Samsung ML-651x series Service Manual page 43

2.2.6.3 Engine controller
The Engine Controller is composed of an engine control SOCs (LPEC3 and LPEC1), and other logic Ics for
mechanical elements. The engine controller controls the motor, Fan signal and adjusts temperature in the
fusing system and read sensor signal.
The Engine Controller also includes communication control units for optional SCF, HCF and Finishers.
BLDC
Motors
ATMEGA 88
Step DC
Motors
CRUM & MSOK
Clutch &
Solenoid
Sensors
DC-DC
Converter
Service Manual
ML-551x / 651x series
2. Product specifi cations and descriptions
BLDC IF
Engine ASIC
LPEC1
ATMEGA IF
JC13-00020A
Engine Con.
LPEC3
JC13-00035A
I2C IF
Actuator IF
Sensor IF
Local BUS
ADDR 11-bit
DATA 8-bit
VIDEO Controller
[ Engine Controller diagram ]
2-32
FAN IF
HVPS PWM
Duplex IF
Option IF
Engine I/F
FANs
HVPS
Fuser Unit
ADC
Converter
Duplex
SCF/HCF/Finisher
(Option)
Samsung Electronics