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Chapter 21 Testing
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BECS-528 Computerized Embroidery Machine's Manual
Chapter 21
Testing
Note: only the experienced maintenance technician is permitted do this operation. The
operation in this Chapter involves some mechanical works, so the operator shall be careful
Encoder Test:
By rotate the main shaft, user can test the zero pulse (0PL), A phase pulse (APL) and B
phase pulse (BPL) of the encoder and check their values.
21-1 Main Shaft Speed Testing
This operation is to display the set speed and real speed comparatively thorough turning
the main shaft, so as to debug the main shaft board.
21-2 Mechanical Part Test
This operation is to test bar switch, limit switch, head solenoid, thread-trimming
solenoid/motor, thread-holding solenoid, thread-catching solenoid/motor and thread-breakage
detection device and sequin-lifting device (for the machine with sequin function) etc.
21-3 Turn the Main Shaft to Any Angle
This operation is to turn the main shaft from 100 degree to any angle to maintain and test
machine conveniently.