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TECHNICAL REFERENCE APPENDIX PREVENTATIVE MAINTENANCE 3.62 Appendix to Micron Technical Manuals Chapter Issue 1 Feb 15 dates or a specific word or phrase. Each occurrence of an e rror for example, can be examined to see …

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TECHNICAL REFERENCE APPENDIX
PREVENTATIVE MAINTENANCE
Chapter Issue 1 Feb 15 Appendix to Micron Technical Manuals 3.61
Accuracy Check For an accuracy check, except where stated otherwise, thirty test cycle meas-
urements are set (preceded by ten cycles unmeasured to allow the machine to
settle). Pre and Post print measurements are taken to record the accuracy of
the alignment in CPK values and the front and rear squeegee pressures
displayed in bar units.
SPC Results Where the QC Calc for Windows program is installed and customers have
employed the ASM Equipment Utilization Programme, SPC data capture can
graphically show critical alignment and squeegee pressure accuracy. The
graphs in their visual form are often useful in determining the optimum mainte-
nance plan.
NOTE
ASM Equipment Utilization Programme is available from ASM Customer Sup-
port Group.
Customers may opt to use the collected data in their own management system,
ASM cannot provide support for any programme other than ASM EUP.
Examining the
Collected Data
In addition to examining the SPC data which is displayed graphically in the QC
Calc for Windows program, engineers can extract information about machine
performance from other sources.
The data collected on the machine is stored in ‘event.dat’ and ‘readings.dek’
files, accessible in the following locations, E:\config\readings.dek for SPC
data and E:\config\event.dat for error occurrences. Information can be dis-
played in a text editor and specific data can be examined eg, events between
Visit Pre X Pre Y Pre Theta Post X Post Y Post Theta Front Sqy Rear Sqy
1st 2.00 1.63 1.97 1.84 1.40 1.60 5.15 4.86
2nd 1.89 1.63 1.84 1.80 1.40 1.60 5.00 4.86
3rd 1.86 2.00 1.98 1.48 1.48 1.70 4.98 4.86
4th 100 Cycles
1.84
100 Cycles
1.94
100 Cycles
1.76
100 Cycles
1.63
100 Cycles
1.46
100 Cycles
1.56
100 Cycles
4.50
100 Cycles
4.80
5th
6th
7th
8th
9th
10th
11th
12th
TECHNICAL REFERENCE APPENDIX
PREVENTATIVE MAINTENANCE
3.62 Appendix to Micron Technical Manuals Chapter Issue 1 Feb 15
dates or a specific word or phrase.
Each occurrence of an error for example, can be examined to see if the rate at
which it has occurred has increased (is it a random occurrence or an increasing
trend?).
Authorization At the end of each monthly task a Summary/Remarks form is provided to allow
the engineer to make comments or express observations. He must sign off and
date the form so that there is a record that the schedule has been completed.
NOTE
The following pages can be used as a template to create a preventative
maintenance schedule. They can be photocopied and stored as a permanent
record of maintenance tasks performed.
readings.dek
event.dat
27/04/2000 14:00:02 40022 Valid Dongle Detected
27/04/2000 14:00:22 41570 Rail Lifted Error
27/04/2000 14:00:14 48273System Initialised
27/04/2000 14:00:14 48273System Initialised
DATA X reverse [mm] ,0,0000.0,0000.0,0.414,-0.02234
DATA Y reverse [mm] ,0,0000.0,0000.0,0.521,-0.07776
DATA T reverse [mm] ,1,0000.0,0000.0,2.414,-0.05568
CONFIG CamAx2
CONFIG FACTORAL TTHJXCK
27/04/2000 14:00:30 50001 Machine RecoveryStarted
27/04/2000 14:00:14 56183 System Power On
27/04/2000 14:00:14 56183 System Power On
27/04/2000 14:00:28 41212 Product Data Changed
27/04/2000 14:00:16 325876 PCIB Ready
27/04/2000 14:00:16 325876 PCIB Ready
27/04/2000
14:00:02 40022 Valid Dongle Detected
27/04/2000 14:00:02 3867 Power Up
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TECHNICAL REFERENCE APPENDIX
PREVENTATIVE MAINTENANCE
Chapter Issue 1 Feb 15 Appendix to Micron Technical Manuals 3.63
Monthly
Maintenance
Each month the following tables are filled in prior to carrying out any equipment
checks. Run ten cycles prior to making the thirty test measurements.
SPC Alignment
Check
Follow details in the Accuracy Check section previously described in this
chapter. Record details for each visit.
Machine Cycle
Count
Record the machine cycle count for each visit.
Visit Pre X Pre Y Pre Theta Post X Post Y Post Theta Front Sqy Rear Sqy
1
2
3
4 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles 100 Cycles
5
6
7
8
9
10
11
12
Visit Insert the Cycle Count No. of cycles between visits
1
2-
3-
4-
5-
6-
7-
8-
9-
10 -
11 -
12 -