Yaskawa i80M Maintenance Manual - Manual (Page 191)

(c) Insert all modules in line with the guide of the
NC rack and tighten mounting screws (NC rack).
(d) insert the cables into the original positions.
(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.
(SMON) and (FILE: optional) boards are
provided with CMOS RAM (programs, parameters and
offset data) and with backup by super capacitor.
Therefore,
installation must be completed within
16 hours after removal of the boards.
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