FONIX FP40 Portable Hearing Aid Analyzer
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Appendix G: Troubleshooting Guide
These are the most common problems that typically cause instrument failure. Please check these
troubleshooting suggestions and follow the procedures outlined in this manual before contacting
your local service representative 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.
