3.If installed in the vertical position, ensure that the foot is securely attached and is stable.
4.Set the power switch of the system unit to Off.
5.Remove the covers.
6.Check for alterations or attachments. If there are any, check for obvious safety hazards such as broken wires, sharp edges, or broken insulation.
7.Check the internal cables for damage.
8.Check for dirt, water, and any other contamination within the system unit.
9.Check the voltage label on the back of the system unit to ensure that it matches the voltage at the outlet.
10.Check the external power cable for damage.
11.With the external power cable connected to the system unit, check for 0.1 ohm or less resistance in this illustrationbetween the ground lug on the external power cable plug and a jack screw on the parallel connector.
The following illustration is a typical representation of the rear view of a system unit.
Ground Lug
Jack Screw
12.If the system unit passes the test in the previous step, install the covers.
13.Check each external device that has its own power cable:
a.For damage to the power cord.
b.For the correct grounded power cable.
c.With the external power cable connected to the device, check for 0.1 ohm or less resistance between the ground lug on the external power cable plug and the metal frame of the device.
Reference Information
