Pcbs; Motors - Ricoh FAX3700l Service Manual

August 2nd, 1995

1. PCBs

No. Name
FDU (Facsimile Driver
3 Unit)
FCE (Facsimile Control
6
Engine)
NCU (Network Control
2
Unit)
OPU (Operation Panel
7
Unit)
PSU (Power Supply Unit)
1
LDDR (Laser Diode
8
Driver)
Power Pack
10
Contact Image Sensor
Assembly
4

2. Motors

No. Name
Tx Motor
14
Main Motor
13
Paper Feed Motor
12
Hexagonal Mirror Motor
5
Ozone Fan Motor
9
Cooling Fan Motor
11
OVERALL MACHINE INFORMATION
Description
This board contains drivers for the motors, a dc-dc
converter, the energy saving mode cpu, and other drive
electronics.
This board controls the machine. It contains the main
cpu, flash ROM, system RAM, and so on.
This board contains a relay and switches for interfacing
the machine to the network and the handset.
This board controls the operation panel.
This board supplies power to the machine, and
switches the fusing lamp on/off.
This board drives the laser diode.
This supplies high voltages to the corona wire, transfer
roller, and development rollers.
This sensor reads and converts the light reflected from
the document into an analog video signal. It uses an
RLA (Rod Lens Array) sensor unit.
An LED array which illuminates the document is
contained in this unit.
Description
This stepper motor drives the scanner.
This brushless dc motor drives the drum, fusing unit,
development unit, and CTM.
This stepper motor drives the registration roller and the
paper feed mechanisms in the cassettes.
This high-speed dc motor drives the hexagonal mirror
in the laser printer optics.
This removes ozone-laden air from the vicinity of the
drum, and filters out the ozone.
This cools the interior of the machine.
1-11
COMPONENT LAYOUT