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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 d…
11 Benchmark Test
108 Technical Training E by DEK 12/2017
Our Goal
Exercise
Identify common causes of poor performance
With the instructor, discuss the typical causes and solutions to any poor results.
Summery of Adjustment
Board move- Rail parallelism Reduce board width 1mm
Fiducial capture Try video model mode
Board move – belts Remove tooling
Print carriage bearings Run dry align
Screen move –Chase clamps Disconnect chase clamps –no pressure
Calibrations Calibrate
Screen move - Stretch Try new screen
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
Causes:
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Misalignment
Causes:
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Excessive Print height
Causes:
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