Ricoh FAX2000L Service Manual page 16

COMPONENT LAYOUT
1. PCBs
No Name
2 CIS (Contact Image
Sensor)
5 LDDR (Laser Diode
Driver)
23 NCU (Network Control
Unit)
24 OPU (Operation Panel
Unit)
25 FCU (Facsimile Control
Unit)
26 Power Pack
27 PSU
(Power Supply Unit)
2. Motors
No Name
4 Polygon Mirror Motor
7 Main Motor
11 Paper Feed Motor
15 Scanner Motor
21 Cooling Fan Motor
3. Sensors
No Name
1 Document Sensor
3 Paper End Sensor
6 Paper Edge Sensor
8 Rear Upper Cover Switch Detects whether the rear upper cover is open or
9 Rear Lower Cover Switch Detects whether the rear lower cover is open or
16 Registration Sensor
19 Fusing Exit Sensor
22 Toner End Sensor
This sensor reads and converts the light reflected from
the document into an analog video signal.
This board drives the laser diode.
This board contains relays and switches for interfacing
the machine with the network and the handset.
This board controls the operation panel.
This board controls the machine. It contains the main
CPU, flash ROM, system RAM, etc.
Supplies high voltage to the charge brush roller,
transfer roller and development rollers.
This board supplies power to the machine, and
switches the fusing lamp on/off.
This high-speed dc motor drives the hexagonal mirror
in the laser printer optics.
This stepper motor drives the All-in-One cartridge and
the fusing unit.
This stepper motor drives the registration roller and
the paper feed mechanisms in the cassettes.
This stepper motor drives the scanner.
Cools the interior of the machine.
Detects the presence of a document in the feeder.
Detects when the paper in the cassette has run out.
Detects when the paper has passed the paper feed
components.
closed.
closed.
Detects when paper reaches the registration roller.
Detects when the paper feeds out of the printer.
Detects when the toner has run out.
1-10
30 November, 1999
Description
Description
Description