Printed Vertical Lines become curved | Samsung SCX-4100 guide

Troubleshooting

7.4.10 Printed Vertical Lines become curved

• Description	When printing, vertical lines are not straight.

	Check and Cause	Solution

1. Check stability of 24V supply to LSU.		1. 24V stable - Replace LSU.
		24V unstable replace SMPS, if the problem persists
		replace the main PBA.

Service Manual

7-19

Samsung Electronics

Image 84

Samsung SCX-4100 specifications Printed Vertical Lines become curved

Contents

Precautions SpecificationsTroubleshooting Block Diagram Http//itself.sec.samsung.co.kr Precautions Safety Warning Electric Shock and Fire Safety Precautions Toxic material Handling Precautions Assembly / Disassembly Precautions Be careful with the high temperature part Disregarding this warning may cause bodily injury ESD Precautions Tool for Troubleshooting Acronyms and Abbreviations IPC Select a location for the printer Sample Pattern for the Test 1 A4 5% Pattern 2 A4 2% Pattern 3 A4 IDC 5% Patten Memo Specifications General Specifications Print Specification Scan Specification Copy Specification Copy Paper Handiling Specification Other Specification Whql Memo Printer Components Front View Rear View Control Panel System Layout Paper Feed Mechanism Transfer Ass’yDrive Ass’y Fixing PartFuser Safety Relevant Facts Scanner UnitScan Image Controller CIS Driver Circuit LSU Laser Scanner Unit Toner Cartridge Main PBA Asic Chorus2 Flash MemorySdram Sensor input circuit Paper Feeding, Toner Cartridge Sensing Paper Exit SensingCover Open Sensing DC FAN / Solenoid Driver Smps & Hvps HVPSHigh Voltage Power Supply Smps Switching Mode Power Supply Rated Power OutputConsumption Power Length of Power Cord 1830 ± 50mm Power Switch Fitted Fuser AC Power Control FeatureEnvironment Condition Safty Requrement Engine F/W DriveTransfer Feeding Fusing 5 LSUHeat Lamp Method Memo General Precautions on Disassembly Releasing Plastic LatchesWhenever servicing the machine, you must perform as follows Front and Rear Cover Units Side Covers Scanner Ass’y Remove Scanner Ass’y Dismantle 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 LSU Fan 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 mode Paper Path Clearing Paper Jams Paper Tray Paper Exit Area Fuser Area or Around the Toner Cartridge Manual Feeder Printing the System Data List Clearing the MemoryClearing the Drum Consumables and Replacement Parts LCD Status Display by Each Error Periodic Defective Image Roller Defective image Typical defect Printing Problems Causes and Solutions Vertical Black Lines and BandsVertical White Line Horizontal Black Bands Black/White Spot Light Image Dark Image or a Black Uneven Density Background Ghost Stains on the Face Digital Printer Ghost Stains on Back Blank Page Print out Copy Problems White CopyBlack Copy Abnormal noise Defective Image Quality Paper Feed problems Causes and Solutions Wrong Print Position2 JAM 3 JAM 4 JAM Multi-Feeding Paper rolled in the fuser Paper rolled on the OPC Drum Printer Faults Causes and Solutions Fuser ErrorLSU Error Fuser gear melts due to overheating causing Paper Jam Paper Empty Paper Empty without indication Cover Open No error message when the cover is open No Power Defective motor operation Printed 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 parts Signs and Measures of Poor toner cartridge Ended Fault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Software Problems Causes and Solutions Printer is not working Not working with the message insufficient printer Abnormal Printing Spool Error How to delete the data in the spool manager Memo Exploded Views and Parts List Main Assembly Main Assembly Parts List Frame Assembly Frame Unit Assembly Parts List Description SEC.Code ’ty Remark Frame 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 Remark Drive Unit Assembly Drive Unit Assembly Parts List Cassette Unit Assembly Cassette Unit Assembly Parts List Block Diagram 10.10Connection Diagram