MX-6240N, MX-7040N (serv.man33). Section 14 Electrical Section - Updated November 2012 - Sharp Copying Equipment Service Manual (repair manual). Page 37

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MX-7040N  ELECTRICAL SECTION  14 – 37
T2LUD
Casette 2 upper limit 
detection
Casette 2 upper limit 
detection
Upper limit
CN2
10
PCU PWB
T2LUM
Casette 2 lift motor
Casette 2 lift motor 
control
Motor ON
CN15
23
PCU PWB
T2PED
Tandem tray 2 paper 
empty detection
Tandem tray 2 paper 
empty detection
Paper empty
Paper 
presence
CN2
12
PCU PWB
T2PPD1
Tandem tray 2 transport 
detection
Tandem tray 2 transport 
detection
Paper 
presence
–
CN6
11
PCU PWB
T2PUC
Tandem tray 2 paper 
feed clutch
Tandem tray 2 paper 
feed clutch control
Clutch ON
–
CN15
5
PCU PWB
T2PUS
Casette 2 pickup 
solenoid
Casette 2 pickup 
solenoid control
Solenoid ON
–
CN15
19
PCU PWB
T2SPD
Tandem tray 2 paper 
remaining quantity 
detection
Tandem tray 2 paper 
remaining quantity 
detection
–
–
CN2
21
PCU PWB
3-step 
remaining 
quantity 
detection 
according to 
cassette lifting 
(L 
 H  L)
TBFM_LD
Toner bottle fan lock 
detection
Toner bottle fan motor 
lock detection
Normal 
rotation 
state
–
CN12
4
PCU PWB
TBFM_V
Toner bottle fan ON/OFF
Toner bottle fan motor 
ON/OFF control
–
Fan motor 
ON
CN12
2
PCU PWB
/TC1_CLK
Primary transfer high 
voltage serial clock
Primary transfer high 
voltage serial clock 
signal
–
–
CN23
8
PCU PWB
/TC1_DATA
Primary transfer high 
voltage serial data
Primary transfer high 
voltage serial data 
signal
–
–
CN23
6
PCU PWB
/TC1_LD
Primary transfer high 
voltage serial latch
Primary transfer high 
voltage serial latch 
signal
–
–
CN23
10
PCU PWB
/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
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
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