vi
Drive................................................................................................... 6-14
Drum Charge...................................................................................... 6-15
Development ...................................................................................... 6-16
Drum Cleaning ................................................................................... 6-18
Service Call Conditions for the Development Section ........................ 6-18
6.2.4 TRANSFER AND PAPER SEPARATION ...................................... 6-19
Overview ............................................................................................ 6-19
Transfer Roller Cleaning .................................................................... 6-20
Service Call Conditions for the Transfer Section................................ 6-20
6.2.5 PAPER FEED ................................................................................ 6-21
Overview ............................................................................................ 6-21
Paper Size Detection ......................................................................... 6-23
Bottom Plate Lift, Upper Limit Detection and Paper End Detection.... 6-24
Paper Near-end Detection.................................................................. 6-25
Paper Feed ........................................................................................ 6-25
By-pass Tray ...................................................................................... 6-26
6.2.6 FUSING ......................................................................................... 6-28
Overview ............................................................................................ 6-28
Fusing ................................................................................................ 6-30
Fusing Unit Drive................................................................................ 6-30
Fusing Pressure Roller, Separation, Exit ........................................... 6-31
Fusing Drive Release......................................................................... 6-31
Fusing Temperature Control .............................................................. 6-32
Cooling Fan Control ........................................................................... 6-33
Fusing Unit Service Call Conditions ................................................... 6-34
6.3 OPTIONAL PAPER FEED UNITS .......................................................... 6-35
6.3.1 OVERVIEW.................................................................................... 6-35
6.3.2 MECHANISMS............................................................................... 6-36
Paper Size Detection ......................................................................... 6-36
Bottom Plate Lift, Upper Limit Detection and Paper End Detection.... 6-37
Paper Near-end Detection.................................................................. 6-38
Paper Feed ........................................................................................ 6-39
Jam Detection .................................................................................... 6-39
6.4 PCBS ...................................................................................................... 6-40
6.4.1 FCU ............................................................................................... 6-40
6.4.2 OPIF (OPTION INTERFACE BOARD) .......................................... 6-45
6.4.3 NCU ............................................................................................... 6-46
6.4.4 PSU ............................................................................................... 6-46
6.4.5 NICF (NETWORK INTERFACE CARD FOR FACSIMILE) ............ 6-47
6.4.6 SG3-D BOARD .............................................................................. 6-49
6.4.7 SIG4 BOARD ................................................................................. 6-50
6.5 SYSTEM FEATURES ............................................................................. 6-51
6.5.1 VERTICAL BLACK LINE CORRECTION....................................... 6-51
Overview ............................................................................................ 6-51
Count Detection Parameters List ....................................................... 6-52
Settings for Vertical Black Line Detection .......................................... 6-53
Vertical Black Line Warning Message ................................................ 6-53
