MX-6500N, MX-7500N (serv.man28). Section 14 Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 35

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MX-7500N  ELECTRICAL SECTION  14 – 35
DM_C_LD
Drum motor lock 
detection (C)
Drum motor lock 
detection (C)
Normal 
rotation 
state
–
CN21
17
PCU PWB
DM_CW/CCW
Drum motor CW/CCW 
(K)
Drum motor CW/CCW 
(K) control
CCW
CW
CN18
5
PCU PWB
DM_CW/CCW
Drum motor CW/CCW 
(C)
Drum motor CW/CCW 
(C) control
CCW
CW
CN22
16
PCU PWB
DM_CW/CCW
Drum motor CW/CCW 
(M)
Drum motor CW/CCW 
(M) control
CCW
CW
CN28
5
PCU PWB
DM_CW/CCW
Drum motor CW/CCW 
(Y)
Drum motor CW/CCW 
(Y) control
CCW
CW
CN20
5
PCU PWB
DM_K_CK
Drum motor CLK (K)
Drum motor CLK (K) 
signal
–
–
CN18
3
PCU PWB
DM_K_D
Drum motor ON/OFF (K)
Drum motor ON/OFF 
(K) control
Motor ON
–
CN18
4
PCU PWB
DM_K_LD
Drum motor lock 
detection (K)
Drum motor lock 
detection (K)
Normal 
rotation 
state
–
CN18
6
PCU PWB
DM_M_CK
Drum motor CLK (M)
Drum motor CLK (M) 
signal
–
–
CN30
3
PCU PWB
DM_M_D
Drum motor ON/OFF 
(M)
Drum motor ON/OFF 
(M) control
Motor ON
–
CN29
4
PCU PWB
DM_M_LD
Drum motor lock 
detection (M)
Drum motor lock 
detection (M)
Normal 
rotation 
state
–
CN27
6
PCU PWB
DM_Y_CK
Drum motor CLK (Y)
Drum motor CLK (Y) 
signal
–
–
CN20
3
PCU PWB
DM_Y_D
Drum motor ON/OFF (Y)
Drum motor ON/OFF 
(Y) control
Motor ON
–
CN20
4
PCU PWB
DM_Y_LD
Drum motor lock 
detection (Y)
Drum motor lock 
detection (Y)
Normal 
rotation 
state
–
CN20
6
PCU PWB
DPF
Double feed detection
Double feed detection
–
Double feed
CN14
15
DPFAin
PDFS analog output
PDFS analog output
–
–
CN14
20
DPFCK
PDFS unit setting
PDFS unit setting
–
–
CN14
17
DSR_FIN
Finisher communication
Finisher communication 
(Receive enable)
–
–
CN4
13
PCU PWB
/DSR_LCC
LCC communication
LCC communication 
(Receive enable)
–
–
CN4
16
PCU PWB
DSW_CS
Transport cover open/
close detection
Transport cover open/
close detection
Door open
Door close
CN6
20
PCU PWB
DSW_F
Front door open/close 
detection
Front door open/close 
detection
Door open
Door close
CN11
1
PCU PWB
DSW_FU
Door switch detection 
(Front upper door)
Door switch detection 
(Front upper door)
Door open
Door close
CN10
14
PCU PWB
DSW_F
DSW_R
Right door open/close 
detection
Right door open/close 
detection
Door open
Door close
CN11
4
PCU PWB
DSW_RL
Door switch detection 
(Right lower door)
Door switch detection 
(Right lower door)
Door open
Door close
CN6
17
PCU PWB
DTR_FIN
Finisher communication
Finisher communication 
(Send enable)
–
–
CN4
11
PCU PWB
DTR_LCC
LCC communication
LCC communication 
(Send enable)
–
–
CN4
14
PCU PWB
DVC_C
DV clutch (C)
DV clutch (C) control
Clutch ON
–
CN20
18
PCU PWB
DVC_K
DV clutch (K)
DV clutch (K) control
Clutch ON
–
CN18
7
PCU PWB
DVC_M
DV clutch (M)
DV clutch (M) control
Clutch ON
–
CN26
7
PCU PWB
DVC_Y
DV clutch (Y)
DV clutch (Y) control
Clutch ON
–
CN20
7
PCU PWB
DVTYP_C
Development 
identification detection C
Development 
identification detection 
C
–
–
CN17
11
PCU PWB
Analog
DVTYP_K
Development 
identification detection 
BK
Development 
identification detection 
BK
–
–
CN17
4
PCU PWB
Analog
DVTYP_M
Development 
identification detection 
M
Development 
identification detection 
M
–
–
CN17
18
PCU PWB
Analog
DVTYP_Y
Development 
identification detection Y
Development 
identification detection Y
–
–
CN17
25
PCU PWB
Analog
DVTYPSEL_C
Development 
identification detection C 
(digital)
Development 
identification detection 
C (digital)
–
–
CN17
9
PCU PWB
DVTYPSEL_K
Development 
identification detection K 
(digital)
Development 
identification detection K 
(digital)
–
–
CN17
2
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
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H
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