Acer HARLEY TAB A3-A20 User manual

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1

HARLEY TAB A3-A20/A3-A20FHD

SERVICE GUIDE

i

Table of Contents

Chapter 1 Product Features and Hardware Specifications

Features………………………………………………….…………………………..……....…1-3

Tablet Tour…………………………………………………………………………….……......…4

Front View………………………………………………………………………….…...5

Rear View………………………………………………………………………….……6

Top View………………………………………………………………………….….….7

Bottom View………………………………………………………………………...….8

Left View……………………………………………………………………….……..…9

Right View……………………………………………………..……………...…...….10

System Block Diagram……………………………………………………………………..…..11

Chapter 2 Diagnostic Utilities

Introduction………………………………………………………………...………………….…12

Flash Tool SOP…………………………………………………………….........................12-18

Writing Tool SOP……………………………………………………………………............19-32

Re-write Country Code SOP………………………...…………………………………………33

How to Check Wifi Channel………………………………………………………………..34-38

Chapter 3 Service and Maintenance

Introduction……………………………………………………………………………….…..….39

Disassembly and Assembly Guide…………………………………………………..........39-51

L2 Troubleshooting Guide………………………………………………………….……....52-62

Chapter 4 Diagnostic Tool SOP

Index…………………………………………………………………………………………..….64

Introduction and Installation Method…………………………………………...……..…..65-66

Test Items and Function Description…………………………………………..……….....67-69

Operational Methods of Test Items……………………………………………………………69

Test Content Description……………………………………………………………...........70-88

Chapter 5 Serial Number Definition

Introduction of Acer FG SN…………………………………………………………...……89-96

Introduction of Acer KC PN and Acer KC SN……………………………………….........97-98

Chapter 6 FRU (Field Replaceable Unit) List

Exploded Diagram………………………………………………………………..………100-102

FRU List………………………………………………………………………………..….103-104

ii

Revision History

Please refer to the table below for the updates made on this service guide.

Date

Chapter

Update

Copyright

Copyright 2014 byAcer Incorporated. All rights reserved. No part of this publication may be

reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any

language or computer language, in any form or by any means, electronic, mechanical, magnetic,

optical, chemical, manual or otherwise, without the prior written permission of Acer

Incorporated.

Disclaimer

The information in this guide is subject to change without notice.

Acer Incorporated makes no representatives or warranties, either expressed or implied,

with respect to the contents hereof and specifically any warranties of merchantability or fitness

for any particular purpose. Any Acer Incorporated software described in this manual is sold or

licensed ―as is‖. Should the program prove defective following their purchase, the buyer (and

not Acer Incorporated, its distributor, or its dealer) assumes the entire cost of all necessary

servicing, repair, and any incidental or consequential damages resulting from any defect in the

software.

Acer is a registered trademark of Acer Corporation.

Other brand and product names are trademarks and/or registered trademarks of their

respective holders.

iii

General Information

This Service Guide provides you with all technical information relating to the basic

configuration for Acer’s global product offering. To better fit local market requirement and

enhance product competitiveness, your regional office may have decided to extend the

functionality of a machine (e.g. add-on card, modem, or extra memory capabilities). These

localized features are not covered in this generic service guide. In such cases, contact your

regional offices or the responsible personnel/channel to provide you with further technical

details.

When ordering FRU parts:

Check the most up-to-date information available on your regional web or channel. If, for

whatever reason, a part number change is made, it may not be noted in this printed service

guide.

For Acer-authorized service providers:

Your Acer office may have a different part number code than those given in the FRU list of

this printed service guide. The list provided by your regional Acer office must be used to order

FRU parts for repair and service of customer machines.

CHAPTER 1

Product Features and Hardware Specifications

Product Features and Hardware Specifications

Features………………………………………………….……………………..……….………1-2

Tablet Tour…………………………………………………………………………………..…….3

Front View………………………………………………………………………..….....4

Rear View………………………………………………………………………………5

Top View…………………………………………………………………………….….6

Bottom View………………………………………………………………………...….7

Left View……………………………………………………………………………..…8

Right View………………………………………………………………………..…….9

System Block Diagram………………………………………………………………….……...10

1

Product Features and Hardware Specifications

Features

Following is a summary of the tablet’s main features:

Harley Quick Spec.

Category

Specification & Requirements

Form Factor

10.1‖ Tablet

Operating system

Android KitKat system (4.4)

Dimensions and weight

Dimension

256 (L) x 171.1 (W) x 8.99 (T) mm

Weight

WIFI HD SKU < 540 g

CPU

HD SKU: MTK MT8127 (MT8127A/B) Quad Cortex A7@1.3GHz , Mali450 MP4

Memory

HD SKU: RAM- DDR3L 1GB,

LCM

10.1‖ HD, 16:10 LCM (1280(H) x 800(V)), TFT panel

LED backlight, IPS

Wide view angle 85/85/85/85 degree

MIPI interface

Active Area : 216.96 (H) x 135.6 (V) [mm]

TTL Solution brightness: (TBD) nits (LCD: 350 nits)

Contrast ratio 800:1

Storage

HD SKU:, eMMC-16GB/32GB

GPS

Standalone GPS without GLONASS

Camera

Front camera : 2MP Camera with Fix Focus

Preview 30 fps@ 800x600

Photo capture at 24fps @ 1600x1200 in JPEG

Video capture recording at 30fps @ VGA

Rear camera : 5MP Camera with Auto Focus

Preview 30fps(15 fps)@ 2560x1920

Photo capture at 30fps(15 fps) @ 2560x1920 in JPEG

2

Harley Quick Spec.

Category

Specification & Requirements

Connectivity

Bluetooth® 4.0

Wi-Fi IEEE 802.11 b/g/n

HDMI 1 x Micro HDMI, support HDCP 1.0

USB

x Micro USB 2.0 Type B port, support OTG

BT profile support

BT Protocol & Low Layer BT Profile

RF / RFPHY / BB / LMP / LL / L2CAP / SDP / GAP / RFComm / ATT /

GATT / SM /AVCTP / AVDTP / GAVDP

High Layer BT Profile

A2DP /AVRCP / DI (DID) / HID / HOGP / OPP / SPP

Other

IOP

Input

Touch Sensor

GFF touch sensor.

Touch sensor AA area covers 1.2mm outside LCM AA area.

Touch Controller

Goodix GT9110 , 10-point touch controller IC

Minimum 100 valid touch points per second at 1-point touch touch

scenario.

Minimum 60 valid touch points per second at 10-point touch scenario.

Function buttons

Side (mechanical key):

-Volume Up, Volume Down

-Power: Indicator with orange back light, power-on when charging

Sensors

G-Sensor

Output

NA

Audio

Single Analog Microphone

2 Speaker

3.5mm Audio Jack 4-ring (with Mic)

Expansion Slot

Support MicroSD memory card push push type

Battery

Rechargeable Lithium-ion polymer battery

Capacity: 21.6W (4700 mAh cell , 1S2P)

Battery-life (TBD)

Video playback: up to 7 hours when play 720P H.264 video playback on

system (not streaming, Wifi/3G/BT off, total solution 150 nits)

Stand-by on fly mode: up to (TBC) hours (LCD off)

AC Adapter

Voltage range/frequency: 100 ~ 240V AC, 50/60Hz

DC output: 5V and 2A, 10W

Cable length of adapter is with 100cm

Black color

3

Harley Quick Spec.

Category

Specification & Requirements

Green requirement

Rohs compliance

WEEE compliance

Hologen free, at least PVC free

SMT Green process

Others

Reset hole

Accessory (in Box)

Charger + Plug

4

Tablet Tour

Six View

5

Front View

Figure 1.1 Front View

#

Item

Description

1

Touch Screen

CTP

2

Front Camera

Front Camera_6*6*4.2_200W_HI257_FF_ZIF connector

1

2