GE Medical Systems LOGIQ ?200, Руководство по обслуживанию, Страница: 208 / 212

GE MEDICAL SYSTEMS
LOGIQ 200 SERVICE MANUAL
2138853
PERIODIC MAINTENANCE 7–14
REV 3
7–3–5 When There’s Too Much Leakage Current...
Chassis Fails
Check the ground on the power cord and plug for continuity. Ensure the ground is not broken, frayed, or
intermittent. Replace any defective part.
Tighten all grounds. Ensure star washers are under all ground studs.
Inspect wiring for bad crimps, poor connections, or damage.
Test the wall outlet; verify it is grounded. Notify the user or owner to correct any deviations. As a work around,
check the other outlets to see if they could be used instead.
Note
No outlet tester can detect the condition where the white neutral wire and the green grounding
wire are reversed. If later tests indicate high leakage currents, this should be suspected as a
possible cause and the outlet wiring should be visually inspected.
Probe Fails
Test the probe in another transducer interface connector.
If excessive leakage current is slot dependent, inspect the Transducer Interface board for bent pins, poor
connections, and ground continuity.
If the problem still has stayed with the probe, replace the probe.
Peripheral Fails
Tighten all grounds. Ensure star washers are under all ground studs.
Inspect wiring for bad crimps, poor connections, or damage.
Still Fails
If all else fails, begin isolation by removing the probes, external peripherals, then the on board ones, one at a time
while monitoring the leakage current measurement.
New Unit
If the leakage current measurement tests fail on a new unit and if situation can not be corrected, submit a Safety
Failure Report to document the system problem. Remove unit from operation.