Sony Dcr-trv18 Minidv Handycam I Have Sony Camcorder, Mini Dv DCR-TRV18, Getting Corrective Message C:31:22, ,as Flickering, Can't Clean?

I have sony camcorder, mini dv DCR-TRV18, getting corrective message C:31:22, ,as flickering, can't clean? - sony dcr-trv18 minidv handycam

Correct message on the screen shows "C: 31:22 clean head, clean tap water purchased, but not play on the screen that flashes the whole time, not all the books say things, but no luck, very frustrating, S can some please help me