Yaskawa i80M Maintenance Manual - Manual (Page 177)

(d) Insert the CN34 and CN35 cables into the original
positions.
(3) Checking Functions After Replacement
(a) Check that +5V, 12V, and outputs are not
shorted due to overloading.
(b) Apply the first power and second power again and
check that no alarm occurs.
(c) Check that the spindle can be controlled manually.
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