Replacing the Fuse
Warning
• To avoid possible electric shock or personal injury, turn off the Toner or Probe and disconnect all test leads
before replacing the fuse.
The fuse is located in the battery compartment and is used to protect the tester if the leads are connected
to a "live circuit" when the continuity/resistance ranges are selected. The condition of the fuse can be
checked by selecting the continuity range, with the test leads disconnected.
To replace the fuse, do the following steps as shown in Figure 13:
1. Turn off the Toner or Probe and disconnect all test leads before replacing the fuse.
2. Open the cover to remove the battery carefully as Figure 13 shown below.
3. Use tip #0 screwdriver to unscrew the battery compartment.
4. Remove the blown fuse and replace with a fuse of the correct type and rating (05 ÷ L20mm
250V/250mA).
5. Re-screw the battery compartment, place the battery back, and finally close the cover.
6. Turn the Toner's rotary switch to position to detect Ethernet service status and tele-
phone service.
Turn the Toner's rotary switch to position to detect line voltage and to test continuity.
Turn the Probe's rotary switch to " " to detect 1KHz, two-note toning for Probe.
Turn the Probe's rotary switch to " " to detect 1 KHz legacy analog signals with audio indicator from
speaker.
All above LED indicators should light up as it did after replacing the fuse properly.
7. If the Toner and/or Probe are still not functional by following step 6 after replacing the fuse, please
contact the original store for arranging an RMA through our technical support department.
Figure 13 Replacing the Fuse
1 Turn off the Toner or Probe and
disconnect all test leads before
replacing the fuse
2.Remove the battery
3.Remove the screws
4.Remove the fuse
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