To address the issue of work-in-progress items piling up in a new production cell, I would utilize the Kanban system to effectively identify and resolve the bottleneck. First, I would set up a Kanban board to visualize the workflow, clearly marking each stage of the production process. This would help in identifying where the bottleneck is occurring by observing where work items are accumulating. Next, I would establish WIP limits for each stage to ensure that no stage is overwhelmed with too many tasks at once. By doing this, we can maintain a steady flow and quickly spot any disruptions. Once the bottleneck is identified, I would analyze the root cause, whether it's due to resource constraints, process inefficiencies, or other factors, and then implement targeted improvements. This could involve reallocating resources, adjusting processes, or providing additional training to team members. Throughout the process, I would communicate regularly with the team to ensure everyone is aligned and any adjustments are made smoothly. This approach not only resolves the immediate issue but also fosters a culture of continuous improvement.