Ricoh G065 - Page 17

SM v G065
Self-Diagnostic Test Flow .................................................................. 5-41
5.5.2 DETAILED SELF-DIAGNOSTIC MODE ........................................ 5-42
5.6 DIP SWITCHES...................................................................................... 5-43
Controller: DIP SW2........................................................................... 5-43
I/O Board: DIP SW101 ....................................................................... 5-43
DETAILED DESCRIPTIONS
6. DETAILED SECTION DESCRIPTIONS....................................... 6-1
6.1 OVERVIEW .............................................................................................. 6-1
6.1.1 COMPONENT LAYOUT .................................................................. 6-1
Paper Path ........................................................................................... 6-2
DRIVE LAYOUT................................................................................... 6-3
6.2 BOARD STRUCTURE.............................................................................. 6-4
6.2.1 BLOCK DIAGRAM ........................................................................... 6-4
6.2.2 CONTROLLER ................................................................................ 6-6
6.3 PRINTING PROCESS OVERVIEW.......................................................... 6-8
Drum Charge........................................................................................ 6-8
Laser Exposure .................................................................................... 6-8
Development........................................................................................ 6-8
Image Transfer..................................................................................... 6-9
Separation............................................................................................ 6-9
ID Sensor ............................................................................................. 6-9
Cleaning............................................................................................... 6-9
Quenching............................................................................................ 6-9
6.4 LASER EXPOSURE ............................................................................... 6-10
6.4.1 OVERVIEW ................................................................................... 6-10
6.4.2 AUTO POWER CONTROL (APC) ................................................. 6-11
6.4.3 DUAL BEAM WRITING.................................................................. 6-12
6.4.4 LASER BEAM PITCH CHANGE MECHANISM ............................. 6-13
6.4.5 LD SAFETY SWITCHES ............................................................... 6-14
6.5 PHOTOCONDUCTOR UNIT (PCU)........................................................ 6-15
6.5.1 OVERVIEW ................................................................................... 6-15
6.5.2 DRIVE MECHANISM ..................................................................... 6-16
6.5.3 DRUM PAWLS............................................................................... 6-16
6.5.4 DRUM TONER SEALS .................................................................. 6-16
6.6 DRUM CHARGE..................................................................................... 6-17
6.6.1 OVERVIEW ................................................................................... 6-17
6.6.2 CHARGE ROLLER VOLTAGE CORRECTION ............................. 6-18
Correction for Environmental Conditions............................................ 6-18
Correction for Paper Width and Thickness (By-pass Tray only)......... 6-19
6.6.3 ID SENSOR PATTERN PRODUCTION TIMING ........................... 6-20
6.6.4 DRUM CHARGE ROLLER CLEANING ......................................... 6-21
6.7 DEVELOPMENT..................................................................................... 6-22
6.7.1 OVERVIEW ................................................................................... 6-22
DRIVE MECHANISM ......................................................................... 6-23
6.7.3 DEVELOPER MIXING ................................................................... 6-23
6.7.4 DEVELOPMENT BIAS................................................................... 6-24
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA