Insulation Testers
Basic Maintenance
5
Figure 1. Replace the Batteries
Test the Display
Press and hold the blue key, and simultaneously turn the DUT on. Compare the display with the
example in Figure 2. Check all segments for clarity and contrast.
Figure 2. Display Test
Backlight Test
The display backlight is a toggle function controlled by H. Each press of Hcauses the
backlight to change states, on to off or off to on. To test the backlight:
1. Press H twice to verify that the toggle function works.
2. Turn the backlight off.
Fuse, Fast, 315 mA, 1000 V, Min Interrupt Rating 10000 A Fluke PN 2279339
Battery, 1.5 V AA Alkaline, NEDA 15A, IEC LR6 Fluke PN 376756
F315 mA 1000 V
Min interrupt rating
10000 A
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