Printing Quality Problems, Vertical White Line | Dell 1815DN

Troubleshooting

7.3 Printing Quality Problems

7.3.1 Vertical Black Line and Band

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

1.Straight thin black vertical line occurs in the printing.

2.Dark black vertical band occur in the printing.

	Check and Cause	Solution

1. Damaged develop roller in the Developer.		1. If causes 1 and 2 occur in the developer
	Deformed Doctor-blade.	cartridge, replace the developer and try to
		print out.
2.	Scratched surface of the charge roller in	2. Replace the transfer roller if occurred as
	the developer.	No. 3.
3.	Partial depression or deformation on the
	surface of the transfer roller.

7.3.2 Vertical White Line

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

White vertical voids in the image.

Check and Cause	Solution

1. Foreign matter stuck onto the window of	1. Foreign matter stuck onto the window :
internal lenses of LSU mirror.	Clean the LSU window with recommend-
	ed cleaner(IPA) Clean the window with a
	clean cotton swab.
2. Foreign matter or toner particles between	2. Foreign matter in the LSU : Open the
the developer roller and blade.	cover of LSU and clean with a cotton
(In case the life of the developer has	swab on the surface of the reflex mirror.
been expired, white lines or light image
occur in front of the image.)
3. It may occur when a Burr and foreign	3. No 3. : Remove the foreign matter and
substances are on the window of the	burr of the exposure window.
developer frame.	(Developer cartridge)
4. If the fuser is defective, voids occur peri -	4. No. 4. : Open the front cover and check
odically at the top of a black image.	ribs that corresponds to the position of
	the voids. Remove if found.
	5. If the problems are not solved, replace
	the developer cartridge.

7-10Service Manual

Image 103

Dell 1815DN service manual Printing Quality Problems, Vertical Black Line and Band, Vertical White Line

Contents

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