AL-2041 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 5
6. Sensors and switches
No. Name Signal Type Function / Operation Output
1 Scanner unit home
position sensor
MHPS Transmission sensor Scanner unit home position
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 Micro-switch Cassette installation detection "H" at cassette insertion
5 PPD1 sensor PPD1 Transmission sensor Paper transport detection 1 "L" at paper pass
6 Door switch DSW Micro-switch Door open/close detection
(safety switch for 24V)
0V at door open
7 Drum reset switch DRST Micro-switch New drum detection switch Instantaneously "H" at insertion
of new drum
8 SPF sensor SPID/
SD SW
Transmission sensor Paper entry detection
Cover open/close detection
"L" at paper pass (AL-2031/2041)
9 SPPD sensor SPPD Transmission sensor Paper transport detection "L" at paper pass (AL-2031/2041)
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