MX-6500N, MX-7500N (serv.man28). Section 14 Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 40

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MX-7500N  ELECTRICAL SECTION  14 – 40
PPD1
Registration pre-
detection
Registration pre-
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
Right paper exit tray 
paper empty detection
Paper 
presence in 
the tray
–
CN12
3
PCU PWB
PSFM1_LD
Power supply fan motor 
1 lock detection
Power supply fan motor 
1 lock detection
Motor 
normal 
rotation 
state
–
CN4
4
PCU PWB
PSFM2_LD
Power supply fan motor 
2 lock detection
Power supply fan motor 
2 lock detection
Motor 
normal 
rotation 
state
–
CN4
3
PCU PWB
PSFM_V
Power supply fan ON/
OFF
Power supply fan motor 
1, 2 ON/OFF control
Fan motor 
ON
CN4
1
PCU PWB
RST_OCACIS
CIS unit communication
CIS unit communication 
(reset)
–
–
CN14
8
PCU PWB
PTC_ERR
PTC error detection 
signal
PTC error detection 
signal
–
High voltage 
error state
CN12
24
PCU PWB
PTCCHPD
PTC cleaner home 
position
PTC cleaner home 
position detection
–
Home 
position 
detection
CN16
4
PCU PWB
PTCHP
PTCCM_A
PTC cleaner motor 
phase A
PTC cleaner motor 
phase A control
–
–
CN13
B-12
PCU PWB
PTCCM_B
PTC cleaner motor 
phase B
PTC cleaner motor 
phase B control
–
–
CN13
B-11
PCU PWB
PTD
Paper lead edge detec-
tion
Paper lead edge 
detection
Dect paper
–
CN13
A-5
PCU PWB
PTRC1
Casette vertical 
transport clutch
Casette vertical 
transport clutch control
Clutch ON
–
CN3
B-9
PCU PWB
PTRC2
Vertical transport clutch 
upper
Vertical transport upper 
clutch control
Clutch ON
–
CN15
13
PCU PWB
PWM_RSVFAN
MFP_FAN/HDD_FAN 
control
Controls the MFP_FAN/
HDD_FAN.
–
–
CN1002/
CN1013
2/2
SCN-
MotherCNT
PWM_SPSFAN
Sub power supply fan 
control
Controls the sub power 
supply fan.
–
–
CN1015
2
SCN-
MotherCNT
REGS_C
Registration sensor C
Registration sensor C 
detection
–
–
CN16
11
PCU PWB
Analog
REGS_C_LED
Registration sensor C 
light quantity adjustment
Registration sensor C 
light quantity adjustment
–
–
CN16
12
PCU PWB
Analog
REGS_F
Registration sensor F
Registration sensor F 
detection
–
–
CN16
6
PCU PWB
Analog
REGS_F_LED
Registration sensor F 
light quantity adjustment
Registration sensor F 
light quantity adjustment
–
–
CN16
7
PCU PWB
Analog
REGS_R
Registration sensor R
Registration sensor R 
detection
–
–
CN16
16
PCU PWB
Analog
REGS_R_LED
Registration sensor R 
light quantity adjustment
Registration sensor R 
light quantity adjustment
–
–
CN16
17
PCU PWB
Analog
RES_FIN
Finisher communication
Finisher communication 
(Reset)
–
–
CN4
15
PCU PWB
RES_FIN_ins
Finisher communication
Finisher communication 
(Reset inserter)
–
–
CN4
19
PCU PWB
RES_LCC
LCC communication
LCC communication 
(Reset)
–
–
CN4
18
PCU PWB
RES_PCU
ICU communication
ICU communication 
(Reset)
–
–
CN22
11
PCU PWB
ROCD
DSPF lower door open/
close detection
Detects open/close of 
the lower door.
Open
Close
CN1
18
DSPFcnt
RSV_DAT
LSU ASIC 
communicationn
LSU ASIC 
communicationn 
(Receive)
–
–
CN25
8
PCU PWB
RTS_PCU
ICU communication
ICU communication 
(Send request)
–
–
CN22
10
PCU PWB
/RxD_FIN
Finisher communication 
(Receive)
Finisher communication 
(Receive)
–
–
CN4
9
PCU PWB
/RxD_LCC
LCC communication 
(Receive)
LCC communication 
(Receive)
–
–
CN4
12
PCU PWB
RXD_OCACIS
CIS unit communication
CIS unit communication 
(Receive)
–
–
CN14
9
PCU PWB
RxD_PCU
ICU communication
ICU communication 
(Send)
–
–
CN22
12
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
Display
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