Pcba Components; Figure 4-1 Pcba Components Diagram 1 - Huawei U8815 Maintenance Manual

U8815
Maintenance Manual
The following figures show the PCBA components.

Figure 4-1 PCBA components diagram 1

Failure caused by
damage to
U1401 acceleration
meter: gravity
induction failure
Failure caused by
damage to
U1402
direction
orientation failure
Failure caused by
damage to
springs of the
J1026, J1205,
and J1204
volume
volume key failure
Failure caused by
damage to
U3202 RF
signal failure
Failure caused by
damage to
U3302 RF gain
module 1920–1980
MHz: signal failure
Issue 1.0 (2012-02-13)
Failures caused by
damage to the U6011
BCM4330: FM, BT,
and Wi-Fi functions
cannot be used.
the
the
compass:
the
keys:
the
switch:
Failure caused by
the
damage to the
U3401 RF gain
module 824–849
MHz: signal failure
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4

PCBA Components

Failure caused by damage to
the J1001 headset connector:
handset function failure
Failure caused by
Failures caused by
damage to the U3501
damage to the
power module: GSM
U4202RF power
transmission failure
module 1850–1910
MHz: no signal,
weak signal, and
registration failure
4 PCBA Components
Failure caused by
damage to the
U3101 19.2 MHz
crystal oscillators:
power-on failure
Failures caused by
damage to the U1700
Flash: power-on failure
and software failure
Failures caused by damage to
the U401 baseband chip and
CPU: power-on failure,
breakdown, and RF failure
6