GSI Novus™ Newborn Hearing Screening System User Manual
D-0113050 Rev H
Page 68 of 96
Pass checker symptoms, possible causes and suggested troubleshooting.
Symptom
Possible cause
Suggested troubleshooting
Cannot pass
impedance for one or
more electrodes.
Electrode lead wire is not
fully attached to the
preamp or to the Pass-
Checker
Check connections at the
preamp cable jack and on the
Pass-Checker and try again
Electrode lead wire has a
short in the wire
Replace the electrode lead wire
with a new one (may need to
replace more than one of the
electrode wires)
Connection of
preamplifier cable to the
Novus jack is not secure
Check the connection of the
preamp cable to the Novus;
remove it and re-insert it
verifying that it is securely
attached
Excessive artifacts
are observed during
the measurement
Electrode lead wire has a
short in the wire which
may lead to intermittent
contact
Replace the electrode lead wire
with a new one (may need to
replace more than one of the
electrodes)
Test does not pass in
one or both ears
Connection of insert
earphone cable into the
preamplifier cable jack is
not secure
Check the connection of the
insert earphone connector into
the preamplifier cable; remove
it and re-insert it verifying that it
is securely attached.
Insert earphone cable is
not securely attached to
the transducer box
Check the connection of the
insert earphone cable to the red
and blue transducers
Insert earphone adapter
is occluded with debris or
is cracked; more likely to
occur with the clear Ear
tip adapter
Clean the adapter using the
Infant Ear tip Cleaning kit brush.
Or replace the adapter with a
new one
Tubing of insert earphone
is crimped shut or has a
rip in the tube
Make sure the tubes are free of
any crimping or compression;
replace the tube with a new one
Insert earphone cable has
a short in the cable
Replace the insert earphone
cable with a new one
