37Troubleshooting
26 Troubleshooting
Note, when calling your device support specialist or the technical support line, please have the serial number of the
equipment accessible.
Problem Possible Causes Actions to be Taken
Device power
indicator light does
not light up after
turning ON the device
1. Device not connected to
power source
2. If Battery – battery depleted
3. Battery malfunction
4. If power supply – not
properly plugged into the
wall
5. Device malfunction
6. Power supply malfunction
1. If on battery – check battery gauge to verify it is not
depleted. If it is – replace with a charged battery or the
power supply
2. Verify both the device and the power source are properly
connected and re-try
3. Evaluate the integrity of all connectors. Nothing should
appear to be damaged or broken in any way
4. If device cannot be powered on by either the battery or the
wall power supply or if anything appears to be damaged do
not use the device
5. Call technical support at 855.281.9301
Any cable detached
from transducer array/
connection cable/
device
1. Too much physical force to
cables
2. Device malfunction
1. Silence the notification signal by pressing the TTFields
button
2. Evaluate the connectors. If intact – reconnect and re-start
therapy
3. If anything appears damaged or cannot be properly
connected do not try to use the device
4. Call technical support at 855.281.9301
Device dropped or
wet
Incorrect use 1. Press TTFields button to stop therapy
2. Turn OFF power switch
3. Call technical support at 855.281.9301
Device alarm on 1. Low battery
2. Cable loose or
disconnected
3. Device is too hot – vents
on the device are blocked
4. Local hot spot on
transducer array from
laying on a pillow, for
example
5. Poor transducer array
contact due to hair growth
or other reason
6. Device malfunction
7. Device is turned ON, but
the therapy has not been
activated
If low Battery light is yellow:
1. Replace battery as described above in Section 18
2. Turn on treatment
If the Error light lights up but the low Battery light is not lit:
1. Press the TTFields button to stop the alarm
2. Wait a few seconds then press the TTFields button again
3. If the blue lights around the TTFields therapy button light
up – the therapy has now been activated
If the notification signal recurs within a few minutes:
1. Silence the notification signal and power the device down
completely
2. Disconnect all equipment and make sure that nothing
appears to be damaged or broken. If something is –
replace the damaged item before trying to power the
device back
3. Re-connect all equipment in proper order and power the
device back up. Verify the self-test is completed and press
the TTFields button
4. Check vents on device to make sure they are not blocked
5. If lying down, move your head
6. Make sure transducer arrays are well stuck to the head, add
tape if needed
7. Restart treatment
8. If alarm keeps going, turn o the device and call technical
support at 855.281.9301
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