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FONIX Troubleshooting Guide

Our current manuals, quick reference cards, and other reference material are available in PDF format.


If a FONIX program has alerted you that the Fryers Driver is not current or is otherwise not working right, or you are having trouble getting your FONIX instrument and your computer to communicate, go to the Communications Troubleshooting Guide



These are the most common problems that typically cause instrument failure. Please check these troubleshooting suggestions and follow the procedures outlined in your manual before contacting your local service distributor or Frye Electronics.

General Problems:

1. No power

a. Check ON switch(s).

b. Make sure the the power cable is plugged into a working wall outlet.

c. Check the fuse in the power entry module.

2. CRT/VGA/LCD display monitor is not working

a. Check the ON switch. (CRT/VGA monitors only)

b. Make sure the power cable is plugged into working wall outlet.

c. Check the monitor brightness and contrast controls and the LCD contrast knob.

d. Check the Screen Saver-push any front panel button to activate the screen.

Test Chamber Problems:

1. Test Chamber Microphone does not Level

a. Check your mic calibration.

b. Is the mic properly plugged into the instrument?

c. Are all connections clean and tight?

d. Is the mic cable loose, broken, cut or worn or frayed?

e. Make sure everything is out of the test chamber (except the mic) when trying to Level. (See Operator’s Manual)

f. Open the test chamber and listen for the leveling signal.

g. Is there an unusal amount of background noise in the test area? (air conditioning/heating fans, street noise, people talking, computer fans, etc.)

Coupler Problems:

1. HA-2 Coupler (BTE) adapter tubing is missing, loose or cracked

Replace with #13 thickwall tubing. Length: 0.6″ (15mm).

2. Test microphone is difficult to get into coupler or the ear level adapter does not easily seal to the other end of the coupler

Lubricate the black O-ring with light petroleum type lubricant.

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 solutions 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.

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