Product Manual

Directions for Use Routine Maintenance 21
Special messages
The AM282 Audiometer 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 AM282 Audiometer
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 Welch Allyn service representative and give them the numbers
you recorded.