Samsung ML-1700 specifications Bad image, Vertical Black Line and Band, Vertical White Line

Page 66

T RO U B L E S H O OT I N G

77. Troubleshooting

7.1 Bad image

7.1.1 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 or cleaning-

 

cartridge, replace the developer and try to

 

blade.

 

print out.

2.

Scratched surface of the discharge roller

2.

Replace the transfer roller if occurred as

 

in the developer.

 

No. 3.

3.Partly depression or deformation on the surface of the transfer roller.

7.1.2 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 Burr and foreign sub-

3.

No 3. : Remove the foreign matter and

 

stances are on the window of the devel-

 

burr of the exposure window.

 

oper 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.

 

 

 

 

Service Manual

Samsung Electronics

7-1

Page 65 Page 67
Image 66
Page 65 Page 67
Contents Troubleshooting PrecautionsSpecifications Block DiagramElectronics 2003 Precautions Precaution related noxious material Precaution related electric shock or firePrecaution related handling the machine Precaution when assembly/disassemblyESD Precautions Tool for Troubleshooting DCUDiagnostic Control Unit DriverAcronyms and Abbreviations LSUSample Pattern for the Test 1 A4 5% Pattern2 A4 2% Pattern 3 A4 IDC Pattern Samsung Electronics Specifications General SpecificationsController Specification Electrical SpecificationEnvironmental Range Paper Handling Specifications Toner Cartridge DeveloperSpecifications Printer Components Front ViewRear View Inside ViewOn Line/Error and Toner Save LEDs Control PanelCancel button Printing demoSystem Layout FuserDriver Ass’y Feeding PartTransfer Ass’y Fixing PartFuserSafety Relevant Facts LSU Laser Scanner UnitToner Cartridge Main Pbaspl Model Sdram Asic JupiterFlash Memory Sensor input circuitCover Open Sensing Paper Feeding, Toner Cartridge SensingPaper Exit Sensing DC FAN / Solenoid DrivingMain PBA PCL Model Sdram Regulator Clock Generator Buffer Motor DriveML-1710 ML-1510 ML-1750 AsicSPGPm MemorySPGPm Internal Block Diagram AHB BUSSmps & Hvps HVPSHigh Voltage Power Supply Consumption Power SMPSSwitching Mode Power SupplyRated Power Output Length of Power Cord 1830 ± 50mm Power Switch UseFuser AC Power Control Transfer Engine F/WDrive FeedingFusing Heat Lamp MethodPID Method What is the Q-PID Method? 5 LSUGeneral Precautions on Disassembly Releasing Plastic LatchesWhenever servicing the machine, you must perform as follows Top Cover Fuser FuserHeat Lamp TypeFuserQ-PID Type Unplug Thermister Harness from the Fuser cover Exit Roller LSUFan Driver Ass’yEngine Shield Ass’y Main PBASmps Transfer Roller Feed Roller Pick Up Roller & Solenoid How to use DCU DCU SetupError Code CodeNormal Code Self Diagnostic Mode Code Description13 THV+ TRIGGER. ALL HV Self Test Button Functi on Enter Up/ Dow n Stop Remar kPaper Path Paper OutFace UpClearing Paper Jams Paper Exit Area JAM2Paper Feed Area JAM0 Around the Toner Cartridge JAM1Tips for Avoiding Paper Jams Sample Pattern Printing a DemoPrinting a cleaning sheet Consumables and Replacement Parts LED Status Display by Each ErrorPeriodic Defective Image Roller Defective image Typical defectSamsung Electronics Bad image Vertical Black Line and BandVertical White Line Horizontal Black Band Black/White SpotLight Image Dark Image or a BlackUneven Density BackgroundGhost Satins on the Face Satins on Back Blank Page Print outBad discharge Wrong Print Position2 JAM 3 JAM 4 JAMMulti-Feeding Paper rolled in the FuserPaper rolled in the Toner Cartridge OPC Drum All LEDs blinking Fuser Error All LEDs blinking Scan ErrorMalfunction Not function of the gear of the fuser due to melting away Paper EmptyPaper Empty without indication No lamp on when the cover is open Cover OpenNo Power Defective motor operationVertical Line Getting Curved Service for the Life of Toner Cartridge Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Redistributing TonerSigns and Measures at Poor toner cartridge ImageFault Signs Cause & Check Solution White Black spot Bad Environment of The Software Printer is not workingUtilities program Abnormal Printing Spool Error How to delete the data in the spool managerExploded Views and Parts List 11-1 11-2 11-3 Main Assembly Parts List Unit Assembly Frame Unit Assembly Parts List Frame Unit Assembly Parts ListCont Drive Unit Assembly Drive Unit Assembly Parts ListCassette Unit Assembly Cassette Unit Assembly Parts List Fuser Unit Assembly Fuser Unit Assembly Parts List Samsung Electronics 9Block Diagram 9.1 PCL Model SPL Model Motor DR PART’SConnection Diagram PCL ModelComputer Schematic Diagrams PCL Main Circuit Diagram 1/7PCL Main Circuit Diagram 2/7 PCL Main Circuit Diagram 3/7 PCL Main Circuit Diagram 4/7 PCL Main Circuit Diagram 5/7 PCL Main Circuit Diagram 6/7 PCL Main Circuit Diagram 7/7 SPL Main Circuit Diagram 1/5 SPL Main Circuit Diagram 2/5 SPL Main Circuit Diagram 3/5 SPL Main Circuit Diagram 4/5 SPL Main Circuit Diagram 5/5 Hvps Circuit Diagram 1/2 THVHvps Circuit Diagram 2/2 4KVSmps Circuit Diagram 110V 1/2 Smps Circuit Diagram 110V 2/2 CON2-14MANUAL CON2-25EXIT
Top Page Image Contents