(7) Carriage unit removal
1) At first, on the main chassis, mark the positions of the screws that fix the carriage rail to the main chassis (3 points for each
screw: the left, right, and center).
2) Remove the timing slit film. Be cautious to keep the film free from any grease or scratches.
3) Using a longnose pliers, release the left end of the pulley holder spring, and remove the carriage belt.
Be cautious to keep the belt free from any grease.
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