Service manual

G130/G131 viii SM
6.6.3 PAPER LIFT – TRAYS 1 & 2..........................................................6-48
6.6.4 PAPER SIZE DETECTION – TRAYS 1 & 2....................................6-49
6.6.5 PAPER HEIGHT DETECTION – TRAYS 1 & 2 ..............................6-50
6.6.6 PAPER END DETECTION – TRAYS 1 & 2 ....................................6-50
6.6.7 REGISTRATION.............................................................................6-51
6.6.8 PAPER FEED LINE SPEED...........................................................6-52
6.6.9 GRIP ROLLER RELEASE MECHANISM .......................................6-53
6.7 IMAGE TRANSFER AND PAPER SEPARATION ...................................6-54
6.7.1 OVERVIEW ....................................................................................6-54
6.7.2 TRANSFER BELT DRIVE ..............................................................6-55
Drive Motor .........................................................................................6-55
Transfer belt speed control .................................................................6-56
Transfer belt mark sensor ...................................................................6-57
6.7.3 TRANSFER CURRENT..................................................................6-58
6.7.4 TRANSFER BELT CLEANING .......................................................6-59
6.7.5 TRANSFER BELT CONTACT ........................................................6-60
Mechanism .........................................................................................6-60
Transfer Belt Sensor...........................................................................6-61
6.7.6 ACS (AUTO COLOR SENSING) MODE ........................................6-62
6.8 FUSING...................................................................................................6-63
6.8.1 OVERVIEW ....................................................................................6-63
6.8.2 FUSING UNIT DRIVE.....................................................................6-64
Belt and Rollers ..................................................................................6-64
Fusing Clutch......................................................................................6-64
6.8.3 FUSING TEMPERATURE CONTROL............................................6-65
Fusing Temperatures..........................................................................6-65
Temperature Corrections ....................................................................6-66
Overheat Protection............................................................................6-66
6.8.4 NEW FUSING UNIT DETECTION..................................................6-67
6.8.5 ENERGY SAVER MODES .............................................................6-68
Level 1 Energy Saver Mode................................................................6-68
Level 2 Energy Saver Mode................................................................6-68
6.9 PAPER EXIT ...........................................................................................6-69
6.9.1 OVERVIEW ....................................................................................6-69
6.9.2 PAPER OVERFLOW DETECTION ................................................6-70
6.10 DUPLEX UNIT.......................................................................................6-71
6.10.1 OVERVIEW ..................................................................................6-71
6.10.2 DUPLEX OPERATION .................................................................6-72
Up to A4/LT (81/2" x 11") LEF ............................................................6-72
Larger than A4/LT (81/2" x 11") LEF...................................................6-72
6.10.3 DUPLEX INVERTER UNIT...........................................................6-73
6.10.4 FEED TO EXTERNAL EXIT TRAY (NON-DUPLEX MODE) ........6-74
6.10.5 FEED TO DUPLEX FEED UNIT...................................................6-75
6.10.6 FEED TO TWO-TRAY FINISHER AND BOOKLET FINISHER ....6-76
With Optional One-Tray Paper Feed Unit ...........................................6-76
With Optional LCT or Two-Tray Paper Feed Unit ...............................6-76
6.10.7 DUPLEX FEED UNIT ...................................................................6-77
Drive ...................................................................................................6-77
Feed-in and feed-out...........................................................................6-77