Read Sharp AL-2020 (serv.man2) Service Manual online
AL-2040 ELECTRICAL SECTION 12 - 4
3. Signal name list
Signal name
Name
Function/Operation
Section
LEDPPD2
PPD2 sensor power
Fusing section
PPD2
PPD2 sensor
Paper transport detection
Fusing section
RTH_IN
Thermistor
Fusing section thermistor temperature detection
Fusing section
VFMOUT
Fusing fan
Fan drive signal
Optical section
FANLK
Fusing fan
Fan lock detection signal
Optical section
/VFMCNT
Fan speed signal
Fan rotation speed control
Optical section
/DMT_0
DUP motor
DUP motor phase control
Duplex drive section
/DMT_1
DUP motor
DUP motor phase control
Duplex drive section
/DMT_2
DUP motor
DUP motor phase control
Duplex drive section
/DMT_3
DUP motor
DUP motor phase control
Duplex drive section
LEDPOD
POD sensor power
Paper exit section
POD
POD sensor
Paper transport detection
Paper exit section
/SYNC
Laser
Horizontal sync signal from the LSU
LSU
/LDEN
Laser
Laser circuit control signal
LSU
/VIDEO
Laser
Laser drive signal
LSU
SHOLD
Laser
Laser APC signal
LSU
/PMD
Polygon motor
Polygon motor drive signal
LSU
PMRDY
Polygon motor
Polygon motor ON/OFF detection signal
LSU
PMCLK_A
Polygon motor
Clock signal to the polygon motor
LSU
PD1
PD SW sensor
1st CS paper width sensor
Not used
/MMD
Main motor
Polygon motor drive signal
Main drive section
MMLD
Main motor
Polygon motor ON/OFF detection signal
Main drive section
/MMCLK
Main motor
Clock signal to the polygon motor
Main drive section
TMA_O
Toner motor
Toner motor phase control
Toner motor drive section
TMB_O
Toner motor
Toner motor phase control
Toner motor drive section
/RRS
1st transport solenoid
Paper transport section
/CPFS1
1st CS pickup solenoid
Paper transport section
CED1
Machine cassette detection
Paper transport section
LEDPPD1
PPD sensor power
Paper transport section
PPD1
PPD sensor
Paper transport detection
Paper transport section
/MPFS
Multi bypass solenoid
Optical section
KEYIN1#
Key scan input
Key detection control
Operation section
SELIN3
Select signal 3
HC151 select signal
Operation section
STROBE
LED driver control
Operation section
SELIN1
Select signal 1
HC151 select signal
Operation section
OP-CLK
LED driver control
Operation section
SELIN2
Select signal 2
HC151 select signal
Operation section
OP-LATCH
LED driver control
Operation section
OP-DATA
LED driver control
Operation section
PSL
Power save LED
Operation section
ONL
Online LED
Operation section
PSW
Start button control
Operation section
KEYIN2#
Key scan input
Key detection control
Operation section
OUTA+
Scanner motor
Scanner motor phase control
Optical drive section
OUTB+
Scanner motor
Scanner motor phase control
Optical drive section
OUTA-
Scanner motor
Scanner motor phase control
Optical drive section
OUTB-
Scanner motor
Scanner motor phase control
Optical drive section
VCL
Copy lamp
Copy lamp control
Scanner unit section
(VSAMP)
AFE
AFE control signal
Scanner unit section
CCD-TG
CCD
CCD control signal
Scanner unit section
CCD-RS
CCD
CCD control signal
Scanner unit section
(BSAMP)
AFE
AFE control signal
Scanner unit section
CCD-CP
CCD
CCD control signal
Scanner unit section
(AFE_SDI)
AFE
AFE serial data
Scanner unit section
CCD_PHI2
CCD
CCD control signal
Scanner unit section
CCD_PHI1
CCD
CCD control signal
Scanner unit section
(AFE_SEN)
AFE
AFE control signal
Scanner unit section
(ADCLK)
AFE
AFE control signal
Scanner unit section
(AFE_SCK)
AFE
AFE control signal
Scanner unit section
(AFE_DB7)
AFE
Image scan data
Scanner unit section
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