Toner Recycling.........................................................................................................................................334
Paper Feed.....................................................................................................................................................335
Overview of Paper Feed...........................................................................................................................335
Paper Feed Drive.......................................................................................................................................336
Pick-Up and Separation Roller Release Mechanism..............................................................................336
Paper Lift.....................................................................................................................................................337
Paper End Detection..................................................................................................................................338
Paper Registration.....................................................................................................................................339
Paper Size Detection.................................................................................................................................339
Paper Height Detection.............................................................................................................................340
By-Pass Tray...................................................................................................................................................342
Overview of By-Pass Tray.........................................................................................................................342
By-Pass Tray Operation............................................................................................................................343
By-Pass Paper Size Detection...................................................................................................................344
Duplex Unit.....................................................................................................................................................345
Overview of Duplex Unit..........................................................................................................................345
Duplex Drive Layout..................................................................................................................................346
Duplex Basic Operation...........................................................................................................................346
Paper Length Longer than A4/LT SEF.............................................................................................346
Paper Length Up to A4/LT SEF.......................................................................................................347
Duplex Unit Feed In and Exit Mechanism...............................................................................................348
Paper Feed into Duplexer................................................................................................................348
Paper Inversion and Exit from Duplexer.........................................................................................349
Image Transfer and Paper Separation.........................................................................................................350
Overview of Transfer and Separation.....................................................................................................350
Transfer Belt Drive Mechanism.................................................................................................................351
Transfer Belt Unit Contact Mechanism.....................................................................................................352
Image Transfer and Paper Separation Mechanism................................................................................353
Transfer Belt Charge.................................................................................................................................355
Transfer Belt Charge Mechanism....................................................................................................355
Correction for Paper Width and Thickness.....................................................................................355
Currents Applied to Leading Edge, Image Areas, and By-Pass Feed..........................................356
Transfer Belt Cleaning Mechanism..........................................................................................................357
19
Summary of Contents for A-P4
Page 1: ...Model A P4 Machine Code G147 SERVICE MANUAL May 12th 2006 Subject to change...
Page 27: ...Installation Flowchart 1 Installation 26 1...
Page 59: ...3 Reattach the application cover x1 1 Installation 58 1...
Page 65: ...2 Preventive Maintenance 64 2...
Page 72: ...Left Covers 1 Left upper cover A x4 2 Controller cover B x2 Covers and Common Procedures 71 3...
Page 82: ...Laser Unit 81 3...
Page 103: ...5 Cover C x2 6 Gear D x1 7 Lower paper feed unit E x2 x1 3 Replacement and Adjustment 102 3...
Page 128: ...Duplex Unit Duplex Cover Removal 1 Duplex unit cover A x4 Duplex Unit 127 3...
Page 181: ...4 Troubleshooting 180 4...
Page 289: ...Self Diagnostic Test Flow 5 Service Tables 288 5...
Page 306: ...Controller Block Diagram Board Layout 305 6...
Page 319: ...What Happens When a New Unit Is Detected 6 Details 318 6...
Page 367: ...6 Details 366 6...
Page 379: ...MEMO 378...
Page 380: ...MEMO 379...
Page 381: ...MEMO 380...