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3. Plug Headphones into Headphones Jack
PRIOR TO PUTTING HEADPHONES DIRECTLY EARS VERIFY THE SIGNAL IS NOT
TOO LOUD, IN CASE OF DEVICE FAILURE A LOUD SIGNAL MAY DAMAGE EARS**
4. Press Enter to Start Test #4
5. Move Headphone selector to 1-2. You should hear a (440HZ tone)
VERIFY: Moving phones knob changes volume of headphones. FAIL If no change in volume
6. Move Headphone selector to 3-4. You should hear a low (220HZ tone)
VERIFY: Moving phones knob changes volume of headphones. FAIL If no change in volume
7. Move Headphones selector to All, You should hear the both 220HZ and 440 HZ tone again.
VERIFY: Moving phones knob changes volume of headphones. FAIL If no change in volume
9. Move Direct knob to the Middle.
VERIFY: Direct in left ear and 220HZ and 440HZ tones in both ears.
8. Move Direct knob to IN.
VERIFY: Direct signal is in the left ear and 220HZ and 440HZ tones are not heard.
9. Move MONO / STEREO Switch to MONO.
VERIFY: Audio know comes out of both sides of the headphone. If not FAIL.
VERIFY: Gain knob increases volume when moved to the right and decreases volume if moved to the
VERIFY: MIC/LINE switch increases volume when set to GUITAR and decreases at MIC/LINE
10. Put Insert cable in CH 1 Insert.
VERIFY: Audio Signal is no longer present
11. Remove Insert Cable from CH 1.
6. Unplug Signal generator from CH 1 and plug into CH 2.
7. Move MONO / STEREO Switch to STEREO.
VERIFY: Audio signal from the audio signal generator in the Right head phone. ELSE FAIL
8. Move MONO / STEREO Switch to MONO.
VERIFY: Audio now comes out of both sides of the headphone. If not FAIL.
VERIFY: Gain knob increases volume when moved to the right and decreases volume if moved to the
VERIFY: MIC/LINE switch increases volume when set to GUITAR and decreases at MIC/LINE
9. Put Insert cable in CH 2 Insert.
left. If not FAIL
left. If not FAIL
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