Ricoh C226 Service Manual page 39

ELECTRICAL COMPONENTS LAYOUT
Table
INDEX
NAME
NO.
Printed Circuit Board
1 OPU (Operation Panel Unit)
Contact Image Sensor and
Xenon Lamp
9
Motors
6 ADF Motor
4 Scanner Motor
Sensors and Switches
17 Document Sensor
Scan Line Sensor
19
20 Not used
21 ADF Cover Switch
Scanner Home Position
28
Sensor
25 Platen Cover Sensor
22 ADF Switch
Others
13 Lamp Stabilizer
C226
FUNCTION
Controls the operation panel.
Reads and converts the light reflected from the
document into an analog video signal. It uses an
RMLA (Roof Mirror Lens Array) sensor unit.
The xenon lamp which illuminates the document is
also contained in this unit.
A stepper motor, drives the scanner.
A stepper motor, drives the book scanner.
Detects the presence of a document in the feeder.
Detects when a page is approaching the scan line
position.
Detects when the ADF cover is open.
Detects when the contact image sensor is at home
position.
Detects when the platen cover is open.
Detects when the ADF unit is open.
Supplies power to the xenon lamp.
1-14 SM