EAP 110 ANNUNCIATOR
9.
TROUBLE SHOOTING
A number of problems can cause the EAP 110 Annunciator not to function properly. Refer to
the following list of typical problems. Consult the factory for any detailed information or for any
problems not listed.
CAUTION
!!!
Before opening the annunciator to perform any service task, it is imperative to isolate the
control system from any possible source of power. Failure to do so may result in serious
personal injury or death due to electrical shock.
Service procedures must be undertaken by qualified personnel only!
SYMPTOM
CORRECTIVE ACTION
Annunciator does not power up even with correct
DC power applied
- Check that there are no wiring errors/short
circuits connected to the Annunciator.
Note:
The EAP 110 contains an electronic fuse that
triggers upon an overload condition and does
not reset until the supply voltage is removed,
and overload condition is corrected.
Lamp Test does not activate any LED lights on the
EAP Annunciator
- Check if adequate DC supply voltage is applied
to the EAP & the polarity is correct.
- Verify the Lexan ribbon cable is connected to
the EAP printed circuit board.
DC Power On LED is illuminated and
Communication link is correct however EAP 110
does not respond to any activated fault conditions
from the Engine controller.
- Verify JP1 on the EAP 110 PCB has a jumper
connector on it (Jumper On = Run Mode)
PM058 Rev 2 06/01/18
Thomson Technology
26
