One: inspection of drilling files.
1: Use the hole-to-disk command dfm repair pad snapping to move the right drilling, the normal default can be, if the offset is large, the snapping max is changed to 2mil (it is forbidden to use the disk-to-hole command, otherwise the pad is easy to deviate, as shown in the figure).
Check whether there are heavy holes, if there are heavy holes, under normal circumstances, manually delete the small holes, keep the large holes, if the metallized holes and non-metallic holes overlap together, the non-metallic holes are plated with two drills, and the copper is cut 2mil unilaterally. Check the hole with the drill file and the hole diagram, pay special attention to the hole generated by the single-sided pad of the Protel series, and the hole map and the drilling file must correspond one-to-one (in general, the hole generated by the single-sided pad is not identified in the hole map, and this situation needs to confirm with the customer whether the hole needs to be drilled, the properties of the hole and the connection relationship of the inner layer); Use Analysis Signal Layer Checks (Outer)Missing Pad for PTH to check for the presence of holes and disks.
2: Check whether there is a description of the slot, check it with the drilling file and the hole map, note that the description of the slot may be hidden in the hole map (generally the slot will be marked with an oval or square in the hole map), if there is a slot, pay attention to whether the shape of the inner negative plate isolation disk or flower pad is consistent with the shape of the slot, if it is inconsistent, it needs to be changed;
3: When you need to add drilling holes to check the hole drawing, you need to see the hole symbol diagram customer hole diameter identification, and when the customer size has a length * width, you need to make a slot hole.
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VIII 8 III 68.