Ricoh Aficio 1013 Service Manual page 17

Speaker Driver ....................................................................................6-10
Heater Control ....................................................................................6-10
Video Processing Circuit.....................................................................6-10
Power Pack Control ............................................................................6-10
Scanner Driver ....................................................................................6-10
Plotter Driver.......................................................................................6-10
6.5.2 SBU (SENSOR BOARD UNIT).......................................................6-11
Buffer ..................................................................................................6-11
CCD ....................................................................................................6-11
Amplifier..............................................................................................6-11
6.5.3 NCU (NETWORK CONTROL UNIT) ..............................................6-12
North America version ........................................................................6-12
Europe/Asia version............................................................................6-12
6.6 COPY PROCESS OVERVIEW ...............................................................6-13
6.7 SCANNING..............................................................................................6-15
6.7.1 OVERVIEW ....................................................................................6-15
6.7.2 SCANNER DRIVE ..........................................................................6-16
6.8 IMAGE PROCESSING ............................................................................6-17
6.8.1 OVERVIEW ....................................................................................6-17
6.8.2 IMAGE PROCESSING PATH.........................................................6-18
6.8.3 ORIGINAL MODES ........................................................................6-19
Original Modes: Copying....................................................................6-20
6.8.4 IMAGE PROCESSING STEPS FOR EACH MODE .......................6-21
6.8.5 MODE ADJUSTMENTS .................................................................6-22
To customize... ...................................................................................6-22
Default plotter customization settings for each mode... ......................6-23
6.9 LASER EXPOSURE................................................................................6-24
6.9.1 OVERVIEW ....................................................................................6-24
6.9.2 LD SAFETY SWITCHES ................................................................6-25
6.10 PHOTOCONDUCTOR UNIT (PCU) ......................................................6-26
6.10.1 OVERVIEW ..................................................................................6-26
6.10.2 DRUM DRIVE ...............................................................................6-27
6.11 DRUM CHARGE ...................................................................................6-28
6.11.1 OVERVIEW ..................................................................................6-28
6.11.2 CHARGE ROLLER VOLTAGE CORRECTION ............................6-29
Correction for Ambient Environment ...................................................6-29
6.11.3 CHARGE ROLLER CLEANING....................................................6-30
6.11.4 DETECTION OF A NEW PCU......................................................6-31
At time of copier installation ................................................................6-31
When a replacement PCU is installed.................................................6-31
6.12 DEVELOPMENT ...................................................................................6-32
6.12.1 OVERVIEW ..................................................................................6-32
6.12.2 DEVELOPMENT BIAS .................................................................6-33
6.12.3 TONER SUPPLY ..........................................................................6-34
Toner-Bottle Models (B044 and B046)................................................6-34
Toner Hopper Magazine (B045) .........................................................6-35
6.12.4 TONER DENSITY CONTROL ......................................................6-36
Overview.............................................................................................6-36
Reference Voltage ..............................................................................6-36
SM v B044/B045/B046