novocure Optune - Page 38

38Troubleshooting
26 Troubleshooting
Problem Possible Causes Actions to be Taken
Notification alarm
sounds 10 minutes
after the device was
powered on
1. Therapy Timeout The notification alarm on the device will sound if it is
powered on for 10 minutes, but therapy is not initiated.
This is a reminder to start therapy and does not indicate a
malfunction.
1. Silence the notification alarm by pressing the TTFields
button then wait a few seconds and press the TTFields
button again to initiate treatment. The blue indicator
around the TTFields button will illuminate to indicate
therapy is now on
2. If you encounter further alarms please review the general
"notification signal" section below
Low Battery indicator
light remains on after
battery replaced
1. Charger malfunction
2. Battery malfunction
3. Device malfunction
1. Replace battery with an additional charged battery
2. If problem is not fixed – call technical support at
855.281.9301
When powering
on the device
a continuous
notification alarm
sounds and all lights
remain on indefinitely.
Device does not
complete the self-test
1. Device is too hot
2. Device malfunction
3. Power Source Malfunction
1. Power the device o completely using the power switch
2. Verify the device is not hot to the touch
3. Connect the device to a dierent power source and try
powering on again
4. If device cannot be powered on by either the battery or the
wall power supply or if anything appears to be damaged
please contact technical support
Redness of the skin
under the transducer
arrays
Common side eect Use over-the-counter 0.1% hydrocortisone cream when
switching transducer arrays.
Shift transducer arrays 3/4 of an inch from the last location (so
the adhesive gel is between the red marks).
If the redness gets worse:
1. See your doctor
Blisters under the
transducer arrays
Rare side eect See your doctor for a prescription antibacterial cream. Use as
your doctor tells you.
Itching under the
transducer arrays
Rare side eect 1. Use over-the-counter 0.1% hydrocortisone cream when
switching transducer arrays
2. Shift transducer arrays over 3/4 of an inch from
the last location (so the adhesive gel is between
the red marks)
If the itching gets worse:
1. See your doctor
Pain under the
transducer arrays
Rare side eect Stop treatment.
See your doctor.