Trouble Shooting the Nucleus CI 22

Child's Name: ____________________________

Date of Last Mapping: _____________________

Recommended Mic Sensitivity: ______________

Audiologist: ______________________________

Processor Serial Number: ___________________

Suggested Spare Equipment: 1 short cord (goes from mic to coil), 1 long cord (goes from processor to mic), 1 AA alkaline battery, coil-check wand, lapel microphone.

Quick Check

Using the coil-check wand, hold the circle of the wand over the child's coil placed on his/her head. The red light on the wand should light up, and flash in response to your voice. If it does not, remove the coil from the child's head and place the coil in the palm of your hand (but still attached to the headset and processor). Place the wand over the coil and it should light up in response to your voice. NOTE: This check tells you that the signal is being transmitted through the entire external system, however, it does not tell you a about the quality of the signal. It is recommended that you proceed with the following protocol for trouble shooting on a regular basis.

Step 1

Battery Check

A. Have the child remove the processor and headset. Turn the dial to "T" for test. The red "M" light at the top of the processor should shine continuously.

Trouble Shooting

1. If the "M" light blinks once per second, the battery may be low.

2. If the "M" light does not illuminate at all, check the polarity of the battery or replace the battery.

Step 2

Transmitting Coil and Cords

B. Set the function knob to "N" and the sensitivity dial to 0. Place the transmitting coil against the top front of the speech processor. The "C" (coil) light should light up.

1. If the "C" light does not illuminate, replace the short cord and try again.

2. If the "C" light still does not light up, replace the long cord, (making sure to align the dots on the microphone end) and try again.

3. If there is still no light at this point, the coil may be defective.

Step 3

Microphone Check

C. With the function knob on the "N" and the sensitivity at the recommended number, speak into the microphone and the "M" light should flicker to your voice. If the light does not flicker or is extremely dull, follow steps 1 and 2.

D. With the function knob on "N", if the "M" light keeps blinking once per second and does not respond to your voice, the MAP may be corrupted and the child may not hear anything. Follow step 3.

1. Plug the lapel microphone into the external socket located at the top of the processor. Repeat check. If the "M" light flickers in response to your voice, the behind the ear microphone may be defective and need to be replaced.

2. If the "M" light still does not light with the lapel mic in place, try changing each cord and repeating mic check.

3. Notify the parent if you suspect the mic is defective or that the MAP may be corrupted.

Step 4

Ling Six Sound Test

E. With the child wearing the speech processor, have him/her respond to the Ling Six Sounds (ah, oo, ee, sh, s, m) at their level of ability (detection or identification). If the child does not respond at his/her typical level of performance, follow step 1.

1. If the child does not respond typically, or if he/she reports a change in the way the processor sounds, the processor may need to be reMAPped. Please inform the parents so they can make arrangements for audiological management as necessary.