOD) table

Steps for installing the working table.

3.3.33. DCF (Double Cassette Feeder)

Procedures for replacing DCF unit components.

3.3.33.1. DCF main board

Steps for removing the DCF main board.

3.3.33.2. DCF Feed Motor

Procedure for removing the DCF feed motor.

3.3.33.3. DCF Pick Up Motor

Steps for removing the DCF pick-up motor.

3.3.34. Finisher

Procedures for disassembling and reassembling the finisher.

3.3.34.1. Entrance Sensor

Steps for removing the finisher entrance sensor.

3.3.34.2. Entrance Motor

Procedure for removing the finisher entrance motor.

3.3.34.3. Exit Sensor

Steps for removing the finisher exit sensor.

3.3.34.4. Exit Motor

Procedure for removing the finisher exit motor.

3.3.34.5. Sub Paddle Shaft Sub Assy

Steps for removing the sub paddle shaft sub assembly.

3.3.34.6. Front Jogger Motor

Procedure for removing the front jogger motor.

3.3.34.7. Front Jogger Home Sensor

Steps for removing the front jogger home sensor.

3.3.34.8. Rear Jogger Motor

Procedure for removing the rear jogger motor.

3.3.34.9. Rear Jogger Home Sensor

Steps for removing the rear jogger home sensor.

3.3.34.10. Stapler

Procedure for removing the stapler unit.

3.3.34.11. Traverse Home Sensor

Steps for removing the traverse home sensor.

3.3.34.12. Traverse Motor

Procedure for removing the traverse motor.

3.3.34.13. Stacker Motor

Steps for removing the stacker motor.

3.3.34.14. Stacker Encoder Sensor

Procedure for removing the stacker encoder sensor.

3.3.34.15. Stacker Lower Limit Switch

Steps for removing the stacker lower limit switch.

3.3.34.16. Stack Beam Sensor

Procedure for removing the stack beam sensor.

3.3.34.17. Stack Position Sensor

Steps for removing the stack position sensor.

3.3.34.18. Paper Holding Lever Solenoid

Procedure for removing the paper holding lever solenoid.

3.3.34.19. Paper Support Motor

Steps for removing the paper support motor.

3.3.34.20. Paper Support Home Sensor

Procedure for removing the paper support home sensor.

3.3.34.21. Ejector Motor Assy

Steps for removing the ejector motor assembly.

3.3.34.22. Main Paddle Motor

Procedure for removing the main paddle motor.

3.3.34.23. Main Paddle Home Sensor

Steps for removing the main paddle home sensor.

3.3.34.24. Main Paddle

Procedure for removing the main paddle units.

3.3.34.25. Ejector Assy

Steps for removing the ejector assembly.

3.3.34.26. Punch Dust Full Sensor

Procedure for removing the punch dust full sensor.

3.3.34.27. Door Switch

Steps for removing the door switch.

3.3.34.28. Top Door Switch

Procedure for removing the top door switch.

4. Troubleshooting

4.1. Control panel

Overview of the control panel display, buttons, and power status indicators.

4.1.1. Display screen and useful buttons

Explanation of display screen terms, menu navigation, and screen gestures.

4.1.1.1. Menu navigation

Defines terms like Tap, Touch and Hold, Swipe, and Panning for screen interaction.

4.1.1.2. Home Screen Overview

Description of the main home screen, navigation, and application menus.

4.1.1.3. Customizing your home screen

Steps for creating and deleting shortcuts, and adding widgets.

4.1.1.4. Notification Bar

Information on the notification bar and accessing additional panel functions.

4.2. Understanding the status LEDs

Explanation of the status LED colors and their meanings for machine status.

4.3. Updating Firmware

Instructions for updating printer firmware via control panel or network.

4.3.1. Updating from the Printer Control Panel

Step-by-step guide for updating firmware using the printer control panel.

4.3.2. Updating from the Network

Procedure for updating firmware using the network via SyncThru Web Service.

4.4. JAM removal

Procedures for removing paper jams from various locations in the machine.

4.4.1. Clearing original document jams

Instructions for clearing paper jams within the ADF.

4.4.2. Clearing paper jams

Steps for clearing paper jams from trays, inside the machine, and the exit area.

4.5. Service Mode (Tech Mode)

Guide on how to enter the machine's service mode.

4.5.1. Entering the Service Mode

Step-by-step instructions for accessing the service mode.

4.5.2. Service Mode Menu Tree

Overview of the service mode menu structure.

4.5.5. Diagnostics

Procedures for performing diagnostic tests on engine, fax, and scanner systems.

4.5.5.1. Engine Diagnostics

Details on engine NVM initialization and read/write operations for configuration.

4.5.5.2. Fax Diagnostics

Procedures for fax NVM read/write and test routines.

4.5.5.3. Scanner Diagnostics

Procedures for scanner shading tests and NVM read/write operations.

4.5.5.4. Adjustment

Procedures for print adjustment, image position, and scan area adjustments.

4.5.6. Service Functions

Various service functions including memory clear, hard disk maintenance, network settings.

4.5.6.1. Main Memory Clear

Procedure to reset the machine's main memory to factory default settings.

4.5.6.2. Hard Disk Maintenance

Functions for clearing device configuration, temporary data, and user data.

4.5.6.4. Network Port

Function to enable/disable remote connections via Telnet, OSGI, and SMB protocols.

4.5.6.5. Debug Log

Function to set the system log message level for troubleshooting.

4.5.6.6. Capture Log

Procedure to copy system logs to USB memory for analysis.

4.5.6.8. System Recovery

Procedures for entering system recovery mode and performing HDD repair or format.

4.5.6.9. TR Control Mode

Function to adjust transfer values for optimizing image quality based on paper type.

4.6. Error Code and Troubleshooting

Guide to understanding and resolving error codes displayed on the control panel.

4.6.1. 11-2 Txx (Paper mismatch error)

Troubleshooting steps for paper mismatch errors in various trays.

4.6.3. A1-xxxx (Motor error)

Troubleshooting steps for various motor errors, focusing on Regi/MP and Fuser motors.

4.6.4. A2-xxxx (Fan error)

Troubleshooting steps for various fan errors, including duplex, deve, and OPC fans.

4.6.5. A3-xxxx (Sensor error)

Troubleshooting steps for sensor errors, including fuser thermistors and inner temperature sensors.

4.6.6. C1-xxxx (Toner cartridge error)

Troubleshooting steps for toner cartridge errors like low toner, end of life, and compatibility.

4.6.7. C3-xxxx (Drum unit error)

Troubleshooting steps for drum unit errors, including replacement and cleaning.

4.6.8. C6-xxxx (Fuser unit error)

Troubleshooting steps for fuser unit errors, including replacement and installation checks.

4.6.9. C7-xxxx (Waste toner container error)

Troubleshooting steps for waste toner container errors like full or not installed.

4.6.10. C8-xxxx (Developer error)

Troubleshooting steps for developer unit errors, including end of life and supply issues.

4.6.11. C9-xxxx (Transfer roller error)

Troubleshooting steps for transfer roller errors, including replacement.

4.6.12. H1-xxxx (Optional tray error)

Troubleshooting for errors related to optional trays, such as paper jams and low paper.

4.6.13. H2-xxxx (Inner Finisher error)

Troubleshooting steps for various inner finisher errors.

4.6.14. Mx-xxxx (Jam error)

Troubleshooting steps for various paper jam errors in different trays and locations.

4.6.15. Sx-xxxx (System error)

Troubleshooting steps for system-related errors like video system, HDD, MSOK, network, and UI issues.

4.6.17. U1-xxxx (Fuser error)

Troubleshooting steps for fuser unit errors, including thermistor and halogen lamp issues.

4.6.18. U2-xxxx (LSU error)

Troubleshooting steps for LSU motor and installation errors.

4.6.19. U3-xxxx (Document Feeder error_DSDF)

Troubleshooting steps for DSDF errors like paper jams and sensor issues.

4.7. Image quality problems and solutions

General guide to troubleshooting image quality issues.

4.7.1. Vertical Black Lines

Troubleshooting steps for vertical black lines in print output.

4.7.2. Vertical Light or White Lines

Troubleshooting steps for vertical light or white lines in print output.

4.7.3. Horizontal Periodic Black Lines, Dots.

Troubleshooting steps for horizontal periodic black lines and dots.

4.7.4. Horizontal Periodic Light;Dark Lines, Dots.

Troubleshooting steps for horizontal periodic light/dark lines and dots.

4.7.5. Blurred image

Troubleshooting steps for blurred images, often related to humidity or voltage.

4.7.6. Foggy image

Troubleshooting steps for foggy images, related to OPC voltage or toner supply.

4.7.7. Light image

Troubleshooting steps for light images, often related to transfer voltage or TC sensor.

4.7.8. Uneven pitch and jitter image

Troubleshooting steps for uneven pitch and jitter in images, related to drive gears or LSU.

4.7.9. Skewed image

Troubleshooting steps for skewed images, related to cassette installation or rollers.

4.7.10. Poor fusing performance

Troubleshooting steps for poor fusing performance, related to paper type, fuser unit, or temperature control.

4.7.11. Stain on the paper back side

Troubleshooting steps for stains on the back side of the paper.

4.8. Other Errors

Solutions for other miscellaneous problems.

4.8.1. Image problem

Troubleshooting for image problems, specifically toner cartridge detection and paper edge contamination.

4.8.2. Fuser problem

Troubleshooting for acoustic noise issues related to the fuser unit.

4.8.3. Scanner and Document Feeder problem

Troubleshooting for common scanner and document feeder issues.

4.8.4. Drive unit problem

Troubleshooting for drive unit problems, specifically noise during printing.

4.8.5. Feeding system problem

Troubleshooting for feeding system issues like cassette locking and paper pickup.

4.8.6. LSU problem

Troubleshooting for LSU motor noise issues.

4.8.7. Software problem

Troubleshooting steps for software-related issues like driver installation and scan login failures.

4.8.8. Electrical circuit problem

Troubleshooting for electrical circuit issues like side cover recognition, SMPS voltage, HDD noise, networking, UI, and NFC.

4.9. Adjusting the ADF(DSDF_RADF) skew

Procedure for adjusting the ADF skew by modifying hinge position.

4.10. SPDS (Smart Printer Diagnostic System) Application

Overview of the SPDS application for service engineers.

4.10.1. SPDS App Installation and Login

Steps for installing and logging into the SPDS application.

4.10.1.1. SPDS App Installation

Detailed guide for installing the SPDS app from the Google Play Store.

4.10.1.2. User Registration Request

Procedure for user registration and inputting required information.

4.10.1.3. Change_Reset Password

Steps for changing or resetting the user password.

4.10.1.4. Login

Procedure for logging into the SPDS application.

4.10.1.5. Select Connect Method

Guide for selecting connection methods like WIFI-Direct and NFC.

4.10.1.6. Consent to customer information

Steps for confirming user information and customer consent.

4.10.2. SPDS Menu Introduction

Introduction to the SPDS menu, including Error Mode, Action Guide, etc.

4.10.2.1. Error Mode

Explanation of the Device Error Inquiry and detailed error information within SPDS.

4.10.2.2. Diagnosis Mode

Guide to using the Diagnosis Mode for checking device status.

4.10.2.3. Test Mode

Procedures for using the Test Mode to print various test patterns.

4.10.2.4. Information Mode

Explanation of the Information Mode for viewing configuration, supplies, and network details.

4.10.2.5. Service Mode

Procedures for cloning, admin login, export/import, and device reboot in service mode.

4.10.3. Corrective Upload

Procedure for uploading corrective actions and detailed information.

4.10.4. Exceptions

Handling exceptions related to device and server interface connections.

5. Connection Diagram

5.1. Connection Diagram (FUSER_EXIT)

Diagram showing the electrical connections for the fuser and exit units.

5.2. Connection Diagram (PICK UP_PH DRIVE_SIDE)

Diagram illustrating the electrical connections for the pick-up drive side unit.

5.3. Connection Diagram (LSU_HVPS)

Diagram showing the electrical connections between the LSU and HVPS boards.

5.4. Connection Diagram (Toner)

Diagram illustrating the electrical connections for the toner system components.

5.5. Connection Diagram (FDB_SMPS)

Diagram showing the electrical connections between the FDB and SMPS boards.

5.6. Connection Diagram (UI)

Diagram illustrating the UI connections to USB hubs and the main PBA.

5.7. Connection Diagram (FRONT_OPC)

Diagram showing connections for the front OPC unit, including sensors and motors.

5.8. Connection Diagram (Scanner)

Diagram of the scanner unit connections to the main PBA and DSDF CIS.

5.9. Connection Diagram (Double Cassette Feeder)

Diagram showing the DCF connections to the main PBA and finisher.

5.10. Connection Diagram (FAX_DUAL NW_FDI)

Diagram illustrating connections for Fax, Dual Network, and FDI modules.

6. Reference Information

6.1. Tools for Troubleshooting

List of recommended tools for troubleshooting and their uses.

6.2. Glossary

Definitions of technical terms used in the manual.

6.3. Model Name and Code

Explanation of the model naming structure and function codes.

6.4. Document Revision List

List of document revisions, dates, pages, and descriptions of changes.

Samsung MultiXpress K4 Series Specifications

General IconGeneral
CategoryCopier
Print ResolutionUp to 1200 x 1200 dpi
Duplex PrintingYes
Scan Resolution (Optical)Up to 600 x 600 dpi
FunctionsPrint, Copy, Scan, Fax
Print Speed (Black)40 ppm
Hard Disk Drive320 GB
Media Sizes SupportedA4, A5, B5, Executive, Custom
Media Types SupportedPlain Paper, Thick Paper, Thin Paper, Bond Paper, Cardstock, Recycled Paper, Archive Paper
Scan DestinationsEmail, USB, Network, PC, FTP, SMB
Copy Speed (Black)40 cpm
Zoom Range25% - 400%
InterfaceUSB 2.0, Ethernet
Mobile Printing SupportYes
ConnectivityUSB, Ethernet, Wi-Fi
Operating System CompatibilityWindows, Mac, Linux

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