OKIDATA ML590 Service Manual page 146

After installing the platen assembly, check the printhead gap adjustment.
this Service Handbook.
Cleaning
When cleaning, refer to Section 3.4 of this Service Handbook.
Lubrication
When lubricating, refer to Section 3.5 of this Service Handbook.
P/N 50098301 Platen Assembly (Narrow)
P/N 50098302 Platen Assembly (Wide)
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
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RSPL 590 B.2.04
RSPL 591 B.2.04
Refer to Section 3.3 of