Main Controller (Main Board) - Samsung MultiXpress K7 Series Service Manual

2.12.1. Main Controller (Main Board)

NOTE
The main controller for previous model is not compatible with new model(IR UI). When replacing the main controller, be
careful not to be replaced with incompatible one.
1) Main Controller for previous model
The main controller consists of the main processor(A3000), memory(DDR3 4GB), Micro SD(4GB), 1G Ethernet
PHY,USB3.0 HUB, Micom(Power/Fuser control) and can control Video/UI/FAX signal interface connection, motor driving
IC, Engine signal interface connection, power interface.
The main processor (Quad Core 1.5GHz CPU) controls video, engine, UI display and communicates with the various
devices. The HDD is connected to the main controller by SATA cable and to the other device (ADF, DCF, Finisher,
Modem) by UART.
1) Main Controller Block Diagram
TFT LCD
WIFI/ NFC MODULE
CARD READER
HUMI DITY , MODEL SEL , AC Level
ENG I NE
STEP M O T
PICKUP1/2, FEED , REGI,
DUPLEX _RET/1/2
FUSER RELEASE , TONER SUPPLY YM /CK
TONER RESERVOIR YM /CK
SENSOR
EMPTY 1 /2, LIFT 1/2, PRE FEED 1/2, FEED
REGI, MP _EMPTY /SIZEL /W , CURL 2,
FUSER IN /OUT , BIN_FULL_EXIT 1/2,
DUPLEX _JAM 1/2, DUPLEX _RETURN ,
PAPER _SIZE 1/2, WASTE _INSTALL ,
RESERVOIR Y/M /C /K,
FUSER POS ,
COVER OPEN FRONT /SIDE,
SCAN HOME / APS 1, 2/LSU,
PLATEN COVER OPEN 1, 2
SOLENOID / C LT
CLT : MP
SOL : MP / EXIT
DC M O T
CST LOCK 1/2
2) Main Controller Clock Diagram
Copyright© 1995-2017 SAMSUNG. All rights reserved.
USB 3. 0 HUB P B A
OPE
10 . 1"
FR ONT
R TS 5401
USB
4Port HUB
HOST
USB
REAR
R TS 5401
3. 0
USB
4Port HUB
HOS HOST
1/ 2
USB
REAR
USB 3. 0
DEVICE DEVICE
DD R C
DDR 3 4G
800 Mhz
8Gb ( x16) , x4
64 bit
A N A LOG MUX
MP SIZE / PAPER SIZE 1, 2 /
ADC
INNER, OUTTER , EXIT
1. 8V
Step Motor FB / 24V FB
D R V 8825
X10
CTRL.
SI- 7321 M
X2
FAN
EXIT 1/2/3, SMPS ,
DEVE ,
GPIO
FUSER OUT CTRL.
PWM
BLDC
PTB/K, FUSER
HVPS
MHV K
DEV DC K
DEV AC VPP K
DEV AC
DEV AC EN K
EN THV / THV K
THV / THV CLEAN
SAW / FUSER BIAS
FUSER
SCANNER
PTB
Ch2
TONER C R UM
DSDF
OPC C R UM
Ch1
R TC
nd
2 NW
Ch0
PL A TEN
MSOK
Ch0
SCANIF SCANIF
I 2C SPI
CH 0 CH 1
U A R T
FUSER
M A GIC
IO
PCIex
A 3000 M A C 0
M A C 1
S A TA
LSUC
HP V C
MMC
2. Product Specifications and Description
Ch0
DE B UG _MCB
Ch1
DE B UG _SCB
Ch2
DE B UG _ENGINE
Ch3
ENGINE PANEL
Ch4
A TSAMD 2E 15
Ch5
DSDF
Ch6
DCF
Ch7
FINISHER
Ch9
EFI
Ch10
MODEM 0
Ch11
MODEM 1
FUSER UNIT
NCTH 1 C /D
12Bit ADC A TSAMD 2E 15
External ADC 12b
READ MHV YMCK , THV YMCK
TC YMCK / CTD , ACR / FUSER / WTB
EFI VIDEO
CONT R OLLER
R TL 8211 E RJ 45
BASE
Gigabit phy
R TL 8211 E
RJ 45
Gigabit phy EXTEND
OPTION KIT
S A TA
2. 5", 320GB
4BEAM LSU
YMCK
LD1
CTRL.
LSU _MOT 1
VDO 1B_K
VDO 2B_K
VDO 3B_K
VDO DATA
VDO 4B_K
mic roSD
CTRL. 4GB
Boot Device
NCTH 2 C /D
A N A LOG MUX
2-95