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Phaser 7500 Printer Service Manual
Theory of Operation
Electric Charge (Drum)
Imaging Unit (PL8.1.4)
The Drum unit forms electrostatic latent images and toner images. One is for each
color - Yellow, Magenta, Cyan, and Black.
Other than the Drum itself, it is made up of the following main components.
•
BCR
- Charges the Drum.
•
Cleaning Blade
- Cleans any toner remaining on the Drum after the transfer
of toner image onto the paper.
•
CRUM
- This is a non-volatile memory that stores the machine data.
Erase Lamp Unit (PL8.1.5)
The Erase Lamp Unit photoelectrically discharges the Drum surface after the toner
image has been transferred onto the Transfer Belt. One is allocated to each color -
Yellow, Magenta, Cyan, and Black.
s7500-367
Cleaning Blade
BCR
CRUM
Erase Lamp Unit
Drum
Summary of Contents for PHASER 7500
Page 1: ...Phaser 7500 Color Printer Phaser 7500 Service Manual Xerox Internal Use Only ...
Page 2: ......
Page 60: ...1 30 Phaser 7500 Printer Service Manual General Information ...
Page 448: ...3 310 Phaser 7500 Printer Service Manual Error Messages and Codes ...
Page 484: ...4 36 Phaser 7500 Printer Service Manual General Troubleshooting ...
Page 544: ...5 60 Phaser 7500 Printer Service Manual Print Quality Troubleshooting ...
Page 545: ...6 Chapter Adjustments and Calibrations In this chapter Adjustments Calibrations ...
Page 554: ...6 10 Phaser 7500 Printer Service Manual Adjustments and Calibrations ...
Page 562: ...7 8 Phaser 7500 Printer Service Manual Cleaning and Maintenance ...
Page 900: ...9 118 Phaser 7500 Printer Service Manual Parts List ...
Page 958: ...10 58 Phaser 7500 Printer Service Manual Plug Jack and Wiring Diagrams ...
Page 980: ...11 22 Phaser 7500 Printer Service Manual Reference ...
Page 990: ...I 10 Phaser 7500 Printer Service Manual Index ...
Page 991: ......