Nokia RM-509 Service Manual page 96

Loop test
External Mic to
External Earpiece
External Mic to
Internal Earpiece
External Mic to
Internal
handsfree
Page 3 –48
Input Output
terminal terminal
XMICP and HSEAR R
GND and GND
HSEAR L
and GND
XMICN and HSEAR R
GND and GND
HSEAR L
and GND
XMICP and EarP and
GND GND
EarN and
GND
XMICN and EarP and
GND GND
EarN and
GND
XMICP and B2102 pads
GND
XMICN and B2102 pads
GND
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BB Troubleshooting and Manual Tuning Guide
Path Input
gain [dB] voltage
[mVpp]
16.7 100
10.9 100
28.1 100
RM-509; RM-510; RM-511
Output Output
voltage DC level
[mVpp] [V]
680 1.2
353 1.2
2540 0
Output
current
[mA]
NA
NA
112mA
(calc.)
Issue 2