Chapter 1
Unpacking
Unpacking
Choose a sturdy table, desk or printer stand to place your printer on when you remove it from the carton.
Be sure to save all packing materials in case you need to ship the printer again. Check the box for these contents:
1) Printer
2) Ribbon cartridge
3) Power cord
Note: Interface cable and paper are sold separately.If any of these items is missing or damaged, see your dealer immediately for a replacement.
ML520/521 ( 96-02-04 )
Remove The Protective Film
Remove The Protective Film
Peel the clear protective film from the carriage cover (1). Lift up on the ridged area at either end of the carriage cover ( 2 ), and peel the clear protective film from the access cover ( 3 ). Press the carriage cover back into place.
ML520/521 ( 96-02-04 )
Remove The Shipping Retainers
Remove The Shipping Retainers
Open the access cover ( 1 ) by grasping the tabs at either end and lifting. Remove the printhead shipping retainer ( 2 ), leaving the cover open. Grasp the front edge of the paper separator ( 3 ) and pull it up.
Remove the styrofoam shipping retainer, then lower the paper separator and press it into place.
ML520/521 ( 96-02-04 )
Install (or Replace) The Ribbon Cartridge
Install (or Replace) The Ribbon Cartridge
Note: Be sure to use only ribbons specifically for use with MICROLINE 520/521 printers. For best results, use genuine OKIDATA ribbons, Part No. 52107001.
With the access cover open, slide the printhead ( 1 ) to the center of the platen.
Caution!!! Printhead may be hot!!!
If you're replacing the ribbon, lift up the cartridge at the end nearest the platen, then lift it out, and discard it.
Remove the new ribbon cartridge from its packaging.
Holding the ribbon cartridge with the knob ( 2 ) facing up and the ribbon shield ( 3 ) facing the platen, fit the grooves on either side at the back end of the cartridge over the pins on the ribbon plate ( 4 ). Lower the front of the the cartridge over the printhead ( 5 ) until it snaps into place, then turn the knob ( 2 ) in the direction of the arrow (clockwise) to take up the ribbon slack.
ML520/521 ( 96-02-04 )
ML520/521 ( 96-02-04 )
Connect to Power and Computer
Connect to Power and Computer
You must supply the cable for connecting your printer to your computer. A shielded cable is required in order to ensure compliance of this equipment with FCC regulations.
Make sure both the printer and the computer are OFF. Plug the power cord into the back of the printer ( 1
). Plug the other end into a grounded outlet.
These instructions are for the standard parallel interface. If you have the optional serial interface, see the instructions included with it.
Plug the interface cable into the partallel port on the back of the printer ( 2 ), and secure it in place with the wire loops ( 3 ).
ML520/521 ( 96-02-04 )
Power Up
Power Up
Turn the printer on. The printhead will cross back and forth along the platen, and the pins will gently fire to determine the printhead gap setting. The POWER light will come on. The ALARM light will also come on, but don't be concerned: it's just telling you that there is no paper loaded.
ML520/521 ( 96-02-04 )