Vertical Line Getting Curved, Replace LSU | Dell 1815DN specification

Troubleshooting

7.2.10 Vertical Line Getting Curved

• Description	When printing, vertical line gets curved.

	Check and Cause		Solution

1. If the supply of +24v is unstable in the Main Control board			1. Replace LSU.
linking with LSU, check drive by Engine		Test Mode :
Diagnostic Code 1 LSU Motor on.
			2. Replace the Main Control board.

Service Manual	7-9

Image 102

Dell 1815DN service manual Vertical Line Getting Curved, Replace LSU

Contents

Dell 1815dn Page Precautions Safety Warning Electric Shock and Fire Safety Precautions Toxic material Handling Precautions Assembly / Disassembly Precautions Ensure the printer is installed safely Be careful with the high temperature partWhen you move the printer Disregarding this warning may cause bodily injury ESD Precautions Super Capacitor or Lithium Battery Precautions Tool for Troubleshooting Acronyms and Abbreviations SPL Sample Pattern for the Test 1 A4 ISO 19752 Standard PatternThis test page is reproduced at 70% of the normal A4 size Product Specifications Product Overview Product General Specifications Remarks Sdram Items Dell Laser MFP 1815dn Remarks Copy Telephone ITU-T G3 Face Down 150Sheets/20lb Face Up 1Sheet Whql MFP System Configurations CPU Part FAX Section Modem Part Modem SFX336 specification Signal Transition of DAA Solution SSD Clkp Clkn Dibp Dibn LSD Line Interface Part Ring Sensitivity Scan Part OPE Pannel Section Printer Section Items Specification Remark RTC Core Voltage PLL Main / Hpvc System Outline Copier Section Hvps High Voltage Power Supply Telephone Section 15% Output Voltage Fluctuation Method PWM ControlLine Regulation under +5V Smps Switching Mode Power SupplyRemark AVG TBD Wh Fuser AC Power Control Fixing Part Fuser Toner CartridgeLSU Laser Scanner Unit Transfer Ass’y Feeding Part Duty Cycle General Precautions on Disassembly Releasing Plastic LatchesWhenever servicing the machine, you must perform as follows If necessary, remove the Toner Cartridge Front CoverTake out the Cassette Open the Cover MP Tray Assy Open the MP Tray Assy Rear Cover Take out the Duplex Unit Face Up Cover Fuser Assy Bracket Jam Holder Side Cover Left, Right Dimm Cover Scanner Assy Pull up the Scanner Assy, as shown below Lift the ADF Assy upward to remove it Remove the four screws securing the Scan UpperRemove the CCD Cable, as shown below Pull up the CCD Shaft and take out the Ccdm Remove the CCD Holder ADF Assy Remove the Open Cover, as shown below ADF Motor Assy OPE Unit Remove the Keys from the OPE CoverRemove the Contact Rubber from the OPE Cover Shield Controller Assy Film Cable Drive Assy Duplex Drive Assy Shield Smps Assy Connectors are located, as shown below Connection PCB Fuser Drive Assy 16 Fan Pick Up Roller Assy Duplex Guide Housing With Feed Roller Pull the Feed Roller from the Bushing Hvps Housing Middle Cover Assy Cover Mid Front MPF Housing Feed Roller Parts Pull up the Feed Idle Shaft and the Bushs with SpringRelease the E-Ring securing the Feed2 Gear and remove it Remove the Clutch Unit, as shown below Pull up the Feed1 Roller from the Bushing, as shown below Pick Up Gear Assy & Solenoids Exit Roller 26 LSU Terminal PBA Transfer Roller Parts Alignment and Adjustments Paper path Clearing Paper Jams Clearing Document Jams If the document is jammed in the paper feed area If the document is jammed in the paper exit area Clearing Jams in the Paper Paths Paper Feed Jam trayOperator Panel Message Location of Jam Go to Paper Feed Jam optional tray Bypass tray JamPull the tray 1 half Pull the paper straight up and out Fuser Area Jam Paper Exit Jam Alignment & Adjustments Duplex Jam Push the duplex unit to the printer Duplex Jam Paper Setting Copy Setup Fax Setup User ModeDell Laser MFP1815dn Setting-up System in Tech Mode Tech ModeHow to Enter Tech Mode To enter the Tech mode Data Setup Method Fprt rom file Do not turn off the power while upgrading processLocal Machine Remote FAX Select the Adjust Shading at Machine Test Report Protocol List Diagnostic Engine Test ModeTo enter the Engine Test Mode To enter the Engine Test mode Detail DescriptionEngine Test Mode Laser Motor OnOff Identify Sale Date Consumables and Replacement Parts Component Replacement Cycle Abnormal Image Printing and Defective Roller Heat Roller Error Messages Display Meaning Suggested solutions Toner Empty Wrong Print Position Paper Feeding ProblemsCheck and Cause Solution 2 JAM 3 JAM 4 JAM Multi-Feeding Paper rolled in the fuser Paper rolled in the OPC Defective ADF Defective LCD Operation Printing Problems malfunctionDisplay Description Paper Empty without indication Not functioning of the fuser gear due to melting awayPaper Empty Motor breaks away from its place due to gear melting away Door Open No Beep on when the Door is openError lamp is on even when the print Door is closed Check the insertion of the Door S/W Connect No Power Defective Motor operation Vertical Line Getting Curved Replace LSU Printing Quality Problems Vertical Black Line and BandVertical White Line Horizontal Black Band Black/White Spot Light Image Dark Image or a Black Uneven Density Background Ghost Hvps board Life of developer is expiredAbove directions Stains on the front Stains on back Blank Page Print out Fax & Phone Problems No Dial ToneDefective MF Dial Defective FAX FORWARD/RECEIVE Defective FAX Forward FAX at another fax machine Defective FAX ReceiveDial Telephone line Another machine receiving a FAX additionally Sent to To the FAX Mode Defective Automatic ReceivingDescription The automatic receiving function is not working Copy Problems White CopyBlack Copy Abnormal noise Defective Image Quality Scanning Problems Defective PC ScanDefective Image Quality of PC Scan Service for the Life of Toner Cartridge Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Open the Front Cover Signs and Measures at Poor toner cartridge Never use usual alcohol Fault Signs Cause & CheckWhite Black spot Recycled product Fault Signs Cause & Check Solution Ghost & Image Network Problems Troubleshooting General Problems Macintosh Problems Windows Problems SyncThru Installation Problems Page8-4 Page8-2Page8-3 Page8-5 Main ExplodedViews Cover Assy Middle Cover Assy Front Cover Assy Rear Cover Assy Frame Assembly Fuser Drive Assy Main Drive Assy MP Assy ADF Assy Cover Platen Assy OPE Unit Scanner Assy Cassette Assy Fuser Assy Duplex UnitOptional Parts ListModel Dell 1815dn Rear Cover Assy Fuser Drive Assy MP Assy Cover Platen Scanner Assy Fuser Assy BELT-TIMMING Block Diagram Connection Diagram Dell 1815dn recommended spare part list Modems, Accessories