Hardware Configuration - Samsung SCX-472 series Service Manual

2.2.5. Hardware configuration

The SCX-4729 series Electrical Circuit System consists of the following:
•
Main board (System board)
•
OPE board
•
SMPS board
•
HVPS board
•
Fax board
Diagram of the SCX-4729 series Electrical Circuit
S ys tem Bo ard
DDR3
16b it(On d ie )
128MB
DDR
C o n tr o l
EEP ROM
S CX-4729FD/FW
I2C
:64KB
C3-Ne xt
VIDEO CONTROL
CRUM IF
P WM C LOC K US B 2.0
MAC
MII
(AC201A1)
DC-DC Co n ve rte r
SN1001043 : 1.2V/1.5V/3.3V
HVP S : EP & THV High Volta ge output
Cove r ope n de te c t
Binfull/ Re gi/ fe e d/ P _e m pty s e ns or
Crum IF / P ic kup & re gi c lutc h
DEVE K UNIT
POWER
CRUM
SCX-4729 series has a system board of integrated engine controller and video controller.
The engine controller controls all modules required to print, that is, LSU, HVPS, SMPS, FAN, Fuser, etc.
It communicates with the video control block inside CPU for printing. And it has the interface for all video sync signal
to print out the video data.
The video controller receives print data from the host through network or USB Port. It takes this information and generates
printable video bitmap data.
The main board adopts the 533 MHz CPU, on board DDR2 memory (128MB) to perform printing jobs successfully.
Copyright© 1995-2012 SAMSUNG. All rights reserved.
Motor – S te p(A4984)
Sc a n ADF (2)
S e ria l Nor
MODEM IF
: 20MB
- Loc a l bus (A 7bit D 8bit)
(16MB + 4MB)
CIS IF
LAFE1001
I2C
S P I
S DIO
En g in e
UAR T
TR(x2)
5V
Mic ro S/W
(h vp s )
Kin g b ird SMPS(NEW)
CORD
RTC
CR2032(T.B.D)
CIS LED Drive r(AK7864)
ABC Chip
(S W3304B)
LSU
Vid e o
IF
24VS
FET(x2)
FDC642
Em b e d d e d US B
P IO o r UAR T
WLAN IF
W-m ode l only
2. Product specification and description
Motor S te p(2)
S pe a ke r
SCAN ADF
MODEM IF
S e ns or (4)
-. Cone xa nt
-. ADF Cove r ADF_P _DET
ADF_P _P OS S c a n hom e
CIS Module
Motor IC-Le s s (2)
BLDC MAIN (1)
LS U P -Motor (1)
LS U Vide o Fa n (1)
-. Dua l be a m -. MAIN
-. Ma in : P _Exit S e ns or
FUS ER UNIT
Co n ta c t
Th e rm is to r
850W la m p Th e rm o s ta t
US B2.0 De vic e
UI
2-Line LCD OP E
2-20