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Service Guide ML380
Chapter 3 Maintenance & Disassembly
3.3.02 Gap Between Platen and Printhead
General Information
The printhead gap adjustment should be performed when the following occur.
1. Print quality is darker on one side of the document.
2. Parts are replaced.
Printhead (3.2.02)
Space Rack (3.2.04)
Carriage Frame (3.2.13)
The printhead gap should measure .016 inch, + / - .002 inch (0.41 + / - 0.05 millimeters)
Procedure
1. Move the release lever (1) to the open position (front).
2. Set the printhead gap adjusting lever (2) to range 1
3. Move the carriage to the left side of the platen and rotate the left adjusting collar (3) to obtain the correct
gap between the platen and the printhead.
4. Move the carriage to the right side of the platen and rotate the right adjusting collar to obtain the correct
gap between the platen and the printhead.
5. Check the gap setting at the left, center, and right of the platen.
When the gap is correct at all positions, do the following check.
1. Set the adjusting lever to range 5
2. Check the gap setting at the left, center, and right of the platen. It should measure .027 inch, + / - 0.002
inch.
Summary of Contents for ML380
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