Samsung SCX-4100 specifications General Precautions on Disassembly, Releasing Plastic Latches

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Disassembly and Reassembly

55. Disassembly and Reassembly

5.1 General Precautions on Disassembly

When you disassemble and reassemble compo- nents, you must use extreme caution. The close proximity of cables to moving parts makes proper routing a must.

If components are removed, any cables disturbed by the procedure must be restored as close as possible to their original positions. Before remov- ing any component from the machine, note the cable routing that will be affected.

Releasing Plastic Latches

Many of the parts are held in place with plastic latches. The latches break easily; release them carefully.

To remove such parts, press the hook end of the latch away from the part to which it is latched.

Whenever servicing the machine, you must perform as follows:

1.Check to verify that documents are not stored in memory.

2.Be sure to remove the toner cartridge before you disassemble parts.

3.Unplug the power cord.

4.Use a flat and clean surface.

5.Replace only with authorized components.

6.Do not force plastic-material components.

7.Make sure all components are in their proper position.

Service Manual

Samsung Electronics

5-1

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Contents Precautions SpecificationsTroubleshooting Block DiagramHttp//itself.sec.samsung.co.kr Precautions Safety WarningElectric Shock and Fire Safety Precautions Toxic materialHandling Precautions Assembly / Disassembly PrecautionsBe careful with the high temperature part Disregarding this warning may cause bodily injuryESD Precautions Tool for Troubleshooting Acronyms and Abbreviations IPC Select a location for the printer Sample Pattern for the Test 1 A4 5% Pattern2 A4 2% Pattern 3 A4 IDC 5% Patten Memo Specifications General SpecificationsPrint Specification Scan SpecificationCopy Specification CopyPaper Handiling Specification Other Specification WhqlMemo Printer Components Front ViewRear View Control Panel System Layout Paper Feed Mechanism Transfer Ass’yDrive Ass’y Fixing PartFuserSafety Relevant Facts Scanner UnitScan Image Controller CIS Driver CircuitLSU Laser Scanner Unit Toner Cartridge Main PBA Asic Chorus2 Flash MemorySdram Sensor input circuitPaper Feeding, Toner Cartridge Sensing Paper Exit SensingCover Open Sensing DC FAN / Solenoid DriverSmps & Hvps HVPSHigh Voltage Power Supply Smps Switching Mode Power Supply Rated Power OutputConsumption Power Length of Power Cord 1830 ± 50mm Power Switch FittedFuser AC Power Control FeatureEnvironment Condition Safty RequrementEngine F/W DriveTransfer Feeding5 LSU FusingHeat Lamp Method Memo Releasing Plastic Latches General Precautions on DisassemblyWhenever servicing the machine, you must perform as follows Front and Rear Cover Units Side Covers Scanner Ass’y Remove Scanner Ass’yDismantle Scanner Ass’y Spring Pulley Idle ETC Belt Middle Cover FuserHeat Lamp Type Remove 4 screws and divide the Fuser into two parts Exit Roller LSUFan Engine Shield Ass’y Smps Transfer Roller Feed Roller Remove the Feed Roller and Feed Roller1, as shown below Pick Up Roller & Solenoid Memo Engine Test Mode To enter the Engine Test ModeDiagnostic To enter the Engine Test modePaper Path Clearing Paper Jams Paper TrayPaper Exit Area Fuser Area or Around the Toner Cartridge Manual FeederClearing the Memory Printing the System Data ListClearing the Drum Consumables and Replacement Parts LCD Status Display by Each ErrorPeriodic Defective Image Roller Defective image Typical defectVertical Black Lines and Bands Printing Problems Causes and SolutionsVertical White Line Horizontal Black Bands Black/White SpotLight Image Dark Image or a BlackUneven Density BackgroundGhost Stains on the Face Digital Printer GhostStains on Back Blank Page Print outWhite Copy Copy ProblemsBlack Copy Abnormal noise Defective Image QualityWrong Print Position Paper Feed problems Causes and Solutions2 JAM 3 JAM 4 JAMMulti-Feeding Paper rolled in the fuserPaper rolled on the OPC Drum Fuser Error Printer Faults Causes and SolutionsLSU Error Fuser gear melts due to overheating causing Paper Jam Paper EmptyPaper Empty without indication Cover OpenNo error message when the cover is open No Power Defective motor operationPrinted Vertical Lines become curved Toner Cartridge Service Precautions on Safe-keeping of Toner CartridgeService for the Life of Toner Cartridge Standard of guarantee for consumable partsSigns and Measures of Poor toner cartridge EndedFault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Software Problems Causes and Solutions Printer is not workingNot working with the message insufficient printer Abnormal Printing Spool Error How to delete the data in the spool managerMemo Exploded Views and Parts List Main Assembly Main Assembly Parts List Frame Assembly Frame Unit Assembly Parts List Description SEC.Code ’ty RemarkFrame Unit Assembly Parts ListCont Scanner Unit Assembly Scanner Unit Assembly Parts List Fuser Unit Assembly Fuser Unit Assembly Parts List WASHER-PLAIN Middle Cover Unit Assembly Middle Cover Unit Assembly Parts List ’ty RemarkDrive Unit Assembly Drive Unit Assembly Parts ListCassette Unit Assembly Cassette Unit Assembly Parts List Block Diagram 10.10Connection Diagram
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