MX-6240N, MX-7040N (serv.man33). Section 14 Electrical Section - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 34

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MX-7040N  ELECTRICAL SECTION  14 – 34
MPGS
Manual paper feed gate 
solenoid
Manual paper feed gate 
solenoid control
Solenoid ON
–
CN12
20
PCU PWB
MPUC
Manual paper feed 
clutch
Manual paper feed 
clutch control
Clutch ON
–
CN10
1
PCU PWB
MPWD
Manual paper feed size 
detection
Manual paper feed size 
detection
–
–
CN12
23
PCU PWB
Analog
nBD
LSU synchronization 
detection signal (BD 
signal)
Detects synchronization 
in the main scanning 
direction of the LSU.
Detection
–
CN500
5
LSU-CNT
nINFO_FAX_LED
FAX notifying LED 
signal
Detects that FAX is 
receiving or not.
Light
OFF
CN3
1
SCN-
MotherCNT
nJOBEND_INT_C
LSU ASIC interruption
LSU ASIC interruption 
(C) detection
C 
interruption
–
CN25
13
PCU PWB
nJOBEND_INT_K
LSU ASIC interruption
LSU ASIC interruption 
(K) detection
K 
interruption
–
CN25
14
PCU PWB
nJOBEND_INT_M
LSU ASIC interruption
LSU ASIC interruption 
(M) detection
M 
interruption
–
CN25
12
PCU PWB
nJOBEND_INT_Y
LSU ASIC interruption
LSU ASIC interruption 
(Y) detection
Y 
interruption
–
CN25
11
PCU PWB
nOFF_CNT
+5VL power OFF signal
Turns OFF the +5VL 
power.
Power ON
Power OFF
CN1020
1, 4
SCN-
MotherCNT
nPCU_TRG
LSU communication
LSU communication 
(Trigger signal)
–
–
CN25
16
PCU PWB
nPOLY_CK
Polygon motor clock 
signal
Controls the speed of 
the polygon motor.
–
–
CN500
15
LSU-CNT
nPOLY_LOCK
Polygon motor lock 
signal
Polygon motor lock 
detection
–
Lock 
detection
CN500
14
LSU-CNT
Pulse (duty) 
drive
nPOLY_START
Polygon motor ON 
signal
Drives the polygon 
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.
Green ON
Orange ON
CN3
5
SCN-
MotherCNT
nPWR_SW
Power switch signal
Detects power ON/OFF.
Detection
–
CN3
2
SCN-
MotherCNT
nRSV_DAT
LSUASIC 
communication
LSUASIC 
communication 
(Receive)
–
–
CN25
8
PCU PWB
nRY_CNT
Main system power OFF 
signal
Turns OFF all the 
powers except for the 
+5VO and the +5VL.
Power ON
Power OFF
CN1020
2, 5
SCN-
MotherCNT
nTRANS_DAT
LSUASIC 
communication
LSUASIC 
communication (Send)
–
–
CN25
5
PCU PWB
nTRANS_RST
LSUASIC 
communication
LSUASIC 
communication 
(Communication reset)
–
–
CN25
9
PCU PWB
nWU_KEY
Energy-saving switch 
signal
Shifts to the energy-
saving mode.
Detection
–
CN3
8
SCN-
MotherCNT
nWU_LED
Energy-saving LED 
signal
Checks that the 
machine is shifted to the 
energy-saving mode.
Light
OFF
CN3
7
SCN-
MotherCNT
Pulse (duty) 
drive
OCFAN_ON
CLFM (OC_FAN) 
control
Controls the CLFM.
–
–
CN1
3
SCN-
MotherCNT
OCSW Original 
cover 
SW 
[Transmission type]
Detects the original 
cover open/close. 
(Original size detection 
trigger)
Close
Open
CN5
3
SCN-
MotherCNT
OZFM1_LD
Ozone fan motor 1 lock 
detection
Ozone fan motor 1 lock 
detection
Normal 
rotation 
state
–
CN23
24
PCU PWB
OZFM1_V
Ozone fan motor 1 ON/
OFF
Ozone fan motor 1 ON/
OFF control
–
Fan motor 
ON
CN23
18
PCU PWB
OZFM2_LD
Ozone fan motor 2 lock 
detection
Ozone fan motor 2 lock 
detection
Normal 
rotation 
state
–
CN23
32
PCU PWB
OZFM2_V
Ozone fan motor 2 ON/
OFF
Ozone fan motor 2 ON/
OFF control
–
Fan motor 
ON
CN23
26
PCU PWB
OZFM3_LD
Ozone fan motor 3 lock 
detection
Ozone fan motor 3 lock 
detection
Normal 
rotation 
state
–
CN25
26
PCU PWB
OZFM3_V
Ozone fan motor 3 ON/
OFF
Ozone fan motor 3 ON/
OFF control
–
Fan motor 
ON
CN25
22
PCU PWB
OZFM_CNT
Ozone fan motor 1 
PWM
Ozone fan motor 1 
PWM control
–
–
CN23
20
PCU PWB
OZFM_CNT
Ozone fan motor 2 
PWM
Ozone fan motor 2 
PWM control
–
–
CN23
28
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
Display
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