At the same time, some cars that were not remodelled into air-conditioned cars were tentatively equipped only with control switches for air-conditioning, and also one Tc coach was replaced with another from the air-conditioned trains.
それと同時に、間に合わない車両については冷房制御スイッチだけ取り付けたり、冷房車編成のTcを1両差し替えるなどした。