4. Replacement and Adjustment
*The tip of the seal is cut at an angle. Its tip faces the front [B].
• When replacing an ADF exposure glass, replace with a new exposure glass seal and a gap
sheet as well.
• ADF Exposure Glass (D137/D138): Same as for D135/D136, except there is no gap sheet.
Modification Procedure for Original Transport
For D135/D136, if you change from contact transport to non-contact transport, it is necessary to
replace parts of the scanner unit and the ADF.
Replacing Parts of the ADF
1. Open the ADF
2. Entrance lower guide unit [A] ( x 2).
• Entrance lower guide unit for non-contact transport: the following areas are black [A].
• Entrance lower guide unit for contact transport (part number: D6833401): the following
areas are clear and colorless [B].
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