Table 9-10 Audio Output - Huawei U8815 Maintenance Manual

U8815
Maintenance Manual

Table 9-10 Audio output

Signal
EAR1_AMP_1_OP
EAR1_AMP_1_ON
SPK_OUT_L_P
SPK_OUT_L_M

Failure: After a call is established, no sound can be heard by the other party.
Solution:
Figure 9-40 shows the troubleshooting process for sound failure.
Issue 1.0 (2012-02-13)
Description
The signal is output to the
receiver.
The signal is output to the
receiver.
This signal is output to the
speaker through the power
amplifier.
This signal is output to the
speaker through the power
amplifier.
Troubleshooting process
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9 Principles and Failure Analysis
Reference Measurement or
Wave Form
None
None
None
None
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