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Service Guide ML393/ML393CPlus
Chapter 1 Specifications
1.6.18 Print Method
Printhead Type
General Information
Impact: Dot Matrix
24 pin printhead
.0078 inch (0.20 millimeter) diameter pins
Overheat Protection
When printhead temperature reaches 115 to 125 degrees Celsius, the printer stops bi-directional printing.
Uni-directional printing begins.
If the temperature exceeds 125 degrees Celsius, printing stops.
Printing will resume when the printhead temperature drops below 115 degrees Celsius.
NOTE:
Refer to Section Two for more information on printhead operation
.
Printhead Gap Information
Two items factor into printhead gap information.
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 0.017, +/- 0.001 inches (0.43, +/- 0.03 mm).
2. Printhead Gap Adjust
This is a manual adjustment performed by the end-user.
It is performed by moving the blue head gap lever, located on the right side of the printer.
The settings are 1, 2, 3, 4, 5, 6, 7, 8, 9
1 is the smallest (narrowest) gap.
9 is the largest (widest) gap.
Setting
Paper Type
1
12 - 15 lb. paper
2
20 - 24 lb. paper
3 - 4
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