TM 9-4910-387-14-2
6-2.
TROUBLESHOOTING (cont)
H.
STARTER MICROSWITCHES MAY BE DEFECTIVE.
NOTE
There are two starter microswitches on the newer tester
models and four on the older models.
1 Connect one multimeter lead to microswitch contact (1) and connect
the other lead to microswitch contact (2). Push up on forward
contact arm (3).
2 Check for continuity. If continuity does not exist, replace the starter
3 Remove both leads. Connect one multimeter lead to microswitch
contact (5) and connect the other lead to microswitch contact (6).
Push in on reverse contact arm (7).
4 Check for continuity. If continuity does not exist, replace the starter
5 If counting circuit does not function, proceed to step I.
NOTE
Each wire that is tested for continuity should also be tested for a short to the tester frame. This is done by placing one multimeter
lead on the wire terminal and the other lead to the tester frame. Check for continuity. If continuity exists, the wire is shorted to
ground and must be replaced. This only applies to wires not connected to ground.
6-102