12Power Saving FunctionIf there is no communication between the flash and thecamera for around 3 minutes, the flash will automaticallyswitch to power saving mode in order to save batterypower. "OFF" sign will appear in the LCD. The Ready lightwill be off while in power saving mode. To reactivate theflashgun, press any push buttons underneath the LCdisplay panel or switch the main switch off and on again.The flashgun is not completely switched off in powersaving mode. However, power consumption is drasticallyreduced. If you are not going to use your flashgun for awhile, we recommend you to turn the flash off.TroubleshootingCheck that AA Alkaline battery is used (not mercury orlithium-ion) and that the batteries have not run out.Make sure that the flash’s On/Off button has beenswitched to "On".Double check that all plastic battery wrapping has beenremoved and that the battery is installed to the correctpolarity.Switch the power dial to 1/16 power and press the Testbutton for test fire.