Layout Of Components On Main Board; List Of Components On Main Board - Huawei U9200 Maintenance Manual

4 Layout of Components on the Main Board
Figure 4-1 shows the U9200's main board components.
Figure 4-1 U9200's PCBA components
J1500, headset jack
Failure symptom: headset failure
U2401, LED control chip
Failure symptom: triple color
LED
U3104, 3.3 V LDO
Failure symptom: MHL failure
U3169, phase inverter
Failure symptom: MHL failure
MIC1402, secondary MIC
Failure symptom: background
noise
U3699, GPS low noise amplifier
Failure symptom: GPS failure
Z3601, Z3602, GPS filter
Failure symptom: GPS failure
U3601, GPS chip
Failure symptom: GPS failure
TCXO3601, GPS crystal
oscillator
Failure symptom: GPS failure
U3201, 2.85 V DCDC
Failure symptom: power-on
failure
U3101, MHL chip
Failure symptom: MHL failure
U3103, level shifter
chip
Failure symptom:
MHL failure
J3503, J3504, antenna clip
Failure symptom: poor
Wi-Fi/Bluetooth signal
J2201, FPC connector
Failure symptom:
power-on, side button, and
flashlight failure
U3259, DC-DC
Failure symptom: rear
camera failure
X900, crystal (32 KHz）
Failure symptom: power-on
failure
U1301, energy meter
Failure symptom: power-on and
charging failure
U901, power management chip
Failure symptom: power-on
failure
J1301, battery connector
Failure symptom: power-on and
charging failure
U1800, flashlight control chip
Failure symptom: unexpected
flashlight problems
U902, DC-DC
Failure symptom: power-on
failure
4.1 List of Components on the Main Board
Table 4-1 lists the U9200's main board components.
(2012-06-13)
U9200 Maintenance Manual
J1402, FPC connector
Failure symptom: unexpected
problems of triple color LED/light
sensor
J1900, IO connector
Failure symptom: unexpected
problems of USB/MHL/charging
U3102, analog switch
J1102, EMMC
Failure symptom: USB
Failure symptom:
and MHL failure
power-on failure
J2102, SIM card U401, Gate
connector Failure symptom:
Failure symptom: unexpected CP
unexpected problems of problems, power-on
SIM card failure
U4708, crystal oscillator (26 MHz)
Failure symptom: call
establishment failure
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J1801, front camera U1897, U1898, U1899,
connector switch
Failure symptom: Failure symptom:
unexpected problems of unexpected camera
front camera problems
U301/U301_POP,
VCXO900, primary
AP+DDR2
crystal oscillator
Failure symptom:
Failure symptom:
power-on failure power-on failure
U1900, switch J1800, camera
Failure symptom: connector
unexpected USB Failure symptom:
problems, power-on rear camera failure
failure
J4710, RF connector
J2202, primary FPC connector
Failure symptom: call
Failure symptom: call establishment failure,
establishment failure
unexpected problems of the speaker, motor, and
capacitive buttons
INTERNAL
U2003, gyroscope chip
Failure symptom: gyroscope failure
U2004, acceleration sensor chip
Failure symptom: accelerometer
failure
U2005, COMPASS chip
Failure symptom: compass failure
J3505, Wi-Fi/Bluetooth antenna clip
Failure symptom: Wi-Fi/Bluetooth
failure
U3401, Wi-Fi/Bluetooth/FM chip
Failure symptom: Wi-Fi/Bluetooth/FM
failure
U3501, Wi-Fi/Bluetooth switch
Failure symptom: Wi-Fi/Bluetooth
failure
Z3599, Wi-Fi/Bluetooth filter
Failure symptom: Wi-Fi/Bluetooth
failure
Q1901, discharging MOS
transistor
Failure symptom: power-on
failure
U1901, charging chip
Failure symptom: charging failure
and power-on failure
U1201, CODEC chip
Failure symptom: audio playback
failure
U501, clock buffering J2101, microSD card
chip socket
Failure symptom: Failure symptom:
power-on failure microSD card
identification failure
X2601, crystal (32 KHz)
Failure symptom: call establishment
failure
U3801, MODEM chip
Failure symptom: call establishment
failure
J3602, J3603, antenna clip
Failure symptom: poor GPS signal
U2601, MODEM MCP
Failure symptom: call establishment
failure
U4701, RF transceiver
Failure symptom: call establishment
failure
U4702, RF duplexer
Failure symptom: call establishment
failure
U4704, RF PA
Failure symptom: call establishment
failure,
Wi-Fi/Bluetooth/RF failure
J1602, AMOLED connector
Failure symptom: unexpected
problems of the display and
touchscreen,
Power-on failure, and software
problems
U4802, RF DCDC
Failure symptom: call establishment
failure
U4703, RF switch
Failure symptom: call establishment
failure
U4801, RF DCDC
Failure symptom: call establishment
failure
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