Principles And Failure Analysis; Working Principles Of The Mediapad 10 Fhd - Huawei MediaPad 10 fhd Maintenance Manual

MediaPad10 FHD Maintenance Manual INTERNAL
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Principles and Failure Analysis

4.1 Working Principles of the MediaPad 10 FHD

The MediaPad 10 FHD consists of a PCBA, a small I/O board, and a small headset board.
The PCBA is designed based on a combination of the AP (Hisilicon K3V200) and the Balong
V7 modem. The BCM4330 solution developed by Broadcom is used for the Wi-Fi and
Bluetooth modules. The GPS implements the functions of both the AGPS and the GLONESS.
Currently, the GPS can already provide basic functions but temporarily there is no specific
test specification for it. The BCM47511 solution launched by Broadcom is applied to the GPS.
The MediaPad 10 FHD uses the K3V200 system, to which the modem Balong V7, BCM4330,
BCM47511, and other subsystems are attached. There is an independent storage module for
both the AP and the modem. The 16 Gbit LP DDR RAM provides a memory unit for the AP
program. System and application programs are stored in a large-capacity eMMC. The modem
module has an independent storage unit and memory to store related data and guarantee its
normal operations. An independent PMU is designed for both the AP and the modem to
separately supply power to them. That is, the power management IC Hi6421 supplies power
to the AP, and the power management IC Hi6451 supplies power to the modem. When a
power-on event is triggered, the power management IC Hi6421 is powered on first. After the
AP system is started, the power-on process starts on the Hi6451 so that the modem system is
started.
Figure 4-1 shows the functional blocks of the PCBA.
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