COPYRIGHT © 1999 CANON INC.
CANON ADF FOR iR600 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
2-15
CHAPTER 2 OPERATIONS
Figure 2-209
2.
Detecting the Presence/Absence of an Original
The presence/absence of an original on the original tray is detected by the original sensor (S6).
When an original is placed on the original tray, the light from the light-emitting side of the origi-
nal sensor will be blocked, causing the light-receiving side of the sensor to send the original detection
signal (DTS) to the ADF controller PCB. In response, the ADF controller PCB turns on the Original
Set indicator.
ADF controller PCB
S6
(light-receiving side)
S6 (light-receiving side)
ADF controller PCB
If an original is detected,
If an original is not detected,
ADF controller PCB
DTS signal
Blocks
the light.
DTS signal
Original
S6
(light-emitting side)
S6
(light-emitting side)
S6
(light-emitting side)
S6 (light-receiving side)