TRS Advanced WB Intel Issue 02.pdf - 第132页

TRS Advanced Maintenance 132 Issue 2, Nov 14 Objective 43: Pro cess Fault Finding PR INT OFFS ET PR INT WE IGH T ST AND AR D  ( not  spec i f i c  to  TRS  st rips) Bo a rd  fi l e  /  r ecip e I n co rr ect S t …

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

OFFSET

WEIGHT

STANDARD(notspecif ictoTRSstrips)

Boardfile/recipe Incorrect

Stencil Incorrectone/damaged

Squeegees Incorrectone/damaged/incorrectfit

Paste Incorrectone/age/excess/in suff icien tqty.

Vacuum Incorrectset/fault

Printoffsets Incorrectsetup

Visionalignmentsystem Inco rrectsetup/calibration/f ault

DURINGPRODU CTION

Stri p Toowarped/stiff/incorrectorie ntati on

AFTERPRODUCT

CHANGEOVER

Incorrectone

Incorrectfit(e.g.FM)

Incorrectset(Z)

Incorrectone

Incorrectfit(e.g.FM‐mov eduri ngpri n t)

Incorrectset(board‐stop)

Adapte rplate Incorrectset(Z)

Incorrectone

Incorrectfit(e.g.FM)

Incorrectfit(pitch&Z)

Surround

Tooling

TRP

PotentialImpac t

Issue 2, Nov 14

TRS Advanced Maintenance

133

Objective 44: Locate trays in the printer.

Ten trays are fitted to prevent contamination from print medium or other foreign bodies.

Nine of the trays are located around the rising table and a protective tray is placed in the

machine after the stencil has been loaded. (For more detail see MPU 602321*1)