Ricoh Gestetner LANIER SAVIN G071 Service Manual page 17

6.4.7 TRANSFER BELT CLEANING UNIT..............................................6-21
Bias Brush ..........................................................................................6-21
Bias Roller and Cleaning Blade ..........................................................6-21
Collecting Coil .....................................................................................6-21
Waste Toner Bottle Sensors ...............................................................6-21
Contact Mechanism ............................................................................6-22
Power Supply......................................................................................6-23
Drive ...................................................................................................6-23
6.5 LASER EXPOSURE................................................................................6-24
6.5.1 OVERVIEW ....................................................................................6-24
Dust Shield Glass Cleaning ................................................................6-25
LD Unit Adjustment .............................................................................6-25
Polygonal Mirror..................................................................................6-25
Laser Diode Power Control.................................................................6-25
Maintenance Adjustment ....................................................................6-25
6.5.2 LD SAFETY SWITCH .....................................................................6-26
Operation Panel Message and Switch Mechanism.............................6-27
6.6 DEVELOPMENT .....................................................................................6-28
6.6.1 OVERVIEW ....................................................................................6-28
6.6.2 DEVELOPMENT UNIT ...................................................................6-29
Rollers and Agitators...........................................................................6-29
Replacing Units...................................................................................6-29
Memory Chip ......................................................................................6-29
6.6.3 TONER SUPPLY MECHANISM .....................................................6-30
Toner Cartridge Agitators....................................................................6-30
Drive Power Path ................................................................................6-30
Development Unit Agitator ..................................................................6-30
Toner Supply Roller and Doctor Roller ...............................................6-30
Shutter ................................................................................................6-30
6.6.4 TONER END DETECTION.............................................................6-31
Mechanism .........................................................................................6-31
Toner Near-End Detection ..................................................................6-31
Toner End Detection ...........................................................................6-32
Toner End Recovery ...........................................................................6-32
6.6.5 DEVELOPMENT UNIT CONTACT MECHANISM ..........................6-33
Mechanism .........................................................................................6-33
Reverse Rotation ................................................................................6-33
6.6.6 POWER SOURCE..........................................................................6-34
Development, Toner Supply, and Doctor Rollers ................................6-34
Doctor Roller.......................................................................................6-34
6.7 PAPER FEED..........................................................................................6-35
6.7.1 OVERVIEW ....................................................................................6-35
Transport Speed .................................................................................6-36
Friction Pad.........................................................................................6-36
6.7.2 STANDARD TRAY DRIVE .............................................................6-36
Feed and Vertical Transport Rollers ...................................................6-36
Registration Roller ..............................................................................6-36
6.7.3 STANDARD TRAY - BOTTOM PLATE LIFT .................................6-37
Lift Mechanism....................................................................................6-37
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