Roland VersaEXPRESS RF-640 Service Notes page 148

Remove the Grit Encoder Board.
5
Remove the Grit Encoder Stopper.
6
Remove the Grit Encoder.
7
Make sure not to scratch or leave any fi ngerprints
on the Grit Encoder.
Fix the Grit Encoder.
8
Both sides of the Grit Encoder are the same.
When fixing the Grit Encoder, make sure not to
scratch or leave any fi ngerprints on it.
Grit Encoder Board
Grit Encoder Stopper
Grit Encoder
Grit Encoder
3-74