mcmurdo S4 Rescue SART, Руководство по обслуживанию

Страница: 20 / 27

Commercial in confidence
Page 17
mcmurdo mcmurdo mcmurdo mcmurdo
4. FAULT FINDING
Due to the nature of the SART fault finding is limited. The steps shown below should be sufficient
to trace the fault to a major sub-assembly, which can then be replaced.
The sequence given below requires that each part is completed satisfactorily before proceeding
to the next part. It is, for example, assumed that any faults found at a particular stage are
remedied before continuing.
The following table is applicable to all versions of SART.
Fault Cause Action
Dead battery Check battery volts
Displaced magnet Check switch ring
Red LED never on
Faulty PCB Replace PCB
SART in active mode Remove input signal No standby mode indication
Stuck in active mode Replace PCB
No active mode indication
when SART triggered Faulty PCB
Replace PCB
LED indicates active mode
But beeper does not sound Faulty PCB Replace PCB
Drift on PCB Retune PCB Frequency limits wrong
Faulty PCB Replace PCB