Ricoh B132 Service Manual page 23

DETAILED DESCRIPTIONS
6. DETAILS....................................................................................... 6-1
6.1 GENERAL OVERVIEW .............................................................................6-1
6.1.1 MAIN MACHINE ...............................................................................6-1
6.1.2 PAPER PATH: COVER INTERPOSER TRAY .................................6-3
6.1.3 PAPER PATH: 9-BIN MAILBOX .......................................................6-4
6.1.4 DRIVE LAYOUT ...............................................................................6-5
6.2 BOARDS ...................................................................................................6-6
6.2.1 BLOCK DIAGRAM............................................................................6-6
6.2.2 COMPONENT DESCRIPTIONS ......................................................6-7
6.2.3 CONTROLLER BOX VENTILATION ................................................6-9
6.3 COPY PROCESS OVERVIEW................................................................6-10
6.4 ARDF.......................................................................................................6-13
6.4.1 OVERVIEW ....................................................................................6-13
6.4.2 ARDF ELECTRICAL COMPONENTS ............................................6-14
Components View 1: Sensors.............................................................6-14
Components View 2: Motors, Sensors, Other.....................................6-15
ARDF Components View 3: Drive Motors...........................................6-16
6.4.3 ORIGINAL SIZE DETECTION........................................................6-17
6.4.4 PICK-UP ROLLER..........................................................................6-20
6.4.5 BOTTOM PLATE LIFT....................................................................6-21
6.4.6 ORIGINAL FEED AND SEPARATION ...........................................6-22
6.4.7 ORIGINAL FEED AND SKEW CORRECTION...............................6-23
6.4.8 SLIP DETECTION ..........................................................................6-24
6.4.9 ORIGINAL TRANSPORT (ONE-SIDED) ........................................6-25
6.4.10 DUPLEX SCANNING ...................................................................6-26
6.4.11 ARDF JAM DETECTION ..............................................................6-28
Jam Detection Sensor Layout.............................................................6-28
Jam Detection Table ...........................................................................6-29
6.5 SCANNER UNIT......................................................................................6-30
6.5.1 OVERVIEW ....................................................................................6-30
6.5.2 ORIGINAL SIZE DETECTION........................................................6-31
Detection Timing .................................................................................6-33
6.5.3 SCANNER DRIVE ..........................................................................6-34
6.5.4 SCANNER UNIT FANS AND ANTI-CONDENSATION HEATER ...6-35
6.5.5 DUST DETECTION ........................................................................6-36
Overview.............................................................................................6-36
What Happens if Dust is Detected? ....................................................6-37
How is the Dust Detected? .................................................................6-38
The Effects of SP Mode Settings on Dust Detection...........................6-39
6.6 IMAGE PROCESSING ............................................................................6-40
6.6.1 OVERVIEW ....................................................................................6-40
6.6.2 SBU (SENSOR BOARD UNIT).......................................................6-41
SBU ....................................................................................................6-41
Operation Summary............................................................................6-41
Storing Operation Settings..................................................................6-41
SBU Test Mode ..................................................................................6-41
SM xi B132/B200