The cells installed check them for serviceability. For this aim, move curtains control key 14 and open the objective and the viewfinder. Looking through the inspection window 21 (Fig. 5) of the viewfinder press down the release knob 10 (Fig.2) until it is stopped slightly.
If the cells are serviceable and inserted in a correct way, a red color indicator should shine at the upper left corner of the viewfinder. If the indicator does not shine check up whether the cells are inserted in a correct way and contact areas are clean. If the indicator does not yet shine replace all the cells.
Checking up energetic level of power cells during taking pictures is made according to the indicator (shines or does not shine) on pressing down the release knob.