Solution:
1. If the Buffer Pass Unit is attached, go to the next step.
If not, go to Step 5.
2. Check to see if the stain is located at an area between 33 mm (1.3 inches) and 14 mm (0.6
inches) from the center of the paper.
Yes Go to the next step.
No Proceed to Step 5.
3. Fan the paper and clean the paper edges. (See page 201 "Clean the Paper Edges") Or
clean the pipe cooling unit's transfer roller and guide plates. (See page 292 "Cleaning the
Buffer Pass Unit")
4. Print the image. Has the problem been resolved?
Yes Finished!
No Go to the next step.
5. Check whether the stains on the paper edges occurred during duplex printing or single-
sided printing.
Duplex printing Go to the next step.
Single-sided printing Proceed to Step 8.
6. Check if the stains are located in the area 25 mm (1 inches), 68 mm (2.7 inches), 113 mm
(4.4 inches), or 146 mm (5.7 inches) away from the center in the paper feed direction.
Yes Go to the next step.
No Proceed to Step 8.
7. Clean the ribs of the duplex guide plate. (See page 217 "Cleaning the Turned-Over
Delivery Unit")
If the problem persists even after the cleaning, it may be caused by the paper, so use different
paper or print on paper that assumes that its edges will be cut.
Adjust the line speed for decurling
1. If the paper is not registered as custom paper, register the brand of the paper.
8. Troubles Related to Paper Feeding and Delivery (Main)
236
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