Ricoh C249, Service Manual

Page: 222 / 486

C264 vi SM
6.5.4 MASTER BUFFER MECHANISM...................................................6-19
6.5.5 DETECTION OF A MASTER IN THE LOWER MASTER TRAY ....6-20
6.5.6 DUCT PLATE MECHANISM ..........................................................6-21
Mechanism .........................................................................................6-21
Procedure ...........................................................................................6-22
6.5.7 MASTER FEED MECHANISM .......................................................6-23
Mechanism .........................................................................................6-23
Procedure ...........................................................................................6-23
6.5.8 CLAMPER AND TENSION ROLLER MECHANISM.......................6-24
Mechanism .........................................................................................6-24
Procedure ...........................................................................................6-24
6.5.9 MASTER PUSH MYLAR ................................................................6-25
Mechanism .........................................................................................6-25
6.5.10 DETECTION OF MASTERS ON THE DRUM ..............................6-26
6.5.11 2ND DRUM MASTER SENSOR...................................................6-27
Mechanism .........................................................................................6-27
6.5.12 CUTTER MECHANISM ................................................................6-28
6.5.13 RE-CUTTING MECHANISM.........................................................6-28
6.5.14 MASTER SET COVER .................................................................6-29
6.6 DRUM......................................................................................................6-30
6.6.1 OVERVIEW ....................................................................................6-30
Procedure ...........................................................................................6-30
6.6.2 DRUM DRIVE MECHANISM ..........................................................6-31
Mechanism .........................................................................................6-31
6.6.3 INK SUPPLY MECHANISM............................................................6-32
Gears [C] Mechanism .........................................................................6-32
6.6.4 INK ROLLER MECHANISM ...........................................................6-33
Mechanism .........................................................................................6-33
6.6.5 DRUM IDLING MECHANISM .........................................................6-34
Mechanism .........................................................................................6-34
6.6.6 DETECTION OF MASTERS ON THE DRUM ................................6-35
Drum master sensor ...........................................................................6-35
6.6.7 INK SUPPLY CONTROL ................................................................6-36
Mechanism .........................................................................................6-36
6.6.8 DRUM HOME POSITION DETECTION .........................................6-37
6.7 PAPER FEED..........................................................................................6-38
6.7.1 OVERVIEW ....................................................................................6-38
Mechanism .........................................................................................6-38
6.7.2 PAPER FEED MECHANISM ..........................................................6-39
Mechanism .........................................................................................6-39
6.7.3 PAPER FEED / SEPARATION PRESSURE MECHANISM ...........6-40
6.7.4 REGISTRATION ROLLER MECHANISM.......................................6-41
Registration Roller Drive .....................................................................6-41
Registration Roller Up/Down Mechanism ...........................................6-42
6.7.5 AUTO ADJUSTABLE PRINTING PRESSURE MECHANISM ........6-43
6.7.6 RE-FEEDING MECHANISM...........................................................6-43
6.7.7 PAPER TABLE MECHANISM ........................................................6-44
Table lifting/lowering ...........................................................................6-44
Paper end detection............................................................................6-44