Frye FONIX FP40D - Manual (Page 152)

FONIX FP40 Portable Hearing Aid Analyzer 144 FONIX FP40 Portable Hearing Aid Analyzer
3. A bump or peak in the low frequency response curve
a. There may be a hearing aid vent leak. Be sure to Fun-Tak the vent.
b. There may be a coupler vent leak.
c. The #13 coupler tubing could be cracked or broken.
PROBE PROBLEMS:
1. Probe Reference Mic does not Level.
a. Check the reference mic calibration.
b. Be sure the reference mic is properly plugged into the instrument.
c. Are all connections clean and tight?
d. Are the mic cables loose, broken, cut, worn or frayed?
e. Is the Leveling signal coming out of the speaker? If not, check cable and connections.
f. Make sure the distance from the speaker to the ref. mic during leveling is about 12” (max. 18”).
2. Cleaning probe tubes
DO NOT REUSE probe tubes. There is NO recommended cleaning procedure. Germicidal solu-
tions can leave a residue inside the tubing which can cause test result errors. DO NOT cut off
any portion of the tube.
PRINTER PROBLEMS:
1. Printer does not work
a. Check for a paper jam.
b. Press the FEED Button.
c. Make sure the print head lock-down lever is released.
2. Test results do not print on paper
Make sure you are using thermal paper. To check it, take a hard object, e.g. a car key, and
scratch the surface of the paper on both sides. If a black mark appears it’s thermal paper. If not,
it’s plain paper and will not work.