Emerging problems occurring after the observation of the production line and the problems possible to occur are evaluated by technical staff with the responsible Quality Assurance Engineer. During the evaluation, Risk Priority Factor (RPF) which is used in the Failure Modes and Effects Analysis (FMEA) is calculated for each problem. The impact (impact-I) on the body when the problem occurs, the probability of emergence of problems (probability-P) and probability of determinability (Determinability-D) are scored from 1 to 5 according to the criteria(at least 1, at most 5). These three scores are multiplied and priority factor is determined and written to the column of RPF. Then, RPF values are ordered from small to large into the O (Importance order-O) column. As a result, the first problem to evaluate among all has been detected. This study is presented in Table 3.