Epson WorkForce Enterprise WF-M20590 Series User Manual page 129

User's Guide
Options
1. Attach the paper cassette lock.
2. Press the middle button, and then remove the key.
Keep the key in a safe place.
Note:
When you remove the Paper Cassette Lock from the paper cassette, insert the key all the way into the lock. Make sure you
remove the key after the button appears in the middle of the slot .
Related Information
"Types and codes of Optional Items" on page 126
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