Read Sharp MX-M350N / MX-M350U / MX-M450N / MX-M450U (serv.man4) Service Manual online
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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