Line Interface Part, Ring Sensitivity | Dell 1815DN specs

System Outline

4.1.3 Line Interface Part

This is Connection Part between system and PSTN(Public Switched Telephone Network), and primary circuit is usually located. Main functions are Line Interface, Telephone Connection and Line Condition Monitoring.

1 Telephone Line Connection

Modular Plug : RJ-11C

LIU PBA Modular Type : 623 PCB4-4

Line Code Length : 2500 50mm

Line Code Color : Black

ON HOOK state Characteristic 1) DC Resistance

DP Dial Mode (Direct Current 30mA) : 50 ~ 300ohm DTMF Dial Mode (Direct Current 20mA) : 50 ~ 540ohm

2) Ring Sensitivity

Ring detection Voltage : 40Vrms 150Vrms (condition :Current=25mA,Frequency=15Hz) product Margin : 30Vrms 150Vrms

Ring detection Frequency : 15.3Hz 68Hz (condition : Voltage=45Vrms,Current=25mA ) product Margin : 15Hz 70Hz

Ring detection Current : 20mA 100mA (condition : Voltage=40Vrms,Frequency=20Hz) product Margin : over 15mA

3) False Ring Sound

Ring Frequency : 750 Hz + 1020 Hz

Ring interrupt Cycle : On/Off depending on input Ring Signal Cycle.

Service Manual	4-5

Image 23

Dell 1815DN service manual Line Interface Part, Ring Sensitivity

Contents

Dell 1815dn Page Safety Warning Precautions Toxic material Electric Shock and Fire Safety Precautions Assembly / Disassembly Precautions Handling Precautions Disregarding this warning may cause bodily injury Be careful with the high temperature partWhen you move the printer Ensure the printer is installed safely Super Capacitor or Lithium Battery Precautions ESD Precautions Tool for Troubleshooting SPL Acronyms and Abbreviations This test page is reproduced at 70% of the normal A4 size Sample Pattern for the Test1 A4 ISO 19752 Standard Pattern Product Overview Product Specifications Remarks Product General Specifications Sdram Copy Items Dell Laser MFP 1815dn Remarks Telephone ITU-T G3 Face Down 150Sheets/20lb Face Up 1Sheet Whql MFP CPU Part System Configurations Modem Part FAX Section Modem SFX336 specification SSD Clkp Clkn Dibp Dibn LSD Signal Transition of DAA Solution Ring Sensitivity Line Interface Part OPE Pannel Section Scan Part Printer Section Items Specification Remark PLL Main / Hpvc RTC Core Voltage System Outline Copier Section Telephone Section Hvps High Voltage Power Supply Line Regulation under 15%Output Voltage Fluctuation Method PWM Control AVG TBD Wh Smps Switching Mode Power SupplyRemark +5V Fuser AC Power Control Transfer Ass’y Toner CartridgeLSU Laser Scanner Unit Fixing Part Fuser Duty Cycle Feeding Part Whenever servicing the machine, you must perform as follows General Precautions on DisassemblyReleasing Plastic Latches Open the Cover Front CoverTake out the Cassette If necessary, remove the Toner Cartridge Open the MP Tray Assy MP Tray Assy Take out the Duplex Unit Rear Cover Face Up Cover Fuser Assy Bracket Jam Holder Side Cover Left, Right Dimm Cover Pull up the Scanner Assy, as shown below Scanner Assy Remove the CCD Cable, as shown below Lift the ADF Assy upward to remove itRemove the four screws securing the Scan Upper Pull up the CCD Shaft and take out the Ccdm Remove the CCD Holder Remove the Open Cover, as shown below ADF Assy ADF Motor Assy Remove the Contact Rubber from the OPE Cover OPE UnitRemove the Keys from the OPE Cover Shield Controller Assy Film Cable Drive Assy Duplex Drive Assy Shield Smps Assy Connection PCB Connectors are located, as shown below Fuser Drive Assy 16 Fan Pick Up Roller Assy Pull the Feed Roller from the Bushing Duplex Guide Housing With Feed Roller Hvps Housing Cover Mid Front Middle Cover Assy MPF Housing Release the E-Ring securing the Feed2 Gear and remove it Feed Roller PartsPull up the Feed Idle Shaft and the Bushs with Spring Pull up the Feed1 Roller from the Bushing, as shown below Remove the Clutch Unit, as shown below Exit Roller Pick Up Gear Assy & Solenoids Terminal PBA 26 LSU Transfer Roller Parts Paper path Alignment and Adjustments Clearing Paper Jams If the document is jammed in the paper feed area Clearing Document Jams If the document is jammed in the paper exit area Operator Panel Message Location of Jam Go to Clearing Jams in the Paper PathsPaper Feed Jam tray Pull the tray 1 half Pull the paper straight up and out Paper Feed Jam optional trayBypass tray Jam Paper Exit Jam Fuser Area Jam Alignment & Adjustments Push the duplex unit to the printer Duplex Jam Duplex Jam User ModeDell Laser MFP1815dn Paper Setting Copy Setup Fax Setup To enter the Tech mode Tech ModeHow to Enter Tech Mode Setting-up System in Tech Mode Method Data Setup Remote FAX Do not turn off the power while upgrading processLocal Machine Fprt rom file Machine Test Select the Adjust Shading at Protocol List Report To enter the Engine Test mode Engine Test ModeTo enter the Engine Test Mode Diagnostic Laser Motor OnOff Detail DescriptionEngine Test Mode Identify Sale Date Component Replacement Cycle Consumables and Replacement Parts Heat Roller Abnormal Image Printing and Defective Roller Display Meaning Suggested solutions Error Messages Toner Empty 2 JAM Paper Feeding ProblemsCheck and Cause Solution Wrong Print Position 4 JAM 3 JAM Paper rolled in the fuser Multi-Feeding Defective ADF Paper rolled in the OPC Description Printing Problems malfunctionDisplay Defective LCD Operation Motor breaks away from its place due to gear melting away Not functioning of the fuser gear due to melting awayPaper Empty Paper Empty without indication Check the insertion of the Door S/W Connect No Beep on when the Door is openError lamp is on even when the print Door is closed Door Open Defective Motor operation No Power Replace LSU Vertical Line Getting Curved Vertical White Line Printing Quality ProblemsVertical Black Line and Band Black/White Spot Horizontal Black Band Dark Image or a Black Light Image Background Uneven Density Above directions GhostHvps board Life of developer is expired Stains on the front Blank Page Print out Stains on back Defective MF Dial Fax & Phone ProblemsNo Dial Tone Defective FAX Forward Defective FAX FORWARD/RECEIVE Another machine receiving a FAX additionally Sent to Defective FAX ReceiveDial Telephone line FAX at another fax machine Description The automatic receiving function is not working To the FAX ModeDefective Automatic Receiving Black Copy Copy ProblemsWhite Copy Defective Image Quality Abnormal noise Defective Image Quality of PC Scan Scanning ProblemsDefective PC Scan Open the Front Cover Toner Cartridge ServicePrecautions on Safe-keeping of Toner Cartridge Service for the Life of Toner Cartridge Signs and Measures at Poor toner cartridge Recycled product Fault Signs Cause & CheckWhite Black spot Never use usual alcohol Fault Signs Cause & Check Solution Ghost & Image General Problems Network Problems Troubleshooting Windows Problems Macintosh Problems SyncThru Installation Problems Page8-5 Page8-2Page8-3 Page8-4 Views MainExploded Cover Assy Middle Cover Assy Front Cover Assy Rear Cover Assy Frame Assembly Fuser Drive Assy Assy Main Drive MP Assy ADF Assy Cover Platen Assy OPE Unit Scanner Assy Cassette Assy Fuser Assy UnitOptional Duplex Parts ListModel Dell 1815dn Rear Cover Assy Fuser Drive Assy MP Assy Cover Platen Scanner Assy Fuser Assy BELT-TIMMING Block Diagram Connection Diagram Dell 1815dn recommended spare part list Modems, Accessories