TM 9-4910-387-14-2
6-2. TROUBLESHOOTING (cont)|
B. CONTROL TRANSFORMER MAY BE DEFECTIVE.
1 Connect one multimeter lead to terminal C6 (1) and the other lead to
terminal D6 (2).
2 Remove both leads. Connect one multimeter lead to terminal C5 (3)
and the other lead to terminal D5 (4).
3 Check for continuity. If continuity does not exist, replace the control
transformer (5) (p 6-187).
4 If power is not present at 24 VOLTS DC outlet assembly, proceed to
step C.
C. SELENIUM RECTIFIER MAY BE DEFECTIVE.
NOTE
The following checks are for resistance.
1 Connect the positive multimeter lead to terminal C5 (1) and the
negative lead to terminal D3 (2). A high resistance reading should
be indicated. Reverse the leads and a low resistance reading should
be indicated .
2 Connect the positive multimeter lead to terminal C5 (1) and the
negative lead to terminal D4 (3). A low resistance reading
should be indicated. Reverse the leads and a high resistance
reading should be indicated.
6-66
