Ricoh MP C6502SP Field Service Manual page 1465

Paper Transport
Paper Transport 001: Curls
Symptom
Thin paper curls inside the machine if the Decurl unit is not installed.
Cause
Thin paper types tend to "shrink" during the fusing process.
Solution
Do the action in the flowcharts below for each model (D137/D138, D135/D136).
D137/D138:
Paper Transport
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