Samsung SCX-4100 specifications Horizontal Black Bands, Black/White Spot

Page 67

Troubleshooting

7.1.3 Horizontal Black Bands

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

1.Dark or blurry horizontal stripes occur in the printing periodically. (These may occur at regular intervals down the page.)

Check and Cause

 

Solution

 

 

 

1. Bad contacts on the toner cartridge high

1.

Clean all HV terminals on the cartridge and

voltage terminals.

 

 

on the set frame. Ensure all toner or paper

 

 

 

 

dust particles are removed.

2. The rollers in the toner cartridge may be

2.

Clean the right Gear that has relatively

contaminated.

 

 

 

small tooth gap on the OPC.

Charge roller

=

37.7 mm

 

 

Supply roller

=

47.8 mm

 

 

Develop roller =

35.2 mm

 

 

Transfer roller

=

45.3 mm

 

 

 

 

 

3.

If the problem persists replace the toner

 

 

 

 

cartridge.

 

 

 

 

 

7.1.4 Black/White Spot

• Description

Digital Printer

Digital Printer

Digital Printer

Digital Printer

Digital Printer

1.Dark or blurry black spots occur periodically in the printing.

2.White spots occur periodically in the printing.

Check and Cause

Solution

 

 

1. If dark or blurry black spots occur periodi-

1. Print several OPC cleaning Mode Prints

cally, the rollers in the Developer may be

and then run the Self-test 2 or 3 times.

contaminated with foreign matte or paper

 

particles.

 

( Charge roller : 37.7 mm interval

 

OPC drum : 75.5 mm interval)

 

2. If faded areas or voids occur in a black

2. 75.5 mm repetition: Examine the surface of

image at intervals of 75.5 mm, or black

the OPC drum and carefully clean with a

spots occur elsewhere, the OPC drum

soft, lint free cloth. If unsuccessful replace

surface is damaged.

the cartridge.

 

37.7mm repetition: Replace the toner car-

 

tridge

3. If a black image is partially broken, the

3. The transfer roller guarantees 60,000

transfer voltage is abnormal or the

sheets printing. If the roller's life is expired,

transfer roller's life has expired.

replace it.

 

Note. Cleaning the inside of the set to

 

remove excess toner particles or paper

 

dust will reduce the occurrence of this

 

problem..

 

 

Service Manual

7-2

Samsung Electronics

Page 66 Page 68
Image 67
Page 66 Page 68
Contents Block Diagram PrecautionsSpecifications TroubleshootingHttp//itself.sec.samsung.co.kr Safety Warning PrecautionsToxic material Electric Shock and Fire Safety PrecautionsAssembly / Disassembly Precautions Handling PrecautionsDisregarding this warning may cause bodily injury Be careful with the high temperature partESD Precautions Tool for Troubleshooting Acronyms and Abbreviations IPC Select a location for the printer 1 A4 5% Pattern Sample Pattern for the Test2 A4 2% Pattern 3 A4 IDC 5% Patten Memo General Specifications SpecificationsScan Specification Print SpecificationCopy Copy SpecificationPaper Handiling Specification Whql Other SpecificationMemo Front View Printer ComponentsRear View Control Panel System Layout Fixing PartFuser Paper Feed MechanismTransfer Ass’y Drive Ass’yCIS Driver Circuit Safety Relevant FactsScanner Unit Scan Image ControllerLSU Laser Scanner Unit Toner Cartridge Main PBA Sensor input circuit Asic Chorus2Flash Memory SdramDC FAN / Solenoid Driver Paper Feeding, Toner Cartridge SensingPaper Exit Sensing Cover Open SensingSmps & Hvps HVPSHigh Voltage Power Supply Length of Power Cord 1830 ± 50mm Power Switch Fitted Smps Switching Mode Power SupplyRated Power Output Consumption PowerSafty Requrement Fuser AC Power ControlFeature Environment ConditionFeeding Engine F/WDrive Transfer5 LSU FusingHeat Lamp Method Memo Releasing Plastic Latches General Precautions on DisassemblyWhenever servicing the machine, you must perform as follows Front and Rear Cover Units Side Covers Remove Scanner Ass’y Scanner Ass’yDismantle Scanner Ass’y Spring Pulley Idle ETC Belt Middle Cover FuserHeat Lamp Type Remove 4 screws and divide the Fuser into two parts LSU Exit RollerFan Engine Shield Ass’y Smps Transfer Roller Feed Roller Remove the Feed Roller and Feed Roller1, as shown below Pick Up Roller & Solenoid Memo To enter the Engine Test mode Engine Test ModeTo enter the Engine Test Mode DiagnosticPaper Path Paper Tray Clearing Paper JamsPaper Exit Area Manual Feeder Fuser Area or Around the Toner CartridgeClearing the Memory Printing the System Data ListClearing the Drum LCD Status Display by Each Error Consumables and Replacement PartsRoller Defective image Typical defect Periodic Defective ImageVertical Black Lines and Bands Printing Problems Causes and SolutionsVertical White Line Black/White Spot Horizontal Black BandsDark Image or a Black Light ImageBackground Uneven DensityGhost Digital Printer Ghost Stains on the FaceBlank Page Print out Stains on BackWhite Copy Copy ProblemsBlack Copy Defective Image Quality Abnormal noiseWrong Print Position Paper Feed problems Causes and Solutions2 JAM 4 JAM 3 JAMPaper rolled in the fuser Multi-FeedingPaper rolled on the OPC Drum Fuser Error Printer Faults Causes and SolutionsLSU Error Paper Empty Fuser gear melts due to overheating causing Paper JamCover Open Paper Empty without indicationNo error message when the cover is open Defective motor operation No PowerPrinted Vertical Lines become curved Standard of guarantee for consumable parts Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Service for the Life of Toner CartridgeEnded Signs and Measures of Poor toner cartridgeFault Signs Cause & Check Solution Fault Signs Cause & Check Solution Ghost & Image Printer is not working Software Problems Causes and SolutionsNot working with the message insufficient printer Abnormal Printing How to delete the data in the spool manager Spool ErrorMemo Exploded Views and Parts List Main Assembly Main Assembly Parts List Frame Assembly Description SEC.Code ’ty Remark Frame Unit Assembly Parts ListFrame Unit Assembly Parts ListCont Scanner Unit Assembly Scanner Unit Assembly Parts List Fuser Unit Assembly Fuser Unit Assembly Parts List WASHER-PLAIN Middle Cover Unit Assembly ’ty Remark Middle Cover Unit Assembly Parts ListDrive Unit Assembly Parts List Drive Unit AssemblyCassette Unit Assembly Cassette Unit Assembly Parts List Block Diagram 10.10Connection Diagram
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