The electronics industry in Thailand heavily relies on machinery for large-scale production to enhance efficiency and reduce costs. As a result, a dedicated maintenance department is crucial to ensure proper machine upkeep, which includes maintaining a record of maintenance history. A study conducted at an electronics printer production unit, part of the plastic parts manufacturing department at an industrial plant in Nakhon Ratchasima, Thailand, identified inefficiencies in managing maintenance data for 21 types of machinery, totaling 833 machines. The maintenance data recording process was found to be time-consuming and lacked a systematic management approach, resulting in operational inefficiencies. This paper aims to improve the process and method of data entry to enhance efficiency and reduce recording time. A Fishbone Diagram was used to identify the root causes of these inefficiencies. Improvements were implemented based on the principles of Eliminate, Combine, Rearrange, and Simplify (ECRS). Microsoft Access was chosen to replace Microsoft Excel for maintenance data recording, as it is better suited for managing complex datasets. After implementation, the average data recording time per session decreased from 66 minutes to 30 minutes, representing a 54.55% reduction. Additionally, the time to record individual machine maintenance data was reduced from 15.1 minutes to 7.2 minutes per session, a reduction of 52.32%. These results demonstrate the effectiveness of the proposed approach in optimizing maintenance data management within the electronics industry.