Nokia N900 Service Manual page 82

Loop test Input
terminal
External HS_MIC &
headset GND
mic to IHF
mono
Internal Acoustica
digital l Input,
micropho 1kHz sine
ne to wave
headset
Page 3 –36
Output Path gain
terminal [dB]
(fixed)
L4855 & 10
L4856
L4857 &
L4858
HS_L & NA
GND
HS_R &
GND
COMPANY CONFIDENTIAL
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Input Output DC
voltage level [V]
[mVp-p]
200
94 dBSPL
BB Troubleshooting
Output
voltage
[mVp-p]
630
70
RX-51
Issue 1