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2-4
Phaser 6121MFP Service Manual
Theory of Operation
6. Transfer Roller Cleaning
The residual toner left on the surface of the Transfer Roller is removed by an
alternating DC charge that transfers the waste toner back to the Transfer Belt
for collection by the Transfer Belt cleaning blade.
7. Transfer Belt Cleaning
A charge is applied to the Transfer Belt. By potential difference, residual toner
on the surface of the Transfer Belt is collected for cleaning. The toner scraped
off the surface of the photo conductor is collected in the Imaging Unit.
8. Fusing
Toner is permanently fused to the paper by the combination of heat and
pressure applied by the Fuser.
System Control
The following diagram shows the major operating components and their basic
connection to each other.
Transfer Belt
2nd Transfer Roller
s6121mfp-106
s6121mfp-280
Engine Control Board
Image Processor Board
CPU
Control Panel
Scanner
TC/Y
TC/K
TC/C
TC/M
Image Processing
Fusing
Image Process
Paper Pick-Up/
Transport
Laser Unit
Image Bus Line
Control System Line
FAX
Power Supply/
High Voltage
Summary of Contents for PHASER 6121MFP
Page 1: ...Phaser 6121MFP Multi Function Printer Phaser 6121MFP Service Manual...
Page 2: ......
Page 12: ...x Phaser 6121MFP Service Manual Contents...
Page 22: ...xx Phaser 6121MFP Service Manual...
Page 42: ...1 20 Phaser 6121MFP Service Manual General Information...
Page 106: ...2 64 Phaser 6121MFP Service Manual Theory of Operation...
Page 109: ...Phaser 6121MFP Service Manual 3 3 Error Messages and Codes s6121mfp 372...
Page 194: ...3 88 Phaser 6121MFP Service Manual Error Messages and Codes...
Page 306: ...6 44 Phaser 6121MFP Service Manual Adjustments and Calibrations...
Page 405: ...Phaser 6121MFP Service Manual 8 85 Service Parts Disassembly 3 Remove the spring s6121mfp 255...
Page 432: ...8 112 Phaser 6121MFP Service Manual Service Parts Disassembly...
Page 437: ...Phaser 6121MFP Service Manual 9 5 Parts List...
Page 477: ...Phaser 6121MFP Service Manual 9 45 Parts List...
Page 488: ...9 56 Phaser 6121MFP Service Manual Parts List...
Page 489: ...10 Chapter Wiring In this chapter Plug Jack Designations and Locator Diagrams Wiring Diagrams...
Page 530: ...1 6 Phaser 6121MFP Service Manual Index...
Page 531: ......