Huawei U8815 Maintenance Manual page 9

U8815
Maintenance Manual
Table 1-1 Description of the features ..................................................................................................................... 1
Table 3-1 List of components in the exploded view .............................................................................................. 4
Table 5-1 Upgrade preparation .............................................................................................................................. 9
Table 6-1 List of maintenance tools ..................................................................................................................... 11
Table 9-1 List of voltages converted from VHP_PWR by PM8029 power management chip ............................ 23
Table 9-2 Description of the signals in the circuit diagram in this section .......................................................... 30
Table 9-3 Description of the signals in the circuit diagram in this section .......................................................... 32
Table 9-4 Description of the signals in the circuit diagram in this section .......................................................... 36
Table 9-5 Logic table of the RF switch ................................................................................................................ 38
Table 9-6 Truths for control signals ..................................................................................................................... 42
Table 9-7 Description of the signals in the circuit diagram in this section .......................................................... 43
Table 9-8 Description of the signals in the circuit diagram in this section .......................................................... 47
Table 9-9 Description of the signals in the circuit diagram in this section .......................................................... 49
Table 9-10 Audio output ...................................................................................................................................... 52
Table 9-11 Description of the signals in the circuit diagram in this section ........................................................ 56
Table 9-12 Description of the signals in the circuit diagram in this section ........................................................ 58
Table 9-13 Description of the signals in the circuit diagram in this section ........................................................ 60
Table 9-14 Description of the signals in the circuit diagram in this section ........................................................ 61
Table 9-15 Description of the signals in the circuit diagram in this section ........................................................ 65
Issue 1.0 (2012-02-13) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Tables
Tables
viii