MX-6500N, MX-7500N (serv.man28). Section 14 Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 31

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MX-7500N  ELECTRICAL SECTION  14 – 31
4. Signal list
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
1TC_O-ERR
Primary transfer high 
voltage open error
Primary transfer high 
voltage open error 
detection
High voltage 
error state
–
CN23
16
PCU PWB
1TC_S-ERR
Primary transfer high 
voltage short error
Primary transfer high 
voltage short error 
detection
High voltage 
error state
–
CN23
14
PCU PWB
1TUD_CL
Primary transfer 
separation CL detection
Primary transfer 
separation CL detection
–
–
CN23
23
PCU PWB
Judged by 
combination 
with BK.
1TUD_K
Primary transfer 
separation BK detection
Primary transfer 
separation BK detection
–
–
CN13
A-3
PCU PWB
Judged by 
combination 
with CL. 
(1TUD_BK)
1TURC
Primary transfer 
separation clutch
Primary transfer 
separation clutch control
Clutch ON
–
CN13
B-8
PCU PWB
1TURRC
Primary transfer 
separation reverse 
clutch
Primary transfer 
separation reverse 
clutch control
Clutch ON
–
CN13
B-10
PCU PWB
2TBMD_F
Secondary transfer belt 
skew detection F
Secondary transfer belt 
skew detection F
SKEW
–
CN9
3
PCU PWB
2TBMD_HP
Skew correction cam HP 
detection
Skew correction cam 
HP detection
–
–
CN9
10
PCU PWB
2TBMD_R
Secondary transfer belt 
skew detection F
Secondary transfer belt 
skew detection F
SKEW
–
CN9
4
PCU PWB
2TC_ERR
Secondary transfer 
charger error
Secondary transfer 
charger error
–
High voltage 
error state
CN12
26
PCU PWB
2TUM_CK
Secondary transfer 
Motor CLK
Secondary transfer 
Motor CLK
–
–
CN26
3
PCU PWB
2TUM_CW
Secondary transfer 
Motor CW/CCW
Secondary transfer 
Motor CW/CCW
CCW
CW
CN26
5
PCU PWB
2TUM_D
Secondary transfer 
Motor ON/OFF
Secondary transfer 
Motor ON/OFF
Motor ON
–
CN26
4
PCU PWB
2TUM_LD
Secondary transfer 
Motor Lock detection
Secondary transfer 
Motor Lock detection
Normal 
rotation 
state
–
CN26
6
PCU PWB
ADD_OCACIS
CIS unit communication
CIS unit communication
–
–
CN14
6
PCU PWB
ADUFM1_CNT
ADU transport cooling 
fan motor 1 PWM
ADU transport cooling 
fan motor 1 PWM 
control
–
–
CN12
35
PCU PWB
ADUFM1_V
ADU transport cooling 
fan motor 1 ON/OFF
ADU transport cooling 
fan motor 1 ON/OFF 
control
Fan motor 
ON
CN12
31
PCU PWB
ADUFM2_CNT
ADU transport cooling 
fan motor 2 PWM
ADU transport cooling 
fan motor 2 PWM 
control
–
–
CN12
37
PCU PWB
ADUFM2_V
ADU transport cooling 
fan motor 2 ON/OFF
ADU transport cooling 
fan motor 2 ON/OFF 
control
–
Fan  motor 
ON
CN12
33
PCU PWB
/ADUFM_F_CNT
ADU transport cooling 
fan motor F PWM
ADU transport cooling 
fan motor F PWM 
control
–
–
CN12
35
PCU PWB
/ADUFM_R_CNT
ADU transport cooling 
fan motor R PWM
ADU transport cooling 
fan motor R PWM 
control
–
–
CN12
37
PCU PWB
ADUGS
ADU gate solenoid
ADU gate solenoid 
control
Solenoid ON
–
CN12
22
PCU PWB
AK_CS_C1
AKM chip select
AKM chip select
–
Chip select
CN24
11
PCU PWB
AK_CS_C2
AKM chip select
AKM chip select
–
Chip select
CN24
9
PCU PWB
AK_CS_EEP_C1
AKM_EEPROM chip 
select
AKM_EEPROM chip 
select
–
Chip select
CN24
12
PCU PWB
AK_CS_EEP_C2
AKM_EEPROM chip 
select
AKM_EEPROM chip 
select
–
Chip select
CN24
10
PCU PWB
AK_CS_EEP_K1
AKM_EEPROM chip 
select
AKM_EEPROM chip 
select
–
Chip select
CN24
16
PCU PWB
AK_CS_EEP_K2
AKM_EEPROM chip 
select
AKM_EEPROM chip 
select
–
Chip select
CN24
14
PCU PWB
AK_CS_EEP_M1
AKM_EEPROM chip 
select
AKM_EEPROM chip 
select
–
Chip select
CN24
8
PCU PWB
AK_CS_EEP_M2
AKM_EEPROM chip 
select
AKM_EEPROM chip 
select
–
Chip select
CN24
6
PCU PWB
Display
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