TM   55-2090-201-14&P 3-3. OPERATORS    TROUBLESHOOTING    PROCEDURES    (Continued). Table  3-4. Test   Procedures   for   Electrical   and   Electronic   Components, Type   A   Separators   (Continued). Test    Procedure Meter Reading (VDC) Test    Conditions Remarks 2. (Continued) A  malfunction  in the  printed  cir- cuit  board  is  in- dicated  when  the mini-probe    gene- rated  signal  is not  relayed  to the   solenoid valve. Refer  to  para- graph  3-49  for mini-probe replacement. A.  Connect  the test   meter leads  to terminal contacts  1 and 8 on Terminal Board  TB1 O B.  Connect  the test   meter leads  to  ter- minal   con- tacts  1  and 3. Depress the  No.  1 (prefilter) oil  dump light/button (7). This grounds   the mini-probe test   terminal.   24 A.  Replace  the  mini- probe  (5)  if  a zero  reading  is not  obtained  on the  test  meter. Refer  to  para- graph  3-49  for replacement   of mini-probe. B.   Depressing   the No. 1  oil  dump light/button   (7) will  cause  the mini-probe   to generate  a signal. This  lights  the first  stage  (pre- filter)  oil  dump light  (7). The first  stage  (pre- filter)    solenoid operated  oil  dis- charge  valve  (8) opens. The  sole- noid   operated 3-16