CHAPTER 5 TROUBLESHOOTING
B. Dcon Check
2. Sensors and Buttons
1. LED/Clutch
Checks the operation of the sensors and
buttons.
Checks the operation of each of the
LEDs and clutches.
When the sensor detects its target, the
corresponding mark lights.
The display screen is divided into “Feed
Unit”, “Front Unit”, and “Panel Unit”. These
are displayed by selecting the corresponding
tabs.
1) Feed unit
Figure 5-225
Pre-registration sensor
Ultrasonic sensor
1) CIS Led
Checks the reading unit LED light. Open
the front unit and press the
corresponding button to light the LED.
Press the button again to turn the LED
off.
Post-registration sensor
Figure 5-226
2) Panel Led
Open the front unit, place the appropriate
paper in the sensor unit, and close the
front unit.
Checks that the panel unit LED lights.
Select [DFR] to light the DFR LED.
Select [Error] to make the power button
and Job No. LEDs flash.
For the ultrasonic sensor, the double
circle mark lights when there are two or
more sheets of paper.
Select the buttons again to return to the
original state.
2) Front unit
3) Clutch
Checks the operation of the clutch by
rotating the feed roller with hand.
Document sensor
When [Clutch] is ON, the clutch activates
and the feed roller will not rotate
backwards. When OFF, the feed roller
rotates in both directions.
Door sensor
Figure 5-227
The door sensor lights when the front
unit is open and the document sensor
lights when the document sensor lever is
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CANON ELECTRONICS INC. 2011 CANON DR-M160 FIRST EDITION
5-17
