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15) Observe proper centering of land pattern on video display. If
centered, proceed to step 16. Otherwise, repeat steps 9-14
until proper centering is achieved.
16) Tighten center set screw on top of right indexing tab.
Figure 23:
Top and Side View of Indexing Tab
8-3
Vacuum Nozzle Planarity
The Vacuum Pick nozzle must land flush on the PCB component in
order to achieve parallelism and adequate suction. Performing the
following procedure can rectify problems in vacuum nozzle planarity.
1) Remove the cover on the Alignment Apparatus by removing the
three bolts on the top of the cover and the “Y” adjustment knob.
The “Y” adjustment may have to be brought forward to allow the
cover to clear the shaft.
2) Place a PCB on the board holder and install the large nozzle.
3) Lower the alignment apparatus to the PCB.
NOTE:
To achieve parallelism in the “X” direction, perform
steps 4-7. In order to achieve parallelism in the “Y”
direction, perform steps 8-11.
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