HP 8000 N, 8000 DN, Mopier 240 manual Maintenance and Adjustments, Functional Overview

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4 Maintenance and Adjustments

Cleaning the Printer and Accessories . . . . . . . . . . . . . . . . . . . . . .82

Cleaning Spilled Toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Preventative Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Tray Adjustment Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Tray 4 (2000-sheet Input Tray) Adjustment Procedure . . . . . . . . .88

5 Functional Overview

Printer Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . .92 Power Distribution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93 AC Power Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94 Overcurrent/Overvoltage Protection . . . . . . . . . . . . . . . . . . . .94 High Voltage Power Distribution . . . . . . . . . . . . . . . . . . . . . . .95 Formatter System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96 DC Controller System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99 Laser and Scanner Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . .99 Paper Motion Monitoring and Control . . . . . . . . . . . . . . . . . . .99 Clutches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99 Engine Test Microswitch. . . . . . . . . . . . . . . . . . . . . . . . . . . .100 Motors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 Image Formation System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101 Toner Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102 Drum Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104 Drum Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105 Image Writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106 Image Developing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108 Image Transferring and Media Separation . . . . . . . . . . . . . .110 Image Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111 Paper Paths and Components . . . . . . . . . . . . . . . . . . . . . . . . . .112 Printer, Duplexer, and Envelope Feeder. . . . . . . . . . . . . . . .112 Paper Size Switches (Trays 2 and 3) . . . . . . . . . . . . . . . . . .115 Printing from Tray 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115 Printing from Trays 2 and 3. . . . . . . . . . . . . . . . . . . . . . . . . .115 Printing from the Envelope Feeder . . . . . . . . . . . . . . . . . . . .116 Printing with the Duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . .116 Printing from the Custom Height and Size Paper Tray . . . . .116 2000-sheet Input Tray (Tray 4) Components . . . . . . . . . . . .117 2000-Sheet Input Tray Operation . . . . . . . . . . . . . . . . . . . . .119 2 x 500-sheet Input Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . .122 2 x 500-sheet Input Tray Operation . . . . . . . . . . . . . . . . . . .124 7-bin Tabletop Mailbox Components . . . . . . . . . . . . . . . . . .126 7-bin Tabletop Mailbox Operation. . . . . . . . . . . . . . . . . . . . .128 8-bin Mailbox Components . . . . . . . . . . . . . . . . . . . . . . . . . .132 8-bin Mailbox Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .135 Finisher Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137 Stapler Unit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

C4085-91087

Table of Contents ix

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Contents English Page Warranty Conventions Troubleshooting Maintenance and AdjustmentsRemoval and Replacement Product InformationParts and Diagrams Subject IndexC4085-91087 Table of Contents Site Requirements Operating OverviewMaintenance and Adjustments Functional OverviewRemoval and Replacement Page Xii C4085-91087 Troubleshooting Parts and DiagramsIndex
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