10/00
4-1
Phaser 790/DocuColor 2006
Repairs and Adjustments
Initial Issue
4 Repairs and Adjustments
Electrical
REP 1.1 LVPS.................................................................................................................
4-5
REP 1.2 HVPS ................................................................................................................
4-5
REP 1.3 Top Cover Interlock ..........................................................................................
4-6
REP 1.4 Developer Fan ..................................................................................................
4-6
REP 1.5 MCU PWB ........................................................................................................
4-7
REP 1.6 Right Front Cover Interlock ...............................................................................
4-8
REP 1.7 Left Front Cover Interlock .................................................................................
4-8
REP 1.8 Environment Sensor .........................................................................................
4-9
REP 1.9 ESS PWB .........................................................................................................
4-10
REP 1.10 ESS Fan .........................................................................................................
4-11
REP 1.11 Controller Chassis ..........................................................................................
4-11
REP 1.12 Communication PWB......................................................................................
4-12
REP 1.13 Hard Disk Drive Assembly ..............................................................................
4-13
Drives
REP 4.1 Paper Handling Drive Unit ................................................................................
4-15
REP 4.2 Fuser Drive Unit ................................................................................................
4-16
REP 4.3 Fuser Motor ......................................................................................................
4-17
REP 4.4 Paper Handling Motor.......................................................................................
4-17
REP 4.5 Drive Motor PWB ..............................................................................................
4-18
REP 4.6 Process Drive Unit ............................................................................................
4-19
REP 4.7 Rotary Motor .....................................................................................................
4-20
REP 4.8 Rotary Motor PWB............................................................................................
4-20
REP 4.9 Dispense Clutch................................................................................................
4-21
REP 4.10 Developer Clutch ............................................................................................
4-21
ADF
REP 5.1 ADF Assembly ..................................................................................................
4-23
REP 5.2 ADF Drive Motor ...............................................................................................
4-24
REP 5.3 Counterbalance ................................................................................................
4-24
REP 5.4 Feed Roll ..........................................................................................................
4-25
REP 5.5 Nudger Roll.......................................................................................................
4-26
REP 5.6 Registration Roll ...............................................................................................
4-29
REP 5.7 Document Transport Assembly ........................................................................
4-31
REP 5.8 Platen Belt ........................................................................................................
4-32
REP 5.9 ADF Exit Motor .................................................................................................
4-33
REP 5.10 ADF Exit Sensor and Exit Tray Interlock ........................................................
4-34
Imaging
REP 6.1 Platen Glass .....................................................................................................
4-37
REP 6.2 Right Cover.......................................................................................................
4-37
REP 6.3 Left Cover .........................................................................................................
4-38
REP 6.4 Rear Cover .......................................................................................................
4-38
REP 6.5 Angle Sensor ....................................................................................................
4-39
REP 6.6 Platen Switch ....................................................................................................
4-39
REP 6.7 Registration Sensor ..........................................................................................
4-40
REP 6.8 IIT Low Voltage Power Supply (LVPS) .............................................................
4-41
REP 6.9 Fan....................................................................................................................
4-41
REP 6.10 APS Sensor ....................................................................................................
4-42
REP 6.11 PWB Box.........................................................................................................
4-43
REP 6.12 PWB Box Cover ..............................................................................................
4-45
REP 6.13 IPS PWB .........................................................................................................
4-45
REP 6.14 ICM Main PWB ...............................................................................................
4-46
REP 6.15 Extension PWB ...............................................................................................
4-47
REP 6.16 Advanced Features Memory PWB..................................................................
4-47
REP 6.17 Front / Rear Cable Assembly..........................................................................
4-48
REP 6.18 Carriage Motor ................................................................................................
4-49
REP 6.19 Belt..................................................................................................................
4-50
REP 6.20 Lamp ...............................................................................................................
4-50
REP 6.21 Full-rate Carriage Assembly ...........................................................................
4-51
REP 6.22 FLPS PWB......................................................................................................
4-51
REP 6.23 Control Panel Assembly..................................................................................
4-52
Paper Supply
REP 7.1 Size Switch PWB ..............................................................................................
4-53
REP 7.2 Sensor Bracket .................................................................................................
4-53
REP 7.3 No Paper Sensor Assembly..............................................................................
4-54
REP 7.4 No Paper Sensor ..............................................................................................
4-54
REP 7.5 Low Paper Sensor ............................................................................................
4-55
REP 7.6 Tray 1 Assembly / Paper Tray Assembly / Oversize Tray Assembly................
4-55
REP 7.7 Tray 1 Front Snubber........................................................................................
4-56
REP 7.8 Oversize Tray Front Snubber............................................................................
4-56
Paper Feed
REP 8.1 Turn Roll ...........................................................................................................
4-59
REP 8.2 Feed Roll...........................................................................................................
4-60
REP 8.3 Feed Roll Assembly ..........................................................................................
4-61
REP 8.4 Turn Clutch .......................................................................................................
4-62
REP 8.5 Feed Solenoid...................................................................................................
4-63
REP 8.6 Bypass Tray/Registration Assembly .................................................................
4-64
REP 8.7 Bypass Tray Feed Assembly ............................................................................
4-64
REP 8.8 Tray Housing.....................................................................................................
4-65
REP 8.9 Main Paper Handling Frame Assembly ............................................................
4-65
REP 8.10 Lift Plate Sensor..............................................................................................
4-66
REP 8.11 Lift Frame Assembly .......................................................................................
4-66
REP 8.12 Tray Empty Sensor .........................................................................................
4-67
REP 8.13 Pitch Sensor....................................................................................................
4-67
REP 8.14 Stack Height Sensor .......................................................................................
4-68
REP 8.15 Preregistration Clutch .....................................................................................
4-69
REP 8.16 Preregistration Roll .........................................................................................
4-69
REP 8.17 Registration Clutch..........................................................................................
4-70
REP 8.18 Registration Rubber Roll.................................................................................
4-70
REP 8.19 Size Switch PWB ............................................................................................
4-71
REP 8.20 Feeder Motor ..................................................................................................
4-72
REP 8.21 Feeder PWB ...................................................................................................
4-72
Summary of Contents for Phaser 790
Page 4: ...10 00 ii Phaser 790 DocuColor 2006 Initial Issue Introduction...
Page 10: ...10 00 1 2 Phaser 790 DocuColor 2006 Initial Issue Service Call Procedures...
Page 46: ...10 00 2 32 Phaser 790 DocuColor 2006 002 702 Initial Issue Status Indicator RAPs...
Page 80: ...10 00 2 66 Phaser 790 DocuColor 2006 005 704 Initial Issue Status Indicator RAPs...
Page 130: ...10 00 2 116 Phaser 790 DocuColor 2006 007 713 Initial Issue Status Indicator RAPs...
Page 150: ...10 00 2 136 Phaser 790 DocuColor 2006 008 707 Initial Issue Status Indicator RAPs...
Page 180: ...10 00 2 166 Phaser 790 DocuColor 2006 009 704 Initial Issue Status Indicator RAPs...
Page 193: ...10 00 2 179 Phaser 790 DocuColor 2006 010 700 Status Indicator RAPs Initial Issue...
Page 204: ...10 00 2 190 Phaser 790 DocuColor 2006 010 705 Initial Issue Status Indicator RAPs...
Page 220: ...10 00 2 206 Phaser 790 DocuColor 2006 011 706 Initial Issue Status Indicator RAPs...
Page 226: ...10 00 2 212 Phaser 790 DocuColor 2006 016 370 Initial Issue Status Indicator RAPs...
Page 234: ...10 00 3 2 Phaser 790 DocuColor 2006 Initial Issue Image Quality...
Page 245: ...10 00 3 13 Phaser 790 DocuColor 2006 IQ8 Image Quality Initial Issue...
Page 254: ...10 00 3 22 Phaser 790 DocuColor 2006 IQ18 Initial Issue Image Quality...
Page 258: ...10 00 4 4 Phaser 790 DocuColor 2006 Initial Issue Repairs and Adjustments...
Page 268: ...10 00 4 14 Phaser 790 DocuColor 2006 REP 1 13 Initial Issue Repairs and Adjustments...
Page 276: ...10 00 4 22 Phaser 790 DocuColor 2006 REP 4 9 REP 4 10 Initial Issue Repairs and Adjustments...
Page 290: ...10 00 4 36 Phaser 790 DocuColor 2006 REP 5 10 Initial Issue Repairs and Adjustments...
Page 312: ...10 00 4 58 Phaser 790 DocuColor 2006 REP 7 8 Initial Issue Repairs and Adjustments...
Page 366: ...10 00 4 112 Phaser 790 DocuColor 2006 REP 9 22 REP 9 23 Initial Issue Repairs and Adjustments...
Page 382: ...10 00 4 128 Phaser 790 DocuColor 2006 REP 10 19 Initial Issue Repairs and Adjustments...
Page 420: ...10 00 4 166 Phaser 790 DocuColor 2006 ADJ 11 1 Initial Issue Repairs and Adjustments...
Page 512: ...03 01 6 2 Phaser 790 DocuColor 2006 General Procedures and Information...
Page 534: ...03 01 6 24 Phaser 790 DocuColor 2006 GP 23 General Procedures and Information...
Page 546: ...03 01 6 36 Phaser 790 DocuColor 2006 General Procedures and Information...
Page 548: ...10 00 7 2 Phaser 790 DocuColor 2006 Initial Issue Wiring Data...
Page 586: ...10 00 7 40 Phaser 790 DocuColor 2006 Initial Issue Wiring Data BSD 1 1 Figure 1 Main Power On...
Page 592: ...10 00 7 46 Phaser 790 DocuColor 2006 Initial Issue Wiring Data BSD 2 1 Figure 1 Control Panel...
Page 607: ...10 00 7 61 Phaser 790 DocuColor 2006 Wiring Data Initial Issue BSD 5 4 Figure 1 Document Exit...
Page 612: ...10 00 7 66 Phaser 790 DocuColor 2006 Initial Issue Wiring Data BSD 6 5 Figure 1 Image Input...
Page 627: ...10 00 7 81 Phaser 790 DocuColor 2006 Wiring Data Initial Issue BSD 8 6 Figure 1 Registration...
Page 641: ...10 00 7 95 Phaser 790 DocuColor 2006 Wiring Data Initial Issue BSD 10 1 Figure 1 Fusing...