Ricoh PE-P1 Service Manual page 167

6. Detailed Section Descriptions
This is for more printer processing memory, and is also used for collation and for soft fonts.
• OPU (Operation Panel Unit):
This controls the display panel, the LED, and the keypad.
MF Model
6
• EGB (Engine Board):
This controls the Engine, the controller interface, image processing, MUSIC (Mirror Unit for Skew and
Interval Correction), input/output, interfaces with the optional units, and the operation panel. MUSIC
is also called Automatic Line Position Adjustment).
• Controller:
This controls the interface between the OPU and EGB, ADF, Scanner unit and applications. The
controller connects to the EGB through the PCI Bus (Peripheral Component Interconnect Bus).
• LD Drive Board:
This is the laser diode drive circuit board.
• Memory DIMM (Standard: 128MB (MF1a/b), 256MB (MF1c), Option: 256MB):
This is for more printer processing memory, and is also used for collation and for soft fonts.
• OPU (Operation Panel Unit):
This controls the display panel, the LED, and the keypad.
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