MF28G LTE Modem

After-sales Service Manual (Level 1) for Sweden H3G

Version 1.0

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LEGAL INFORMATION

Copyright © 2009 ZTE CORPORATION.

The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations.

All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners.

This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein.

ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein.

ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice.

Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information.

The ultimate right to interpret this product resides in ZTE CORPORATION.

Revision History

Revision No.

V1.0

Revision Date

2012–08–13

Revision Reason

Edited by ZTE University

Publishing Date: 2012–08–13

1 Product Summary....................................................1

1.1 Product Overview ................................................................. 1

1.2 Standard Configuration.......................................................... 1

1.3 Specifications....................................................................... 1

1.4 Main Functions ..................................................................... 1

2 Function Test...........................................................3

2.1 NFF Test ............................................................................. 3

2.2 Web UI Test ......................................................................... 4

2.2.1 Login.......................................................................... 4

2.2.2 Connect Internet .......................................................... 6

2.2.3 Operation Mode............................................................ 7

2.2.4 WAN Connection........................................................... 7

2.2.5 VoIP Settings ............................................................... 8

2.2.6 Settings ...................................................................... 9

2.2.7 Status ........................................................................ 9

3 Download and Unlocking .......................................11

3.1 Before You Begin ................................................................ 11

3.1.1 Computer and System Requirements ............................. 11

3.1.2 Data Cable ................................................................ 11

3.1.3 Service Software ........................................................ 11

3.1.4 Cautions ................................................................... 11

3.2 Set IP Address ................................................................... 12

3.3 Install Download Platform .................................................... 15

3.4 Download Software ............................................................. 15

3.5 Export Download Information File .......................................... 19

4 Disassembly ..........................................................23

4.1 Disassembly Tools .............................................................. 23

4.2 Exploded View ................................................................... 23

4.3 Disassembly Flow Chart ....................................................... 24

4.4 Disassembly Steps.............................................................. 25

4.5 Composing ........................................................................ 33

5 Principle and Mainboard ........................................35

5.1 Principle Block Diagram ....................................................... 35

5.2 Basic Component Distribution ............................................... 36

5.3 PCB Layout........................................................................ 37

6 Troubleshooting ....................................................39

6.1 Housing Failure .................................................................. 39

6.2 Switching On Failure ........................................................... 39

6.3 Hanging ............................................................................ 39

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6.4 Automatically Switching Off .................................................. 40

6.5 Abnormal Indicating Light .................................................... 40

6.6 USIM Card Unidentified........................................................ 41

6.7 Download Failure ................................................................ 41

6.8 WAN Connection Failure ....................................................... 42

6.9 Wi-Fi Failure ...................................................................... 42

6.10 No Signal ........................................................................ 43

7 Appendix ...............................................................45

7.1 After-Sales Technical Support Website .................................... 45

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1 Product Summary

1.1 Product Overview

Note:

The picture is for reference only, please make the object as standard.

1.2 Standard Configuration

NO.

1

2

3

4

Modem

Power Adapter

Ethernet Cable

Quick User Guide

Name QTY

1

1

1

1

1.3 Specifications

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Frequency band: WCDMA 900/2100MHz, LTE 800/2600MHz

Dimensions: 202mm × 160mm × 30.5mm (Length × Width × Height)

Weight: about 550g

Power adapter: 12V

4 RJ45 interfaces

2 RJ11 interfaces

USB 2.0

1.4 Main Functions

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Support high-speed wireless data.

Support PSTN phone and VOIP phone.

Support connecting to WAN.

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Support 16 WiFi users simultaneously.

Support IE (7.0 and later), Firefox (3.0 and later), Opera (10.0 and later),

Chrome (10.0 and later).

Support Windows XP/Vista/7, MAC, Linux.

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2 Function Test

2.1 NFF Test

Context

NFF Flow

Chart Items Steps and Requirements

1. Check whether the accessories in sales package are complete.

2. The warranty label is not torn or removed.

3. Make sure the modem has no physical damage.

Test Object

(1) Basic requirements

(2) Fault replay

(3) Internet connection test

Conclusion

4. The modem should be still under warranty.

1. Check whether the

LEDs in the front cover are bright.

/

2. Test the reported faults and make sure that the faults do not replay.

Connect the modem to computer and make internet connection setting

(refer to User Manual for details). Open IE browser and check whether you can log on to web site (for the modems with internet connection function only).

Power adapter,

UISM card, ethernet cable

Power adapter,

UISM card, ethernet cable and computer

Test the modem from step (1) to (3). Stop test if you find faults at one step. And the modem is faulty.

If there is no fault after you finish test, the modem is an NFF modem.

Note: refer to User Manual for the items that the above three steps can not test.

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2.2 Web UI Test

2.2.1 Login

Context

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Note:

The modem should be able to be powered on. Otherwise you can not do the function test.

Insert valid USIM card before function test.

Connect the modem with power adapter before function test.

Set your computer’s IP address, subnet mask and default gateway before function test.

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Insert the USIM card provided by local service provider into the modem, otherwise some functions of the modem are unusable.

We use the USIM card of China mobile operator to do the test, for reference only.

Steps

1.

Insert power adapter into modem, and switch on modem.

2.

Connect modem and computer with ethernet cable.

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3.

Open IE and input

http://192.168.1.1

in address field, then click

Enter

.

The following interface will appear.

4.

Input password, and click

Login

to login.

Note:

The default password is

admin

.

5.

After you login successfully, the main page is as follows.

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--End of steps.--

2.2.2 Connect Internet

Steps

1.

If the modem odes not connect the Internet automatically, click

Connect

to connect Internet.

--End of steps.--

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2.2.3 Operation Mode

Steps

1.

Click

Operation Mode

to enter operation mode setting interface. You can set operation mode about the modem.

--End of steps.--

2.2.4 WAN Connection

Steps

1.

Click

WAN Connection

to enter WAN connection interface. You can set the WAN connection mode and APN about the modem.

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--End of steps.--

2.2.5 VoIP Settings

Steps

1.

Click

VoIP Settings

to VoIP settings interface. You can set VoIP phone about the modem.

--End of steps.--

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2.2.6 Settings

Steps

1.

Click

Settings

to enter settings interface. You can make settings about the modem.

--End of steps.--

2.2.7 Status

Steps

1.

Click

Status

to enter modem status interface. You can check basic status and network status about the modem.

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--End of steps.--

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3 Download and Unlocking

3.1 Before You Begin

3.1.1 Computer and System Requirements

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Computer processor: Pentium 500 MHz or higher

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RAM: 128 MB or more

Disk space: 50 MB or more

Supported operating system: Windows 2000/ XP, Vista

3.1.2 Data Cable

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Download with ethernet cable (Material code: 052621200047)

3.1.3 Service Software

Type

Download platform

Software version

Name

SalesDL_MF29TV1.00.

00

00000B0000ZTE_DC_

MF28GV1.0.0

Description

The platform version is for reference only. Use the latest version to do software download.

The software version is for reference only. Use the latest version to do software download.

3.1.4 Cautions

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Be sure to update the software version of each faulty adapter to the latest one.

Make sure that the adapter can be switched on normally before downloading software. Otherwise it may fail to do software download.

Set your computer’s IP address, subnet mask and default gateway before downloading.

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The software version and download platform software in the document are for reference only. Use the latest version to do software download.

Do not interrupt download process. Such interruption may cause switching on failure.

The download process lasts about 6 minutes.

3.2 Set IP Address

Steps

1.

Right click

My Network Places

icon and select

Properties

.

2.

Right-click

Local Area Connection

icon and select

Properties

.

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3.

Select

Internet Protocol (TCP/IP)

and click

Properties

.

4.

Set the IP address and subnet mask, click

OK

.

Note:

The IP address should be in 192.168.1.2~192.168.1.255 .

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5.

Click

OK

to save settings and quit.

--End of steps.--

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3.3 Install Download Platform

Steps

1.

Double-click the download platform software icon to install.

2.

The shortcut icon will appear on system desktop after installation.

--End of steps.--

3.4 Download Software

Prerequisite

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Do not interrupt download process. Such interruption may cause switching on failure.

Steps

1.

Copy the file

root_uImage

in file folder [

CR_MF28G_HI3G_SEV1.0.0

B09®

6.CPE

] to the software file folder

BD_MF28GH3GV1.0.0B04

.

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2.

Insert power adapter into modem, and switch on modem.

3.

Connect modem and computer with ethernet cable.

4.

Double-click the shortcut icon.

5.

Click

OK

.

6.

Set the IP as

2.2.2.2

.

7.

The main interface is as follows. Click

Version path

to select software version file.

8.

Select the correct file and click

OK

.

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9.

Click

OK

.

10.

Click to close download platform.

11.

Double-click the shortcut icon.

12.

Set the IP as

192.168.1.1

.

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13.

The interface is as follows. When the update information displays

Connect

, click

Download

to start the download process.

14.

Downloading software.

15.

Download successfully, click

OK

.

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16.

Click

OK

.

--End of steps.--

3.5 Export Download Information File

Prerequisite

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You can export download information file after successful software download.

All download information will be deleted after you export SDI file. Therefore, we strongly recommend that you export CSV file before SDI file.

Steps

1.

Click [

®

CSV File

] to export CSV file.

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2.

Select the saving directory and click

Save

.

3.

Save successfully, click

OK

.

4.

Click [ ®

SDI File

] to export SDI file.

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5.

Read the warning and click

Yes

.

6.

Select the saving directory and click

Save

.

7.

Save successfully, click

OK

.

--End of steps.--

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4 Disassembly

4.1 Disassembly Tools

4.2 Exploded View

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7

8

5

6

3

4

1

2

NO.

Name

Front Cover

Radiator

Mainboard

Main Antenna

LET Module Board

Sub-antenna

Back Cover

Screw Plug

12

13

14

15

16

9

NO.

10

11

Name

Anti-disassembly Label

Foot Mat

Screw

Base Bottom Cover

Base Upper Cover

Anti-counterfeit Label

WiFi Antenna

4.3 Disassembly Flow Chart

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4.4 Disassembly Steps

Context

Note:

The modem logo vary from country to country. We use this modem as an example in this document, the pictures are for reference only.

Steps

1.

The product overview is as follows.

2.

Take down the USB cap.

3.

The disassembled USB cap is as follows.

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4.

Screw off the four screws with screwdriver.

5.

Separate the front cover and back cover with disassemble housing tool.

6.

Pay attention to the locks between front cover and back cover when assembling.

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7.

The separated front cover and back cover are as follows.

8.

Screw off the seven screws with screwdriver.

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9.

Take out the WiFi antennas with tweezers.

10.

Separate mainboard and back cover.

11.

Loosen the WiFi antenna cable connectors, and take down WiFi antennas.

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12.

The disassembled WiFi antennas are as follows.

13.

Take down the radiator.

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14.

Loosen the locks of main antennas.

15.

Loosen the main antenna cable connectors.

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16.

Take down main antennas.

17.

Loosen the RF cable connectors.

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18.

The disassembled RF cables are as follows.

19.

Loosen the locks of LTE module board.

20.

Take down the LTE module board.

--End of steps.--

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4.5 Composing

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5 Principle and Mainboard

5.1 Principle Block Diagram

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5.2 Basic Component Distribution

Figure 1 Mainboard Top Overview

Figure 2 Mainboard Bottom Overview

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5.3 PCB Layout

Figure 3 Mainboard PCB Top View

Figure 4 Mainboard PCB Bottom View

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6 Troubleshooting

6.1 Housing Failure

For the housing failure, make the corresponding replacement according to

4.4 Disassembly Steps

.

6.2 Switching On Failure

6.3 Hanging

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6.4 Automatically Switching Off

6.5 Abnormal Indicating Light

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6.6 USIM Card Unidentified

6.7 Download Failure

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6.8 WAN Connection Failure

6.9 Wi-Fi Failure

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6.10 No Signal

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7 Appendix

7.1 After-Sales Technical Support Website

Prerequisite

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If you have any questions about ZTE handset repair, you can ask for help through the technical forum. Our technical support engineers will give you a reply within 24 hours.

For technical documents such as the training document and repair manual, you can download from this website too.

If you have any suggestion, please provide your suggestion to us through the technical forum. This will help us to better meet your needs.

Home page:

http://support.zte.com.cn/mobile

.

Steps

1.

Input

http://support.zte.com.cn/mobile

in the address bar and press

Enter

.

2.

Input

Email/Login account

,

Password

and

Check code

, and click

Login

.

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3.

The login progress is displayed. Please wait.

4.

In the main window of the handsets after-sales support center, click

Download Center

.

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5.

Click the items to get the corresponding software, technical material and training document.

--End of steps.--

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