FAX Section, Modem Part | Dell 1815DN manual

System Outline

3)SDRAM : is used as Swath Buffer in Printing, Scan Buffer in Scanning, ECM Buffer in FAX receiving, and System Working Memory Area

-size : 64Mbyte(Basic) , 96Mbyte(Duplex)

4MB : System Working Memory Area and Scan Buffer

4MB : FAX Memory Receive Area

16MB : Printing System Working Memory Area

-Max Frequency : 166MHz

-store Fax Receive Memory Data by using Battery

4.1.2 FAX Section

Modem Part

BLOCK DIAGRAM

Implemented by based on Conexant DAA (Data Access Arrangement) Solution, and is roughly composed of two kinds Chip Solution

-CX86710 (SFX336): Existing Modem Chip which adds SSD (System Side Device) for interfacing between LSD and DIB of FM336Plus Core

-CX20493 (LSD) : LIU (Line Interface Unit) Chip which is controlled by SSD and satisfies each PSTN Requirements by modulating internal Configuration with connecting Tel Line.

4-2Service Manual

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Dell 1815DN service manual FAX Section, Modem Part

Contents

Dell 1815dn Page Precautions Safety Warning Electric Shock and Fire Safety Precautions Toxic material Handling Precautions Assembly / Disassembly Precautions Be careful with the high temperature part When you move the printerEnsure the printer is installed safely Disregarding this warning may cause bodily injury ESD Precautions Super Capacitor or Lithium Battery Precautions Tool for Troubleshooting Acronyms and Abbreviations SPL This test page is reproduced at 70% of the normal A4 size Sample Pattern for the Test1 A4 ISO 19752 Standard Pattern Product Specifications Product Overview Product General Specifications Remarks Sdram Items Dell Laser MFP 1815dn Remarks Copy Telephone ITU-T G3 Face Down 150Sheets/20lb Face Up 1Sheet Whql MFP System Configurations CPU Part FAX Section Modem Part Modem SFX336 specification Signal Transition of DAA Solution SSD Clkp Clkn Dibp Dibn LSD Line Interface Part Ring Sensitivity Scan Part OPE Pannel Section Printer Section Items Specification Remark RTC Core Voltage PLL Main / Hpvc System Outline Copier Section Hvps High Voltage Power Supply Telephone Section Line Regulation under 15%Output Voltage Fluctuation Method PWM Control Smps Switching Mode Power Supply Remark+5V AVG TBD Wh Fuser AC Power Control Toner Cartridge LSU Laser Scanner UnitFixing Part Fuser Transfer Ass’y Feeding Part Duty Cycle Whenever servicing the machine, you must perform as follows General Precautions on DisassemblyReleasing Plastic Latches Front Cover Take out the CassetteIf necessary, remove the Toner Cartridge Open the Cover MP Tray Assy Open the MP Tray Assy Rear Cover Take out the Duplex Unit Face Up Cover Fuser Assy Bracket Jam Holder Side Cover Left, Right Dimm Cover Scanner Assy Pull up the Scanner Assy, as shown below 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 ADF Assy Remove the Open Cover, as shown below 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 Connectors are located, as shown below Connection PCB Fuser Drive Assy 16 Fan Pick Up Roller Assy Duplex Guide Housing With Feed Roller Pull the Feed Roller from the Bushing Hvps Housing Middle Cover Assy Cover Mid Front 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 Remove the Clutch Unit, as shown below Pull up the Feed1 Roller from the Bushing, as shown below Pick Up Gear Assy & Solenoids Exit Roller 26 LSU Terminal PBA Transfer Roller Parts Alignment and Adjustments Paper path Clearing Paper Jams Clearing Document Jams If the document is jammed in the paper feed area 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 Fuser Area Jam Paper Exit Jam Alignment & Adjustments Duplex Jam Push the duplex unit to the printer Duplex Jam Paper Setting Copy Setup Fax Setup User ModeDell Laser MFP1815dn Tech Mode How to Enter Tech ModeSetting-up System in Tech Mode To enter the Tech mode Data Setup Method Do not turn off the power while upgrading process Local MachineFprt rom file Remote FAX Select the Adjust Shading at Machine Test Report Protocol List Engine Test Mode To enter the Engine Test ModeDiagnostic To enter the Engine Test mode Detail DescriptionEngine Test Mode Laser Motor OnOff Identify Sale Date Consumables and Replacement Parts Component Replacement Cycle Abnormal Image Printing and Defective Roller Heat Roller Error Messages Display Meaning Suggested solutions Toner Empty Paper Feeding Problems Check and Cause SolutionWrong Print Position 2 JAM 3 JAM 4 JAM Multi-Feeding Paper rolled in the fuser Paper rolled in the OPC Defective ADF Printing Problems malfunction DisplayDefective LCD Operation Description Not functioning of the fuser gear due to melting away Paper EmptyPaper Empty without indication Motor breaks away from its place due to gear melting away No Beep on when the Door is open Error lamp is on even when the print Door is closedDoor Open Check the insertion of the Door S/W Connect No Power Defective Motor operation Vertical Line Getting Curved Replace LSU Vertical White Line Printing Quality ProblemsVertical Black Line and Band Horizontal Black Band Black/White Spot Light Image Dark Image or a Black Uneven Density Background Above directions GhostHvps board Life of developer is expired Stains on the front Stains on back Blank Page Print out Defective MF Dial Fax & Phone ProblemsNo Dial Tone Defective FAX FORWARD/RECEIVE Defective FAX Forward Defective FAX Receive Dial Telephone lineFAX at another fax machine Another machine receiving a FAX additionally Sent to Description The automatic receiving function is not working To the FAX ModeDefective Automatic Receiving Black Copy Copy ProblemsWhite Copy Abnormal noise Defective Image Quality Defective Image Quality of PC Scan Scanning ProblemsDefective PC Scan Toner Cartridge Service Precautions on Safe-keeping of Toner CartridgeService for the Life of Toner Cartridge Open the Front Cover Signs and Measures at Poor toner cartridge Fault Signs Cause & Check White Black spotNever use usual alcohol Recycled product Fault Signs Cause & Check Solution Ghost & Image Network Problems Troubleshooting General Problems Macintosh Problems Windows Problems SyncThru Installation Problems Page8-2 Page8-3Page8-4 Page8-5 Views MainExploded Cover Assy Middle Cover Assy Front Cover Assy Rear Cover Assy Frame Assembly Fuser Drive Assy Main Drive Assy MP Assy ADF Assy Cover Platen Assy OPE Unit Scanner Assy Cassette Assy Fuser Assy Duplex UnitOptional 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