Sharp MX-M550U Service Manual page 233

Signal name Name
STLD DSPF document tray lower
limit detection signal
STMPS Stamp solenoid control signal
STRBC DSPF paper transport clutch
control signal
STRC DSPF paper transport clutch
control signal
STRRBC DSPF paper transport resist
brake clutch control signal
STRRC DSPF paper transport resist
clutch control signal
STSET Stamp identification signal
STUD DSPF document tray upper
limit detection signal
SYNC LSU horizontal sync detection
signal
T1LUD Paper feed tray upper limit
detection signal
(Paper feed tray 1)
T1LUM Paper tray lift-up motor control
signal (Paper feed tray 1)
T1PED Paper empty detection signal
(Paper feed tray 1)
T1PFC Paper feed clutch control
signal (Paper feed tray 1)
T1PPD Paper pass detection signal
(Paper feed tray 1)
T1PUS Paper pick-up solenoid control
signal (Paper feed tray 1)
T1SPD Paper remaining quantity
detection signal
(Paper feed tray 1)
T2LUD Paper tray upper limit
detection signal
(Paper feed tray 2)
T2LUM Paper tray lift-up motor control
signal (Paper feed tray 2)
T2PED Paper empty detection signal
(Paper feed tray 2)
T2PFC Paper clutch control signal
(Paper feed tray 2)
T2PUS Paper pickup solenoid control
signal (Paper feed tray 2)
T2SPD Paper remaining quantity
detection signal
(Paper feed tray 2)
TANSET Paper feed tray 1/2
(Tandem tray) detection signal
TCBIAS Transfer belt cleaning output
control signal (ON/OFF)
TCBPWM Transfer belt cleaning output
control signal (PWM)
TCS Toner density detection signal
TFSD Toner remaining quantity
detection signal
TH LCD temperature sensor
signal
TH-CL OPC drum cleaner
temperature sensor signal
TH-DV Developing humidity detection
signal
TH-EX Paper exit unit temperature
sensor
THPS1 Transfer belt contact/
separation home position
sensor 1
THPS2 Transfer belt contact/
separation home position
sensor 2
Function/Operation
DSPF document tray lower limit
detection
Stamp solenoid control
DSPF paper transport roller brake
clutch control
DSPF paper transport clutch
control
DSPF paper transport resist brake
clutch control
DSPF paper transport resist clutch
control
Stamp Yes/No detection
DSPF document tray upper limit
detection
LSU horizontal sync detection
(BD sensor signal)
Paper feed tray upper limit
(Paper feed tray 1)
Paper tray lift-up control
(Paper feed tray 1)
Paper presence detection
(Paper feed tray 1)
Paper feed clutch control
(Paper feed tray 1)
Paper pass detection from paper
feed tray 1
Paper pickup solenoid control
(Paper feed tray 1)
Paper remaining quantity detection
(Paper feed tray 1)
Paper tray upper limit detection
(Paper feed tray 2)
Paper tray lift-up motor control
(Paper feed tray 2)
Paper presence detection
(Paper feed tray 2)
Paper feed clutch control
(Paper feed tray 2)
Paper pickup solenoid control
(Paper feed tray 2)
Paper remaining quantity detection
(Paper feed tray 2)
Paper feed tray 1, 2
(Tandem tray) insertion detection
Transfer belt cleaning bias ON/
OFF control
Transfer belt cleaning bias output
voltage PWM control
Toner density detection
Toner hopper remaining quantity
detection
LCD temperature detection
OPC drum cleaner peripheral
temperature detection
Developing section humidity
detection
Paper exit unit peripheral
temperature detection
Transfer belt separation home
position detection 1
Transfer belt separation home
position detection 2
MX-M700N ELECTRICAL SECTION 11 – 25
Connector level Connector
"L" "H"
Lower limit
Stamp ON
ON
ON
ON
ON
Stamp
available
Upper limit
— —
Upper limit —
Stop Up
Paper Paper
empty present
Paper —
transport
Paper pass —
Roller UP Paper feed
— Remaining
paper
quantity
66% or less
Upper limit —
Stop Up
Paper Paper
empty present
Paper —
transport
The roller Paper feed
lifts up.
— Remaining
paper
quantity
66% or less
Pull out Insert
ON OFF
— —
— —
Remaining Remaining
quantity quantity
large small
— —
— —
— —
— —
— Contact
— Contact
Pin PWB
Remark
No. No. name
11 15 SCN
1 48 SCN
11 9 SCN
11 8 SCN
12 20 SCN
12 19 SCN
1 47 SCN
12 14 SCN
22 29 PCU
14 13 PCU
14 1 PCU
14 15 PCU
17 4 PCU
25 3 PCU
14 7 PCU
14 16 PCU
14 21 PCU
14 2 PCU
14 23 PCU
12 3 PCU
14 8 PCU
14 22 PCU
17 25 PCU
7 22 PCU
7 18 PCU
12 16 PCU
11 11 PCU
1 93 SCN
8 12 PCU
12 30 PCU
5 31 PCU
7 6 PCU Not used.
7 14 PCU