GE VIVID E9 Service Manual page 787

GE H
EALTHCARE
D GA091568, R
IRECTION
10-6-8-2 Generic procedure on probe leakage current (cont'd)
Follow these steps to test each probe for leakage current:
1.) Turn the VIVID E9 unit OFF.
2.) Plug the unit's mains power cord into the test meter, and plug the test meter into the tested AC wall
outlet.
3.) Plug the Chassis Ground Probe (saline probe) into the test meter's "CHASSIS" connector.
4.) Connect the ultrasound probe to be tested to the VIVID E9 unit.
5.) Put the saline probe and the ultrasound probe's probe face (imaging area of the probe) into the
saline bath.
To avoid probe damage and possible electric shock, do not immerse probes into any liquid
CAUTION
beyond the level indicated in the probe users manual. Do not touch the probe, conductive liquid
or any part of the unit under test while the ISO TEST switch is depressed.
6.) Power ON the VIVID E9 unit.
7.) After the VIVID E9 unit has completed the boot process, select the probe to be tested so it is the
active probe.
8.) Depress the LIFT GROUND rocker switch and record the highest current reading.
9.) Follow the test conditions and test limits described in:
• Table 10-9 on page
or:
• Table 10-10 on page
as applicable for every probe.
The test passes when all readings measure less than the stated limits.
Equipment damage possibility. Never switch the Polarity or the status of the Neutral when the
CAUTION
Ultrasound unit is powered on.
Power off the Ultrasound unit, allow the stored energy to bleed down, and turn the circuit
breaker off BEFORE switching the POLARITY switch and/or the NEUTRAL switch on the leakage
meter to avoid possible power supply damage.
Measurements should be recorded for each probe under the set of test conditions specified in:
• Table 10-9 on page
or:
• Table 10-10 on page
as applicable.
5
EVISION
10-22,
10-22,
10-22,
10-22,
Chapter 10 - Care & maintenance
VIVID E9 S M
ERVICE ANUAL
10 - 31