Ricoh DD 4450 - Machine Boards and Functions; Machine Motors and Functions

Overview
SM 1-5 C279
Product
Information
Boards
No. Component Function
6 CCD and SBU Outputs a video signal to the MPU.
18
Paper Width Detection Board Sends data about the paper width on the paper
table to the MPU.
30 Ink Detection Board Checks if there is ink in the drum.
36 Operation Panel Boards These boards control the operation panel.
37 Power Supply Unit (PSU) Provides dc power to the machine.
54 Main Motor Board Controls the main motor speed.
62
Main Processing Unit (MPU) Controls all machine functions, both directly and
through other boards.
70 Lamp Stabilizer This supplies power to the exposure lamp.
Motors
No. Component Function
5 Scanner Motor Drives the scanner.
23 Master Feed Motor Feeds the master to the drum.
24 Table Motor Raises and lowers the paper table.