OKIFAX 5700/5900 6 - 126.7 LEDs Test1. PurposeTo check all LEDs on operation panel by lighting.2. ProcedureL O C A L T E S T2 S E N S . C A L I B R A T I O N3 > L E D T E S T4 T O N E S E N D T E S TL E D T E S TE X E C U T I N GP R E S S S T O P T O C A N C E LENTER/→ KeySTOP KeyLEDs go on/off in the following order:1.ALARM2.DARK3.NORMAL4.LIGHT5.STD6.FINE7.EX.FINE8.PHOTO9.All LEDLEDs 1-9 go on/off in the above order repeatedly until the STOP key is pressed.