D-0114042-D – 2020/03
Sera™ - Additional Information Page 46
Optional Sera
TM
ABRIS pass-checker
Cannot pass
impedance for one
or more electrodes.
Electrode lead wire is not
fully attached to the
preamplifier or to the Pass-
Check cable connections at the preamplifier cable
jack and on the Pass-Checker and try again.
Electrode lead wire has a
short in the wire which may
lead to intermittent contact.
Replace the electrode lead wire with a new one (you
may need to replace more than one of the electrode
Connection of preamplifier
cable to the Sera
TM
transducer connector is not
Check the connection of the preamplifier cable to
the Sera
TM
; remove it and re-insert it verifying that it
is securely attached.
Excessive artifacts
are observed during
Electrode lead wire has a
short in the wire which may
lead to intermittent contact.
Replace the electrode lead wire with a new one (you
may need to replace more than one of the electrode
Test does not pass
in one or both ears.
Connection of insert
earphone cable into the
preamplifier cable jack is
Check the connection of the insert earphone
connector into the preamplifier; remove it and re-
insert it verifying that it is securely attached.
Insert earphone cable is
not securely attached to
Check the connection of the insert earphone cable
to the red and blue transducer boxes.
Insert earphone adapter is
occluded with debris or is
cracked; more likely to
occur with the clear Ear tip
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
Make sure the tubes are free of any crimping or
compression; replace the tube with a new one if
Insert earphone cable has
Replace the insert earphone cable with a new one.
Low battery on the Pass-
Checker? Is the LED
flickering?
Contact an authorized technician to arrange to
change the battery on the Pass-Checker. We
recommend annual battery change at the time of
TM
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