AM-900U
4 – 1
FAX
AM-900U
Service Manual
Service Manual
Market
E
CHAPTER 4.
DIADRAMS
[1] Block diagram
Image
S
ensor
Unit
Color
CIS
:
600dpi,
208mm
Drive
Mechanism
Stepper
Motor/
ORG
Sensor/Front
Sensor
AFE
&G
P
IO
GPIO
Main
Controller
OA-2000
(OASIS)
USB
2.0
USB
port
:
3
2bit
ARC
C
PU-core
Client
:
Internal
96MHz
PIXEL
GPIO
OUT
USART
Clocked
Synchronous
Serial
C
ommunication
Printer
Controller
16bit
CPU/20MHz
GPIO
Timer-Out
GPIO
GPI
T
imer-Out
ADC
GPO
G
PI
[ENGINE]
:
1
2
ppm,
600
x
600dpi
Tray
Cover
Sensor
HIGH
VOLTAGE
PWB
UNIT
Thermistor
Heater
PO1
S
ensor
PO2
S
ensor
Bypass
PE
Sensor
Fusing
Unit
P-IN
Sensor
Interlock
Optical
Unit
(LSU)
Switch
Toner
C/T
Sensor
Main
Motor
Stepper
Motor
Pickup
Motor
Stepper
Motor
Roller Switch
Paper
Pick-up
Mechanism
Host
PC
CONTROL
PWB
UNIT
Program
Memory
Work
Memory
NOR
Flash
SDRAM
:
2MB
:
16MB
16
Memory-Bus
8
Peripheral-Bus
I/F
Logic
Circuit
V
.34
F
ax
Modem
FM336Plus
LIU
PWB
UNIT
OPERATION
PANEL
PWB
UNIT
Entering
Key
Tact
SW
(31)
LED
Red
x
1
LCD
Module
:
1
6
x
1line
[Flatbed
&
ADF
Scanner
U
nit]