Konica Minolta bizhub C658 Service Manual page 1985

bizhub C658/C558/C458/C368/C308/C258
3.3.3 Document reading front guide
• Open the document reading guide to free documents that are trapped between the document reading roller/1 and the document reading
roll.
• Open the original reading guide to clean the original reading roller/1 and the original reading sensor flock fabric.
• A spring is mounted to the document reading guide, therefore holding it by one hand is required at the time of handling a document. After
you finished handling the document, release the hand holding the guide and return the guide to its normal position.
• No open-close sensor is mounted to the document reading guide.
Scanner side-view drawing
[4]
[3]
[2]
[4]
[1] Document reading guide
[3] Flock fabric
[5] Document reading glass cleaning roller
3.3.4 Document reading glass cleaning mechanism
(1) DF original glass cleaning
• A line can occur in the image read from the original if the DF original glass is contaminated with dust or dirt. The DF original glass
cleaning mechanism prevents this fault from occurring.
• A half face of the document reading glass cleaning roller is provided with the document reading glass cleaning brush. While the original is
being read, the document reading glass cleaning brush faces up. When the DF original glass is to be cleaned, the document reading
glass cleaning roller rotates, so that the document reading glass cleaning brush faces the DF original glass.
• The document reading glass cleaning roller rotates to remove dust sticking to the DF original glass.
• The document reading glass cleaning roller is rotated by the document reading glass cleaning motor. During cleaning, the document
reading glass cleaning roller rotates forward (counterclockwise in the illustration) and, when the job is completed, it rotates backward
(clockwise in the illustration).
• The drive coupling gear is provided with a light blocking plate. As the gear rotates, the document reading glass cleaning sensor is
unblocked and blocked. This detects the document reading glass cleaning brush at its home position. (Unblocked: original reading
position; Blocked: home position)
[1]
[2]
[1]
[5]
[2]
[4]
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PC-11
PC THEORY OF OPERATION DF-704 > 3. OPERATION
Document reading roller/1
Document reading roll
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