Samsung ML-1200 Cause and solution of Bad image, Vertical Black Line and Band, Description

Page 18

Troubleshooting

4-2 The cause and solution of Bad image

4-2-1 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

 

or deformed Doctor-blade.

 

cartridge, replace the developer and try to

 

 

 

print out.

2.

Scratched surface of the discharge roller

2.

Replace the transfer roller if occurred as

 

in the developer, or heavily accumulated

 

No. 3.

 

foreign matters between the discharge

 

 

 

roller and fur transfer roller/ charge roller.

 

 

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

4-2-2 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

 

 

the developer roller and blade.

2.

Foreign matter in the LSU : Open the

(In case the life of the developer has

 

cover of LSU and clean with a cotton

been expired, white lines occur in front of

 

swab on the surface of the reflex mirror.

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.

 

 

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, check to

 

 

see if the weight of the developer is

 

 

below 670g. If so, replace the developer

 

 

cartridge.

 

 

 

Samsung Electronics

4-5

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Contents Laser Printer Version no This manual is stated and provided for service description Safety Precautions Safety PrecautionsPrecautions on Disassembly and Reassembly Replacing PrecautionsTools for Troubleshooting Electronic ScalePaper ML-1210 ML-1220M ML-1250 EngineController TonerCover Assembly Front CoverOther Covers LED Panel PBA LSULaser Scanning UnitMotor Assembly Transfer RollerFuser Assembly Hvps BoardThermostat and Halogen Lamp Smps Board Main Board and Sensor Board Cause and solution of the bad discharge How to use DCUCause and solution of Bad image Cause and solution of the malfunctionHow to use DCU DCU SetupCode Self Diagnostic Mode PTL Test Self Test ButtonPaper Path Layout Fan TestVertical Black Line and Band Cause and solution of Bad imageCheck and Cause Solution Vertical White LineHorizontal Black Band Black/White SpotLight Image Dark Image or a BlackUneven Density BackgroundGhost Satins on the Face Terminal of the supply rollerDescription Digital Printer Satins on Back Blank Page Print outCause and solution of the bad discharge Wrong Print Position2 JAM 3 JAM 4 JAMMulti-Feeding Paper rolled in the fuser7 OPC Cause and solution of the malfunction All LEDs blinking Fuser ErrorAll LEDs blinking Scan Error 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 Toner Cartridge Service Precautions on Safe-keeping of Toner CartridgeService for the Life of Toner Cartridge Partially blank Fault Signs Cause & Check Solution Light imageSigns and Measures at Poor toner cartridge ImageFault Signs Cause & Check Solution White Black spot Recycled productFault Signs Cause & Check Solution Ghost & Image Cause and solutions of 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 Exploded Views and Parts List Service Parts ListExploded Views and Parts List Front Assembly No DescriptionEngine/Frame Lower Assembly 15-2 15-1 14-2 Shield Engine Unit Assembly RX Drive Assembly Plate-Upper Unit AssemblyBlock Diagram Block DiagramGDIBlock DiagramPCL PanelConnection Diagram Connection DiagramGDIConnection DiagramPCL LSURepair Manual Diagram 1250 Connection Diagram GDI Connection DiagramML-1210/ML-1220MPCL Connection DiagramML-1250 PCLSchematic Diagrams Main Circuit Diagram 2/5 Main Circuit Diagram 3/5 Main Circuit Diagram 4/5 Main Circuit Diagram 5/5 PC L Main Circuit Diagram 1/9 PCL Main Circuit Diagram 2/9 PCL Main Circuit Diagram 3/9 PCL Main Circuit Diagram 4/9 PCL MainCircuit Diagram 5/9 PCL Main Circuit Diagram 6/9 PCL Main Circuit Diagram 7/9 PCL Main Circuit Diagram 8/9 PCL Main Circuit Diagram 9/9 Hvps Circuit Diagram 1/2 Hvps Circuit Diagram 2/2 Smps Circuit Diagram No Marking Resistor 1/4W-J 5% Panel Circuit Diagram Page Samsung Electronics Digital Printing CS Group Contents
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ML-1200, ML-1210 specifications

The Samsung ML-1200 is a noteworthy monochrome laser printer designed to deliver impressively sharp and high-quality printouts, making it a popular choice for both home and small office environments. While it boasts a compact design, the ML-1200 does not compromise on performance, offering a variety of features that enhance productivity and ease of use.

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