MX-6500N, MX-7500N (serv.man28). Section 14 Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 43

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MX-7500N  ELECTRICAL SECTION  14 – 43
/TxD_LCC
LCC communication 
(Send)
LCC communication 
(Send)
CN4
10
PCU PWB
TXD_OCACIS
CIS unit communication
CIS unit communication 
(Send)
CN14
7
PCU PWB
TxD_PCU
ICU communication
ICU communication 
(Receive)
CN22
13
PCU PWB
WEBEND1
Fusing wed end 
detection 1
Fusing wed end 
detection 1
Wed end 
detection
CN9
10
PCU PWB
WEBEND2
Fusing wed end 
detection 2
Fusing wed end 
detection 2
Wed end 
detection
CN9
16
PCU PWB
WH_CNT
Dehumidifier heater 
control signal
Dehumidifier heater 
control signal
Dehumidifier 
heater OFF
Dehumidifier 
heater ON
CN4
23
PCU PWB
WTBSET
Waste toner box 
installation detection
Waste toner box 
installation detection
Waste toner 
box installed
CN6
3
PCU PWB
WTFD
Waste toner full 
detection
Waste toner full 
detection
Waste toner 
full
CN6
5
PCU PWB
WTM_CK
Waste toner motor CLK
Waste toner motor CLK
CN6
24
PCU PWB
WTM_D
Waste toner motor ON/
OFF
Waste toner motor ON/
OFF control
Motor ON
CN6
25
PCU PWB
WTM_LD
Waste toner motor lock 
detection
Waste toner motor lock 
detection
Motor 
normal 
rotation 
state
CN6
22
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
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