MX-6500N, MX-7500N (serv.man28). Section 14 Electrical Section - Sharp Copying Equipment Service Manual (repair manual). Page 37

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MX-7500N  ELECTRICAL SECTION  14 – 37
HL_UW
Heater lamp assist
Heater lamp assist 
control
–
Heater lamp 
ON
CN23
35
PCU PWB
HLPCD
Fusing pressure 
detection
Fusing pressure 
detection
Pressed 
state
Released 
state
CN10
8
PCU PWB
HUD_M
Humidity sensor
Humidity sensor 
detection
–
–
CN25
23
PCU PWB
Analog
HV_REM_MC
High voltage remote 
signal (MC/TC)
High voltage remote 
signal (MC/TC)
–
High voltage 
output 
enable
CN23
12
PCU PWB
HV_REM_MC
High voltage remote 
signal (MC/TC)
High voltage remote 
signal (MC/TC)
–
High voltage 
output 
enable
CN23
15
PCU PWB
HV_REM_TC2
High voltage remote 
signal (TC)
High voltage remote 
signal (TC)
–
High voltage 
output 
enable
CN12
28
PCU PWB
JOBEND_INT
LSU ASIC interruption
LSU ASIC interruption 
–
–
CN25
10
PCU PWB
JOBEND_INT_C
LSU ASIC interruption
LSU ASIC interruption 
(C) direction
C 
interruption
–
CN25
13
PCU PWB
JOBEND_INT_K
LSU ASIC interruption
LSU ASIC interruption 
(K) direction
K 
interruption
–
CN25
14
PCU PWB
JOBEND_INT_M
LSU ASIC interruption
LSU ASIC interruption 
(M) direction
M 
interruption
–
CN25
12
PCU PWB
JOBEND_INT_Y
LSU ASIC interruption
LSU ASIC interruption 
(Y) direction
Y 
interruption
–
CN25
11
PCU PWB
LCC_D
LCC/LCT judgment 
detection
LCC/LCT judgment 
detection
–
CN4
8
PCU PWB
LCCC
LCC transport clutch
LCC transport clutch 
control
Clutch ON
–
CN10
2
PCU PWB
LCHM1_CLK
LCC horizontal transport 
motor 1 CLK
LCC horizontal transport 
motor 1 CLK
–
–
CN33
B6
PCU PWB
LCHM1_EN
LCC horizontal transport 
motor 1 ON/OFF
LCC horizontal transport 
motor 1 ON/OFF
–
Motor ON
CN33
B5
PCU PWB
LCHM1_FULL
LCC horizontal transport 
motor 1 phase switch
LCC horizontal transport 
motor 1 phase switch
–
–
CN33
B3
PCU PWB
LCHM1_VREF
LCC horizontal transport 
motor 1 electric current 
switch
LCC horizontal transport 
motor 1 electric current 
switch
–
–
CN33
B4
PCU PWB
LCHM2_CLK
LCC horizontal transport 
motor 2 CLK
LCC horizontal transport 
motor 2 CLK
–
–
CN33
B14
PCU PWB
LCHM2_EN
LCC horizontal transport 
motor 2 ON/OFF
LCC horizontal transport 
motor 2 ON/OFF
–
Motor ON
CN33
B13
PCU PWB
LCHM2_FULL
LCC horizontal transport 
motor 2 phase switch
LCC horizontal transport 
motor 2 phase switch
–
–
CN33
B11
PCU PWB
LCHM2_VREF
LCC horizontal transport 
motor 2 electric current 
switch
LCC horizontal transport 
motor 2 electric current 
switch
–
–
CN33
B12
PCU PWB
LED1
Status light LED 1
Status light LED 1
LED turn on
–
CN28
4
PCU PWB
LED2
Status light LED 2
Status light LED 2
LED turn on
–
CN28
5
PCU PWB
LED3
Status light LED 3
Status light LED 3
LED turn on
–
CN28
6
PCU PWB
LIAM_A
LSU skew correction 
motor A phase
LSU skew correction 
motor A phase
–
–
CN31
15
PCU PWB
LIAM_B
LSU skew correction 
motor B phase
LSU skew correction 
motor B phase
–
–
CN31
14
PCU PWB
LIAM_C_EN
LSU skew correction 
motor C ON/OFF
LSU skew correction 
motor C ON/OFF
Motor ON
–
CN31
10
PCU PWB
LIAM_K_EN
LSU skew correction 
motor K ON/OFF
LSU skew correction 
motor K ON/OFF
Motor ON
–
CN31
11
PCU PWB
LIAM_M_EN
LSU skew correction 
motor M ON/OFF
LSU skew correction 
motor M ON/OFF
Motor ON
–
CN31
9
PCU PWB
LIAM_XA
LSU skew correction 
motor XA phase
LSU skew correction 
motor XA phase
–
–
CN31
13
PCU PWB
LIAM_XB
LSU skew correction 
motor XB phase
LSU skew correction 
motor XB phase
–
–
CN31
12
PCU PWB
LIAM_Y_EN
LSU skew correction 
motor Y ON/OFF
LSU skew correction 
motor Y ON/OFF
Motor ON
–
CN31
8
PCU PWB
LIAMHP_C
LSU skew correction HP 
detection C
LSU skew correction HP 
detection C
Home posi-
tion
–
CN31
3
PCU PWB
LIAMHP_K
LSU skew correction HP 
detection K
LSU skew correction HP 
detection K
Home posi-
tion
–
CN31
4
PCU PWB
LIAMHP_M
LSU skew correction HP 
detection M
LSU skew correction HP 
detection M
Home posi-
tion
–
CN31
2
PCU PWB
LIAMHP_Y
LSU skew correction HP 
detection Y
LSU skew correction HP 
detection Y
Home posi-
tion
–
CN31
1
PCU PWB
Signal name
Name [Type]
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB name
NOTE
L
H
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