U9200 Maintenance Manual
INTERNAL
(2012-06-13)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Page 79 of 80
No. Item
Test Method and Procedure
13
Phone
loopback test
Primary microphone test: Touch the Record button on the
touchscreen, speak towards the primary microphone, and then
touch the Play icon. You can hear the recorded sound from the
receiver.
Secondary microphone test: Touch the Record icon on the
touchscreen, speak towards the secondary microphone, and then
touch the Play button. You can hear the recorded sound from the
receiver.
Double microphone loopback test: Touch the Record icon on the
touchscreen, speak towards both the primary and secondary
microphones, and then touch the Play button. You can hear the
recorded sound from the receiver.
14
Headset
loopback test
Insert the headset, touch the Record button, speak towards the
headset microphone, and touch the Play button. You can hear the
recorded sound from the headset receiver.
15
FM test
After the headset is inserted, the LCD displays the channels
available. The FM plays the contents on frequency bands 8800,
9800, and 10700. The button in the lower left corner is used to
switch between channels.
This test requires you to check whether the FM functions properly.
16
Headset
controller test
After the headset is inserted, the In icon turns green. Press the
answer key on the headset, and the large cycle on the LCD turns to
a small one as its color turns from blue to brown. Pull out the
headset. If the Out icon also turns green, the test is successful.
17
HDMI test
The LCD indicates that the phone is under the HDMI test. Use a
USB cable to connect the phone to a high definition television.
Check whether the video and audio can be transmitted to the
television. If they cannot, touch the Menu key; if they can, press
the volume down key to proceed to the next test.
18
Bluetooth test
The phone starts to search for Bluetooth devices and displays the
names and MAC addresses of the Bluetooth devices found. (Note:
To perform this test, another phone with Bluetooth enabled is
required.)
19
Gravity sensor
test
Place the phone in the direction displayed on the LCD. When all
the icons on the LCD are marked with a √, the test is passed.
20
Gyroscope and
compass test
The phone performs the gyroscope and compass test in the
background. If the test is successful, the phone will directly
proceed to the next test without displaying any messages. If the
test fails, the LCD displays the error information.
21
Wi-Fi test
The phone automatically searches for available Wi-Fi networks.
22
SIM card test
The phone starts the SIM card detection. If the SIM card fails to
be detected, the LCD displays the error information. Press the
volume down key to enter the next test. If the SIM card is
detected, the system automatically proceeds to the next test.
