Changing Cutter Unit; Turn off the QL-500/550 and unplug the power code from the electrical outlet.; Open the DK Roll compartment cover, lift up the label - Page 68

APPENDIX

64

Maintenance

Changing Cutter Unit

Repeated use of the cutter unit will eventually reduce the sharpness of the blade.  When this occurs, 
purchase a replacement cutter and then follow this procedure to replace the cutter. Refer to 
Accessories on page 67 for details on purchasing a replacement cutter.

1

Turn off the QL-500/550 and unplug the power code from the electrical outlet.

2

Open the DK Roll compartment cover, lift up the label 
lever, and remove the DK Roll from the compartment.

3

Using a screw driver, loosen the screw securing the 
cutter unit.

4

Grip the tab and lift out the cutter unit.

5

Press the new cutter unit in the machine with the two holes aligned with the to posts in 
the machine.

6

Tighten the screw securing the cutter unit.

7

Install the DK Roll and close the DK Roll compartment cover.

For details refer to “Installing the DK Roll” on page 13.

8

Plug the power cord back into the electrical outlet.

The screw securing the cutter unit cannot be completely 
removed. Simply loosen it to remove the cutter unit from the 
QL-500/550.

Be very careful not to touch the sharp edge of the cutter.