Hitachi VM-1700A - Manual (Page 63)

TROUBLESHOOTING
63
CLEANING THE INSIDE OF THE ELECTRONIC VIEWFINDER
If dust or foreign matter adheres inside the viewfinder, clean it by using the following
procedure.
1. Push the tab and hold it, then open the cover,
2. Clean the picture tube face and lens. To prevent scratching, use a soft non abrasive
cloth, swab or lens cleaning paper.
3. Close the cover.