I've had the ZR700 for about 2 years and it's worked out well for my uses. In the past week I started to get a flashing red warning light that I can't find an explanation for in the user manual. It's a small red rectangle with a looped arrow through it. Has anyone encountered this and could explain to me what I need to do to get rid of it? It flashes in both the record and playback modes. Thanks.