We have a Kawasaki D Plus Controller that has triggered a couple errors which have made the robot arm inoperable.
(D1539) Power supply cicruit for PWM signal output malfunctioned.
(D1504) Abnormal current feedback of Jt 3 (Amp. failure or Power harness disconnect)
In our first attempt at resolving this error we replaced the 3.6 volt lithium battery. Error persisted.
We then purchased a replacement servoamp (50607 S1294). Error persisted.
Our third attempt at resolution, we replaced the circuit board (50999 S2824). Error persisted.
Does anyone have any guidance or suggestions on troubleshooting these 2 specific errors beyond the 3 attempted replacements we've made so far? Thank you in advance.