Troubleshooting - Abr Issues - Maico easyScreen Operation Manual

3.4 Troubleshooting – ABR Issues
In case of problems see below for symptoms, possible causes and suggested troubleshooting.
Table 2 Troubleshooting
SYMPTOM POSSIBLE CAUSE
Cannot pass Ineffective skin
impedance for preparation
one or more
Electrode has lost
electrodes
contact with the skin
Electrode lead wire is not
fully attached to the
preamplifier
Electrode lead wire has
a short in the wire
Connection of preamplifier
or BERAphone
the easyScreen ABR/OAE
connector is not secure
Excessive Baby is too active,
artifacts are moving, sucking, crying,
observed muscle tension, etc.
during the
Electrode is losing
measurement
contact with the skin
Electrode lead wire has
a short in the wire or
BERAphone
has poor internal
contact which may lead
to intermittent contact
Electrical interference is
interfering due to AC
connection
Electromagnetic
interference is present
from other electronic
devices in the
environment
High refer rate Screening babies when
they are too active
8508935 Rev. 4
Operation Manual easyScreen
SUGGESTED TROUBLESHOOTING
Remove electrode and use NuPrep
skin preperation product to prepare the skin.
Check contact of electrodes to the skin at the
prepared sites.
Check connections at the preamplifiercable
jack and try again.
Replace the electrode lead wire with a new
one (may need to replace more than one of
the electrode wires).
Check the connection of the preamplifier or
®
cable to BERAphone
remove it and re-insert it verifying that it is
securely attached.
Pause the recording and calm the baby.
Swaddle the baby in a blanket. Resume
recording only when the baby is quiet.
Check electrode contact to skin making sure it
is contacting the prepared skin.
Replace the electrode lead wire with a new
one (may need to replace more than one of
®
electrode the electrodes).
If easyScreen is being used in the cradle with
AC attached, unplug the cradle power supply
from the outlet to run on battery only.
Shut down all unnecessary devices near the
test area including cell phones, tablets, lights,
TVs, etc. Move as far away as possible from
devices that cannot be powered off.
Ask the baby's doctor or nurse to assist with
troubleshooting if the baby is connected to
monitoring devices to determine if they can be
powered off temporarily for troubleshooting.
RFID devices used for security that are
attached to or near the baby may cause
interference. Ask the nurse or doctor if they
can be temporarily removed.
Try testing in a different location.
Perform screenings only when the baby is quiet –
preferably sleeping, comfortable, and recently fed.
Screen just after feeding when Mom is still
holding the baby.
23
®
cable to the easyScreen;
®
or other
04/04/2019