Ricoh G176, Service Manual

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G176/G177/G176L iv SM
5.5.1 UPLOADING NVRAM DATA .....................................................5-85
5.5.2 DOWNLOADING NVRAM DATA ...............................................5-86
5.6 SD CARD APPLICATION MOVE........................................................5-88
5.6.1 OVERVIEW................................................................................5-88
5.6.2 MOVE EXEC..............................................................................5-88
5.6.3 UNDO EXEC..............................................................................5-89
5.7 CONTROLLER SELF TEST AT POWER-ON.....................................5-91
5.8 MENU MODE......................................................................................5-92
5.9 CONTROLLER BOARD DIP SWITCHES ...........................................5-98
DETAILED DESCRIPTIONS
6. DETAILS ..................................................................................6-1
6.1 OVERVIEW...........................................................................................6-1
6.1.1 MECHANICAL COMPONENT LAYOUT ......................................6-1
6.1.2 PAPER PATH ..............................................................................6-2
6.2 BOARD STRUCTURE ..........................................................................6-3
6.2.1 BLOCK DIAGRAM .......................................................................6-3
6.2.2 CONTROLLER BOARD...............................................................6-4
6.3 PRINTING PROCESS ..........................................................................6-6
6.3.1 OVERVIEW..................................................................................6-6
6.3.2 LASER EXPOSURE ....................................................................6-7
Overview .........................................................................................6-7
Automatic Power Control (APC) ......................................................6-8
LD Safety Mechanisms ...................................................................6-9
6.3.3 CARTRIDGE OVERVIEW..........................................................6-10
6.3.4 DRUM CHARGE........................................................................6-10
6.3.5 DEVELOPMENT........................................................................6-11
Toner Supply and Development ....................................................6-11
Toner Density Control ...................................................................6-12
6.3.6 TONER END DETECTION ........................................................6-13
Overview .......................................................................................6-13
Toner End Sensor .........................................................................6-13
Main Motor Rotation Count............................................................6-14
Toner Overflow Prevention............................................................6-14
Summary.......................................................................................6-15