Samsung ML-1700 specifications Fusing, Heat Lamp Method, PID Method

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S U M M A RY OF PRO D U C T

4.6.4 Fusing

The temperature change of the heat roller’s surface is changed to the resistance value through the thermis- tor. By converting the voltage value, which impressed to the resistance, to the digital value through the AD converter, the temperature is decided. The AC power is controlled by comparing the target temperature to the value from the thermistor. If the value from the thermistor is out of the controlling range while controlling the fusing, the error stated in the table occurs. (For the domestic model, the Q-PID method has been applied.)

4.6.4.1 Heat Lamp Method

Error

Open heat error

Lower heat error

Description

When warming up, it has been lower than 68°C over 28 seconds

Standby:

It has been lower than 80°C over 10 seconds

Printing:

-2 consecutive pages: it has been lower than 145°C over 4 seconds.

-3 consecutive page; it has been 25°C lower

than the fixed fusing temperature over 4 seconds.

DCU

LED Displat

60All LED are blinking.

62All LED are blinking

Over heat error

It have been higher than 220°C over 3 seconds

68 All LED are blinking

 

 

 

4.6.4.2 Q-PID Method

Error

Open heat error

Lower heat error

Over heat error

Description

When preheating, it has been lower than 68°C over 15 seconds.

After finishing the preheating stage,

it has not reached 100°C (preheating stop temperature) during 15 seconds since the temperature is over 68°C.

Printing

1)When the main motor is on and after 0.92 second, it has not reached the 160°C during 20 seconds.

2)From the 2 consecutive pages, it has been 20°C lower than the fusing temperature over 4 seconds.

the error is not displayed immediately when it has been over 220°C over 3 seconds.

The temperature after the 3 seconds is checked. If it is over 240°C, it is error.

If the temperature has been higher than 220°C over 25 seconds, it is an error even through the temperature doesn’t reach 240°C.

DCU

LED Displat

60All LED are blinking

62All LED are blinking

68 All LED are blinking

Service Manual

Samsung Electronics

4-21

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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 SpecificationsEnvironmental Range Controller SpecificationElectrical Specification 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 FeedingPID Method FusingHeat Lamp Method What is the Q-PID Method? 5 LSUWhenever servicing the machine, you must perform as follows General Precautions on DisassemblyReleasing Plastic Latches 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 SetupNormal Code Error CodeCode 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 Vertical White Line Bad imageVertical Black Line and Band Horizontal Black Band Black/White SpotLight Image Dark Image or a BlackUneven Density BackgroundGhost Satins on the Face Satins on Back Blank Page Print out2 JAM Bad dischargeWrong Print Position 3 JAM 4 JAMMulti-Feeding Paper rolled in the FuserPaper rolled in the Toner Cartridge OPC Drum Malfunction All LEDs blinking Fuser ErrorAll LEDs blinking Scan Error Paper Empty without indication Not function of the gear of the fuser due to melting awayPaper Empty 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