Sharp MX-M350N / MX-M350U / MX-M450N / MX-M450U (serv.man4) Service Manual ▷ View online
MX-M350/M450 BLOCK DIAGRAM / ブロック図 1 - 3
ROM Block (Flash & Mask)
SDRAM Block ( Standard & Option )
System
Controller
IC700
420pin-
BGA
I/O G/A
IC32
240pin-
QFP
Address
Buffer
IC726,
729,732
LA[22:2]
LCX245
IC727,
728,730,731
MEMD[31:0]
SysAD[31:0]
SysAD[54:34]
3.3V
FL_VCCW
CODECS0*
CODECS1*
CODECS2*
CODECS3*
FONTCS0*
FONTCS1*
FONTCS2*
FONTCS3*
FONTCS4*
FONTCS5*
FONTCS6*
FONTCS7*
ROMBUFOE*
ROMBUFDIR*
FMCS8&10:CN4
FMCS12&CODE
CS3:CN5
FONTCS0:CN6
FMCS0:CN7
FMCS2:CN7
FMCS4:CN7
FMCS6:CN7
DIP SW
SW2
nMFP_VPPON
SDRAM
IC4,5,6,7
(ON BOARD)
128MB
MD[63:0]
MAA[12:0]
DIMM Slot
144pin
SO-DIMM
CN3
(128,256
MB)
SDA,SCL
SDQMA[7:0]
MWE
MCS0
MRASA
MCASA
BSEL0A,1A
CKEA
MWE
MCS1A,2A
MRASA
MCASA
BSEL0A,1A
CKEA
DRCLK
MEMCLK0
MEMCLK1,2,3,4
FET
Q29
DIMM Slot
CN4:16MB
-Flash
CN5:8MB-
Flash
CN6:8MB-
Flash
CN7:32MB
-Mask
(PS Kanji)
System
Controller
IC700
420pin-
BGA
Clock
buffer
IC9
OSC
X700
74.9MHz
MX-M350/M450 BLOCK DIAGRAM / ブロック図 1 - 4
PCI Block ( ICU & Option )
I/O Block ( EEPROM & Misc I/O )
System
Controller
IC700
420pin-BGA
PCI-Bus
ICU ASIC
IC25
304pin-QFP
PM2060i
IC725
52pin-QFP
OSC
X2
40.57MHz
OSC
X5
64MHz
Scanner
I/F
CN702
LVDS
IC18
Buffer
IC8
SDRAM
IC27
32MB
CN9
SOFT-NIC
(100Base-T)
PM22-A
IC721 160pin-
QFP
PM22-B
IC723 160pin-
QFP
OSC X1
66MHz
Clock buffer
IC29
OSC X3
33.333MHz
IDE I/F
CN701
IDE Controller IC756
144pin-QFP
USB Controller
IC703 100pin-QFP
XTAL X701
24MHz
USB I/F
CN700
I/O G/A
IC32
240pin-QFP
PCIREQx
PCIGNTx
Engine
I/F
CN8
OSC
X4
31.554MHz
Selector
OSC
X703
66.666MHz
USB HOST Controller
IC763 100pin-QFP
XTAL X704
12MHz
USB HOST I/F
CN704
232C Driver
IC42
CN14
RIC I/F (RS232C)
Engine I/F
System
Controller
IC700
420pin-BGA
LCX373
IC733,
735,737
IOA[15,14,6:1]
LDATA[15:0]
LCX245
IC734,736
IOD[7:0]
DIP-SW
OSC
X7
14.7456MHz
EEPROM
IC36
64Kbit
IOA[13:1]
IOD[7:0]
CN8
LCD
Controller
IC53
TD62503F
IC41
Switcher
3.3V
SRAM
IC55
4Mbit
IOA[18:0]
SW0,SW1
IOD[7:0]
ALE,ALE-H
CN702
Scanner I/F
RTC
NJU6356
IC40
Xtal
32.768kHz
Battery
(BT1)
Switcher
5V
IOA[14:1]
IOD[15:0]
TD62503F
IC38
CPLD
IC765
IOA[21,2:0]
IOD[3:0]
D/A
Converter
IC766
I/O G/A
IC32
240pin-QFP
MX-M350/M450 BLOCK DIAGRAM / ブロック図 1 - 5
3. SOFT NIC PWB / ソフト NIC PWB
CN1
(to controller)
PCI-Bus
Ethernet
Controller
DP83816
IC1
CN3
LAN I/F
EEPROM
IC3
1Kbit
OSC
X1
25MHz
MX-M350/M450 BLOCK DIAGRAM / ブロック図 1 - 6
4. PCU PWB
COMP
ARA
TO
R
+24V1
DCPS
FW
FWS
EEPR
OM
Oscillator
OSC
(LSU
,MO
T
OR,PWM)
DC po
w
e
r
Clutch, solenoid, rela
y
PWM output (F
AN)
CONTR
OLLER
HSYNC
,P
A
G
E
VIDEO signal
MO
TOR DRIVER
P
aper e
xit motor
RESET IC
CLOCK
System
RESET
LED
,
COMP
ARA
TO
R
High
temper
ature
protection
Ther
mistor open detection
Fusing heater control
CLOCK
IC
REGURA
TOR-
+5VLD
LSU
PGM cloc
k, control signal
(Inter
loc
k line)
BD
, control signal,
VIDEO signal
Sensor input
Sensor input
DRIVE
CIRCUIT
T
o
ner motor
Lift motor
B
UP_PR (Rela
y
)
RES_PCU
XPCU_RES
XPCU_RES
U
A
R
T
(DTR,DSR)
RES
COMP
ARA
TO
R
(FINISHER1,2,DESK)
(FINISHER1,2,DESK)
U
A
R
T
(TXD
,RXD)
(DESK)
+5V2 +3.3V1
PCU
Analog input (Fusing ther
m
istor)
RO
M
FLASH
S-RAM
Option detection
CPU
High v
oltage troub
le detection
HV un
High v
oltage control signal (Enab
le, PWM output)
+24V
(Inter
loc
k line)
XT
AL
D
ATA
,
CLOCK
Ther
mistor open detection
Fusing control signal
SWITCH
DOOR
+24V1
+24V
(Inter
loc
k line)
Door open/close detection (Inter
loc
k s
witch)
+24V
DCPS
(Inter
loc
k line)
+24V
RELA
Y
PWB
OP-AMP
Laser po
w
er control
U
A
R
T
(TXD
,RXD)
(FINISHER1,2)
(MSW
-MON)
P
o
w
e
r s
w
itch
monitor
UAR
T
POF
OP-AMP
Fusing ther
mistor
Temper
ature/humidity sensor
P
aper width detection
Toner concentr
ation
Analog input
Flash ROM write control (FWP)
OP-AMP
Analog po
w
e
r
(Vref)
+12V1
+12V2
+5V1
FWS
Direct control mode
select signal
JP only
FPGA
JUMPER
EX only
D
A
T
A
(D0 - D15)
ADDRESS(A0 - A20)
Fusing
control signal
B
UP_PR
(Rela
y
)
+12V2
ASIC
I/O
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