NLLW contains two parts:
- NLLW unit it's meanns Top cover and motherboard and bottom cover
- SPK-MIC panel - this panel is possible by screews mechanicaly fixed
with NLLW unit
Version A makes it possible connect three SPK-MIC panels.
The lift cabin panel should be equiped by acoustic holes in microphone as
same as speaker part. It should be also provides by 4 screws M4 for fixing the
SPK-MIC panel. The proper mechanical installation essentially influence
acoustic parametres of the unit. Particularly microphone and speaker should be
fixed tightly to acoustic holes in panel.
Attention
: microphone has polarity- red is + !!!