Chapter II
Portable digital multimeter
26
3.5. Multimeter
maintenance
3.5.1. Fuse self-test
When fuse F1 (0.63 A) or F2 (10 A) is blown, the display shows “FUSE.1” or “FUSE.2”,
accordingly.
If both fuses are blown, the display shows “FUSES”.
Replace the fuse or fuses concerned.
"
Note
Fuse F1 cannot be tested unless the switch is set to the
µµµµ
A/mA position.
Fuse F2 is located in the common circuit. Therefore, V,
Ω
Ω
Ω
Ω
, C and
measurements, and measurements in the 10 A range, become impossible
when it is out of service.
3.5.2. Battery self-test
When the BAT indication appears on the display, the instrument still has approximately 50
hours of operation, but specifications can no longer be guaranteed.
Replace the battery.
3.5.3. Replacing the battery or fuses
Open the multimeter casing as follows (refer to last page of the manual) :
1 - Remove the stand from the back of the instrument.
Figures 2 and 3
2 - Remove the SECUR’X cover using the stand.
Figure 4
3 - Remove the front cover using the stand as a lever.
Figure 5
4 - Remove the gasket.
5 - Replace the battery or fuse.
Before use, make sure that the gasket, then the front cover are carefully set back on the
instrument.
3.5.4. Cleaning
Clean the multimeter using a damp cloth. Do not use abrasives or solvents.
