Troubleshooting Level3; Audio Problems; No Speaker Audio - Motorola MotoRAZR maxx V6 Manual

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Title: Troubleshooting-Guide MotoRAZR maxx V6

Troubleshooting Level3

Audio problems

First step on every audio related problem is to identify which audio paths are affected. If
audio signals in loop are ok, there could be an audio problem in a network call. Then it is
most likely a problem with the ARGON – forward to an authorized level 4 service center.

No speaker audio

Check EAR_SP+
offset voltage, if audio loop is switched on, and additional up to 3Vpp at 1 kHz, if test tone is
switched on via RepairStudio/Radiocomm.
- if not: check
- if ok: change ATLAS IC
Repair Support Information
at C2303-1 and EAR_SP-
J2300/C2303/C2304
U3000
Doc. No:
Version:
Date:
Page:
at C2304-1, both should have around 1.5Vdc
and Resistors R4000/R4001
Figure 15
© Copyright 2003-2007 Motorola Inc. All Rights reserved.
Motorola internal use
TSG_3G_V6
1.0
23.07.2007
16 / 40
(both 10 Ohm)