Sharp AL-2020 (serv.man2) Service Manual ▷ View 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
AL-2040 ELECTRICAL SECTION 12 - 5
MHPS
MHPS sensor
Carriage HP detection
Optical section
(AFE_DB5)
AFE
Image scan data
Scanner unit section
(AFE_DB6)
AFE
Image scan data
Scanner unit section
(AFE_DB4)
AFE
Image scan data
Scanner unit section
(AFE_DB3)
AFE
Image scan data
Scanner unit section
(AFE_DB2)
AFE
Image scan data
Scanner unit section
(AFE_DB1)
AFE
Image scan data
Scanner unit section
(AFE_DB0)
AFE
Image scan data
Scanner unit section
TCS
Toner sensor
Toner quantity detection
Developing section
DVSEL
Developing tank detection
Developing section
/BIAS
HV bias signal
HV bias drive
Process section
/TC
HV TC signal
Transfer charger grid control
Process section
/GRIDL
HV grid signal
Main charger grid control
Process section
/MC
HV MC signal
Main charger control
Process section
/POFF
Low voltage power
Output power control
Power section
FW
Low voltage power
Zero cross detection
Power section
/PR
Heater lamp
Power relay control
Power section
HLOUT
Heater lamp
Heater lamp control
Power section
SPMT_0
SPF motor
SPF motor phase control
SPF section
SPMT_2
SPF motor
SPF motor phase control
SPF section
SPMT_1
SPF motor
SPF motor phase control
SPF section
SPMT_3
SPF motor
SPF motor phase control
SPF section
SPID
SPID sensor
SPF UN paper entry sensor
SPF section
LEDSPID
SPID sensor power
SPF section
SPPD
SPPD sensor
SPF transport detection
SPF section
LEDSPPD
SPPD sensor power
SPF section
/CPFS2
2nd CS pickup solenoid
2nd cassette section
PPD3
PPD3 sensor
2nd CS paper transport detection
2nd cassette section
PD2
PD2 SW sensor
2nd CS paper width detection
2nd cassette section
CED2
2nd CS cassette detection
2nd cassette section
/REV
IEEE1284
/REV signal
Network section
/INIT
IEEE1284
/INIT signal
Network section
/SLCTIN
IEEE1284
/SLCTIN signal
Network section
/AUTOFD
IEEE1284
/AUTOFD signal
Network section
/STB
IEEE1284
/STB signal
Network section
/FAULT
IEEE1284
/FAULT signal
Network section
SLCT
IEEE1284
SLCT signal
Network section
PE
IEEE1284
PE signal
Network section
BUSY
IEEE1284
BUSY signal
Network section
/ACK
IEEE1284
/ACK signal
Network section
PARAD7
IEEE1284
Data bus
Network section
PARAD6
IEEE1284
Data bus
Network section
PARAD5
IEEE1284
Data bus
Network section
PARAD4
IEEE1284
Data bus
Network section
PARAD3
IEEE1284
Data bus
Network section
PARAD2
IEEE1284
Data bus
Network section
PARAD1
IEEE1284
Data bus
Network section
PARAD0
IEEE1284
Data bus
Network section
/OA_RST
Option reset
Reset signal to the NIC PWB
Network section
Signal name
Name
Function/Operation
Section
Memo
Memo
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