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Fuse Box
In the same block of the power supply switch and the power supply connector there is a sliding
box with one fuse for each power line wire. For proper operation both fuses must conduct
electricity. A cover opening fuse breakdown indicates excessive current absorption and usually is a
symptom of something seriously burnt. Have the EMG-USB2 properly checked by qualified
personnel before replacing the fuses. Replacing the broken fuses may not restore the EMG-USB2
to its original integrity without a careful diagnosis of the causes that made the fuses burn out. The
anomaly may have rendered the device no longer compliant with the safety standards. Should it
be necessary, in any case replace the fuses with others of the same type. Fuse type is indicated on
the rear ID label.
DANGER: Replacing the fuse with other fuse types can be very dangerous for patient and the
operator.
Fan
The fan on the rear panel cools the internal circuitry of the instrument. The airflow to avoid
amplifier overheating enters the EMG-USB2 from the slits on the bottom panel and exits through
the fan. The following cautions must be observed:
Ensure to leave at least 8 cm of clear space behind the EMG-USB2 to ensure a suitable airflow.
Do not obstruct the slits on the bottom panel.
Do not stop the fan.
Do not obstruct the grid on the rear panel (see FIG. 4).
REMARK: blocking the airflow can cause overheating and device breakdown. Ensure that the fan
rotate freely and that nothing obstructs or blocks it.
Hot air flow (fan)
Cold airflow (lower
panel slits)
FIG. 4 Airflow and minimum required space behind the device
pag. 16/31
EMG-USB2 User manual
> 8 cm
v.2.0
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