Basic Operation - Canon imageRUNNER ADVANCE C350 series Service Manual

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Technical Explanation > Original Exposure and Feed System > Basic Operation > Basic Sequence

Basic Operation

■ Basic Sequence
● Basic Sequence at Power-On
Engine initialization starts
Shift of carriage HP
Main power ON shading
Engine initialization is completed
Shift of carriage HP
The carriage position in the vertical scanning direction is aligned.
The carriage shift behavior differs depending on the initial carriage position.
• When the carriage is on the right side of the CIS HP Sensor (PS01) (at power-on, at
recovery from sleep)
1) The Reader Motor activates and moves the carriage to the left.
2) After the CIS HP Sensor (PS01) is turned ON, the carriage moves the designated
distances and stops.
Related error code:
E202-0001: Scanner Unit HP error
2 Technical Explanation > Original Exposure and Feed System > Basic Operation > Basic Sequence
Power-on
ADF initialization
F-2-7
3) The Reader Motor activates and moves the carriage to the right.
4) After the CIS HP Sensor (PS01) is turned OFF, the carriage moves the designated
distances and stops.
Related error code:
E202-0002: Scanner Unit HP error
• When the carriage is on the left side of the CIS HP Sensor (PS02) (if the power was turned
OFF in the middle of stream reading and then turned back ON, or if the carriage returned to
the standby position after finishing stream reading)
1) Step 3 above is executed.
Main power ON shading
Check operation of the CIS Unit reading function is performed. (Fixed shading is executed)
1) The Reader Motor activates and moves the carriage to the left. (around the center of
the White Plate)
2) The CIS is put in the ON state.
3) The White Plate is read with the LED turned off. (Black shading)
4) The LED turns ON.
5) The White Plate is read with the LED turned on. (White shading)
6) The obtained luminance is checked.
If the luminance is too low, the procedure is repeated from step 1.
If the luminance is still too low even after the second time, E301-0001 is displayed.
7) The CIS is put in the OFF state.
8) The Reader Motor activates and moves the carriage to the right. (Standby position)
ADF initialization
Detection of remaining paper (jam detection), ejection of remaining paper on the downstream
side of the Document End Sensor, and the disengagement mechanism of the Delivery Roller
are initialized in the ADF.
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