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JT5 Operator’s <strong>Manual</strong> Systems and Equipment - 99<br />
Electric Strike System<br />
Problem Possible cause Possible solution<br />
Strobe light on drilling unit<br />
does not work during total<br />
test<br />
Improper connections with<br />
control module<br />
Check connections and wiring<br />
harness<br />
Defective strobe light 1. Disconnect strobe and connect to<br />
external 12V power source.<br />
2. If strobe does not work, replace it.<br />
Alarm on drilling unit does<br />
not work during total test<br />
Defective control module<br />
Improper connections with<br />
control module<br />
Have control module checked or<br />
replaced<br />
Check connections and wiring<br />
harness<br />
Defective alarm 1. Disconnect strobe and connect to<br />
external 12V power source.<br />
2. If strobe does not work, replace it.<br />
Strobe light and alarm on<br />
drilling unit do not work<br />
during total test<br />
Defective control module<br />
Improper connections with<br />
control module<br />
Defective control module<br />
Have control module checked or<br />
replaced<br />
Check connections and wiring<br />
harness<br />
Have control module checked or<br />
replaced<br />
EC2 code displays and<br />
current problem indicator is<br />
on<br />
Improper connections with<br />
control module<br />
Check cable connections on control<br />
module and current transformer<br />
Defective current transformer 1. Disconnect current transformer.<br />
2. Check for 20-40 ohms from pin 1<br />
to pin 4, 20-40 ohms from pin 1 to<br />
pin 2, and less than 1 ohm from<br />
pin 2 to pin 4.<br />
EV1 code displays and<br />
voltage problem indicator is<br />
on<br />
Defective current transformer<br />
cable<br />
Defective control module<br />
Improper connection of voltage<br />
limiter to ground stake<br />
Defective voltage limiter<br />
Defective control module<br />
1. Disconnect cable from<br />
transformer and control module.<br />
2. Check continuity of cable.<br />
3. If continuity is zero or cable is<br />
damaged, replace.<br />
Have control module checked or<br />
replaced<br />
Check voltage limiter connection to<br />
ground stake and verify that ground<br />
stake is driven into the ground<br />
Have voltage limiter checked or<br />
replaced<br />
Have control module checked or<br />
replaced<br />
CMW
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