(5) PWB
No.
Parts
MODEL
Note
Name
Function/operation
1
Power PWB
Outputs DC power. Drives the heater lamp.
The voltage specification differs
depending on the destination.
2
Scanner lamp drive
PWB
Controls light quantity of the scanner lamp.
3
LIU PWB
Performs send/receive control of the TEL line.
4
ICU PWB
Converts print data set from the host and converts it into bit
image data and send to the MCU.
Allows connection with two host
computers. Printer models only
5
MCU (PCU) PWB
Controls the image process section and the engine section.
6
FAX control PWB
Controls the operations relating to FAX. (Sends image data of
the scanner to the LIU PWB. Sends received image data to the
printer engine section. Performs communication control (analysis
of the protocol control and data) for the opponent party.)
7
High voltage power
PWB
Outputs the high voltage for the image process section. Controls
the main motor.
8
Operation control PWB
Displays the value information. Outputs the key operation signal.
(6) Fuse, thermostat
1)
2)
3)
4)
5)
6)
7)
8)
3)
4)
2) F601
1) F603
FO-3800M
5 – 21
