TRS Advanced WB Intel Issue 02.pdf - 第131页
Issue 2, Nov 14 TRS Advanced Maintenance 131 Vacuum pressure and flow per tower Aim: To Verify/baseline the tooling vacuum capability and flow capability per tower. Allowing threshold settings to be defined for the machi…
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Issue 2, Nov 14
TRS Advanced Maintenance
131
Vacuum pressure and flow per
tower
Aim:
To Verify/baseline the tooling vacuum capability and flow
capability per tower.
Allowing threshold settings to be defined for the machines warning
systems.
All procedures to be completed using tooling
setup page
· At transport height with tray loaded drive TRP
over rails position
· Apply TRP pressure
· Toggle vacuum on
· Drive to vision height
· Toggle Z lock on
· Drive TRP to home position
· With the Vacuum remaining on remove a substrate from the tooling cap
creating a leak
· Using the vacuum readout on the machine MMI display record the value in
the table below
· Return the substrate to the position it came and record the readout from the machines
MMI Display
in the table below
· Once complete remove three substrates from their tower caps to define the
pre vacuum Threshold
Notes:
There should be more than a 10KPA drop in vacuum pressure when one
substrate has been
removed. This can very dependent on tower cap design but should be
equal to or more than.
If less than 10 KPA drop has been observed please contact your FSE or local
service control centre to
escalate for actions.
TRS Advanced Maintenance
132
Issue 2, Nov 14
Objective 43: Process Fault Finding
PRINT
OFFSET
PRINT
WEIGHT
STANDARD(notspecif ictoTRSstrips)
Boardfile/recipe Incorrect
Stencil Incorrectone/damaged
Squeegees Incorrectone/damaged/incorrectfit
Paste Incorrectone/age/excess/in suff icien tqty.
Vacuum Incorrectset/fault
Printoffsets Incorrectsetup
Visionalignmentsystem Inco rrectsetup/calibration/f ault
DURINGPRODU CTION
Stri p Toowarped/stiff/incorrectorie ntati on
AFTERPRODUCT
CHANGEOVER
Incorrectone
Incorrectfit(e.g.FM)
Incorrectset(Z)
Incorrectone
Incorrectfit(e.g.FM‐mov eduri ngpri n t)
Incorrectset(board‐stop)
Adapte rplate Incorrectset(Z)
Incorrectone
Incorrectfit(e.g.FM)
Incorrectfit(pitch&Z)
Surround
Tooling
TRP
PotentialImpac t