Roland VersaCamm VS-640 Service Notes page 228

One of the messages appears at the completion of the set
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up. In case of Setup error, check the followings.
Dirt/Scratch on the Encoder Scale.
Dirt/Scratch on the Encoder Module.
Encoder Scale is not between the Encoder Module.
Backlash of the Carriage Motor Gear and the Drive Gear.
Fixation between the Carriage and the Carriage Belt.
Bad Contact in the cables.
When LINEAR ENCODER SETUP is completed, perform the
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[LINEAR CALIB.] in the Service Menu.
In case of an error, check the followings.
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Dirt/Scratch on the Encoder Scale.
Dirt/Scratch on the Encoder Module.
Encoder Scale is not between the Encoder Module.
Backlash of the Carriage Motor Gear and the Drive Gear.
Fixation between the Carriage and the Carriage Belt.
Bad Contact in the cables.
LINEAR ENCODER
SETUP COMPLETED
LINEAR ENCODER
SETUP FAILED
PRINT MENU
LINEAR CALIB.
NOW PROCESSING..
LINEAR CALIB.
SETUP COMPLETED
LINEAR CALIB.
PRINT MENU
LINEAR CALIB.
NOW PROCESSING..
LINEAR CALIB.
FAILED TO SETUP
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