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BGA-3500 Series Manual 5/01
2. Problem: Image of pad pattern and PCB appears to be on at angle.
Check:
• Is the camera on an angle?
Possible Solution
• With a .050” hex key or jewelers screwdriver, loosen the camera setscrews located on the camera body
near the lens connector. Gently rotate the camera so the image appears straight, and then retighten the
setscrews. The camera should be in a position that when the board holder is moved, the image moves in
the same direction.
Please note: This step should be performed only if the land patterns and the PCB appear to be on an angle,
not the component image. If the component appears to be in need angular adjustments, the theta axis
should be rotated.
3. Problem: Vacuum not responding when actuated.
Probable Cause:
• Position of the vacuum selector switch is incorrect.
Possible Solution:
• Switch the vacuum selector switch to ensure that it corresponds with the method of actuation that you
have selected to use. If using the FS-24 footswitch, make sure this switch is in the correct position. If
using the micro switch located in the vacuum pickup head, make sure that this switch is in the indicated
position.
4. Problem: Both images are overlaid perfectly on the monitor, but when the component is placed it is
misaligned.
Probable Cause:
• Machine is out of calibration
Possible Solution:
• Calibrate the machine. The calibration procedure is thoroughly discussed later in the manual.
• Z-Axis height is not correctly set
Possible Solution:
• The component height knob needs to be adjusted so that the component leads or balls are barely in
contact with the height adjustment block that is testing on the bare component slide (without component
tooling plate installed). This step should be performed when the Z-Axis knob is rotated fully clockwise so
that the vacuum head is in the fully upward position.
5. Problem: When placing a QFP, the image is split and magnification is increased, and regardless of X, Y,
and theta adjustments made, the will not image perfectly overlay.
Probable Solution:
• The fine Z-Axis knob needs to be adjusted so the component leads barely come in contact with the height
adjustment block resting on the bare component slide (without adjustable component tooling fixture
installed). This adjustment should be made while the Z-Axis knob on the placement arm is rotated fully
clockwise so the placement head is in the fully upward position.
• Calibrate the machine. The calibration procedure is thoroughly discussed later in the manual.
