Samsung SCX-4200 Series - 7 Block Diagram; System Block Diagram

Block Diagram
Samsung Electronics
Service Manual
7-1
7
7
7. Block Diagram
7.1 System Block Diagram
Chrous2
UART
CY25811
Main CLK 10.00MHz
USB2.0
FLASHROM
29LV800
SDRAM
8MB
Motor Drv .
A3977
Motor Drv .
A3977
Main
Motor
Scan
Motor
LSU CIS
RESET IC
C R
SMPS HVPS
D R
S R
T R
REG REG
Exit
Sensor
Feed
Sensor
Cover
Open S/W
24V/5V
TRIAC
Thermistor
Fuser
Thermostat
LSU
OPE
HC
48C50
LCD KEY
PC
Pickup
Solenoid
FAN 2
Scanner
A(1:20) D(0:15)
5V
3.3V 1.8V
Main Board
P/Empty
Sensor
Engine Frame
Developer Unit
CY25814
Video CLK
16.59MHz
3.3V
MP
Sensor
FAN 1
CDRH S/W
MP
Solenoid
LED