EDGE U0-6 Simplified Maintenance Manual
10 Troubleshooting
Issue 1.0 (2013-01-12)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
61
Figure 10-14
Critical part for receiver failures
10.7 Microphone Failure
Figure 10-15
Troubleshooting microphone failures
Microphone failure
Are the microphone and
microphone sub-board
properly functioning?
N
Replace the
microphone or
microphone sub-
board
Y
Are the related signal
circuits properly functioning?
N
Exclude the
microphone sub-
board, FPC, and
related signal
circuit faults
Y
Replace the PCBA