Read Sharp MX-1800N (serv.man19) Service Manual online
MX-1800N ELECTRICAL SECTION 11 – 1
MX-1800N
Service Manual
[11] ELECTRICAL SECTION
1. Block diagram
A. System block diagram
DM_K
DVM_K
DM_CL
DVM_CL
CPFM
RRM
POM
FUM
OSM
PFM
CPFC
1TURC
CLUM1
PCSS
CPUC1
DH1
CLUM2
MPUC
CPUC2
MPFS
MPGS
PGM
LSUSS
POFM_F
OZFM
PSFM
HL1_U
POFM_R
HL2_L
HL3_U
DL_K
DL_M
DL_C
DL_Y
ADUM_L
TNM_K
MC
2TC
1TC
DESK
FIN
INNER
TNM_C
TNM_M
TNM_Y
PPD1
POD1
PPD2
POD2
PO
D3
TF
D3
TFD2
HPOS
DSW_R
DHPD_K
DHPD_CL
REGS_F
PCS
REGS_R
MPFD
MPLD1
MTOP1
MTOP2
MPED
CPFD1
MPWD
CLUD1
CPED1
CSS1
CSPD1
CSPD2
CPED2
CSS2
CPFD2
CLUD2
1TUD_K
1TNFD
1TUD_CL
DSW_ADU
APPD1
TCS_K
APPD2
TCS_C
TCS_M
DVTYP_K
TCS_Y
DVCRUM_K
TH/HUD_M
TH1_LSU
TH1_FU
TH2_FU
MSW
TH3_FU
DVTYP_C
DVTYP_M
DVTYP_Y
DVCRUM_C
DVCRUM_M
DVCRUM_Y
DSW_F
COINVENDER
DHSW
PNC
MIM
ORS_LED
ORS_PD
CL
MHPS
OCSW
CARD
READER
AUDITOR
PNC
PCU
PWB
SCNC
PWB
INVERTER
PWB
OPE
PWB
LVDS
PWB
CCD
PWB
MOTHER
PWB
LSU
CNT
PWB
MFPC
PWB
DRIVER
MAIN
PWB
DRIVER
S
UB
PWB
HL
PWB
AC
PWB
DCPS
HDD
RD
I/F
PWB
LD_K
PWB
BD_K
PWB
LD_C
PWB
LD_M
PWB
LD_Y
PWB
WTNM
WH
PWB
LCD
TOUCH
PANEL
LSU
UNIT
FUSER
UNIT
DV_K
UNIT
DV_C
UNIT
DV_M
UNIT
DV_Y
UNIT
TONER_K
UNIT
TONER_C
UNIT
T
ONER_M
UNIT
TONER_Y
UNIT
PS
UNIT
REGIST
SENSOR
UNIT
DERIVERY
UNIT
PROCESS
DRIVE
UNIT
PAPER
F
EED
1
UNIT
PAPER
FEED
DRIVE
UNIT
PAPER
FEED
2
UNIT
RIGHT
DOOR
UNIT
MANUAL
PAPER
FEED
UNIT
OPERATION
UNIT
CL
INVERTER
PWB
POWER
S
W
PWB
SCA
NNER
UNIT
FAX
2
OPTION
OPTION
OPTION
OPTION
OPTION
AC
IN
SPFM
SGS
STMPS
SPRM
SPFC
SRRC
SPLS1
SPPD1
SOCD
SCOV
SPED
SPLS2
SPPD2
SPPD3
SPPD4
SPPD5
SPWS
RSPF
PWB
RSPF
UNIT
OPTION
DHS1
DH_DESK
DSW_C
OPTION
HDDFM
CPUFM
Japan
only
FAX
1
OPTION
DOCC
PWB
MX-1800N ELECTRICAL SECTION 11 – 2
B. MFP controller PWB
CPU
RM7965A
(RM7065C
RM7965)
SYSTEM
ASIC
SO-DIMM
DIMM2
SO-DIMM
DIMM1
DDR
SDRAMx2
DDR bus 1
ICU
ASIC
SRAM
.....
LOCAL bus
(ROM bus)
(ROM bus)
PCI bus 2
IDE bus
PCI
bus
1
ENGINE
IF
connector
LVDSIC
385
. 386
. 047
. 048
LSU IF
SCAN IN IF
VIDEOIF
SCAN OUT IF
OPE IF
SDR
FLASH
FLASH IF
LAN
JACK
LAN
USB-D
USB-H
ICU-IMG IF
LVDS
SO-DIMM
DIMM3
SO-DIMM
DIMM4
DDR bus 3
64bits width
64bits width
32bits width
EEPROM
256Kbits
I2C (Ch.0)
I2C (Ch.0)
I2C (Ch.1)
EEPROM
2Kbits
MicroWire
RTC
Battery
RIC
(RS232C)
UART
RS232C
Transmitter
UART
PCU
SCN
FAX 1st
UART
SCN
FAX 1st
UART
Patch
UART
for Debug
CPLD
Piano
SW
USB
DEV
DEV
USB
HOST
VBUS
SW
Ether
MAC
SDR
SDRAM
IF
ASIC
ATA
connector
IDE
ASIC
CPLD
IMG
ASIC
LOCAL bus
(LSI bus)
IO
EXPAND
FLASH
Mem.x2
72pinDIMM Socket
72pinDIMM Socket
72pinDIMM Socket
Control
signals
signals
IMG-A Bus
(Auto Color)
IMG-B Bus
(Area separation)
IMG-C Bus
(Image process)
DDR bus 2
SYSAD bus
MX-1800N ELECTRICAL SECTION 11 – 3
C. PCU PWB
IC
1
CP
U
H8
S/2373
IC5
SRAM
(1M
b
it
)
F
L
ASH
ROM
(16M
bit)
IC
6
EEP
R
O
M
6
4kbi
t)
IC
9
PMC
A
S
IC
IC8
I/O
A
SIC
IC7
DFF
LCX
5
7
4
B
u
s
DATABus
[15:0]
IC27/IC30/IC31/IC37
MUX
HC151x5
FINISHER
DESK
UA
R
T
UA
R
T
IC4
RESET
IC
Analog
Input
Fuser
T
hermistr
(TH_UM/LM/US)
Toner
D
etector
(TCS_K/C/M/Y)
Process
C
ont.
sensor
(PCS_K/CL)
Resist
sensor
(REGS_F/R)
To
LS
U
Via
Mo
ther
Optional
To
MF
PC
Via
Mo
ther
UAR
T
UAR
T
DC
Power
Supply
X1
Xtal
19.6608MHz
Sensor
Input
PP
D2
Sen
so
r
In
p
u
t
CP
F
D
1
/
C
P
F
D
2
/
H
P
O
S
/
P
P
D
1
/
D
H
PD_CL
/
DHPD_K
/
PO
D3
/
P
O
D
2
DSW_F
/
D
SW_R
/
D
SW_C
/
C
L
U
D
1/
C
L
U
D
2/
CS
P
D
1
/
C
S
PD
2
/
1TUD_K
/1
TUD_CL
MU
X
HC
15
1
CRUM
C
R
UM_K/C
/M/
Y
I2
C
B
u
s
IC71
D/A
Conv
(TCS/REGS
cont)
Load
Control
O
utput
Coi
n
vendor
(O
ptional)
S
te
pping
M
o
to
r
C
o
n
tr
o
l
P
o
ut
M
otor
P
O
M)
/
A
DU
M
o
to
r
A
D
M
L
)
/
Shifter
M
ot
or
OS
M)
/
Resist
M
otor
R
R
M)
/
P
S
F
Motor
PF
M)
D
rum
M
otor
B
K
(D
M
_K)
/
Drum
Motor
CL
(D
M
_CL)
Fuser
M
otor
(FU
M
)
Fuser
uni
t
HL
control
HL
_UM/
L
M
/US
Sensor
In
put
C
S
S
11-1
4
/
C
SS21
-24
POD
1
A
P
P
D
1/A
P
P
D
2
Load
contr
o
l
Output
MPG
S
/
C
PU
C1
/
C
PUC
2
/
PC
S
S
/
C
P
F
C
/
L
S
U
S
S
1
/L
SUS
S
2(O
pti
o
n
a
l)
/
MPU
C
/
M
PF
S
/
1
T
UR
C
FAN
Motor
C
ontrol
PS
FAN
(PSFM)
/
Oz
o
n
e
F
A
N
(O
Z
F
M
)
/
Pout
FAN
(P
OFM
_
F
/
P
O
F
M
_
R
)
HV
MC
/
T
C
unit
3-wiredserial
Drum
L
amp
(DL_
K/C/M/
Y)
PWM
DC
Motor
Control
D
V
M
o
to
rB
K(
D
V
M
_
K
)
/
DV
Mo
to
r
C
L
(D
V
M_CL)
Paper
F
e
ed
M
otor
(CP
F
M)
Sensor
In
put
C
S
S1
/
C
P
E
D2
/
C
SS
2
/
CP
ED1
MP
F
D
/
M
P
E
D
/
C
P
W
D
1
1
-1
2
T
F
D
2/1
T
N
F
D
/
W
E
N
D
D
/W
IN
ID
Motor
L
ock
D
etect
FAN_LD1-2
/
DVM
C_L
D
/
DVM
B
_LD
/
P
F
M_L
D
/
F
U
M
_LD
Fuser
T
he
rmi
stor
o
pen
detect
TH
OP
EN
_U
M
/
LM
Sen
so
r
In
p
u
t
DV
SE
T
(K
/C
/M
/Y
)
DR
DET
(K/C
/M
/Y)
IC73
Ana
log
MU
X
Analog
Input
Temp/Hum
sensor
(TH_M/HUD_M)
LSU
T
hermistor
(TH1_LSU)
DV
detector
(DVTYP_C/M/Y/K)
Multi-bypass
tray
width
snesor
(MPWD)
FW
S
ensor
In
p
u
t
COI
N
V
END
O
R
(Optional)
CV_C
LCO
PY
/
CV
_
C
O
P
Y
Load
output
Mec
h
anical
Coun
ter
(O
ptional)
PN
C_K
/
PN
C_CL
Sy
ncr
o
nou
s
M
otor
Tone
r
M
o
tor
(T
NM
_K/C
/M
/Y)
Waste
T
o
n
e
r
M
otor
(WTNM
)
DC
Motor
Lif
t
U
p
M
otor
(CLU
M1
/CLUM
2
)
Sensor
In
put
DSW
_
ADU
/
TFD
3
/
M
P
L
D
/M
T
O
P
1
/M
T
O
P
2/M
P
E
D
MUX
H
C
151
RD
I/F
PWB
Write
Protect
Address
B
us[
2
0:0]
MX-1800N ELECTRICAL SECTION 11 – 4
D. Scanner control PWB
SCNcntPWB
RSPF
Unit
RSPF
FEED
MOTOR
SCANNER
MOTOR
RSPF
RVS
MOTOR
PHOTO
SENSOR
CLUTCH
FlashROM
<Socket>
8Mbit
/CS0
(/CS0
R
ESERVE)
SDRAM
BUS
CCD
PWB
With
AFE&LVDS
LVDS
EEPROM
32Kbit
I2C
LAMP
UN
STMP
UN
RGB10bit*3
LVDS
Driver
4bit
*2
LVDS
RGB8bit*3
RGB8bit*3
LVDS
LVDS
Driver
30bit
MHPS
LVDS
Receiver
4bit
*2
PANEL
PWB
CARD
READER
AUDITOR
OCSW
Original
detection
(Light
receivin)
Original
detection
(Light
emitting)
LCD
INVERTER
P
WB
LVDS
CPU
H8S/2373
XTAL
19.6608MHz
ADDRESS/DATA
BUS
SRAM
1Mbit
/CS2
SCAN
ASIC
/CS3
XTAL
28.795MHz
or
22.7425MHz
SDRAM
128Mbit
IO
ASIC
/CS5
Mother
PWB
(MFP
PWB)
<Engine/Controller>
LVDS
Driver
28bit
ASIC
/CS4
LVDS
Receiver
30bit
