Connecting To Line Power - Tektronix DMM4040 User Manual

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DMM4040/4050

Users Manual

Connecting to Line Power

To avoid shock hazard, connect the factory supplied three-

conductor line power cord to a properly grounded power outlet.

Do not use a two-conductor adapter or extension cord; this will

break the protective ground connection. If a two-conductor

power cord must be used, a protective grounding wire must be

connected between the ground terminal and earth ground

before connecting the power cord or operating the instrument.

2-6

1. Turn the Meter off, unplug the power cord from the Meter, and remove all test

leads.

2. Turn the Meter on its back.

3. Unscrew the retaining screw on the fuse access door as depicted in Figure 2-2.

4. Remove the protective cover from the fuse holders by slightly depressing the

back edge of the cover to unlatch it from the printed circuit board. Pull up on the

back edge of the cover and remove it from the fuse compartment.

5. Remove the defective fuse, and replace with one having the appropriate rating.

6. Replace the protective cover by pushing it over the fuses while aligning the

catches with the holes in the printed circuit board. Press the cover down until the

catches engage the printed circuit board.

7. Replace the fuse door and secure it by tightening the retaining screw.

Fuses

Figure 2-2. Replacing the Current Input Fuses

XW Warning

Bottom front

left corner

caw020.eps

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Dmm4050