This part of IEC 62343, which is a technical report, describes failure mode effect analysis
(FMEA) for optical units of dynamic modules. FMEA is one of the effective and useful analysis
methods to determine the reliability evaluation test items and conditions which are defined in
future reliability qualification documents. In order to estimate the lifetime for a module, there
is a typical procedure. The first step is to identify the dominant failure modes. The second
step is to determine the acceleration tests according to these failure modes. The third step is
to carry out the test. The fourth step is to estimate the acceleration factors. Finally, the fifth
step is to calculate the lifetime of the dynamic module. The IEC 61300-2 series defines
environment and mechanical tests. This technical report describes the dominant failure mode
for dynamic modules and relevant tests from the IEC 61300-2 series.