GE AMX 4+, Инструкции по функциональной проверке

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AMX−4+ FUNCTIONAL CHECK
(MODEL 2169360, 2236420 & 2275938 SERIES)
DIRECTION 2173224−100
GE HEALTHCARE
REV 8
26
To avoid electric shock, remove the null post adapter from the Null jack after a test lead zero
is performed. The Null jack becomes potentially hazardous during some of the other test
conditions.
11. Push ZERO LEADS button until the display shows 0.000 Ω
12. Now connect one end of the test lead between the V/Ω/A jack o f the test meter and other end to
an exposed conductive surface of the DUT ensuring that the input power plug of the DUT remains
in the test socket on the side on the Fluke ESA612. Refer to Table 1: Conductive surface test points
for AMX for the list of conductive surfaces (accessible dead metal parts) of the AMX system.
When a current of 200mA from the current source with a no-load voltage not exceeding 24V
at a frequency of 50/60Hz is applied between conductor terminals for 5 to 10 seconds, the
voltage drops between the terminals. The resistance determined using the current and
voltage drop should n
ot be greater than 0.2 Ohm (200 mΩ).
The resistance value will be displayed on the Fluke. Record the test results in Table 2: Results
of the Protective Earth Resistance Test for AMX series.
13. Using steps 10 - 12 above, take measurements for each test point identified in Table 1: Conductive
surface test points for AMX Record test results in Table 2: Results of the Protective Earth Resistance
Test for AMX series as appropriate. (Appendix 1: Test Point Locations for AMX series for images of
test points for respective systems).
Manufacturer recommendation is to perform Null test before testing each test point.
Test Point Component Test Point Description
1 Collimator Collimator Skin Spacers
2 Tube X-ray Tube (On the HV Cable Cathode Ring)
3 Column Rivets on the top column cover (Applicable only for AMX4+)
4 Bin M4 Screw inserted into PEM nut on receptor bin
5 Tube latch Park Latch Assembly on the Chassis
Table 1: Conductive surface test points for AMX
Expected Test Results
The resistance, when measured, should NOT be greater than 0.3 Ohm (300mOhm).
Test Point Units Expected
Value
Measured
Value
Result
(Pass/Fail)
Collimator Skin Spacers Ω ≤ 0.3
X-ray Tube (On the HV Cable Cathode Ring) Ω ≤ 0.3
Rivets on the top column cover (Applicable
only for AMX4+)
Ω ≤ 0.3
M4 Screw inserted into PEM nut on
receptor bin
Ω ≤ 0.3
Park Latch Assembly on the Chassis Ω ≤ 0.3
Table 2: Results of the Protective Earth Resistance Test for AMX series
If the measured value exceeds the expected value, then refer to Appendix 3: AC Power plug
troubleshooting
for power plug troubleshooting procedure to fix the grounding issues.