Routine Maintenance
Special messages
The GSI 18 performs a self-check each time the instrument is turned on (the self-check
does not occur when instrument operation resumes from the “sleep mode”). Certain
messages will be displayed on the front panel LCD if any error in the instrument operation
is detected
.
These messages are described below.
Cal
When a transducer or frequency is selected that has a calibration error (e.g., right ear
selected at 2000 Hz), the word “CAL” will be displayed
.
The audiometer will not function
at this frequency with this ear selected, to prevent invalid results. The word “CAL” will be
displayed as long as the erroneous ear and frequency settings are selected
.
If the calibration
error is an isolated situation, changing either the frequency or the ear will restore normal
instrument function.
As in the case with any instrument malfunction, a certified service technician should be
contacted immediately
.
Remember to make note of the combination of selected ear and
frequency that cause the “CAL” message.
Exx
When an error code consisting of an “E” and a two digit number (xx = number) appears on
the audiometer’s display, a system error has been detected
.
The GSI 18 will enter a
“lockout” mode which will not permit the instrument to operate
.
The specific error code
will remain on the display for several seconds, then the instrument will shut itself down
completely
.
Should an Exx appear on the LCD, take the following steps:
1.
Power down, power up again
.
This could be only a temporary
failure and
may never appear again
.
However, should the Exx message appear again,
proceed to the following:
a.
Write down the numbers displayed on the display.
b.
Contact a certified GSI service representative and give them the numbers
of the error code.
1718-0100 Rev. E
3-5
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