Nokia RM-506 Service Manual page 120

Loop test
AV Mic to AV HS_MIC &
Earpiece GND
AV Mic to HP HS_MIC &
Earpiece GND
HP Mic to AV Acoustical
Earpiece input, 1kHz
sine wave
External Mic in HS_MIC &
Internal GND
handsfree out
Measurement data
Earpiece signal
Figure 38 Single-ended output waveform of the AV Mic to HP Ear measurement when earpiece is connected.
Integrated handsfree signal
Page 3 –66
Input Output
terminal terminal
HS_EAR_L &
GND
HS_EAR_R &
GND
EarP & GND
EarN & GND
HS_EAR_L &
GND
HS_EAR_R &
GND
B2153
B400
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BB Troubleshooting and Manual Tuning Guide
Path Input Output
gain voltage voltage
[dB] [mVp- [mVp-p]
(fixed) p]
100
100
NA 94 dB 100
SPL
1000
RM-505; RM-506
Output Output
DC level current [mA]
[V]
1.2 NA
1.2 NA
NA
Issue 1