GE Medical Systems LOGIQ ?200 Service Manual page 202

GE MEDICAL SYSTEMS
REV 3
7–3–3 Chassis Leakage Current Test (Continued)
Meter Procedure
Follow these steps to test the unit for leakage current.
Turn the LOGIQ a200 unit OFF.
1.
2. Plug the unit into the meter, and the meter into the tested AC wall outlet (Refer to ILLUSTRATION 7–4).
Outlet Test
Lamps
Functions
Selector
Neutral
Open /closed
AC
outlet
3. Plug the black chassis cable into the meter's "CHASSIS" connector and attach the black chassis cable clamp
to an exposed metal part of the LOGIQ a200 unit (Refer to ILLUSTRATION 7–4).
4. Set the tester's "FUNCTION" switch to CHASSIS position.
5. Follow the test conditions described in the following table for every test point on the unit.
TEST
6. Keep a record of the results with other hard copies of PM data kept on site.
Normal
Reverse
Polarity
Power
On/Off
GROUND AND CHASSIS LEAKAGE CURRENT TEST
ILLUSTRATION 7–4
TABLE 7– 1
CHASSIS LEAKAGE CURRENT TEST CONDITIONS
1 Mounting screw for transducer receptacle
2 Wheel support
3 Mounting screw for CRT housing
4 Mounting screw for peripheral plugged into unit
5 Mounting screw for other peripheral powered by unit
LOGIQ a200 SERVICE MANUAL
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Chassis
Cable
Clamp
Power
Cable
CONDITION
7–8
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PERIODIC MAINTENANCE