Read Sharp AL-1043 (serv.man3) Service Manual online
AL-1551 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4-4
5. Sensors and switches
No.
Name
Signal
Type
Function
Output
1
Mirror home position sensor MHPS
Transmission sensor
Mirror (scanner unit) home position
detection
detection
"H" at home position
2
POD sensor
POD
Transmission sensor
Paper exit detection
"H" at paper pass
3
PPD2 sensor
PPD2
Transmission sensor
Paper transport detection 2
"L" at paper pass
4
Cassette detection switch
CED1
Microswitch
Cassette installation detection
"H" at cassette insertion
5
Manual feed detection switch MFD
Transmission sensor
Manual feed paper detection
(single only)
(single only)
"L" at paper detection
6
PPD1 sensor
PPD1
Transmission sensor
Paper transport detection 1
"L" at paper pass
7
Door switch
DSW
Micro switch
Door open/close detection
(safety switch for 5V)
(safety switch for 5V)
1 or 0V of 5V at door open
8
Door switch
DSW
Micro switch
Door open/close detection
(safety switch for 24V)
(safety switch for 24V)
1 or 0V of 24V at door open
9
Drum reset switch
DRST
Micro switch
New drum detection switch
Instantaneously "H" at insertion of new
drum
drum
10
SPF sensor
SPID/
SD SW
SD SW
Transmission sensor
Paper entry detection
Cover open/close detection
Cover open/close detection
"L" at paper pass
11
SPPD sensor
SPPD
Transmission sensor
Paper transport detection
"L" at paper pass
12
SDOD sensor
SDOD
Transmission sensor
SPF open/close detection Book sensor "L" at paper pass
13
2nd cassette
DSW
Micro switch
2nd cassette door open detection
1 or 0V of 5V at door open
14
PPD3 sensor
PPD3
Transmission sensor
Paper transport detection 3
"L" at paper pass
1
2
12
3
4
5
6
7
9
8
10
13
14
11
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