Oki ML521, ML520 manual Printhead Gap Adjustment, Gap Control, Semi Auto Gap, 3, 4, 5, 6, 7, 8

1. Printhead Gap Adjustment

This is a SERVICE ADJUSTMENT made by a technician.

It is covered in Section 3.3 of this Service Handbook.

The Adjustment measures 0.014 +/- 0.001 inches 90.35, +/-0.03 mm).

2. Printhead Gap Adjustment

This is a MENU ITEM in the SET-UP Group.

It fine tunes the automatic setting of the printhead gap.

The settings are 0, 1 and -1.

Use 1 to darken print (if output is consistently light).

Use -1 to lighten print (if output is consistently dark).

3. Gap Control

This is a MENU ITEM in each (Paper Feed) Group.

The Groups are REAR FEED, BOTTOM FEED, and TOP FEED.

Gap Controls determines how the printhead gap is set.

The settings are listed below.

Auto Gap, Semi Auto Gap, 1, 2, 3, 4, 5, 6, 7, 8, 9

An explanation of each setting follows.

Auto Gap

This is the factory default.

Automatically determines paper thickness of the first page.

During single-sheet feed, each page's thickness is checked while a job is

printing.

Semi Auto Gap

Similar to Auto Gap.

Automatically determines paper thickness of the first page.

During single-sheet feed, each page's thickness IS NOT checked "while" a

job is printing.

1, 2, 3, 4, 5, 6, 7, 8, 9