How Universal Robots are maintained
1. Current detection fault (such as E019, E001):
(1) The control board Q1 (15050026) is broken.
(2) 7840 bad: when the inverter is energized, use DC gear, black to connect 5 pins, red to disconnect 6, 7, 8 pins, the value is 2.5, 2.5, 5 is normal, otherwise 7840 is bad.
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