Operation; When The Power Is On - Konica Minolta bizhub C35 Service Manual

DRAFT
Theory of operation Ver. 1.0 Feb. 2010
7.3

Operation

7.3.1

When the power is ON

1. To identify the position of the scanner unit, the scanner unit is moved until the scan-
ner home sensor is activated.
2. When the scanner home sensor is activated, the scanner motor is turned backward
to move the scanner unit to its home position.
3. The scanner unit is moved to check that it is not locked.
4. The scanner unit is moved to the position of the shading correction sheet and the
shading correction position is detected.
5. The scanner unit is moved until the scanner home sensor is activated. At this time,
the distance (motor pulses) between the shading correction position and the scan-
ner home sensor is measured and each of reading positions is calculated with ref-
erence to the scanner home sensor.
6. The scanner unit is moved to the shading position and a shading correction (CCD
gain/offset adjustment) is made.
7. The scanner unit is moved until the scanner home sensor is activated.
8. The scanner unit is moved to the shading position and a shading correction (read-
ing the shading correction sheet data) is made.
9. The scanner unit is moved until the scanner home sensor is activated and then to
the home position (if the ADF is lowered).
10. The scanner unit is moved until the scanner home sensor is activated and is then
brought to a stop at the CCD retracted position (if the ADF is raised).
Scanner home sensor detection position
Home position
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
CCD retracted position
Reading position
Scanner unit operation
7. SCANNER SECTION
Original glass
Shading correction
sheet
Shading
A0VDT2C600AA
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