OM POWER OM2000+ User Manual page 30

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If!there!is!a!fault!condition,!always!try!to!remove!the!cause!first.!If!it!is!not!a!hardware!failure,!it!usually!
succeeds.!For!example!high!VSWR,!high!Input!power,!mistune!of!PA,!high!temperature,!etc.!
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An!example!shows!situation!when!Input!
power!is!too!high.!By!pressing!PTT!safety!
circuit!will!react!quickly,!error!message!
appears!and!FAULT!LED!starts!blinking.!In!this!
case!screen!current!exceeds!limited!value!
(60mA).!!
After! abt.! 1! sec.! PA! returns! to! TX! mode.!
Reduce!Input!power!to!avoid!fault!repeating.!
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This!is!the!situation,!when!problem!with!high!
Input!power!persists.!Safety!circuits!reacted!3!
times,! and! then! switched! PA! to! STBY! mode.!
Permanent!fault!appears.!
To! return! PA! to! the! normal! operation,!
decrease! Input! power! first,! then! reset! fault!
status!and!go!back!to!the!OPER!mode.!
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If! resistor! R1! or! fuse! F3! is! damaged,! safety!
circuit! stops! starting! of! the! PA! and! fault!
message! appears! on! the! display.! It! is!
necessary!
component.!
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Exhibit!6!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Page!30!!from!35!
to! replace! the! damaged!
!!!!!!!!!!!!!!Fuse)F3)
! Resistor)R1)
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