Oki B721 Maintenance Manual page 180

Oki Data CONFIDENTIAL
(5) Pull out the duplex unit by holding the grips on its both sides.
Grip (blue)
(6) Open the upper cover of the duplex unit and check for jammed paper in the duplex
unit. If jammed paper remains, pull it out. Then, close the upper cover.
Upper cover
45487001TH Rev.1
Grip (blue)
Duplex unit
(7) Return the duplex unit to the printer.
(8) Close the front cover.
6. Troubleshooting procedure
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