COMPONENT LAYOUT
November 29, 1999
1-12
No
Name
Description
45
JBIG
(Optional)
This allows the machine to communicate using JBIG
compression.
46
Internet Fax Board
(Optional)
This allows the machine to be connected to a LAN as
an internet fax machine.
47
LCD
This displays messages and the status of the
machine.
48
OPU (Operation Panel
Unit)
This board controls the operation panel.
49
OPIF (Optional
Interface)
This allows the machine to be connected to a G4 unit,
internet fax unit, and some other options.
50
G4 Interface (SiG4
option) or Optional G3
unit
This is an interface for the machine to connect to an
ISDN network or an extra PSTN line. Only one of
these two boards can be installed in the machine.
The standard G3 line is sometimes called PSTN-1,
and the optional G3 line is sometimes called PSTN-2.
2. Motors
No
Name
Description
3
Scanner Motor
This stepper motor drives the scanner.
20
Cooling Fan Motor
Cools the interior of the machine.
24
Polygon Mirror Motor
This high-speed DC motor drives the hexagonal mirror
in the laser printer optics.
27
Main Motor
This stepper motor drives the AIO cartridge and the
fusing unit.
35
Paper Feed Motor
This stepper motor drives the registration roller and
the paper feed mechanisms in the main body.
3. Sensors
No
Name
Description
1
B4-width Sensor
This detects the presence of a B4-width (256 mm,
10.1") document in the feeder.
2
ADF Upper Cover Switch
This detects whether the ADF upper cover is opened
or closed.
7
ADF Unit Switch
This detects whether the ADF unit is opened or
closed.
8
Paper Exit Sensor
Detects when the paper feeds out of the printer.
9
A3-width Sensor
This detects the presence of an A3-width (297 mm,
11.7")document in the feeder.
10
MDF A3-width Sensor
This detects the presence of an A3-width (297 mm,
11.7")document in the MDF.
11
MDF B4-width Sensor
This detects the presence of a B4-width (256 mm,
10.1")document in the MDF.
12
Scan Line Sensor
This detects when a page is approaching the auto
shading position.
13
Document Sensor
This detects the presence of a document in the
feeder.