YASKAWA YASNAC i80 Maintenance Manual page 181

(3)
Checking Functions After Replacement
(a) Check that +5V, ~ 12V, and +24V outputs are not
shorted due to overloading.
(b) Apply the first power and second power again and
check that no alarm occurs.
(c) With model JANCD-FC903, check that switches on the
machine control panel can be operated.
171