Page of 208
Download Table of ContentsContents Print This PagePrint Bookmark

Nokia RM-313 Service Manual: Audio Troubleshooting

Hide thumbs
RM-313
BB Troubleshooting and Tuning Guide
Troubleshooting flow

Audio troubleshooting

Audio paths
The earpiece is driven directly by a built-in linear power amplifier included in the EM ASIC N2200 ASIC. The
output has a differential output configuration. Signal lines are biased by the EM ASIC N2200.
The vibra is driven directly by a built-in digital pulse modulated amplifier included in the EM ASIC N2200 ASIC.
The output has a differential output configuration.
Nokia AV stereo output is driven by a discrete stereo headphone amplifier that is connected to the single-
ended outputs of the EM ASIC N2200 ASIC (shared output with the discrete stereo speaker amplifier). The
discrete stereo headphone output has a single-ended ground reference output. It's controlled gain change
via I2C IF.
Issue 1
COMPANY CONFIDENTIAL
Page 3 –63
Copyright © 2007 Nokia. All rights reserved.

This manual also for:

N82, L3, L4

Comments to this Manuals

Symbols: 0
Latest comments:
  • Pavel Kraemer Dec 31, 2016 03:20:
    I cannot find how to switch off front flash on NOKIA 230.
    Pleas​e inform to
    pkraemer@​volny.cz