Sekonic SR-1800 Operating Manual page 39

SR-1800
(4) Reattach the top cover.
Close the top cover securely. Otherwise, it may cause poor sheet feeding.
(5) If the ERROR lamp (red) is on, check (3) and (4) again.
(6) The following are possible causes of the sheet jam.
Check each item and take the necessary action if there is a problem.
Sheet deformation, ripped sheet, foreign object
stuck to sheet
Dirty sheet feed roller, transfer roller

Cause Action
Inspect the sheet.
(Reference: "Inspecting Sheets" (P.23)
Clean the roller.
(Reference: "Cleaning Procedures" (P.40)