Zte MF28G Service Manual
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Zte MF28G Service Manual

Lte modem
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See also: Quick Manual
MF28G LTE Modem
After-sales Service Manual (Level 1)
for Sweden H3G
Version 1.0

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Summary of Contents for Zte MF28G

  • Page 1 MF28G LTE Modem After-sales Service Manual (Level 1) for Sweden H3G Version 1.0...

  • Page 2: Legal Information

    ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applica- tions 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.

  • Page 3: Table Of Contents

    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 Page 1 of 48 ZTE Confidential...
  • Page 4 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 Page 2 of 48 ZTE Confidential...

  • Page 5: Product Summary

    Power adapter: 12V � 4 RJ45 interfaces � 2 RJ11 interfaces � USB 2.0 � 1.4 Main Functions Support high-speed wireless data. � Support PSTN phone and VOIP phone. � Support connecting to WAN. � Page 1 of 48 ZTE Confidential...
  • Page 6 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. � Page 2 of 48 ZTE Confidential...

  • Page 7: Function Test

    If there is no fault after you finish test, the modem is an NFF modem. Conclu- Note: refer to User Manual for the items that sion the above three steps can not test. Page 3 of 48 ZTE Confidential...

  • Page 8: Web Ui Test

    We use the USIM card of China mobile operator to do the test, for refer- � ence only. Steps Insert power adapter into modem, and switch on modem. Connect modem and computer with ethernet cable. Page 4 of 48 ZTE Confidential...
  • Page 9 Enter. The following interface will appear. Input password, and click Login to login. Note: The default password is admin. After you login successfully, the main page is as follows. Page 5 of 48 ZTE Confidential...

  • Page 10: Connect Internet

    --End of steps.-- 2.2.2 Connect Internet Steps If the modem odes not connect the Internet automatically, click Connect to connect Internet. --End of steps.-- Page 6 of 48 ZTE Confidential...

  • Page 11: Operation Mode

    --End of steps.-- 2.2.4 WAN Connection Steps Click WAN Connection to enter WAN connection interface. You can set the WAN connection mode and APN about the modem. Page 7 of 48 ZTE Confidential...

  • Page 12: Voip Settings

    --End of steps.-- 2.2.5 VoIP Settings Steps Click VoIP Settings to VoIP settings interface. You can set VoIP phone about the modem. --End of steps.-- Page 8 of 48 ZTE Confidential...

  • Page 13: Settings

    You can make settings about the modem. --End of steps.-- 2.2.7 Status Steps Click Status to enter modem status interface. You can check basic status and network status about the modem. Page 9 of 48 ZTE Confidential...
  • Page 14 --End of steps.-- Page 10 of 48 ZTE Confidential...

  • Page 15: Download And Unlocking

    Make sure that the adapter can be switched on normally before down- � loading software. Otherwise it may fail to do software download. Set your computer’s IP address, subnet mask and default gateway before � downloading. Page 11 of 48 ZTE Confidential...

  • Page 16: Set Ip Address

    � ing on failure. The download process lasts about 6 minutes. � 3.2 Set IP Address Steps Right click My Network Places icon and select Properties. Right-click Local Area Connection icon and select Properties. Page 12 of 48 ZTE Confidential...
  • Page 17 Select Internet Protocol (TCP/IP) and click Properties. Set the IP address and subnet mask, click OK. Note: The IP address should be in 192.168.1.2~192.168.1.255 . Page 13 of 48 ZTE Confidential...
  • Page 18 Click to save settings and quit. --End of steps.-- Page 14 of 48 ZTE Confidential...

  • Page 19: Install Download Platform

    Prerequisite Do not interrupt download process. Such interruption may cause switch- � ing on failure. Steps 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. Page 15 of 48 ZTE Confidential...
  • Page 20 Connect modem and computer with ethernet cable. Double-click the shortcut icon. Click OK. Set the IP as 2.2.2.2. The main interface is as follows. Click Version path to select software version file. Select the correct file and click OK. Page 16 of 48 ZTE Confidential...
  • Page 21 Click OK. Click to close download platform. Double-click the shortcut icon. Set the IP as 192.168.1.1. Page 17 of 48 ZTE Confidential...
  • Page 22 The interface is as follows. When the update information displays Con- nect, click Download to start the download process. Downloading software. Download successfully, click OK. Page 18 of 48 ZTE Confidential...

  • Page 23: Export Download Information File

    All download information will be deleted after you export SDI file. There- � fore, we strongly recommend that you export CSV file before SDI file. Steps Click [Options® ® ® CSV File] to export CSV file. Page 19 of 48 ZTE Confidential...
  • Page 24 Select the saving directory and click Save. Save successfully, click OK. Click [Options® ® ® SDI File] to export SDI file. Page 20 of 48 ZTE Confidential...
  • Page 25 Read the warning and click Yes. Select the saving directory and click Save. Save successfully, click OK. --End of steps.-- Page 21 of 48 ZTE Confidential...
  • Page 26 Page 22 of 48 ZTE Confidential...

  • Page 27: Disassembly

    4 Disassembly 4.1 Disassembly Tools 4.2 Exploded View Page 23 of 48 ZTE Confidential...

  • Page 28: Disassembly Flow Chart

    Name Front Cover Anti-disassembly Label Radiator Foot Mat Mainboard Screw Main Antenna Base Bottom Cover LET Module Board Base Upper Cover Sub-antenna Anti-counterfeit Label Back Cover WiFi Antenna Screw Plug 4.3 Disassembly Flow Chart Page 24 of 48 ZTE Confidential...

  • Page 29: Disassembly Steps

    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 The product overview is as follows. Take down the USB cap. The disassembled USB cap is as follows. Page 25 of 48 ZTE Confidential...
  • Page 30 Screw off the four screws with screwdriver. Separate the front cover and back cover with disassemble housing tool. Pay attention to the locks between front cover and back cover when as- sembling. Page 26 of 48 ZTE Confidential...
  • Page 31 The separated front cover and back cover are as follows. Screw off the seven screws with screwdriver. Page 27 of 48 ZTE Confidential...
  • Page 32 Take out the WiFi antennas with tweezers. Separate mainboard and back cover. Loosen the WiFi antenna cable connectors, and take down WiFi antennas. Page 28 of 48 ZTE Confidential...
  • Page 33 The disassembled WiFi antennas are as follows. Take down the radiator. Page 29 of 48 ZTE Confidential...
  • Page 34 Loosen the locks of main antennas. Loosen the main antenna cable connectors. Page 30 of 48 ZTE Confidential...
  • Page 35 Take down main antennas. Loosen the RF cable connectors. Page 31 of 48 ZTE Confidential...
  • Page 36 The disassembled RF cables are as follows. Loosen the locks of LTE module board. Take down the LTE module board. --End of steps.-- Page 32 of 48 ZTE Confidential...

  • Page 37: Composing

    4.5 Composing Page 33 of 48 ZTE Confidential...
  • Page 38 Page 34 of 48 ZTE Confidential...

  • Page 39: Principle And Mainboard

    5 Principle and Mainboard 5.1 Principle Block Diagram Page 35 of 48 ZTE Confidential...

  • Page 40: Basic Component Distribution

    5.2 Basic Component Distribution Figure 1 Mainboard Top Overview Figure 2 Mainboard Bottom Overview Page 36 of 48 ZTE Confidential...

  • Page 41: Pcb Layout

    5.3 PCB Layout Figure 3 Mainboard PCB Top View Figure 4 Mainboard PCB Bottom View Page 37 of 48 ZTE Confidential...
  • Page 42 Page 38 of 48 ZTE Confidential...

  • Page 43: Troubleshooting

    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 Page 39 of 48 ZTE Confidential...

  • Page 44: Automatically Switching Off

    6.4 Automatically Switching Off 6.5 Abnormal Indicating Light Page 40 of 48 ZTE Confidential...

  • Page 45: Usim Card Unidentified

    6.6 USIM Card Unidentified 6.7 Download Failure Page 41 of 48 ZTE Confidential...

  • Page 46: Wan Connection Failure

    6.8 WAN Connection Failure 6.9 Wi-Fi Failure Page 42 of 48 ZTE Confidential...

  • Page 47: No Signal

    6.10 No Signal Page 43 of 48 ZTE Confidential...
  • Page 48 Page 44 of 48 ZTE Confidential...

  • Page 49: Appendix

    7 Appendix 7.1 After-Sales Technical Support Website Prerequisite 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 man- �...
  • Page 50 The login progress is displayed. Please wait. In the main window of the handsets after-sales support center, click Download Center. Page 46 of 48 ZTE Confidential...
  • Page 51 Click the items to get the corresponding software, technical material and training document. --End of steps.-- Page 47 of 48 ZTE Confidential...
  • Page 52 dfdgfdsgs...

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