Maintenance (Micron) workbook Iss07.pdf - 第73页

Issue 6, Nov 14 73

Issue 6, Nov 14

Objective BT3: Perform benchmark test and record results

Apply small amount of paste or suitable lubricant to stencil to lubricate squeegees.

Run QC-Calc package on printer.

Carry out a minimum of 100 full machine cycles.

On completion of the test record the following information:

• X alignment Cp/Cpk =

• Y alignment Cp/Cpk =

• Theta alignment Cp/Cpk =

• Front Pressure Cp/Cpk =

• Rear Pressure Cp/Cpk =

• Front Print Speed Cp/Cpk =

• Rear Print Speed Cp/Cpk =

• Separation Speed Cp/Cpk =

Note: The error message ‘No variation in selected data – Increase significant digits’ may

appear’ for pressure and speeds due to the lack of variation. In this instance, no values are

required.

Task: Identify the arrowed items below:

NOTES:

(3) Theta Error (arcsec)

Cp = 1.11

10.0474 143

-17.0000

37.0000

10.0000

(3) Theta Error (arcsec)

Cp = 1.11

10.0474 14310.0474 143

-17.0000

37.0000

10.0000

72 Issue 6, Nov 14

Objective BT4: Identify common causes of poor performance

With the instructor, discuss the typical causes and solutions to any poor results.

NOTES:

Try video model mode

Fiducial capture

Disconnect chase clamps -no pressure

Screen move -Chase clamps

Screen move - Stretch Try new screen

Board move - belts

Remove tooling

Board move- Rail parallelism Reduce board width .5mm

Print carriage bearings

Run dry align

Calibrations

Calibrate

SUMMARY OF ADJUSTMENTS

Issue 6, Nov 14