MX-M950, MX-MM1100 (serv.man42). Section 11 Electrical - Sharp Copying Equipment Service Manual (repair manual). Page 14

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MX-M1100  ELECTRICAL SECTION  11 – 14
PCU_STATE1
MFPC 
→ PCU status signal 
Status from MFPC
11
20
PCU
Not 
used
PCU_STATE2
PCU 
→ MFPC status signal 
Status to MFPC
11
22
PCU
Not 
used
PCU_TXD_MON
Serial communication receive 
data signal monitor
Receive data from the 
controller
22
5
PCU
PCU_TXD_N
Serial communication receive 
data signal  
Receive data from the 
controller
11
7
PCU
PCU_TXD_P
Serial communication receive 
data signal
Receive data from the 
controller
11
5
PCU
PD_VCC_SW
Document size sensor (1) (2) (4)
Sensor power control
ON
OFF
CN9
60
SCNCNT 
PWB
PD_VCC_SW
Document size sensor (1) (2) (4)
Sensor power control
ON
OFF
CN7
60
SCN-
Mother 
PWB
PHPS
Procon home position detection 
signal
Procon home position detection
9
26
PCU
Not 
used
POD
Paper exit detection signal
Paper exit detection
Paper pass
6
5
PCU
POF
Power OFF status signal
Power OFF status 
Power OFF
Power ON
11
12
PCU
POFD
Paper exit tray paper full 
detection signal
Paper exit tray paper full 
detection
6
35
PCU
Not 
used
POIND
Paper exit section paper entry 
detection signal 
Paper exit section paper entry 
detection 
Paper pass
6
32
PCU
POW_LED_G
Power LED green
Displays the DC power ON 
status.
OFF
ON
CN2
27
POW_LED_R
Power LED orange
Displays the DC power OFF 
status.
OFF
ON
CN2
26
MFP 
OPE
PPD1
Resist roller front paper pass 
detection 1 signal
Paper pass detection in the 
vertical transport roller 3 rear
Paper pass
13
17
PCU
PPD2
Resist roller front paper pass 
detection 2 signal
Paper pass detection in front of 
the resist front roller
Pass
19
27
PCU
PPD3
Resist roller front paper pass 
detection 3 signal
Paper pass detection at the 
back of the resist front roller
Pass
19
25
PCU
PPD4
Resist roller front paper pass 
detection 4 signal
Paper pass detection in front of 
the resist roller
Pass
19
23
PCU
PRTH
Lower heat roller temperature 
detection signal 
Lower heat roller temperature 
detection (Center section)
1
14
PCU
RES
SCNCNT
DSPF reset
Normal
Reset
CN5
38
DSPFcnt 
PWB
RES
DSPFcnt
DSPF reset
Normal
Reset
CN7
38
SCNCNT 
PWB
RES_CIS
PED CIS PWB ASIC hard reset 
signal 
Hard reset signal
Reset
19
17
PCU
RES_FIN
Finisher reset signal
Finisher reset
13
31
PCU
RES_LCC
LCC reset signal
The machine resets the large 
capacity LCC.
Operation 
Enable
Reset
12
13
PCU
RES_OPE
Reset signal
Operation panel Reset/Reset 
Cancel control
Cancel
Reset
CN2
24
MFP 
OPE
RSV_DAT
Serial communication receive 
data signal 
Receive data from the LSU 
PWB
5
15
PCU
RTH1
Heat roller temperature detection 
signal
Heat roller temperature 
detection (Center section)
4
11
PCU
RTH1_com
Heat roller temperature detection 
signal (non-contact, 
compensation side)
Heat roller temperature 
detection [Center section]  
(non-contact, compensation 
side)
4
17
PCU
RTH1_d
Heat roller temperature detection 
signal (non-contact, detection 
side)
Heat roller temperature 
detection [Center section]  
(non-contact, detection side)
4
15
PCU
RTH2
Pressure roller temperature 
detection signal
Pressure roller temperature 
detection (both ends)
4
7
PCU
RXD_CIS
Serial communication receive 
data signal
Receive data to the PED CIS 
PWB
19
15
PCU
RXD_DBG
Serial communication send data 
signal for debug
Serial communication send 
data for debug
24
4
PCU
RXD_FIN
Serial I/F data (Finisher)
Serial I/F data (Finisher - PCU 
PWB)
13
29
PCU
RXD_LCC
Serial communication receive 
data signal [LCC]
Serial receive data (LCC 
→ 
PCU)
12
7
PCU
SCAN
Key matrix signal
Detects the key in the matrix 
which was pressed with the 
input signal and the output 
signal. 
CN3
7,  8, 
10, 
12
MFP 
OPE
Signal name
Name
Function/Operation
Connector level
Connector 
No.
Pin 
No.
PWB 
name
Re
mark
L
H
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