FUJITSU Image Scanner fi-4120C - Manual (Page 74)

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4. Remove the Pick roller from the scanner.
1) Grip the knobs on the sheet guide with your fingers, and lift it up to remove.
2) Rotate the Pick roller bushing in the direction of the arrow.
3) Remove the Pick roller while lifting it up in the direction of the arrow.
CAUTION
The Pick roller Bushing is hard. Do not turn this bearing with your fingernails.
Pick roller bushing