Dropouts, horizontal streaks, stray dots | Kyocera FS1750, 3750

5.4. Print Quality Problems

Dropouts, horizontal streaks, stray dots

Clean the charger wire.

Open the printer side cover. Pull the green main charger wire cleaning knob slowly in and out a few times. See Section 4.2.

Note the spacing of the defects.

If the defects occur at regular intervals of 60.6 mm (2.4 inches), the problem may be a dirty transfer roller. Call for the assistance of a service person.

If the defects occur at regular intervals of 94 mm (3.7 inches), the problem may be a damaged drum unit or fuser roller. Call for the assistance of a service person.

Black or white vertical streaks

Check the control panel.

If theý7RQHU ORZ 7.ðëí &OHDQ SULQWHU message is displayed and the indicator is flashing, install a new toner kit. See Section 4.1.

Clean the charger wire.

Open the printer side cover. Pull the green main charger wire cleaning knob slowly in and out a few times. See Section 4.2.

Call for the assistance of a service person.

If the above checks do not solve the problem, call for the assistance of a service person.

5-4

Image 90

Kyocera FS1750, 3750 Dropouts, horizontal streaks, stray dots, Black or white vertical streaks, Clean the charger wire

Contents

FS-1750 FS-3750 Introduction Limited Warranty LicenseLimitation of Remedies General Typeface Trademark Acknowledgement FCC statement Conforming to the Class a limitsConforming to the Class B limits Important note on the interface connectors Interface connectorsSafety information Laser safety Ozone concentration Cdrh regulations Declaration of Conformity U.S.A CE Marking Directive Viii Declaration of Conformity Australia Canadian Department of Communications compliance statement ISODisclaimer Prolonged Non-Use and Moving the Printer Prolonged Non-useMoving the Printer Action program Energy Kyocera ECO-PRODUCT Maintenance Features Print Engine FeaturesIntroduction Software Features Options Guide to the Manual CD-ROM Kyocera Digital LibraryPrescribe 2e Programming Manual on CD-ROM Table of Contents Xvi Xvii Xviii Positioning the Printer ClearancePlaces to Avoid Voltage Temperature 10C to 32.5C 50F to 90.5F Humidity 20% to 80%Basic requirements Frequency Power Supply Unpacking and Inspection List of Shipped Components Names of Parts Front View Interior View Rear View Setting Up and Interfacing Install the toner container Open the top cover Install the waste toner bottle Close the top cover Open the side cover on the left side of the printer Adjusting the paper guides in the cassette and adding paper Setting Up and Interfacing Install the face-up output tray if required Open the paper stopper on the face-down output tray Parallel interface Attach the power cordConnect the printer to the computer Serial interface Set the emulation mode Print a statusTest the interface with the computer Install the printer driver Windows 95/Windows CD-ROM Drive Name\drivers\Language\pcl\9x Windows CD-ROM Drive Name\drivers\Language\kpdl\9x MP Multi-Purpose Tray Feeding First Mode Automatic Manual FeedingCassette Mode Duplex Printing from the MP tray First Mode Automatic Manual Feeding 03 WUD\ Prgh Luvw Cassette Mode Feeding Envelopes Memory Card Handling a Memory CardTo Remove the Memory Card Memory Expansion Installation Removing the Main Circuit Board Withdrawing the Main Circuit Board from the Printer Installing and Removing SIMMs Installing SIMMsSimm to be used Testing the Expansion Memory Removing SIMMs Operating the Laser Printer Control Panel Message Display Interface IndicatorResolution Indicator Message Meaning Paper Size Indicator Copy Indicator Symbolic Indicators Indicator Name Description Control Keys Key Function Stack Selection Operating ProceduresSwitching Power On Feed Selection On-line/Off-line Setting Canceling Printing Status Printout Sample Status Form Feed Using the Mode Select Menu Mode Select MenuFunction Default Setting 2SWïý 520ý ý ý ý ý ý ý Configuring Interfaces Parallel Interface Setting the RAM Disk Size RAM Disk Operations Reading Fonts/Data from a Memory Card Operating a Memory CardHints on Writing Fonts to the Memory Card Writing Data to a Memory Card Deleting Data from a Memory Card Formatting a Memory Card Printing a list of data names Setting Custom Sizes Keys to displayý!&DVVHWWHýVLHý Setting the Paper Type Cassette, Media Type and Custom Settings Making Settings Paper Type User Setting Submenus displayed Selection parameters Description Sleep Ecopower Mode Cancel key Dumping Received Data KIR 2 Level Dark vertical stripes Ecoprint ModeOptimized stripes White vertical stripes Adjusting the Print Density Resource Protection Setting the Audio Warning Buzzer Type of Error and Corresponding Audio Alarm Buzzer Setting the Audio Warning Buzzer Fonts Internal Fonts List of Fonts Internal Scalable and Bitmap FontsFont Number Font samples List of Fonts Kpdl Fonts List of Fonts Toner Kit to be Used Toner Kit ReplacementToner kit replacement interval Supplying Toner To replace the toner container, proceed as follows Toner Kit Replacement Replace the Waste Toner Bottle Do not cap the new waste toner bottle Cleaning Cleaning the Charger WireMain Charger Unit Cleaning the Grid Paper Feed Unit General Guide If the printer does not printIf the printing is abnormal Power Problems Interface Problems All-black printout Print Quality ProblemsCompletely blank printout Check the developer unit Black or white vertical streaks Clean the charger wireDropouts, horizontal streaks, stray dots Check the control panel Faint or blurred printing Grey background Check the paper chute and the ramp Dirt on the top edge or back of the paperCharacters out of position Check the transfer roller Indicators and Messages IndicatorsSymbolic Indicators Maintenance Messages Maintenance MessagesMessage Corrective Action DOO Vhuylfh Error Messages Error MessagesNing to ensure correct reading of the memory card 0025&$5 HUUúú Printer Symbol Correcting a Paper Jam Rear Cover FS-1750 FS-3750 Printing method ResolutionDrum cleaning Printing speed Sound pressure level at Front Dimensions Description FS-1750 FS-3750 Power requirementsPower consumption Weight Specification Paper SpecificationsTable B.1 Specifications General Guidelines Composition Selecting the Right PaperCondition of the Paper Paper Size Smoothness Basis WeightMoisture Content Thickness Caliper Special Paper Paper type Media type Overhead Projection OHP Film Table B.3 OHP Film SpecificationsTable B.4 Adhesive Label Specifications Adhesive-Backed Labels Preprinted Paper EnvelopesColored Paper Recycled Paper Parallel Interface Parallel interface communication modes Interface Signals Table C.1. Parallel Connector Pin AssignmentsPin In/out Description Reset nInit Pin Data 0 1 to Data 7 8 Pins 2 toPaper Empty PError Pin Error* nFault Pin Interface Signals RS-232C/RS-422A InterfaceRS-232C interface RS-422A interface Removing the Main Circuit Board Changing the Jumper Connector Verifying the Setting RS-422A interface voltage levels Overview of Signals RS-422ASerial Connector RDB Receive Data Pin RDA Receive Data Inverted Pin RS-232C/RS-422A Protocol Preparing an RS-232C Cable Prescribe 2e Frpo D0 commandRS-232C Cable Connection H7 Buffer nearly-empty threshold Connecting the Printer to the Computer Ctrl P \DIR Index Data On Line Index-2 Index-3 Mode Select Menu Basic Operations During Mode Selection From Previous VLH Hyhorshu