Sharp ER-A770 Instruction Manual page 64

3. Replacement of the ink ribbon cassette
When the print becomes faint, replace the ink ribbon cassette with a new one according to the
procedures described below.
Be sure to turn off the remote printer before replacing the ink ribbon cassette.
6.
Remove the slack in the paper and set the roll in
position.
7.
Pass the top end of the paper through the paper cutter
on the paper cover and close it.
1.
Pull up the ribbon cover and remove it.
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