Ricoh C231 Service Manual page 25

Registration Roller Drive .....................................................................6-31
Registration Roller Up/Down Mechanism ...........................................6-31
6.7.5 PRINTING PRESSURE MECHANISM ...........................................6-32
6.7.6 RE-FEEDING MECHANISM...........................................................6-32
6.7.7 PAPER TABLE MECHANISM ........................................................6-33
Table lifting/lowering ...........................................................................6-33
Mechanism .........................................................................................6-33
Notes ..................................................................................................6-33
Paper end detection............................................................................6-33
Paper size detection ...........................................................................6-33
Table side fences and side-to-side shift..............................................6-34
Side fence friction pads.......................................................................6-34
6.8 PAPER DELIVERY..................................................................................6-35
6.8.1 OVERVIEW ....................................................................................6-35
6.8.2 PAPER DELIVERY UNIT DRIVE MECHANISM.............................6-35
Mechanism .........................................................................................6-35
Notes ..................................................................................................6-35
6.8.3 PAPER SEPARATION FROM THE DRUM ....................................6-36
Air knife...............................................................................................6-36
Exit pawl air pump...............................................................................6-36
6.8.4 EXIT PAWL DRIVE MECHANISM..................................................6-37
6.9 TIMING CHART.......................................................................................6-38
6.9.1 MASTER EJECT / MASTER FEED ................................................6-38
6.9.2 MASTER WRAPPING ....................................................................6-40
6.9.3 PRINTING ......................................................................................6-42
6.10 JAM DETECTION..................................................................................6-44
6.10.1 MASTER EJECT JAM (E JAM LOCATION INDICATOR) ............6-44
Picking up the used master from the drum .........................................6-44
Compressing the used master ............................................................6-44
Just after turning on the main switch...................................................6-44
6.10.2 DF JAM (P JAM LOCATION INDICATOR)...................................6-45
Feeding in the original.........................................................................6-45
Feeding out the original ......................................................................6-45
Turning on the main switch/closing the DF cover ...............................6-45
6.10.3 MASTER FEED JAM (D JAM LOCATION INDICATOR) ..............6-46
Cutting the master (master not cut).....................................................6-46
Cutting the master (cutter unit problem)..............................................6-46
Clamping the master...........................................................................6-47
6.10.4 DRUM JAM (B JAM LOCATION INDICATOR) .............................6-47
Wrapping jam......................................................................................6-47
Changed "B jam" indicator ..................................................................6-47
6.10.5 PAPER FEED JAM (A JAM LOCATION INDICATOR) .................6-49
Paper feed ..........................................................................................6-49
Turning on the main switch/end of paper feed ....................................6-49
6.10.6 PAPER DELIVERY JAM (C JAM LOCATION INDICATOR).........6-49
Paper delivery .....................................................................................6-49
SPECIFICATIONS............................................................................. 7-1
1. GENERAL SPECIFICATIONS.....................................................................7-1
SM C231/C237/C238/C248/C267
xiii
Rev. 01/2006