The JR Yamanote Line has been suspended from the primary prepare on the whole line as a result of delays in nighttime development work on the Keihin-Tohoku Line inside the premises of Tokyo Station.
In addition, the Keihin Tohoku Line has additionally suspended operations on the up and down traces between Higashi-Jujo Station and Shinagawa Station, ranging from the primary prepare.
There aren’t any plans for resumption of operation in both case.