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6. OPERATION
6.3.5
CIS control when sub-power switch is turned ON
1. The CIS exposure lamps are turned ON.
2. The cleaning brush is detected at its home position.
3. The cleaning brush is rotated and brought to a stop at the gain adjustment position.
The gain adjustment is made twice with the cleaning brush at that position.
4. After the adjustments, the CIS exposure lamps are turned OFF.
5. The cleaning brush is rotated and brought to a stop at the home position.
* The same control is performed when the main body exits from the sleep mode.
Home position
Cleaning brush
6.3.6
CIS control when the document is loaded
1. The cleaning brush is detected at its home position.
2. The CIS exposure lamps are turned ON.
3. The cleaning brush is rotated four complete turns.
The cleaning brush cleans the CIS glass during its first turn.
The cleaning brush uses the shading correction surface to perform the shading cor-
rection during its second and third turn. The shading correction is performed (a
total of twice).
The cleaning brush uses the shading correction surface to perform "ADF Scan
Glass Contamin. Sensitivity" during its fourth turn.
4. The CIS exposure lamps are turned OFF.
5. The cleaning brush is rotated and brought to a stop at the home position.
NOTE
• No operation is performed when the document is loaded if the following function
is selected using the service mode: [System 2] → [ADF Scan Glass Contamin.
Set.] → [Split Line Detection Setting] → [Back Side] → [ADF Scan Glass Contamin.
Sensitivity] → [Not Set].
18
CIS module (CIS)
WWW.SERVICE-MANUAL.NET
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WWW.SERVICE-MANUAL.NET
WWW.SERVICE-MANUAL.NET
Theory of Operation Ver. 1.0 Jan. 2010
Gain adjustment position
The gain adjustment position is near
the center of the shading correction surface.
A108T2C015DA
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