Ricoh Gestetner LANIER SAVIN G071 Service Manual page 16

5.5.2 UPGRADING ..................................................................................5-57
Procedure ...........................................................................................5-57
Error Recovery....................................................................................5-58
5.6 DIP SWITCHES.......................................................................................5-59
Controller Board..................................................................................5-59
BCU Board..........................................................................................5-59
5.7 PRINTING A TEST PATTERN ................................................................5-60
DETAILED SECTION DESCRIPTIONS
6. DETAILED SECTION DESCRIPTIONS ....................................... 6-1
6.1 OVERVIEW ...............................................................................................6-1
6.1.1 MAJOR COMPONENTS ..................................................................6-1
6.1.2 PAPER PATH ...................................................................................6-2
6.1.3 DRIVE COMPONENTS ....................................................................6-3
6.1.4 ELECTRICAL COMPONENTS .........................................................6-4
Image Transfer .....................................................................................6-4
Development Units................................................................................6-5
Paper Path............................................................................................6-6
Drive Components ................................................................................6-7
Circuit Boards .......................................................................................6-8
6.2 PRINTING PROCESS OVERVIEW...........................................................6-9
6.3 PROCESS CONTROL ............................................................................6-11
6.3.1 OVERVIEW ....................................................................................6-11
6.3.2 PROCESS CONTROL STEPS .......................................................6-12
Six Steps.............................................................................................6-12
When is Process Control Done? .........................................................6-12
6.4 PHOTOCONDUCTOR UNIT (PCU) ........................................................6-13
6.4.1 OVERVIEW ....................................................................................6-13
6.4.2 NEW PHOTOCONDUCTOR UNIT DETECTION ...........................6-14
New PCU Sensor................................................................................6-14
Mechanism .........................................................................................6-14
PCU Counter ......................................................................................6-14
6.4.3 CHARGE CORONA UNIT ..............................................................6-15
Power Supply......................................................................................6-15
Wire Cleaning .....................................................................................6-15
Cleaning Interval .................................................................................6-15
Quenching ..........................................................................................6-16
6.4.4 OPC BELT DRIVE ..........................................................................6-16
6.4.5 OPC BELT CLEANING UNIT .........................................................6-17
Toner Collection Augers .....................................................................6-17
Counter Blade + Brush .......................................................................6-17
Waste Toner Bottle Sensors ...............................................................6-17
Drive ...................................................................................................6-18
6.4.6 IMAGE TRANSFER BELT UNIT ....................................................6-19
Drive ...................................................................................................6-19
Belt Mark Sensor ................................................................................6-19
Bias Roller ..........................................................................................6-20
G071
CÓPIA NÃO CONTROLADA
iv
CÓPIA NÃO CONTROLADA
Rev. 04/2003
SM