MD Helicopters 369-500, Maintenance Instructions Manual

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CSP-HMI-3
MD Helicopters, Inc
.
MAINTENANCE MANUAL
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97-02-00
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Table 101. Troubleshooting ICS System (Cont)
Symptom Corrective Action Probable Cause
No response when system is
turned on.
Overload has tripped circuit
breaker.
Allow system to cool down
approximately two minutes and
press circuit breaker to ON position.
If circuit breaker trips again, leave
system OFF and troubleshoot and
repair as required. Disconnect ICS
control panel connectors to
determine if trouble is in harness or
ICS control panel.
Defective circuit breaker. Replace circuit breaker.
Defective circuit or component in
system.
Replace system unit.
System controls not set properly. Reset controls and check operation.
Intermittent operation during flight.
Loose grounding lead connection. Check system connectors. Tighten
loose connector.
Loose grounding lead connection. Tighten connections on ground
studs.
Defective chassis ground. Repair ground (Ref. Chap. 96 for
electrical repair instructions).
Open or shorted wire in wiring
harness.
Repair wire (Ref. Chap. 96 for
electrical repair instructions).
Broken connector pins. Repair pin or replace connector.