Nokia 6310i - Bluetooth; Connecting and Managing Bluetooth Devices

PAMS Technical Documentation 3 - Audio System
NPL-1
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Front Holes on A-Cover
Leakage Holes on A_Cover
Leakage Holes on PCB
Opening Between
Earpiece and PCB
Back Volume
Earpiece Front Volume
Leakage Holes on PCB
Shielding material glued to A cover or IMD Window
Leakage Between A_ and B_Covers
(Not well defined)
Figure 2. Sketch of Earpiece Acoustic Design