Samsung SCX-4828FN/XAZ, Service Manual

Page: 167 / 177

System Diagram
Service Manual
6-2
Samsung Electronics
6.2 Connection Diagram
Main S/
W
INLET
SMPS
CHORUS
3
HVPS
FUSER Unit
ThermoStat
Thermistor
EXIT
Sensor
PickUp
Clutch
Regist Clutch
Front Cover
Micro Switch
Rear Cover
Micro Switch
24
VS
24
V
DEVELOPER Unit
FAN MAIN
FAN LSU
OPC
MHV
DEV
Supply
THV
Varistor
T
D
S
DRUM
M
Main
Motor
MT
BLDC
CL
C R U
M
LSU
INTERLOCK
S/
W
Regi
_
D
px
Sensor
Feed
Sensor
Empty
Sensor
SCF
(O
ption
)
Network
BCM
5241
25
MHz
SOL
24VS
PIC KU P_C LUT CH
24VS
RE GI_C LUT CH
11
12
13
14
nBLD C_ MO TO R_ DIR
BL DC _CLK
BL DC _M OTOR _R EA DY
nBLD C_ MO TO R_ EN
GND
BL DC _M OTOR _B RE AK
GND
GND
24VS
24VS
1
2
3
4
5
6
7
8
9
10
CN
21
MAIN MOTOR
&
PICKUP
,
REGI CLUTCH
1
2
3
4
5
6
7
8
9
10
3.3V
GND
nS ENS _P_ EM PT Y
3.3V
GND
nS ENS _P_ RE GI
3.3V
GND
nS ENS _P_ FE ED
1
2
3
4
5
6
7
8
9
CN
18
SENSOR
1
2
3
1
2
3
1
2
3
1
2
3
3.3V
GND
nS ENS _P_ EX IT
3
4
5
24
VS
3.
3V
3.
3V
SCF
_
RXD
nSCF
_
DET
SCF
_
T
XD
GND GND GND
1 2 3 4 5 6 7 8 9
CN19
SC F I /F
VBUS DM
1
DP
1
GND
1 2 3 4
C N 6
U S B DE VIC E
GND N.
C.
RD
-
3.
3V
_C
T
R
_T
A
P
RD
+
TD
-
3.
3V
_C
T
R
_T
A
P
TD
+
LED
1 POWER
LED
1
LED
2 POWER
LED
2
1 2 3 4 5 6 7 8 9 10 11 12
CN13
NET WO RK I/F
24V
GN D
nLSU _MO T_E N
nR E AD Y_LS U
CLK _L SU_ MO T
nLDO N_LS U
LD_P OW ER 1
GN D
HSY NC _1
nSH _LSU _1
GN D
VD O_ 1_N
VD O_2_P
GN D
5V_LS U
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CN
7
LSU I
/F
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
1
2
3
4
GND GND FAN
_
MAIN
1 2 3
CN 1 1
F A N_ MA IN
3.
3V
SDA
1
_
C
HORUS
3
SCL
1
_
CHORUS
3
GND
4 3 2 1
CN 2 0
CRUM
TH ER MIS TO R
FU SE R _ TH ER M1
1
2
1
2
3
4
5
6
7
8
CN
17
THERMISTOR &
P
_
EXIT
24
VS
FUSER
_
O
N
GND
24
V
GND
24
V
GND
24
V
GND
24
V
GND
5V
GND
5V
GND
5V
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
C N 16
SM PS I /F
GND GND
PWM
_
DEV
_
D
C
PWM
_
MHV
THV_
READ
nTHV
_
E
N
PWM
_
THV
5V
24
VS
24
VS
GND GND
24
V
24
V
1 2 3 4 5 6 7 8 9
10 11 12 13 14
C N 10
HVP S I /F
OPE
LCD (
1
6
X
2
)
LSU
1
2
3
4
5
6
7
8
SPEAKER
LIU
SFX
336
(C
X
8
6710
)
SMART
DAA
GN D
5V
DAT A< 15 >
DAT A< 14 >
DAT A< 13 >
DAT A< 12 >
DAT A< 11 >
DAT A< 10 >
DAT A< 9>
DAT A< 8>
GN D
AD DR <1 >
AD DR <2 >
AD DR <3 >
AD DR <4 >
AD DR <5 >
AD DR <6 >
AD DR <7 >
GN D
GN D
nCS _M OD EM
nRD
nWR
N.C.
nRS T_M OD EM
nIN T_M OD EM
N.C.
3.3V
3.3V
GN D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
CN
4
CONEXANT MODEM I
/F
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
USB 2
.0
ISP
1761
NOR Flash
S
2
9G
L
1
28
N90
TFIR
2
0
(1
6
MB X
1
E
A
)
DDR
2 SDRAM
K
4
T
1
G
164QD
-ZCE
6
(1
28
MB X
1
E
A
)
EEPROM
M
24256
X
1
E
A
DDR
2 SDRAM
SODIMM
(Max 256
M
B
)
Battery
CR
2032
SERIAL Flash
AT25
DF
321
CISM
AFE
HT
82
V
2
6
ADF MOTOR
DRIVER
(TEA
3718 X
2
)
EMPTY
REG EXIT
MT
STEP
ADF
MOTOR
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16
AFE
_
S
IG
SCAN
_
C
ONTROL
1
GND C
IS
_3.
3V
CIS
_
OFFSET
CIS
_
SP
CIS
_
CLK
CIS
_
12
V
CIS
_
BLED
CIS
_
GLED
CIS
_
RLED
GND
CN22
CIS
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 10 11 12
32.768KHz
PLATEN MOTOR DRIVER
A
3983
SLP
OUT
1
A
OUT
1
B
OUT
2
A
OUT
2
B
1 2 3 4
CN3
P LA TE N M OT OR
MT
STEP
PLATEN MOTOR
4 3 2 1
Clock
Generator
ASM
3
P
2863
A
12
MHz
MCLK
VCLK
USB
CLK
FAN LSU
GND
FA N_LS U
5V
nDE V_D ET
CN
9
LSU S
/W
&
FAN
GND
5V
PA NEL _RX D
nRS T_P AN EL
PAN EL _T XD
nSC AN NE R_H OM E
MO D_ BU ZZ ER
KEYC LIC K
MAIN Controller
CN
8
OPE I
/F
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
GND 24
V
5V GND ADF_
MOT
_
NB
ADF_
MOT
_
PHB
ADF_
MOT
_
PHA
ADF_
MOT
_
B
ADF_
MOT
_
A
ADF_
MOT
_
NA
GND nADF
_
P
_
DET
GND nADF
_
P
_
REGI
GND nADF
_
P
_
POS
CN5
AD F MO TOR I/F
5V DM
3
DP
3
GND
1 2 3 4
CN15
DIRE CT US B
(S
CX
-4
828
FN only
)
3.3V
GN D
nS EN S_ OU TB IN
_FU L L
1
2
3
CN
12
OUTBIN FUL
L
Outbin Full
Sensor
1
2
3
24
VS
FAN
_
SMPS
1 2
CN11
F A N_ SM PS
FAN SMPS