00198481-01_Technical_Training_E_by_DEK_EN - 第110页
12 The Perfect Print 12.2 Exercise 110 Technical Training E by DEK 12/2017 Incomplete Causes: …………………………………………………… …………………………………………………… …………………………………………………… …………………………………………………… …………………………………………………… …………………………………………………… …
12 The Perfect Print
12.1 The Perfect Print
Technical Training E by DEK 12/2017 109
12 The Perfect Print
12.1 The Perfect Print
It is important that the Technician understands which areas under their control can have a direct
influence over the print quality and how to identify a defect and quickly rectify the problem.
A perfect print is characterized by:
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Machine critical assemblies flat and level
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Critical machine settings within tolerance
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Machine calibrated
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Machine clean and well maintained
12.2 Exercise
Shown below are some common solder print defects. Suggest some machine related causes of
these defects.
Bridging
Causes:
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12 The Perfect Print
12.2 Exercise
110 Technical Training E by DEK 12/2017
Incomplete
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Misalignment
Causes:
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Excessive Print height
Causes:
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12 The Perfect Print
Room for Your Sketches and Notes
Technical Training E by DEK 12/2017 111
Room for Your Sketches and Notes