Nokia 6120 classic Service Manual page 78

Loop test
External Mic to HS_MIC &
External GND
Earpiece
External Mic to HS_MIC &
Internal GND
Earpiece
External Mic to HS_MIC &
Internal GND
handsfree
Digital Mic to Acoustical
External input, 1kHz
Earpiece sine wave
Measurement data
Earpiece signal
Figure 15 Single-ended output waveform of the Ext_in_HP_out measurement when earpiece is connected.
Integrated handsfree signal
Page 3 –34
Input Output
terminal terminal
HS_EAR_L &
GND
HS_EAR_R &
GND
EarP & GND
EarN & GND
J2100
J2101
HS_EAR_L &
GND
HS_EAR_R &
GND
COMPANY CONFIDENTIAL
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BB Troubleshooting and Manual Tuning Guide
Path Input Output
gain voltage voltage
[dB] [mVp- [mVp-p]
(fixed) p]
-8.6 1000 367
-10 1000 310
-6 1000
NA 94 dB 100
SPL
RM-243
Output Output
DC level current [mA]
[V]
1.2 NA
1.2 NA
NA
Issue 1