Maintenance (Micron) workbook Iss07.pdf - 第60页
60 Issue 6, Nov 14 Module M-PM Preventive Maintenance
Issue 6, Nov 14
59
Objective SC15: Identify machine related causes of print defects
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.
The Perfect Solder Print Causes
Machine critical assemblies flat and level
Critical machine settings within tolerance
Machine calibrated
Machine clean and well maintained
Shown below are some common solder print defects. Suggest some machine related
causes of these defects
Bridging Incomplete
Misalignment Excess Print height
Causes of defects
60 Issue 6, Nov 14
Module M-PM
Preventive Maintenance
Issue 6, Nov 14
61
Objective PM1: Carry out DEK recommended monthly maintenance program
Preventive maintenance is designed to maintain the DEK machine in good working order
for as long as possible. Included are various checks and tasks that keep the machine clean
and lubricated. The most important part of the preventive maintenance is the cleaning, as
print materials can cause serious degradation of machine performance.
Using the technical reference manual as a guide, carry out the monthly PM routines.
NOTES: