You should remove the tape and then reinsert it again and then try again. If that doesn't work, take out the battery and put it back in then try again. Those are the only two suggestions Sony suggests. BTW, it is in the back of your manual.
Sony (Digital 8 Handycam)DCR-TRV250
Each time I go to play a tape an arrow symbol starts blinking with "C:31:22" with a ding ding noise. What do I do?