Canon FAX L1000 Service Manual page 171

b) Sensor layout
b-1) Contact sensor
This contact sensor (CS) horizontally scans documents up to Letter size 8.42" (214mm)
(B4 size 10.00" (254 mm) for AE) at a horizontal scanning resolution of 8 dots/mm.
b-2) Document sensor (DS)
This sensor, which detects the presence/absence of a document, is attached to the ADF
section (Upper reader frame unit) sensor board.
b-3) Document width sensor (DWS) (AE only)
This sensor, which detects the width of the document, is attached to the ADF section
(Upper reader frame unit) sensor board.
b-4) Document feed sensor (DFS)
This sensor, which detects the feed condition of the document, is attached to the ADF
section (Upper reader frame unit) sensor board.
b-5) Document edge sensor (DES)
This sensor, which detects the lead and rear edges of a document when it is passing
through the ADF, is attached to the ADF section (Base reader frame unit).
b-6) Cam sensor
This sensor, which detects the condition of the cam in the ADF section, is attached to the
ADF section(Upper reader frame unit).
b-7) Panel sensor (A / B / C)
These sensors detect whether the one-touch speed dialing panels are open or closed, and
are located on the OPCNT board.
b-8) Multi-purpose tray paper sensor
This sensor, which detects the presence/absence of recording paper in the multi-purpose
tray, is attached to the multi-purpose pick-up assembly.
b-9) Cassette recording paper sensor
This sensor, which detects the presence/absence of recording paper in the cassette, is
attached to the paper feed section.
b-10) Pre-feed sensor
This sensor, which detects the feed condition of the recording paper, is attached to the
paper feed section.
b-11) Top of page sensor
This sensor, which detects the rear edge of the recording paper when it passes through the
inside of the main unit, is attached to the paper feed section.
FAX-L1000 Chapter 3: Technical Reference
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