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Phaser 4400 Laser Printer Service Manual
Exposure
The Laser Assembly generates an invisible beam of cohesive light, called a laser
beam. Image data received from the Engine Logic Board modulates this beam,
turning it on and off according to image information.
Through the use of a series of rotating and stationary mirrors within the Laser
Assembly, the beam scans the negatively charged drum surface. Whenever the print
controller sends a command to print a black pixel, the laser switches on long enough
to shine onto the drum at a single pixel point. That point is now discharged and is less
negative, relative to the surrounding negative charge.
Development
The toner in the Print Cartridge has a magnetic property that causes it to adhere to the
Magnetic Roller. The Charge Metering Blade (CM Blade) spreads the toner into a
very thin layer on the Magnetic Roller. Friction between the Magnetic Roller and the
CM Blade generates a small electrical charge that is transferred to the toner.
The surface of the Magnetic Roller is made up of a thin sheet of conductive material.
The HVPS PWB supplies the Magnetic Roller with two voltages: a negative DC
voltage and an AC voltage. The DC voltage is the voltage that is used to transfer toner
from the Magnetic Roller to the surface of the drum. The AC voltage agitates the
toner on the Magnetic Roller and makes toner transfer easier.
The Magnetic Roller maintains an electrical potential relative to the charged surface
of the drum. Negative charged areas of the drum have a lower electrical potential, or
higher relative negative value, than the Magnetic Roller. Discharged areas of the
drum have a higher electrical potential, or lower relative negative value, than the
Magnetic Roller. A discharged point on the surface of the drum now appears less
negative, or positive, relative to the negative charge on the Magnetic Roller.
Содержание 4400DT - Phaser B/W Laser Printer
Страница 1: ...Service Manual P h a s e r L a s e r P r i n t e r 4400...
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Страница 37: ...1 20 Phaser 4400 Laser Printer Service Manual...
Страница 140: ...Phaser 4400 Laser Printer Service Manual 3 43 Test Print...
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Страница 184: ...Phaser 4400 Laser Printer Service Manual 4 3...
Страница 190: ...Phaser 4400 Laser Printer Service Manual 4 9 Print Engine NVRAM There is no single reset for the Print Engine NVRAM...
Страница 191: ...4 10 Phaser 4400 Laser Printer Service Manual...
Страница 193: ...5 2 Phaser 4400 Laser Printer Service Manual...
Страница 212: ...Phaser 4400 Laser Printer Service Manual 6 19 Retard Roller Assembly...
Страница 214: ...Phaser 4400 Laser Printer Service Manual 6 21 Retard Roller Friction Clutch Assembly...
Страница 218: ...Phaser 4400 Laser Printer Service Manual 6 25 Motor Assembly...
Страница 220: ...Phaser 4400 Laser Printer Service Manual 6 27 Connector and Socket Guide...
Страница 231: ...6 38 Phaser 4400 Laser Printer Service Manual Feeder PWB...
Страница 239: ...6 46 Phaser 4400 Laser Printer Service Manual MPT Pick Up Cam MPT Roller Assembly...
Страница 247: ...6 54 Phaser 4400 Laser Printer Service Manual MPT No Paper Sensor...
Страница 251: ...6 58 Phaser 4400 Laser Printer Service Manual Paper Handler Assembly Paper Handler Assembly Removal...
Страница 257: ...6 64 Phaser 4400 Laser Printer Service Manual Registration Springs Rubber Registration Roller...
Страница 261: ...6 68 Phaser 4400 Laser Printer Service Manual Fuser Harness Assembly...
Страница 263: ...6 70 Phaser 4400 Laser Printer Service Manual Exit Chute Assembly...
Страница 268: ...Phaser 4400 Laser Printer Service Manual 6 75 Mid 1 Roller Assembly Mid 2 Roller Assembly...
Страница 271: ...6 78 Phaser 4400 Laser Printer Service Manual Heat Rod Fuser Upper Cover...
Страница 279: ...6 86 Phaser 4400 Laser Printer Service Manual Drive Gear Assembly...
Страница 286: ...Phaser 4400 Laser Printer Service Manual 6 93 HVPS PWB...
Страница 293: ...6 100 Phaser 4400 Laser Printer Service Manual Duplex Harness Assembly...
Страница 296: ...Phaser 4400 Laser Printer Service Manual 6 103 Exit Tray Paper Weight Exit Tray...
Страница 309: ...6 116 Phaser 4400 Laser Printer Service Manual Locking Tab Exit Gear and Bearings Mid Roller Assembly...
Страница 330: ...Phaser 4400 Laser Printer Service Manual 6 137 Size Sensor Housing Assembly 4...
Страница 341: ...6 148 Phaser 4400 Laser Printer Service Manual Upper Chute Assembly...
Страница 345: ...6 152 Phaser 4400 Laser Printer Service Manual Locking Tab and Belt Retainer Flange Middle Roller Assembly...
Страница 364: ...Phaser 4400 Laser Printer Service Manual 6 171 Clutch and Bearing Bottom Roller Assembly...
Страница 366: ...Phaser 4400 Laser Printer Service Manual 6 173 Feed Roller Shaft Feed Roller Assembly 1...
Страница 368: ...Phaser 4400 Laser Printer Service Manual 6 175 Feed Roller Shaft Feed Roller Assembly 2...
Страница 370: ...Phaser 4400 Laser Printer Service Manual 6 177 Feed Belts...
Страница 371: ...6 178 Phaser 4400 Laser Printer Service Manual...
Страница 374: ...Phaser 4400 Laser Printer Service Manual 7 3 PL 1 1 Covers 1 of 2 Exploded View...
Страница 376: ...Phaser 4400 Laser Printer Service Manual 7 5 PL 1 2 Covers 2 of 2 Exploded View...
Страница 378: ...Phaser 4400 Laser Printer Service Manual 7 7 PL 2 1 Tray 1 1 of 2 Exploded View...
Страница 380: ...Phaser 4400 Laser Printer Service Manual 7 9 PL 2 2 Tray 1 2 of 2 Exploded View...
Страница 382: ...Phaser 4400 Laser Printer Service Manual 7 11 PL 3 1 Paper Feeder Exploded View...
Страница 384: ...Phaser 4400 Laser Printer Service Manual 7 13 PL 4 1 MPT Chute Exploded View...
Страница 386: ...Phaser 4400 Laser Printer Service Manual 7 15 PL 5 1 Paper Handler Assembly Exploded View...
Страница 388: ...Phaser 4400 Laser Printer Service Manual 7 17 PL 6 1 Chute Transport and Fuser Exploded View...
Страница 390: ...Phaser 4400 Laser Printer Service Manual 7 19 PL 7 1 Exit Exploded View...
Страница 392: ...Phaser 4400 Laser Printer Service Manual 7 21 PL 8 1 Drive and Xerographics Exploded View...
Страница 394: ...Phaser 4400 Laser Printer Service Manual 7 23 PL 9 1 Frame and Size Sensor Exploded View...
Страница 396: ...Phaser 4400 Laser Printer Service Manual 7 25 PL 10 1 Electrical Exploded View...
Страница 398: ...Phaser 4400 Laser Printer Service Manual 7 27 PL 11 1 550 Sheet Feeder 1 of 2 Exploded View...
Страница 400: ...Phaser 4400 Laser Printer Service Manual 7 29 PL 11 2 550 Sheet Feeder 2 of 2 Exploded View...
Страница 402: ...Phaser 4400 Laser Printer Service Manual 7 31 PL 12 1 Envelope Feeder 1 of 2 Exploded View...
Страница 404: ...Phaser 4400 Laser Printer Service Manual 7 33 PL 12 2 Envelope Feeder 2 of 2 Exploded View...
Страница 406: ...Phaser 4400 Laser Printer Service Manual 7 35 PL 13 1 Duplex 1 of 2 Exploded View...
Страница 408: ...Phaser 4400 Laser Printer Service Manual 7 37 PL 13 2 Duplex 2 of 2 Exploded View...
Страница 410: ...Phaser 4400 Laser Printer Service Manual 7 39 PL 14 1 Stacker 1 of 2 Exploded View...
Страница 412: ...Phaser 4400 Laser Printer Service Manual 7 41 PL 14 2 Stacker 2 of 2 Exploded View...
Страница 413: ...7 42 Phaser 4400 Laser Printer Service Manual...
Страница 443: ...8 30 Phaser 4400 Laser Printer Service Manual Duplex Unit Paper Path...
Страница 459: ...8 46 Phaser 4400 Laser Printer Service Manual Major Components of the Option Feeder Assembly...
Страница 465: ...9 6 Phaser 4400 Laser Printer Service Manual Base Engine P J Maps Base Engine P J Location Map 1 of 2...
Страница 466: ...Phaser 4400 Laser Printer Service Manual 9 7 Base Engine P J Location Map 2 of 2 910 1 910 1...
Страница 467: ...9 8 Phaser 4400 Laser Printer Service Manual Base Engine Block Diagrams Base Engine Block Diagram 1 of 4 1...
Страница 468: ...Phaser 4400 Laser Printer Service Manual 9 9 Base Engine Block Diagram 2 of 4 2...
Страница 469: ...9 10 Phaser 4400 Laser Printer Service Manual Base Engine Block Diagram 3 of 4 3...
Страница 470: ...Phaser 4400 Laser Printer Service Manual 9 11 Base Engine Block Diagram 4 of 4 4...
Страница 471: ...9 12 Phaser 4400 Laser Printer Service Manual Block Diagram Tray 1 Tray 2 and Tray 3...
Страница 474: ...Phaser 4400 Laser Printer Service Manual 9 15 Engine Logic Board to Stack Full Sensor and Rear Interlock Switch...
Страница 476: ...Phaser 4400 Laser Printer Service Manual 9 17 Engine Logic Board to Size 1 PWB to Feeder PWB Diagram 2 of 2...
Страница 479: ...9 20 Phaser 4400 Laser Printer Service Manual Engine Logic Board to Laser Assembly...
Страница 480: ...Phaser 4400 Laser Printer Service Manual 9 21 Image Processor Board to Front Panel...
Страница 482: ...Phaser 4400 Laser Printer Service Manual 9 23 550 Sheet Feeder P J Map 550 Sheet Feeder P J Map...
Страница 483: ...9 24 Phaser 4400 Laser Printer Service Manual 550 Sheet Feeder Block Diagram 1 of 2...
Страница 484: ...Phaser 4400 Laser Printer Service Manual 9 25 550 Sheet Feeder Block Diagram 2 of 2...
Страница 486: ...Phaser 4400 Laser Printer Service Manual 9 27 Duplex Unit P J Map...
Страница 487: ...9 28 Phaser 4400 Laser Printer Service Manual Duplex Unit Block Diagram...
Страница 488: ...Phaser 4400 Laser Printer Service Manual 9 29 Engine Logic Board to Duplex PWB...
Страница 491: ...9 32 Phaser 4400 Laser Printer Service Manual Stacker P J Map...
Страница 492: ...Phaser 4400 Laser Printer Service Manual 9 33 Stacker Block Diagram...
Страница 493: ...9 34 Phaser 4400 Laser Printer Service Manual Engine Logic Board to Stacker PWB...
Страница 495: ...9 36 Phaser 4400 Laser Printer Service Manual Stacker PWB to Drive Motor Assembly and Offset Motor Assembly...
Страница 497: ...9 38 Phaser 4400 Laser Printer Service Manual Envelope Feeder P J Map...
Страница 498: ...Phaser 4400 Laser Printer Service Manual 9 39 Envelope Feeder Block Diagram...
Страница 500: ...Phaser 4400 Laser Printer Service Manual 9 41 Envelope PWB to Envelope Exit Sensor Assembly No Paper Sensor and Clutch...
Страница 501: ...9 42 Phaser 4400 Laser Printer Service Manual...
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