ASUS ZC451CG Troubleshooting Manual

ZC451CG

Board-Level Trouble Shooting Guide

ZC451CG

Board-Level Trouble Shooting Guide

1

System Overview

2

System Function Block Diagram

3

Device Overview

Mic

前置攝像頭

聽筒

Light/P- sensor

後置攝像頭

Flash LED

4

speaker

Main Board Overview (Bottom)

GPS Touch connector

MIC

Headset Connector

Audio

Flash LED

Flash LED
Driver IC

WIFI + BT

Modem

Battery
Connector

SIM2

SIM1 & SD

Power Key

LCD
Connector

Main Board Overview (Top)

G-Sensor

Light & P-Sensor

Rear camera Connector

Front camera Connector

E-Mmc

USB Phy

6

PMIC

SOC

Charge IC

Gauge IC IO-ConnectorSuper CAP

Transceiver IC

RF PA

Modem Memory

PMIC Power-On Sequence

7

PMIC Power Rail Voltage

Power Rail

TYPE

Voltage(V)

VCC

SMPS

0.3-----1.2
VNN

SMPS

0.6-----1.2

VNNAON

SMPS

0.6-----1.2

VCC122AON

SMPS

1.25

V180AON

SMPS

1.8

VCC108AS

LDO

1.8

VCCA100AS

LDO

1.025

8

VCCA100

LDO

1

VCC108AON

LDO

1.08

VCC108

LDO

1.08

VCC180AON

SW EXT

1.8

VCC180

SW

1.8

VCC330

SW

3.3

VCCSDIO

LDO

2.85

VEMMC1

LDO

2.85

VEMMC2

LDO

2.85

VPROG2

LDO

2.8

VPROG1

LDO

1.8

PMIC Power Rail to SOC

9

Modem Power-On Sequence

MODEM_RST_OUT_N

10

Modem PMU Power Rail

11

System Power Tree

12