When the stitcher nail head is provided with a clamping nail, usually easy to affect the normal clutch operation, open the nail head side cover remove punching head to clean , and add lubricating oil before reinstall it
If the nail head  positioning is not accurate, check the F3 fuse 34-35 (AC), fuse F9 50-51 (DC) and brake coil resistance line (15 K), such as whether it is normal; if nails appear continuous nailing action, you need to check the electrical damage
If the baffle board photoelectric induction is not normal, you can adjust the photoelectric induction device, so that the distance to the induction  maintains moderate, to ensure that the board will be able to move after the board.
In order to reduce the emergence of these problems should pay attention to the following: order to reduce the above problems should pay attention to the following points:
You'd better use high quality flat stitching wire with good steel and surface coating smoothly；Check whether the parts of the line to adjust the bad and caused by blocking Check whether the parts of the feed line is not adjusted to cause blockage；Adjust related parts so that the line movement can be kept relaxed and comfortable. The corresponding repair or replacement measures are taken to the bottom die with serious wear. Corresponding repair or The replacement measures are taken to the bottom die with serious wear.