15B MAX/17B MAX
Users Manual
12
General Maintenance
Periodically wipe the case with a damp cloth and mild
detergent. Do not use abrasives or solvents. Dirt or
moisture in the terminals can affect readings.
To clean the terminals:
1. Turn the Product off and remove the test leads.
2. Shake out any dirt that may be in the terminals.
3. Soak a new swab with isopropyl alcohol and work it
around the inside of each input terminal.
Test Fuses
XW Warning
To prevent electric shock or injury, remove the
test leads and any input signals before you replace
the fuses.
To test the fuses:
1. Turn the rotary switch to Q.
2. Plug a test lead into the A or mA
μA terminal and touch
the probe to the W terminal. See Figure 7.
A good A terminal fuse reads <0.5 Ω.
A good mA μA terminal fuse reads <10 kΩ.
If the display reads OL, replace the fuse and test
again.
If the display shows any other value, have the
Product serviced. See Service and Parts.
Figure 7. Test Fuses