MX-6500N, MX-7500N (serv.man28). Section 14 Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 42

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MX-7500N  ELECTRICAL SECTION  14 – 42
/TC2_CLK
Secondary transfer high 
voltage serial clock
Secondary transfer high 
voltage serial clock 
signal
–
–
CN12
32
PCU PWB
/TC2_DATA
Secondary transfer high 
voltage serial data
Secondary transfer high 
voltage serial data 
signal
–
–
CN12
34
PCU PWB
/TC2_LD
Secondary transfer high 
voltage serial latch
Secondary transfer high 
voltage serial latch 
signal
–
–
CN12
30
PCU PWB
TCS_C
Toner concentration 
sensor C
Toner concentration 
sensor C detection
–
–
CN17
14
PCU PWB
Analog
TCS_K
Toner concentration 
sensor BK
Toner concentration 
sensor BK detection
–
–
CN17
7
PCU PWB
Analog
TCS_M
Toner concentration 
sensor M
Toner concentration 
sensor M detection
–
–
CN17
21
PCU PWB
Analog
TCS_Y
Toner concentration 
sensor Y
Toner concentration 
sensor Y detection
–
–
CN17
28
PCU PWB
Analog
TFD2
Main unit paper exit tray 
full detection
Main unit paper exit tray 
full detection
–
Full state
CN10
13
PCU PWB
TFSD_C
Toner remaining 
quantity detection (C)
Toner remaining 
quantity detection (C)
Toner empty 
state
–
CN21
22
PCU PWB
TFSD_K
Toner remaining 
quantity detection (K)
Toner remaining 
quantity detection (K)
Toner empty 
state
–
CN21
19
PCU PWB
TFSD_M
Toner remaining 
quantity detection (M)
Toner remaining 
quantity detection (M)
Toner empty 
state
–
CN21
25
PCU PWB
TFSD_Y
Toner remaining 
quantity detection (Y)
Toner remaining 
quantity detection (Y)
Toner empty 
state
–
CN21
28
PCU PWB
TH1_LSU
LSU thermistor 1
LSU thermistor 1 
detection
–
–
CN25
15
PCU PWB
Analog
TH2_LSU
LSU thermistor 2
LSU thermistor 2 
detection
–
–
CN25
17
PCU PWB
Analog
TH_LM
Fusing thermistor lower 
main non-contact 
detection
Fusing thermistor lower 
main non-contact 
detection
–
–
CN9
19
PCU PWB
Analog
TH_LM2
Fusing thermistor lower 
main 2
Fusing thermistor lower 
main 2
–
–
CN9
29
PCU PWB
Analog
TH_LM_CS
Fusing thermistor lower 
main non-contact 
compensation
Fusing thermistor lower 
main non-contact 
compensation
–
–
CN9
21
PCU PWB
Analog
TH_M
Temperature sensor
Temperature detection
–
–
CN25
27
PCU PWB
Analog
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
TRANS_DAT
LSUASIC 
communication
LSUASIC 
communication (Send)
–
–
CN25
5
PCU PWB
TRANS_RST
LSUASIC 
communication
LSUASIC 
communication (Send)
–
–
CN25
9
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
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
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