Read Sharp MX-B381 / MX-B401 (serv.man9) Service Manual online
MX-B381/B401 BLOCK DIAGRAM 1 – 3
3. PCU PWB
IC37
CPU
H8S/2373
IC47
or
IC48
RESET
IC
X1
Xtal
19.6608MHz
DC
Power
Supply
To
MFPC
Via
L
SU-Mother
To
LSU-Mother
FINISHER
DESK
Optional
IC29
EEPROM
(64kbit)
FLASH
ROM
IC39
SRAM
(1Mbit)
IC11
PMC
ASIC
Load
Control
O
utput
Coin-vendor
(Optional)
Sensor
Input
CPED1
/
MPED
/
M
PLD1
/
T
FD2
/
1
TNFD
Motor
L
ock
Detect
FAN_LD1/2
/
DVM_BK_LD
Fuser
T
hermistor
o
pen
d
etect
(THOPEN_MAIN)/
T
HOPEN_MAIN_LOW
/
THOPEN_MAIN_SUB
CRU
initial
detect
2TCCRU_in
/
F
UCRU_in
TNCRU_K
Fuser
unit
HL
control
HL_MAIN/HL_LOW/HL_E
HV
MC
/
T
C
DC
Motor
Control
DV
Motor
B
K(DVM_K)
Fuser
M
otor
(FUM)
FAN
Motor
Control
PS
FAN
(PSFM)
/
Procon
FAN
1
(PROFM1)
/
Procon
FAN
2
(PROFM2)
/
PoutFAN
(POFM)
/
Fuser
F
AN
(FUFM)/
LSU
F
AN
(LSUFM)
Drum
Lamp
(DL_K)
IC49
/
IC50
/
IC51
MUX
HC151x3
Sensor
Input
PPD2
Motor
Lock
Detect
FAN_LD4
Fuser
Thermistor
open
detect
THOPEN_EX1
Stepping
Motor
c
ontrol
Pout
Motor(POM)
/
Paper
F
eed
M
otor
(CPFM)
/
Resist
Motor(RRM)
Load
c
ontrol
Output
MPFS
/
C
PUC1
/
1
TURC_1
/
CPFC
/
A
DUC1
/
2
TURC
/
H
LPCS
/
DVCRU_K
Sensor
Input
CPFD1
/
PPD1
/
DHPD_K
/
POD2
/
DSW_F
/
D
SW_R
/
CLUD1
/
CSPD1
CRU
initial
detect
DRCRU_K_in
Synchronous
Motor
Toner
M
otor
(TNM_K)
DC
Motor
Lift
U
p
M
otor
(CLUM)
Analog
Input
Fuser
Thermistor(TH_MAIN/LOW/SUB/EX1/EX2)
Toner
C
ont.
sensor(TCS_K)
Process
C
ont.BK(REGS_R)
IC44
Spread
Spectrum
CRUM
CRUM_K
FW
UART
UART
UART
UART
I2C
B
us
AddressBus[20:0]
DATABus[15:0]
CLOCK
I2C
B
us
3-wired
PWM
Not
Mount
CLOCK
Load
c
ontrol
Output
FUCRU
FAN
Motor
Control
HDD
F
AN
(HDDFM)
IC34
CPLD
I2C
B
us
IC26
Analog
MUX
Write-Protect
IC23
D/A
C
onv
(TCS/REGS
cont)
Sensor
Input
CSS11-13
/
POD1
/
APPD1
/APPD2
/
1
TUD_K
/
1TUD_CL
Motor
Lock
D
etect
FUM_LD
/
FAN_LD3
/
F
AN_LD8
Fuser
Thermistor
open
detect
(THOPEN_MAIN_CS)
/
THOPEN_MAIN_EX2
CRU
initial
detect
DVCRU_K_in
/
D
RSET
TNCRU_K
HV
error
d
etect
PTC_ERR
/
M
C_BK_ERR
Drum
Lamp
open
detect
DLOPEN_K
Sensor
Input
COIN
VENDOR
(Optional)
CV_CLCOPY
/
CV_COPY
Analog
Input
Temp/Hum
sensor(TH_M/HUD_M)
LSU
T
hermistor(TH1_LSU)
DV
detector(DVTYP_K)
Multi-bypass
tray
w
idth
s
ensor(MPWD)
Click on the first or last page to see other MX-B381 / MX-B401 (serv.man9) service manuals if exist.