TM   55-2090-201-14&P 3-49. MINI-PROBE,   TYPE   A   AND   B   SEPARATORS   (Continued). L O C A T I O N ITEM A C T I O N R E M A R K S Test    Procedure Meter Reading (VDC) Test   Conditions Remarks light/button (6)  thereby grounding   the mini-probe test   terminal.   24 ton  (6)  to illuminate,   the first   (prefil- ter)   stage solenoid   opera- ted  oil  dis- charge   valve (7) to open, the   solenoid operated   water discharge valve  (8)  to close,  and overboard   dis- charge   light (9) to go out. Replace   the mini-probe (5) if a 24±5 VDC   reading-is not   obtained. C.  Connect  the test   meter leads  first to   contacts 5  and  9,  and depress   the first   stage (prefilter) oil  dump light/button (6). Next, 24 connect   the test   meter leads  to  con- tacts  7  and 9  and  again depress   the first   stage C.    A  24  VDC  read- out   between contacts  5  and 9  indicates  the first   stage (prefilter  oil discharge   valve (7)  and  the first   stage (prefilter) dump   light/but- ton  (6)  are  re- ceiving  a  sig- nal  from  mini- probe  (5)  and that  the  print- ed  circuit board  is  func- 3-374