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Zhejiang Neoden Technology Co., Ltd
consideration; if set value 0, and open the cover in the mounting process, the machine continues mounting but with lower
speed as 20.
10. First trial and test
10.1 Program first dry run
Usually we would suggest you to have a dry run (no components are loaded) before production test. After it goes smoothly,
you can start to produce few boards.
10.2 First production test
1 Make a programming file
2 Test the file to pick and place components to finish one board.
10.3 Component Inspection
Inspection items
●Check if the specification, direction, polarity of components is aligned with what they should be.
●Whether the components are damaged or the pins are distorted.
●Whether the component is off beyond allowance.
The inspection methods vary from the equipment that you have.
Except visual inspection, all of amplifier, microscope, online or offline AOI equipment can be applied if the pitch of IC is
quite small to check.
Inspection Standard
Please follow SOP to do inspection or any other general standards (IPC Standard and SJ/T10670-1995 SMT General
Technical Requirements). Adjust the programming file according to the placement effect after the first production test.
1. If there are any specification, direction and polarity issues, please do the adjustment according to the process file.
2. If there is any deviations of the chip placement, please do the adjustment by following two methods:
(1) If the placement effects of all components are off in the same direction, it would be the fiducial issues. Please adjust
the coordinates of fiducials according to its value of deviation.
(2) If there are several components off beyond allowance, you’d better adjust their coordinates on working file with
down-looking camera. If there are couple of issues occur during test, some other points need to be considered.
3. Frequent pickup failure. Some suggestions are listed below
(1) The pick height is inappropriate, please revise the value after an inspection or a pick-test
(2) The pick offset needs an adjustment, it should be aligned with the center of component reel slot rather than that of
component.
(3) Due to peel strength or installation issue of wasted film, the film on tape won’t be peeled completely
