VORTEXS I LV E R SE R I ES1 2 3 4 5USER MANUALVORTEX SILVER SERIES V8P.224.9 Internal LED DescriptionThis section describes the internal status-LEDs which can be seen fromthe front behind the dust filter. These status LEDs can be helpful for trou-bleshooting in case of an unexpected amplifer behaviour.1. Overload Protect limiter LED:This white LED will flash if the Overload Protection Limiter is activated.Please see chapter 4.7.2 for more details.2. FuseProtect limiter LED / Mains supply status indicator LED:During normal operation, this red LED indicates that the FuseProtect lim-iter is activated. Please see chapter 4.6.5 for more details.Additionally, if the amplifier has been powered down (standby), this LEDindicates the status of the mains:SMPS / Amplifier Off (standby) and FuseProtect LED On: Bad mains volt-age or no mains voltage at allSMPS / Amplifier Off (standby) and FuseProtect LED Off: Mains voltage OK3. SMPS On-LED:This green LED will be constantly on as long as the main SMPS inside theamplifier is working. If the amplifier has been powered down (standby) thisLED will be slowly pulsating, indicating that the SMPS is off but ready to beswitched on again at any time.Note that the picture shows the internal LED’s of newer amplifier versions(production date > Q3/2012).4. ICL On-LED:This green LED indicates that the ICL (Inrush Current Limitation) is work-ing properly. This LED should always be on as long as the amplifier isconnected to the mains (even if powered down or in standby). If this LEDis not on although the amplifier is connected to mains then please checkyour mains distribution.See also chapter 3.3.2 and 4.6.1 for more details.5. Mains Surge Overvoltage Protection LED:This yellow / orange LED indicates the the surge overvoltage protection isstill active. Please see chapter 4.6.3 for details.Older amplifiers (production date < Q3/2012):For all older amplifiers please note that the white Overload Protection LEDis missing. Additionally, the SMPS-On-LED and the FuseProtect-LED areoriented in a different direction, so that they might not be easily visiblewhen facing the amplifier. But if you look slightly from the bottom (as onthe picture) these LED’s should still be clearly visible.4 OPERATION