Sharp MX-6500N / MX-7500N (serv.man28) Service Manual ▷ View online
MX-7500N ELECTRICAL SECTION 14 – 37
HL_UW
Heater lamp assist
Heater lamp assist
control
control
–
Heater lamp
ON
CN23
35
PCU PWB
HLPCD
Fusing pressure
detection
detection
Fusing pressure
detection
detection
Pressed
state
Released
state
CN10
8
PCU PWB
HUD_M
Humidity sensor
Humidity sensor
detection
detection
–
–
CN25
23
PCU PWB
Analog
HV_REM_MC
High voltage remote
signal (MC/TC)
signal (MC/TC)
High voltage remote
signal (MC/TC)
signal (MC/TC)
–
High voltage
output
enable
CN23
12
PCU PWB
HV_REM_MC
High voltage remote
signal (MC/TC)
signal (MC/TC)
High voltage remote
signal (MC/TC)
signal (MC/TC)
–
High voltage
output
enable
CN23
15
PCU PWB
HV_REM_TC2
High voltage remote
signal (TC)
signal (TC)
High voltage remote
signal (TC)
signal (TC)
–
High voltage
output
enable
CN12
28
PCU PWB
JOBEND_INT
LSU ASIC interruption
LSU ASIC interruption
–
–
CN25
10
PCU PWB
JOBEND_INT_C
LSU ASIC interruption
LSU ASIC interruption
(C) direction
(C) direction
C
interruption
–
CN25
13
PCU PWB
JOBEND_INT_K
LSU ASIC interruption
LSU ASIC interruption
(K) direction
(K) direction
K
interruption
–
CN25
14
PCU PWB
JOBEND_INT_M
LSU ASIC interruption
LSU ASIC interruption
(M) direction
(M) direction
M
interruption
–
CN25
12
PCU PWB
JOBEND_INT_Y
LSU ASIC interruption
LSU ASIC interruption
(Y) direction
(Y) direction
Y
interruption
–
CN25
11
PCU PWB
LCC_D
LCC/LCT judgment
detection
detection
LCC/LCT judgment
detection
detection
–
CN4
8
PCU PWB
LCCC
LCC transport clutch
LCC transport clutch
control
control
Clutch ON
–
CN10
2
PCU PWB
LCHM1_CLK
LCC horizontal transport
motor 1 CLK
motor 1 CLK
LCC horizontal transport
motor 1 CLK
motor 1 CLK
–
–
CN33
B6
PCU PWB
LCHM1_EN
LCC horizontal transport
motor 1 ON/OFF
motor 1 ON/OFF
LCC horizontal transport
motor 1 ON/OFF
motor 1 ON/OFF
–
Motor ON
CN33
B5
PCU PWB
LCHM1_FULL
LCC horizontal transport
motor 1 phase switch
motor 1 phase switch
LCC horizontal transport
motor 1 phase switch
motor 1 phase switch
–
–
CN33
B3
PCU PWB
LCHM1_VREF
LCC horizontal transport
motor 1 electric current
switch
motor 1 electric current
switch
LCC horizontal transport
motor 1 electric current
switch
motor 1 electric current
switch
–
–
CN33
B4
PCU PWB
LCHM2_CLK
LCC horizontal transport
motor 2 CLK
motor 2 CLK
LCC horizontal transport
motor 2 CLK
motor 2 CLK
–
–
CN33
B14
PCU PWB
LCHM2_EN
LCC horizontal transport
motor 2 ON/OFF
motor 2 ON/OFF
LCC horizontal transport
motor 2 ON/OFF
motor 2 ON/OFF
–
Motor ON
CN33
B13
PCU PWB
LCHM2_FULL
LCC horizontal transport
motor 2 phase switch
motor 2 phase switch
LCC horizontal transport
motor 2 phase switch
motor 2 phase switch
–
–
CN33
B11
PCU PWB
LCHM2_VREF
LCC horizontal transport
motor 2 electric current
switch
motor 2 electric current
switch
LCC horizontal transport
motor 2 electric current
switch
motor 2 electric current
switch
–
–
CN33
B12
PCU PWB
LED1
Status light LED 1
Status light LED 1
LED turn on
–
CN28
4
PCU PWB
LED2
Status light LED 2
Status light LED 2
LED turn on
–
CN28
5
PCU PWB
LED3
Status light LED 3
Status light LED 3
LED turn on
–
CN28
6
PCU PWB
LIAM_A
LSU skew correction
motor A phase
motor A phase
LSU skew correction
motor A phase
motor A phase
–
–
CN31
15
PCU PWB
LIAM_B
LSU skew correction
motor B phase
motor B phase
LSU skew correction
motor B phase
motor B phase
–
–
CN31
14
PCU PWB
LIAM_C_EN
LSU skew correction
motor C ON/OFF
motor C ON/OFF
LSU skew correction
motor C ON/OFF
motor C ON/OFF
Motor ON
–
CN31
10
PCU PWB
LIAM_K_EN
LSU skew correction
motor K ON/OFF
motor K ON/OFF
LSU skew correction
motor K ON/OFF
motor K ON/OFF
Motor ON
–
CN31
11
PCU PWB
LIAM_M_EN
LSU skew correction
motor M ON/OFF
motor M ON/OFF
LSU skew correction
motor M ON/OFF
motor M ON/OFF
Motor ON
–
CN31
9
PCU PWB
LIAM_XA
LSU skew correction
motor XA phase
motor XA phase
LSU skew correction
motor XA phase
motor XA phase
–
–
CN31
13
PCU PWB
LIAM_XB
LSU skew correction
motor XB phase
motor XB phase
LSU skew correction
motor XB phase
motor XB phase
–
–
CN31
12
PCU PWB
LIAM_Y_EN
LSU skew correction
motor Y ON/OFF
motor Y ON/OFF
LSU skew correction
motor Y ON/OFF
motor Y ON/OFF
Motor ON
–
CN31
8
PCU PWB
LIAMHP_C
LSU skew correction HP
detection C
detection C
LSU skew correction HP
detection C
detection C
Home posi-
tion
tion
–
CN31
3
PCU PWB
LIAMHP_K
LSU skew correction HP
detection K
detection K
LSU skew correction HP
detection K
detection K
Home posi-
tion
tion
–
CN31
4
PCU PWB
LIAMHP_M
LSU skew correction HP
detection M
detection M
LSU skew correction HP
detection M
detection M
Home posi-
tion
tion
–
CN31
2
PCU PWB
LIAMHP_Y
LSU skew correction HP
detection Y
detection Y
LSU skew correction HP
detection Y
detection Y
Home posi-
tion
tion
–
CN31
1
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector
No.
Pin
No.
No.
PWB name
NOTE
L
H
MX-7500N ELECTRICAL SECTION 14 – 38
LPPD
LCC paper entry
detection
detection
LCC paper entry
detection
detection
Paper
presence
–
CN6
14
PCU PWB
LSU_RST
LSUASIC
communication
communication
LSUASIC
communication (LSU
reset)
communication (LSU
reset)
–
–
CN25
7
PCU PWB
LSUSS_CL
LSU shutter solenoid
Operate the LSU shutter
solenoid
solenoid
Solenoid ON
–
CN25
29
PCU PWB
MC_BK_ERR
Main charger BK error
Main charger BK error
detection
detection
High voltage
error state
–
CN23
17
PCU PWB
MC_CL_ERR
Main charger CL error
Main charger CL error
detection
detection
High voltage
error state
–
CN23
19
PCU PWB
/MC_CLK
MC high voltage serial
clock
clock
MC high voltage serial
clock signal
clock signal
–
–
CN23
9
PCU PWB
/MC_DATA
MC high voltage serial
data
data
MC high voltage serial
data signal
data signal
–
–
CN23
7
PCU PWB
/MC_LD
MC high voltage serial
latch
latch
MC high voltage serial
latch signal
latch signal
–
–
CN23
11
PCU PWB
/MC_LD2
MC high voltage serial
latch 2
latch 2
MC high voltage serial
latch 2
latch 2
–
–
CN23
13
PCU PWB
MHPS Scanner
home
position
sensor [Transmission
type]
type]
Scanner home position
detection
detection
–
Home
position
CN17
1
SCN-
MotherCNT
MotherCNT
ON for
5VL_5VO only
5VL_5VO only
MIM_*
Scanner motor
[Stepping motor]
[Stepping motor]
Scanner (reading)
section
section
–
–
CN2
1, 2,
3, 4
3, 4
SCN-
MotherCNT
MotherCNT
ON for 5VO only
MPFD
Manual feed paper entry
detection
detection
Manual feed paper entry
detection
detection
Paper
presence
–
CN12
29
PCU PWB
MPFS
Manual paper feed take-
up solenoid
up solenoid
Manual paper feed take-
up solenoid control
up solenoid control
Solenoid ON
–
CN12
18
PCU PWB
MPGS
Manual paper feed gate
solenoid
solenoid
Manual paper feed gate
solenoid control
solenoid control
Solenoid ON
–
CN12
20
PCU PWB
MPUC
Manual paper feed
clutch
clutch
Manual paper feed
clutch control
clutch control
Clutch ON
–
CN10
1
PCU PWB
MPWD
Manual paper feed size
detection
detection
Manual paper feed size
detection
detection
–
–
CN12
23
PCU PWB
Analog
n_GINC
PDFS unit setting
PDFS unit setting
–
–
CN14
14
PCU PWB
nBD
LSU synchronization
detection signal (BD
signal)
detection signal (BD
signal)
Detects synchronization
in the main scanning
direction of the LSU.
in the main scanning
direction of the LSU.
Detection
–
CN500
5
LSU-CNT
nGCSgcs
PDFS unit setting
PDFS unit setting
–
–
CN14
12
PCU PWB
nINFO_FAX_LED
FAX notifying LED
signal
signal
Detects that FAX is
receiving or not.
receiving or not.
Light
OFF
CN3
1
SCN-
MotherCNT
MotherCNT
nJOBEND_INT_C
LSU ASIC interruption
LSU ASIC interruption
(C) detection
(C) detection
C
interruption
–
CN25
13
PCU PWB
nJOBEND_INT_K
LSU ASIC interruption
LSU ASIC interruption
(K) detection
(K) detection
K
interruption
–
CN25
14
PCU PWB
nJOBEND_INT_M
LSU ASIC interruption
LSU ASIC interruption
(M) detection
(M) detection
M
interruption
–
CN25
12
PCU PWB
nJOBEND_INT_Y
LSU ASIC interruption
LSU ASIC interruption
(Y) detection
(Y) detection
Y
interruption
–
CN25
11
PCU PWB
nOFF_CNT
+5VL power OFF signal
Turns OFF the +5VL
power.
power.
Power ON
Power OFF
CN1020
1, 4
SCN-
MotherCNT
MotherCNT
nPCU_TRG
LSU communication
LSU communication
(Trigger signal)
(Trigger signal)
–
–
CN25
16
PCU PWB
nPOLY_CK
Polygon motor clock
signal
signal
Controls the speed of
the polygon motor.
the polygon motor.
–
–
CN500
15
LSU-CNT
nPOLY_LOCK
Polygon motor lock
signal
signal
Polygon motor lock
detection
detection
–
Lock
detection
CN500
14
LSU-CNT
Pulse (duty)
drive
drive
nPOLY_START
Polygon motor ON
signal
signal
Drives the polygon
motor of the LSU unit.
motor of the LSU unit.
Drive
Stop
CN500
13
LSU-CNT
nPOW_LED_G
Main power LED signal
Checks that the main
power is supplied or not.
power is supplied or not.
Green ON
Orange ON
CN3
5
SCN-
MotherCNT
MotherCNT
nPWR_SW
Power switch signal
Detects power ON/OFF.
Detection
–
CN3
2
SCN-
MotherCNT
MotherCNT
nRSV_DAT
LSUASIC
communication
communication
LSUASIC
communication
(Receive)
communication
(Receive)
–
–
CN25
8
PCU PWB
nRY_CNT
Main system power OFF
signal
signal
Turns OFF all the
powers except for the
+5VO and the +5VL.
powers except for the
+5VO and the +5VL.
Power ON
Power OFF
CN1020
2, 5
SCN-
MotherCNT
MotherCNT
nTRANS_DAT
LSUASIC
communication
communication
LSUASIC
communication (Send)
communication (Send)
–
–
CN25
5
PCU PWB
nTRANS_RST
LSUASIC
communication
communication
LSUASIC
communication
(Communication reset)
communication
(Communication reset)
–
–
CN25
9
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector
No.
Pin
No.
No.
PWB name
NOTE
L
H
MX-7500N ELECTRICAL SECTION 14 – 39
nWU_KEY
Energy-saving switch
signal
signal
Shifts to the energy-
saving mode.
saving mode.
Detection
–
CN3
8
SCN-
MotherCNT
MotherCNT
nWU_LED
Energy-saving LED
signal
signal
Checks that the
machine is shifted to the
energy-saving mode.
machine is shifted to the
energy-saving mode.
Light
OFF
CN3
7
SCN-
MotherCNT
MotherCNT
Pulse (duty)
drive
drive
OCFAN_ON
CLFM (OC_FAN)
control
control
Controls the CLFM.
–
–
CN1
3
SCN-
MotherCNT
MotherCNT
OCSW Original
cover
SW
[Transmission type]
Detects the original
cover open/close.
(Original size detection
trigger)
cover open/close.
(Original size detection
trigger)
Close
Open
CN5
3
SCN-
MotherCNT
MotherCNT
OZFM1_LD
Ozone fan motor 1 lock
detection
detection
Ozone fan motor 1 lock
detection
detection
Normal
rotation
state
–
CN23
24
PCU PWB
OZFM1_V
Ozone fan motor 1 ON/
OFF
OFF
Ozone fan motor 1 ON/
OFF control
OFF control
–
Fan motor
ON
CN23
18
PCU PWB
OZFM2_LD
Ozone fan motor 2 lock
detection
detection
Ozone fan motor 2 lock
detection
detection
Normal
rotation
state
–
CN23
32
PCU PWB
OZFM2_V
Ozone fan motor 2 ON/
OFF
OFF
Ozone fan motor 2 ON/
OFF control
OFF control
–
Fan motor
ON
CN23
26
PCU PWB
OZFM3_LD
Ozone fan motor 3 lock
detection
detection
Ozone fan motor 3 lock
detection
detection
Normal
rotation
state
–
CN25
26
PCU PWB
OZFM3_V
Ozone fan motor 3 ON/
OFF
OFF
Ozone fan motor 3 ON/
OFF control
OFF control
–
Fan motor
ON
CN25
22
PCU PWB
OZFM_CNT
Ozone fan motor 1
PWM
PWM
Ozone fan motor 1
PWM control
PWM control
–
–
CN23
20
PCU PWB
OZFM_CNT
Ozone fan motor 2
PWM
PWM
Ozone fan motor 2
PWM control
PWM control
–
–
CN23
28
PCU PWB
OZFM_CNT
Ozone fan motor 3
PWM
PWM
Ozone fan motor 3
PWM control
PWM control
–
–
CN25
24
PCU PWB
PAGE_OCACIS
CIS unit communication
CIS unit communication
–
–
CN14
5
PCU PWB
PCS_C
Process control sensor
C
C
Process control sensor
C detection
C detection
–
–
CN16
10
PCU PWB
Analog
PCS_F
Process control sensor
F
F
Process control sensor
F detection
F detection
–
–
CN16
5
PCU PWB
Analog
PCS_R
Process control sensor
R
R
Process control sensor
R detection
R detection
–
–
CN16
15
PCU PWB
Analog
PCSS
Process control shutter
solenoid
solenoid
Process control shutter
solenoid control
solenoid control
Solenoid ON
–
CN16
20
PCU PWB
PCU_REQ
SCU communication
(Send)
(Send)
LSU communication
(Send)
(Send)
–
–
CN25
16
PCU PWB
PCU_TRG
LSU communication
(Send)
(Send)
SCU communication
(Send)
(Send)
–
–
CN22
2
PCU PWB
POD1
Fusing rear detection
Fusing rear detection
Paper
presence
–
CN9
28
PCU PWB
POD2
Main unit paper exit
detection
detection
Main unit paper exit
detection
detection
Paper
presence
–
CN10
7
PCU PWB
POD3
Right paper exit
detection
detection
Right paper exit
detection
detection
Paper
presence
–
CN12
27
PCU PWB
/POF
Power interruption
detection signal
detection signal
Power interruption
detection signal
detection signal
AC power
OFF
–
CN22
8
PCU PWB
POFM_EX_CNT
Paper exit (rear
exhaust) fan PWM
exhaust) fan PWM
Controls the paper exit
(rear exhaust) fan motor
PWM.
(rear exhaust) fan motor
PWM.
–
–
CN10
35
PCU PWB
POFM_EX_LD
Paper exit (rear
exhaust) fan lock
detection
exhaust) fan lock
detection
Detects the paper exit
(rear exhaust) fan motor
lock.
(rear exhaust) fan motor
lock.
Normal
rotation
state
–
CN10
39
PCU PWB
POFM_EX_V
Paper exit (rear
exhaust) fan ON/OFF
exhaust) fan ON/OFF
Controls the paper exit
(rear exhaust) fan motor
ON/OFF.
(rear exhaust) fan motor
ON/OFF.
–
Fan motor
ON
CN10
33
PCU PWB
POFM_F_CNT
Paper exit cooling fan F
PWM
PWM
Paper exit cooling fan
motor F PWM control
motor F PWM control
–
–
CN10
19
PCU PWB
POFM_F_LD
Paper exit cooling fan F
lock detection
lock detection
Paper exit cooling fan
motor F lock detection
motor F lock detection
Normal
rotation
state
–
CN10
23
PCU PWB
POFM_R_CNT
Paper exit cooling fan R
PWM
PWM
Paper exit cooling fan
motor R PWM control
motor R PWM control
–
–
CN10
27
PCU PWB
POFM_R_LD
Paper exit cooling fan R
lock detection
lock detection
Paper exit cooling fan
motor R lock detection
motor R lock detection
Normal
rotation
state
–
CN10
31
PCU PWB
POFM_V
Paper exit cooling fan
ON/OFF
ON/OFF
Paper exit cooling fan
motor ON/OFF control
motor ON/OFF control
–
Fan motor
ON
CN10
17
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector
No.
Pin
No.
No.
PWB name
NOTE
L
H
MX-7500N ELECTRICAL SECTION 14 – 40
PPD1
Registration pre-
detection
detection
Registration pre-
detection
detection
Paper
presence
–
CN13
A-11
PCU PWB
PPD2
Registration detection
Registration detection
Paper
presence
–
CN13
A-8
PCU PWB
PRTPD
Right paper exit tray
paper empty detection
paper empty detection
Right paper exit tray
paper empty detection
paper empty detection
Paper
presence in
the tray
–
CN12
3
PCU PWB
PSFM1_LD
Power supply fan motor
1 lock detection
1 lock detection
Power supply fan motor
1 lock detection
1 lock detection
Motor
normal
rotation
state
–
CN4
4
PCU PWB
PSFM2_LD
Power supply fan motor
2 lock detection
2 lock detection
Power supply fan motor
2 lock detection
2 lock detection
Motor
normal
rotation
state
–
CN4
3
PCU PWB
PSFM_V
Power supply fan ON/
OFF
OFF
Power supply fan motor
1, 2 ON/OFF control
1, 2 ON/OFF control
Fan motor
ON
CN4
1
PCU PWB
RST_OCACIS
CIS unit communication
CIS unit communication
(reset)
(reset)
–
–
CN14
8
PCU PWB
PTC_ERR
PTC error detection
signal
signal
PTC error detection
signal
signal
–
High voltage
error state
CN12
24
PCU PWB
PTCCHPD
PTC cleaner home
position
position
PTC cleaner home
position detection
position detection
–
Home
position
detection
CN16
4
PCU PWB
PTCHP
PTCCM_A
PTC cleaner motor
phase A
phase A
PTC cleaner motor
phase A control
phase A control
–
–
CN13
B-12
PCU PWB
PTCCM_B
PTC cleaner motor
phase B
phase B
PTC cleaner motor
phase B control
phase B control
–
–
CN13
B-11
PCU PWB
PTD
Paper lead edge detec-
tion
tion
Paper lead edge
detection
detection
Dect paper
–
CN13
A-5
PCU PWB
PTRC1
Casette vertical
transport clutch
transport clutch
Casette vertical
transport clutch control
transport clutch control
Clutch ON
–
CN3
B-9
PCU PWB
PTRC2
Vertical transport clutch
upper
upper
Vertical transport upper
clutch control
clutch control
Clutch ON
–
CN15
13
PCU PWB
PWM_RSVFAN
MFP_FAN/HDD_FAN
control
control
Controls the MFP_FAN/
HDD_FAN.
HDD_FAN.
–
–
CN1002/
CN1013
CN1013
2/2
SCN-
MotherCNT
MotherCNT
PWM_SPSFAN
Sub power supply fan
control
control
Controls the sub power
supply fan.
supply fan.
–
–
CN1015
2
SCN-
MotherCNT
MotherCNT
REGS_C
Registration sensor C
Registration sensor C
detection
detection
–
–
CN16
11
PCU PWB
Analog
REGS_C_LED
Registration sensor C
light quantity adjustment
light quantity adjustment
Registration sensor C
light quantity adjustment
light quantity adjustment
–
–
CN16
12
PCU PWB
Analog
REGS_F
Registration sensor F
Registration sensor F
detection
detection
–
–
CN16
6
PCU PWB
Analog
REGS_F_LED
Registration sensor F
light quantity adjustment
light quantity adjustment
Registration sensor F
light quantity adjustment
light quantity adjustment
–
–
CN16
7
PCU PWB
Analog
REGS_R
Registration sensor R
Registration sensor R
detection
detection
–
–
CN16
16
PCU PWB
Analog
REGS_R_LED
Registration sensor R
light quantity adjustment
light quantity adjustment
Registration sensor R
light quantity adjustment
light quantity adjustment
–
–
CN16
17
PCU PWB
Analog
RES_FIN
Finisher communication
Finisher communication
(Reset)
(Reset)
–
–
CN4
15
PCU PWB
RES_FIN_ins
Finisher communication
Finisher communication
(Reset inserter)
(Reset inserter)
–
–
CN4
19
PCU PWB
RES_LCC
LCC communication
LCC communication
(Reset)
(Reset)
–
–
CN4
18
PCU PWB
RES_PCU
ICU communication
ICU communication
(Reset)
(Reset)
–
–
CN22
11
PCU PWB
ROCD
DSPF lower door open/
close detection
close detection
Detects open/close of
the lower door.
the lower door.
Open
Close
CN1
18
DSPFcnt
RSV_DAT
LSU ASIC
communicationn
communicationn
LSU ASIC
communicationn
(Receive)
communicationn
(Receive)
–
–
CN25
8
PCU PWB
RTS_PCU
ICU communication
ICU communication
(Send request)
(Send request)
–
–
CN22
10
PCU PWB
/RxD_FIN
Finisher communication
(Receive)
(Receive)
Finisher communication
(Receive)
(Receive)
–
–
CN4
9
PCU PWB
/RxD_LCC
LCC communication
(Receive)
(Receive)
LCC communication
(Receive)
(Receive)
–
–
CN4
12
PCU PWB
RXD_OCACIS
CIS unit communication
CIS unit communication
(Receive)
(Receive)
–
–
CN14
9
PCU PWB
RxD_PCU
ICU communication
ICU communication
(Send)
(Send)
–
–
CN22
12
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector
No.
Pin
No.
No.
PWB name
NOTE
L
H
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