Samsung CLP-770ND - Main Printed Board Assembly (PBA) Block Diagram

System Diagram
Service Manual
5-1
Samsung Electronics
5.1 Main PBA Block Diagram
5. System Diagram
Motor
LSU
SCF UNIT
DDR2
32bit
Motor
-OPC BLDC -DEVE BLDC -FUSER BLDC -FEED STEP MOTOR
LSU
-2 Polygon Motor -2 Beam 4 LD -LSU Temp
SCF
UNIT
(OPTION)
Flash Memory
32M/16M
RESET IC
ADDR DATA
SCF_RXD SCF_TXD
OUTBIN SENSOR
MAIN PBA
LPEC3
SODIMM
MODULE
M
U
X
Solenoid/Clutch
-CST Pickup Solenoid
-DEVE K Clutch -REGI Clutch
Fan
F F
AN_CTD1_P/S AN_CTD2_P/S
Sensor-Analog -TEMP_IN -Humidity/TEMP_OUT
PCI
DDR
Control
OPTION
SCL0_LPEC3 SDA0_LPEC3
ASIC
Engine
Control
-
F
user
F
an
-Rear Fan -CHG AC Fan
PTB UNIT
CRUM
FUSER UNIT
Thermistor1
Thermistor2
800W lamp
Thermostat
500W lamp
5V
SATA
USB
EEPROM
24C64
SCL0_v4 SDA0_v4
LOCAL
I2C
SPGPv4
VIDEO CONTROL
PWM
CLOCK
USB 2 0
SATA I/F
M-BUS
DEVE CRUM IF PBA
ACR sensor L/R
DEVE Y UNIT
CRUM
HVPS
5VS
ISP1761
EDI
WLAN
24V1
SCL1_LPEC3 SDA1_LPEC3
FUSER BIAS
MAC UART
PWM
CLOCK
USB
2
.
0
DEVE M UNIT
CRUM
DEVE C UNIT
CRUM
Cover
Switch
24VS1
24V1
Device
USB
DEBUG
3.3V
1.0V 1.1V 1.8V 2.5V
System
SPGPv4
DEBUG_RXD DEBUG_TXD
E-PHY
BCM5241
1W Circuit
nPOWER OFF
PANEL_RXD PANEL_TXD
OP
Panel
VDDQ
1.8.V
0.9V
VTT
SMPS TYPE5 (STAGE3)
DEVE K UNIT
CRUM
Sensor
-FCF Empty -
Feed Sensor
Cassette
-MP Pickup Solenoid -
MP Empty
24V1/24V2/24V3
5V_SMPS
DC Converter
1W
Circuit
nPOWER
_
OFF
5V
nPOWER_SW
EN_SMPS_24V
FUSER CONTROL
PWM Con’
HVPS_AC - PWM_MHV_AC
-
PWM MHV VPP
24VS2
POWER
CORD
FUSER Lamp Control
Feed
Sensor
-Exit Sensor
MP
Empty
FUSER
CONTROL
AC
PWM
_
MHV
_
VPP
- PWM_MHV2_3/4
- HVPS_FAN