AR-M550 (serv.man21). (14) Signal name list - Sharp Copying Equipment Service Manual (repair manual). Page 10

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AR-M550/M620  SIGNAL NAME LIST  14 - 10
THPS1
Transfer belt contact/
separation home position 
sensor 1
Transfer belt separation home 
position detection 1
Contact
7
6
PCU
Not used.
THPS2
Transfer belt contact/
separation home position 
sensor 2
Transfer belt separation home 
position detection 2
Contact
7
14
PCU
TH-RA
Machine temperature detection 
signal
Machine temperature detection
21
10
PCU
THV+PWM
Transfer charger output control 
signal (THV)
Transfer charger output control 
(PWM control)
15
8
PCU
THV+REM
Transfer charger control signal 
(THV)
Transfer charger ON/OFF 
control
ON
OFF
15
9
PCU
TLS
Waste toner pipe lock detection 
signal
Waste toner pipe lock detection
Lock (Tilt)
8
16
PCU
TM1A
Toner motor 1 control signal
Toner motor 1 ON/OFF control
11
1
PCU
TM1B
Toner motor 1 control signal
Toner motor 1 ON/OFF control
11
3
PCU
TM2A
Toner motor 2 control signal
Toner motor 2 ON/OFF control
11
5
PCU
TM2B
Toner motor 2 control signal
Toner motor 2 ON/OFF control
11
7
PCU
TNCA
Waste toner full detection 
signal
Waste toner full detection
11
12
PCU
Not used.
TRC_LCC
LCC paper feed timing signal
LCC paper feed timing control 
(Output from PCU)
18
13
PCU
TRMA
Transfer roller 15 drive motor 
control signal (Phase A)
Transport roller 15 drive motor 
control
10
17
PCU
TRMB
Transfer roller 15 drive motor 
control signal (Phase B)
Transport roller 15 drive motor 
control
10
19
PCU
TRMXA
Transfer roller 15 drive motor 
control signal (Phase /A)
Transport roller 15 drive motor 
control
10
18
PCU
TRMXB
Transfer roller 15 drive motor 
control signal (Phase /B)
Transport roller 15 drive motor 
control
10
20
PCU
TSGOUT
Toner den misty sensor gain 
control signal
Toner density sensor gain 
control
12
20
PCU
TURM
Transfer separation motor 
control signal
Transfer unit separation control
Stop
Contact/
Release
7
16
PCU
TXD_CCD1
Serial I/F data (CCD)
Serial I/F data (Scanner control 
PWB - CCD)
1
63
SCN
TXD_CCD2
Serial I/F data (CCD)
Serial I/F data (Scanner control 
PWB - CCD)
10
14
SCN
TXD_FIN
Serial I/F data (Finisher)
Serial I/F data (PCU PWB - 
Finisher)
17
11
PCU
TXD_LCC
Serial I/F data (LCC)
aerial I/F data (Controller - 
Scanner control PWB)
18
3
PCU
TXD_SCN
Serial I/F data (Scanner control 
PWB)
Serial I/F data (Controller - 
Scanner control PWB)
9
8
SCN
VCCW_SCN Scanner flash ROM write 
protect signal
Scanner flash ROM write 
protect
Write 
enable
9
10
SCN
VFM-BKL
Exhaust fan motor control 
signal (Rear left)
Exhaust fan motor control 
signal (O
3
 exhaust, process 
section heat exhaust)
Max. force 
of wind
Stop
5
22
PCU
VFM-BKR
Exhaust fan motor control 
signal (Rear right)
Exhaust fan motor control 
signal (Exhaust, duplex (ADU) 
section cooling)
Max. force 
of wind
Stop
6
17
PCU
VFM-EX1
Exhaust fan motor control 
signal (LSU top plate front 
side)
Exhaust fan motor control 
signal (O
3
 exhaust, process 
section heat exhaust)
Max. force 
of wind
Stop
5
4
PCU
VFM-EX2
Exhaust fan motor control 
signal (LSU top plate center)
Exhaust fan motor control 
signal (O
3
 exhaust, process 
section heat exhaust)
Max. force 
of wind
Stop
5
10
PCU
VFM-EX3
Exhaust fan motor control 
signal (LSU top plate rear side)
Exhaust fan motor control 
signal (O
3
 exhaust, process 
section heat exhaust)
Max. force 
of wind
Stop
5
16
PCU
VIDEO
Image signal
Image signal to LSU
20
21
PCU
VIDEOin-
Image signal
Image signal from controller to 
PCU PWB
9
21
PCU
Signal name
Name
Function/Operation
Connector level
Connector 
No.
Pin No.
PWB 
name
Remark
"L"
"H"
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