Oki ML420 Series User manual

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Check the contents: 1. Printer
2. Ribbon cartridge
3. Power Cable
4. CD with drivers and on-
line User Guide
5. Setup Guide

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1. 2.
1. Grasp tabs (1) and open access cover (2).
2. Remove printhead shipping retainer.

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1. 2.
3.
1. Grasp tabs (1) and remove the paper separator.
2. Remove protective material. Replace the paper separator.
3. Remove protective material from the pull-up roller assembly (2).

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1. With access cover open, grasp printhead (1) and slide to center.
2. Remove ribbon cartridge from packaging.
! Important! Leave the clear plastic ribbon shield (2) on the cartridge.

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1. Hold ribbon cartridge as shown with knob (1) up and ribbon shield (2) facing platen (3).
2. Fit grooves on sides at back end of cartridge over pins on ribbon plate (4).

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1. Lower front of cartridge over printhead (1) until it snaps into place.
2. Turn knob (2) clockwise to take up ribbon slack.

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Set the headgap lever (1) for the number of sheets in the forms you are using from 1-4. Use setting 5 for
envelopes or extra-thick paper. Adjust setting for the best print quality.

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1. Make sure both printer and computer are OFF.
2. Plug interface cable into printer port. Plug other end into computer.
! Parallel cable must be shielded, no longer than 6 ft (1.8m), and IEEE 1284-compatible.
Parallel USB

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1. 2.
1. Plug power cord into printer. Plug other end into a grounded outlet.
2. Turn the printer on. POWER light (1) comes on and ALARM light (2) comes on because paper
is not loaded.