Quality Control to Reduce Appearance Defects at PT. Musical Instrument

Dikka Safriyanto · Fibi Eko Putra · Putri Anggun Sari

958 citations0/0 files storedInternational Journal of Innovative Science and Research Technology (IJISRT)

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Management and Optimization Techniques Quality and Supply Management Management Systems and Quality Improvement

Abstract

This research was conducted at PT. Musical Instruments that aim to analyze quality control to reduce appearance defects in piano products on the assembling production line. The problem faced by the company is the high level of product defects which has an impact on decreasing quality and customer satisfaction. The research method used is Six sigma with a DMAIC (Define, Measure, Analyze, Improve, Control) approach. This type of research is quantitative, with data collected in the form of the number of production defects in pianos. To analyze the causes of defects, a fishbone diagram with 4M + 1E factors is used, namely Man, Machine, Method, Material, and Environment. The results of the analysis show that the main factors causing appearance defects in piano products include incompatibility with work methods, lack of worker training, use of non-standard materials, suboptimal jig conditions, and unsupportive working environment. Based on these findings, improvement proposals are given in the form of improving standard operating procedures, regular training for workers, the use of high-quality materials, regular maintenance and calibration of jigs, and improvement of work environment conditions. The implementation of this improvement proposal is expected to reduce the number of appearance defects in piano products, improve product quality, and meet the quality standards expected by PT. Musical instrument.

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