1. An adjusting device for a television camera apparatus which comprises: (a) a signal processing section for processing video signals which indicate the pattern of a test chart and which contain adjusting data, (b) a data detecting section for detecting the adjusting data from said video signals which are supplied from said signal processing section, (c) an arithmetic operation section for calculating correcting data from reference data and said adjusting data detected by said data detecting section, (d) a correction signal circuit for converting said correcting data calculated by said arithmetic operation section into a correcting signal and supplying said correcting signal to said signal processing section and also to a deflection circuit, and (e) a memory section for storing said reference data and said correcting data as reference data, said memory section including at least a non-volatile memory for storing said reference data during loss of power to said memory section.