waratah HTH618C, Руководство оператора

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Maintenance: General
T7M7G6M,00004B6 -19-03SEP20-1/1
Fault-Finding
General
With any fault finding, the first step is to decide where
to investigate. Sometimes this is obvious, but on other
occasions further investigation is required. A logical,
rather than haphazard, approach to making adjustments
or replacing parts is more effective.
Always take into account any warning signs or
abnormalities that may have been noticed in the period
preceding the fault (for example, power loss), and
remember: failure of a component such as a circuit
breaker, may only be a symptom of an underlying fault.
Whatever the fault, certain basic principles apply. These
are as follows:
1. Verify the fault.
Ensure symptoms are identified before starting work.
This is particularly important when investigating a fault
someone else has described.
2. Do not overlook the obvious.
For example, if an electrical fault is indicated, check
the diagnostic indicators before altering the wiring.
3. Cure the disease, not the symptom.
4. Do not take anything for granted.
Be aware that new components may be defective; do
not leave components out of a diagnosis sequence
just because they are new or recently fitted. When a
fault is diagnosed, the key evidence is often on hand
from the start.
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