MX-6240N, MX-7040N (serv.man33). Section 14 Electrical Section - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 38

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MX-7040N  ELECTRICAL SECTION  14 – 38
TH_UM
Fusing thermistor upper 
main non-contact 
detection
Fusing thermistor upper 
main non-contact 
detection
CN9
7
PCU PWB
Analog
TH_UM_CS
Fusing thermistor upper 
main non-contact 
compensation
Fusing thermistor upper 
main non-contact 
compensation
CN9
9
PCU PWB
Analog
TH_US
Fusing thermistor upper 
sub non-contact 
detection
Fusing thermistor upper 
sub non-contact 
detection
CN9
13
PCU PWB
Analog
TH_US2
Fusing thermistor upper 
sub 2
Fusing thermistor upper 
sub 2
CN9
25
PCU PWB
Analog
TH_US_CS
Fusing thermistor upper 
sub non-contact 
compensation
Fusing thermistor upper 
sub non-contact 
compensation
CN9
15
PCU PWB
Analog
TNDSET
Tandem tray close 
detection
Tandem tray close 
detection
Tray open
Tray close
CN6
8
PCU PWB
TRC_LCC
LCC communication
LCC communication
CN4
22
PCU PWB
TSG_C#
Toner density sensor 
(ATC) gain
Toner density sensor 
(ATC) gain control
CN17
12
PCU PWB
Analog
TSG_K#
Toner density sensor 
(ATC) gain
Toner density sensor 
(ATC) gain control
CN17
5
PCU PWB
Analog
TSG_M#
Toner density sensor 
(ATC) gain
Toner density sensor 
(ATC) gain control
CN17
19
PCU PWB
Analog
TSG_Y#
Toner density sensor 
(ATC) gain
Toner density sensor 
(ATC) gain control
CN17
26
PCU PWB
Analog
TTRC
Tandem transport clutch
Tandem transport clutch 
control
Clutch ON
CN15
9
PCU PWB
/TxD_FIN
Finisher communication 
(Send)
Finisher communication 
(Send)
CN4
7
PCU PWB
/TxD_LCC
LCC communication 
(Send)
LCC communication 
(Send)
CN4
10
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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