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Acer B1-720 Service Manual

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B1-720
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Summary of Contents for Acer B1-720

  • Page 1 B1-720 S E R V I C E G U I D E...

  • Page 2: Table Of Contents

    Table of Contents Chapter 1. Hardware Specifications and Configurations Features ............1-2 Tablet Tour .
  • Page 3 B1-720 ........

  • Page 4: Revision History

    First release Copyright Copyright © 2013 by Acer 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.
  • Page 5 Conventions The following conventions are used in this manual: WARNING: Indicates a potential for personal injury. CAUTION: Indicates a potential loss of data or damage to equipment. IMPORTANT: Indicates information that is important to know for the proper completion of a procedure, choice of an option, or completing a task.
  • Page 6 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...
  • Page 7 CHAPTER Hardware Specifications and Configurations Hardware Specifications and Configurations ....1-2 Features ............1-2 Tablet Tour .

  • Page 8: Chapter 1. Hardware Specifications And Configurations

    Hardware Specifications and Configurations Features The following is a summary of the computer’s many features: Form Factor • 7” Tablet Operating System • Android Jelly Bean 4.2 Platform • MTK MT8111 Dual Core Cortex A7 1.3 GHz processor System Memory •...

  • Page 9: Expansion Slot

    CIFC01920004970LH (0.3M) • Image Sensor : OV7675 • Output format: YUV4:2:2 / YCbCr422, raw RGB, ITU656, RGB565 • Image capture at 30fps @ VGA 640 x 480 • Video capture at 30fps @ VGA 640 x 480 Connectivity WLAN • IEEE 802.11 b/g/n Bluetooth ®...

  • Page 10: Dimensions And Weight

     40 g, without DC cable  Fixed AC pins  Others (SW) • Top HD Games Portal • Acer Portal (AcerCloud) • Google Mobile Services (except China region) Green Requirement • Rohs compliance • WEEE compliance • SMT Green process...

  • Page 11: Tablet Tour

    Tablet Tour Front View Figure 1-1. Front View Table 1-1. Front View Item Description Microphone Receives audio input. Speaker Emits stereo audio. Touch Screen 7-inch, 1024 x 600 capacitive touch screen. A 0.3-megapixel camera for video chatting and self-portrait Camera images.

  • Page 12: Rear View

    Rear View Figure 1-2. Rear View Table 1-2. Rear View Item Description Card Slot Insert a microSD card into the slot. Volume Control Increases or decreases the tablet volume. Hardware Specifications and Configurations...

  • Page 13: Top View

    Top View Figure 1-3. Top View Table 1-3. Top View Item Description Headset Jack Connects to stereo headphones. Connects to a computer or power adapter with a USB USB Micro-B Port cable. • Press and hold to turn the tablet on or off. Power Button •...

  • Page 14: Right View

    Right View Figure 1-4. Right View Table 1-4. Right View Item Description Volume Control Increases or decreases the tablet volume. Hardware Specifications and Configurations...

  • Page 15: Left View

    Left View Figure 1-5. Left View Table 1-5. Left View Item Description Card Slot Insert a microSD card into the slot. Hardware Specifications and Configurations...

  • Page 16: System Block Diagram

    System Block Diagram Figure 1-6. System Block Diagram 1-10 Hardware Specifications and Configurations...

  • Page 17: Specifications Table

    Specifications Table Computer specifications Item Metric Imperial Dimensions Length 199.0 mm 7.9 in Width 122.3 mm 4.8 in Height (front to rear) 10.7 mm 0.45 in Weight (equipped with optical 320 g 0.7 lb drive, flash drive, and battery) Weight (equipped with optical drive, flash drive, and without N/A (Embedded Battery) N/A (Embedded Battery)
  • Page 18 System Board Major Chips Item Specification MTK_ MT8111V Graphics Processor LVDS transmitter S IC MT8193A/B BGA 150P TRANSMITTER / MT8193 S IC MT6323GA/A VFBGA 145P PMIC DDR3L DDR3 1GB ULPI Phy for USB Bluetooth S IC MT6627N/A QFN 40P WLAN BT FM Wireless S IC MT6627N/A QFN 40P WLAN BT FM S IC MT6627N/A QFN 40P WLAN BT FM...
  • Page 19 Processor Item Specification MTK_MT8111V AP MCU: ® • Dual-core ARM Cortex-A7 MPCore operating at 1.3 GHz CPU package FCCSP 10.6mm*11.0mm, 475-ball, 0.4mm pitch package Processor Specifications Bus Speed Core Item Cores Cache Size Package Speed (FSB/DMI/QBI) Tech Voltage 32KB L1 I- FCCSP MT811 Dual...
  • Page 20 LAN Interface Item Specification LAN Chipset No support on board LAN LAN connector type LAN connector location Bluetooth Interface Item Specification Chipset MT6627 Data throughput Max 3Mbps Bluetooth 2.1+Enhanced Data Rate (EDR) / BT3.0+HS/ Protocol BT4.0 Interface Analog IQ Connector type Supported protocol Bluetooth Module Item...
  • Page 21 LCD 7.0” Item Specification Vendor/model name WTK/DFD070V2-NFLWaV04 Screen Diagonal (mm) Active Area (mm) 153.6 x 90 Display resolution (pixels) 1024 x RGB x 600 Pixel Pitch (mm) 0.15 x 0.15 Typical White Luminance (cd/m 220 nits also called Brightness Contrast Ratio Response Time (Optical Rise Time/Fall Time) msec Typical Power Consumption (watt)
  • Page 22 Rear Camera Item Specification Vendor and model Type Mini Card Item Specification Number supported Features 3G Card Item Specification Features Audio Codec Amplifier Item Specification Audio Controller MT6329 Audio onboard or optional On board Mono or Stereo Mono Resolution 16-bit data resolution Compatibility I2S Interface;...
  • Page 23 Audio Codec Amplifier Item Specification MT6323 provides mono 0.7W into 8? , high efficiency Class Amplifier IC AB/D audio amplifiers. MT6320 has built-in one channel high efficiency class AB/D audio power amplifier capable of delivering 0.7 watt of power on an 8 ohm BTL load from a 3.7V battery supply. Over- current protection is integrated.
  • Page 24 Video Interface Item Specification Chipset N/A (Graphic function is embedded in CPU) Package Interface Compatibility Sampling rate VRAM Item Specification Chipset Memory size Interface USB Port Item Specification USB compliance level USB 2.0 Modes Client Speed High speed dual mode Number of USB port(s) Client port x 1 Location...
  • Page 25 AC Adapter Item Specification Input rating 90Vac~264Vac • 7W: 0.25A Maximum input AC current • 10W: 0.4A • 7W: Inrush current shall not exceed 22% of the max rated value including I2t de-rating for all input components. Inrush current • 10W: The cold inrush current must not cause the input fuse to open or cause damage to component.
  • Page 26 CHAPTER Diagnostic Utilities Diagnostic Utilities ........2-2 Introduction .

  • Page 27: Chapter 2. Diagnostic Utilities

    Diagnostic Utilities Introduction The B1-721 has a software tool designed to diagnose problems with its hardware components. Diagnostic Tool SOP On the device, go to the applications screen and look for the diagnostic tool named ACTP. Figure 2-1. Device Applications Screen Tap the ACTP icon to start the testing process.

  • Page 28: Main Menu

    Main Menu The diagnostic tool tests the functions of TouchSlope, Double Touch, RGB, HW Keys, Front Camera, Speaker, Top Mic, SD Card and G-sensor. Select the function(s) you want to test, and then tap OK to start. Figure 2-2. Diagnostic Tool Main Menu Testing User Interface (UI) •...

  • Page 29: Test Report Ui

    Test Report UI After the text, the result will be displayed on the screen. The 4 colors indicate the status of the test as follows: NOTE: • Long press any color button to retest the single item. • Long press yellow item to exit the background test. “Exit”...
  • Page 30 2. Double Touch Test The Double Touch Test is used to test 2 points touch on the panel. Use two (2) fingers to draw from the left to the right along the blue bars. When the top bars has been drawn successfully, continue to draw on the blue bars on the right, then on the bottom and on the left.
  • Page 31 4. Hardware Keys Test Press the volume up and volume down keys. The Vol - and Vol + text on the screen will change if the HW keys work and auto pass the test. Or, judge the test by tapping the “Failure” button or touch “Retest” to retest. Figure 2-7.
  • Page 32 6. Speaker Test Music plays for 5 seconds. When the music stops playing, tap “Pass” if the test passes, “Failure” if the test fails, or “Retest” to redo the test. Figure 2-9. Speaker Test 7. Top Microphone Test Tap the screen to start the test. When “Recording” appears, speak into the device. Check the recorded sound quality when the screen shows “Replaying”.
  • Page 33 8. SD Card Insert an SD card into the device. The test starts automatically. If the SD card read-write capability is successful, a hint dialog will be popped-up on screen to tell user to remove tested SD card. Remove the SD card, the status of this test item will be marked as green on status window. If user ignores it until timeout, it will be judged as failed item and marked as red on status window.

  • Page 34: Csddl Tool

    CSDDL Tool Preparation For using the CSD DL tool you need to prepare the following: Devices: • PC/notebook with Windows OS • MicroUSB cable • USB hub • Files: • MTK tool driver • Microsoft .NET Framework 4.5 • Service ROM (image file) •...
  • Page 35 Windows Security pop-up warning appears, click on Install this driver software anyway. Figure 2-15. Warning Message NOTE: Make sure not close the Command Line interface until the driver installation is complete. Wait until the MTK driver is installed and the Install Complete! status appears on Command Line interface as follows.
  • Page 36 In the setup interface, click Install, to accept the license. Figure 2-17. Accept the License When the Microsoft .NET Framework 4.5 installation is complete, click Finish. Figure 2-18. Installation Complete 2-11 Diagnostic Utilities...

  • Page 37: Using The Csddl Tool

    Using the CSDDL Tool NOTE: Make sure the steps in Preparation section are completed. To start using the CSDDL tool, do the following: In your PC/notebook, navigate to CSD tool folder (CSDDL), double-click “Start.bat”. The CSD Tool(WIFI) opens. Figure 2-19. Opening the Tool Diagnostic Utilities 2-12...
  • Page 38 Click ScatterFile button to select Service ROM Scatter file. NOTE: • You can find the Scatter file in the Service ROM folder. For example, if the Service ROM version is ZSJEV_factory_csd_8317.00.1.0004, so the Scatter file can be found in the folder called ZSJEV_factory_csd_8317.00.1.0004. •...
  • Page 39 NOTE: - In the next step you need to click Start button, to begin with the download but by default, the first time you use the CSD tool, the Start button is grayed out. In order to start downloading the file, meanwhile you need to power off your PAD. - Make sure your PC/notebook is not yet connected to the PAD via MicroUSB cable.

  • Page 40: Nvram Writer Tool

    NVRAM Writer Tool Preparation For using the NVRAM Writer tool you need to prepare the following: Devices: • PC with ADB driver installed • MicroUSB cable • PAD with service ROM (root permission) OS Files: • “NvramWriter.apk” Figure 2-25. Required File Do the following: Navigate to MTK driver folder.
  • Page 41 Windows Security pop-up warning appears, click on Install this driver software anyway. Figure 2-28. Warning Message NOTE: Make sure not close the Command Line interface until the driver installation is complete. Wait until the driver is installed and the Install Complete! status appears on Command Line interface as follows.
  • Page 42 Connect the PAD to the PC via MicroUSB cable. In your PC, do the following: Linux OS: • Open the Linux OS terminal window and execute adb install –r <APK_PATH> command, where <APK_PATH> should be replaced with the real path. Example: adb install -r out/target/product/acer17_tb_wifi_only_jb/system/app/NvramWriter.apk Figure 2-30.

  • Page 43: Using The Nvram Writer Tool

    After the installation is complete, the application called “NvRamWriter” ( ) appears in PAD’s application list. Using the NVRAM Writer Tool NOTE: Make sure the steps in Preparation section are completed. To open the application in your PAD, tap the NvRamWriter icon ( The application main page opens.
  • Page 44 Reference Messages In the situation of an incorrect action, the following messages may pop-up: • If the input is empty when Submit button is tapped, the Please input xxx message appears, where xxx is the title of the item. Figure 2-33. Reference Message (1 of 4) •...
  • Page 45 • If the value in Confirm view is different than the value in ReWrite view and the Submit button is tapped then Confirm xxx message appears, where xxx is the title of the item to be confirmed. Figure 2-35. Reference Message (3 of 4) •...

  • Page 46: G-Sensor Calibration Tool

    G-Sensor Calibration Tool Preparation For using the G-Sensor Calibration tool you need to prepare the following: Devices: • PC with adb driver installed • MicroUSB cable • PAD with Service ROM (root permission) OS • Level Files: • “GSensorCali.apk” • “gsensorconfig.txt”...
  • Page 47 Windows Security pop-up warning appears, click on Install this driver software anyway. Figure 2-39. Warning Message NOTE: Make sure not close the Command Line interface until the driver installation is complete. Wait until the driver is installed and the Install Complete! status appears on Command Line interface as follows.
  • Page 48 In your PC, do the following: Linux OS: Double-click “installONubuntu.sh”. Figure 2-41. Installing the Tool (Linux OS) Accept the Run in terminal option. Figure 2-42. Run In Terminal Confirmation Message Type in the password. Figure 2-43. Providing the Password Windows OS: Double-click “installONWindows.bat”.

  • Page 49: Using The G-Sensor Calibration Tool

    Using the G-Sensor Calibration Tool NOTE: Make sure the steps in Preparation section are completed. To open the application in your PAD, tap the GSensorCali icon ( The application interface opens. Hold your PAD horizontally. Tap Start Calibration button. Figure 2-45. Starting to Calibrate •...
  • Page 50 • If the calibration failed at the first time, the application will auto calibrate for the second time. • If the calibration has failed for three times then the failure notice appears on the screen. Figure 2-47. Calibrating Has Failed •...
  • Page 51 CHAPTER Jumper and Connectors Location Jumper and Connector Locations ......3-2 Mainboard Top View ..........3-2 Mainboard Bottom View .

  • Page 52: Chapter 3. Jumper And Connector Locations

    Jumper and Connector Locations Mainboard Top View JHP1 Figure 3-1. Mainboard Top Table 3-1. Mainboard Top Jumper and Connectors Item Description Item Description CAMERA POWER ON JHP1 HEADPHONE VOLUME UP VOLUME DOWN Jumper and Connector Locations...

  • Page 53: Mainboard Bottom View

    Mainboard Bottom View PJP1 Figure 3-2. Mainboard Bottom Table 3-2. Mainboard Bottom Jumper and Connectors Item Description Item Description TOUCH SD CARD SPEAKER PJP1 BATTERYCONNECTOR Jumper and Connector Locations...
  • Page 54 CHAPTER Troubleshooting Troubleshooting .........4-2 General Information .

  • Page 55: General Information

    NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses. Obtain as much detail as possible about the problem.

  • Page 56: Power On Issues

    Power On Issues If the system does not power on, perform the following: Start Swap the BATT Check BATT Swap M/B Figure 4-1. Power On Issues Troubleshooting...

  • Page 57: No Display Issues

    No Display Issues If the system does not display, perform the following: Start Re-assembly LCD cable Check LCD cable or Swap LCD cable assembly ok? Check LCD panel Swap LCD panel Swap M/B Figure 4-2. No Display Issues Troubleshooting...

  • Page 58: Lcd Picture Failure

    LCD Picture Failure If the LCD picture fails, perform the following: Start Re-assembly Check LCD cable LCD cable assembly ok? Swap LCD panel Check LCD panel Swap M/B Figure 4-3. LCD Picture Failure Troubleshooting...

  • Page 59: Touch Screen Failure

    Touch Screen Failure If the touch screen fails, perform the following: Start Check touch Re-assembly touch screen cable assembly screen cable Swap touch screen Check touch screen panel panel or C/B Swap M/B Figure 4-4. Touch Screen Failure Troubleshooting...

  • Page 60: Internal Speaker Failure

    Internal Speaker Failure If the internal speakers fail, perform the following: Start Swap SPK Check SPK Swap M/B Figure 4-5. Internal Speaker Failure Troubleshooting...

  • Page 61: Extend Earphone Failure

    Extend Earphone Failure If the external earphone fails, perform the following: Start Swap earphone Check earphone fixture fixture Swap M/B Figure 4-6. Extend Earphone Failure Troubleshooting...

  • Page 62: Usb Test Failure

    USB Test Failure If the UBS test fails, perform the following: Start Swap USB fixture Check USB fixture Swap M/B Figure 4-7. USB Test Failure Troubleshooting...

  • Page 63: Camera Failure

    Camera Failure If the camera fails, perform the following: Start Swap the Check the camera/B Camera/B Swap M/B Figure 4-8. Camera Failure Troubleshooting 4-10...

  • Page 64: Wifi & Bt Function Test Failure

    WiFi & BT Function Test Failure If the WiFi and Bluetooth function tests fail, perform the following: Start Check the Swap the WiFi & BT antenna antenna Swap M/B Figure 4-9. WiFi & BT Function Test Failure 4-11 Troubleshooting...

  • Page 65: Gps Function Test Failure

    GPS Function Test Failure If the GPS function fails, perform the following: Start Swap the Check the GPS antenna antenna Swap M/B Figure 4-10. GPS Function Test Failure Troubleshooting 4-12...

  • Page 66: Other Functions Failure

    Other Functions Failure If other functions, such as SD card/G-sensor test fails, perform the following: First check if the test fixture is OK. Swap the mainboard. 4-13 Troubleshooting...
  • Page 67 CHAPTER Service and Maintenance Service and Maintenance ........5-2 Introduction .

  • Page 68: Chapter 5. Service And Maintenance

    Service and Maintenance Introduction This chapter contains general information about the tablet, a list of tools needed to perform the required maintenance and step by step procedures on how to remove and install components from the tablet computer. Recommended Equipment The following tools are required to perform maintenance on the tablet: •...

  • Page 69: Maintenance Flowchart

    Maintenance Flowchart The flowchart in Figure 5-1 provides a graphic representation of the module removal and installation sequences. It provides information on what components need to be removed and installed during servicing Micro SD Card Lower Case Speaker Mainboard Microphone Battery Camera Figure 5-1.

  • Page 70: Getting Started

    Getting Started The flowchart (Figure 5-1, page 5-3) identifies sections illustrating the entire removal and installation sequence. Observe the order of the sequence to avoid damage to any of the hardware components. Perform the following prior to performing any maintenance procedures: Place the system on a flat work surface.

  • Page 71: Micro Sd Card Removal

    Micro SD Card Removal Push the micro SD card to eject it from the slot, and then remove the card. Figure 5-3. Removing the Micro SD Card Micro SD Card Installation Push the micro SD card into the slot until it clicks into place. Figure 5-4.

  • Page 72: Lower Case Removal

    Lower Case Removal Prerequisite: Micro SD Card Removal on page  Using a plastic pry, pry into the lower-right corner of the tablet to slightly create an opening and continue releasing latches to the direction of the arrow. Figure 5-5. Unlocking the Latches (1 of 4) Pry to release the top side latches, following the direction of the arrow.
  • Page 73 Pry to release the left side latches, following the direction of the arrow. Figure 5-7. Unlocking the Latches (3 of 4) Pry to release the bottom side latches, following the direction of the arrow. Figure 5-8. Unlocking the Latches (4 of 4) Service and Maintenance...
  • Page 74 Disconnect the battery cable connector from the mainboard connector. Figure 5-9. Disconnecting the Battery Cable Service and Maintenance...
  • Page 75 The following components can be found on the bezel: Touch panel FPC (A) LCD panel connector (B) Microphone connector (C) Speaker connector (D) Figure 5-10. Components Overview Service and Maintenance...

  • Page 76: Lower Case Installation

    Lower Case Installation Before installing the lower case, make sure the following are installed: • Camera (if not, perform Camera Installation on page 5-35). • Speaker (if not, perform Speaker Installation on page 5-16). • Mainboard (if not, perform Mainboard Installation on page 5-28).
  • Page 77 Align the top side latches on lower case with the top side slots on the bezel. Figure 5-12. Aligning the Lower Case with the Bezel Snap the top side latches to attach the lower case to the bezel. Figure 5-13. Installing the Lower Case (1 of 4) Service and Maintenance 5-11...
  • Page 78 Snap the right side latches. Figure 5-14. Installing the Lower Case (2 of 4) Continue to snap the bottom side latches. Figure 5-15. Installing the Lower Case (3 of 4) 5-12 Service and Maintenance...
  • Page 79 Snap the left side latches. Figure 5-16. Installing the Lower Case (4 of 4) Service and Maintenance 5-13...

  • Page 80: Speaker Removal

    Speaker Removal Prerequisite Lower Case Removal on page  Disconnect the speaker cable. Figure 5-17. Disconnecting the Speaker Cable Unroute the speaker cable. Figure 5-18. Unrouting the Speaker Cable 5-14 Service and Maintenance...
  • Page 81 Detach the speaker from its slot on the bezel. Figure 5-19. Removing the Speaker Service and Maintenance 5-15...

  • Page 82: Speaker Installation

    Speaker Installation Align and install the speaker to its slot on the bezel, cable to the direction of the cable guides. Figure 5-20. Installing the Speaker Route the speaker cable through the guides on the bezel. Figure 5-21. Routing the Speaker Cable 5-16 Service and Maintenance...
  • Page 83 Connect the speaker cable to the connector on mainboard. Figure 5-22. Connecting the Speaker Cable Install the lower case (see Lower Case Installation on page 5-10). Service and Maintenance 5-17...

  • Page 84: Microphone Removal

    Microphone Removal Prerequisite Lower Case Removal on page  TIP: You need to unroute the speaker cable first, then you can access the microphone cable. Disconnect the speaker cable connector from the mainboard connector. Figure 5-23. Disconnecting the Speaker Cable Unroute the speaker cable.
  • Page 85 Disconnect the microphone cable connector from the mainboard connector. Figure 5-25. Disconnecting the Microphone Cable Unroute the microphone cable. Figure 5-26. Unrouting the Microphone Cable Service and Maintenance 5-19...
  • Page 86 Detach the microphone from its slot on the bezel. Figure 5-27. Removing the Microphone 5-20 Service and Maintenance...

  • Page 87: Microphone Installation

    Microphone Installation Install the microphone to its slot on the bezel. Figure 5-28. Installing the Microphone Route the microphone cable through the guides on the bezel. Figure 5-29. Routing the Microphone Cable Service and Maintenance 5-21...
  • Page 88 Connect the microphone cable to the connector on mainboard. Figure 5-30. Connecting the Microphone Cable Route the speaker cable through the guides on the bezel. Figure 5-31. Routing the Speaker Cable 5-22 Service and Maintenance...
  • Page 89 Connect the speaker cable to the connector on mainboard. Figure 5-32. Connecting the Speaker Cable Install the lower case (see Lower Case Installation on page 5-10). Service and Maintenance 5-23...

  • Page 90: Mainboard Removal

    Mainboard Removal Prerequisite: Lower Case Removal on page  Remove the protective tape on touch panel connector. Figure 5-33. Removing the Protective Tape 5-24 Service and Maintenance...
  • Page 91 Release the latch on LCD panel connector (A) and disconnect the following connectors from the mainboard connectors: • LCD panel cable connector (A) • Microphone cable connector (B) • Speaker cable connector (C). Figure 5-34. Disconnecting the Cables from the Mainboard Remove the protective sponge around the touch panel connector.
  • Page 92 Pull out the connector pins (D) on the sides of the touch panel connector, and disconnect the touch panel FPC. Figure 5-36. Disconnecting the Touch Panel FPC Remove the five (5) screws securing the mainboard to the bezel. Figure 5-37. Removing the Mainboard Screws 5-26 Service and Maintenance...
  • Page 93 Lift the mainboard and remove from the bezel. Figure 5-38. Removing the Mainboard Service and Maintenance 5-27...

  • Page 94: Mainboard Installation

    Mainboard Installation Align the mainboard to the guide pins on the bezel and install. TIP: Make sure that no cable is placed under the mainboard. Figure 5-39. Installing the Mainboard Slightly press on the USB Micro-B port side corner of the mainboard, to connect the camera. USB Micro-B Port Figure 5-40.
  • Page 95 Attach the five (5) screws to secure the mainboard to the bezel. NOTE: Screw torque = 1.0~1.5 kgf.cm Figure 5-41. Attaching the Mainboard Screws With the connector pins (D) outwards, connect the touch panel FPC cable to the mainboard connector and then push the pins to lock. Figure 5-42.
  • Page 96 Attach the protective sponge to the touch panel FPC. Figure 5-43. Attaching the Protective Sponge Connect the following cable connectors: • LCD panel cable connector (A) • Microphone cable connector (B) • Speaker cable connector (C), and tighten the latch on LCD panel cable connector (A). Figure 5-44.
  • Page 97 Attach the protective tape touch panel connector. Figure 5-45. Attaching the Protective Tape Install the lower case (see Lower Case Installation on page 5-10). Table 5-2. Mainboard Screws Screw Name Screw Type Screw Torque Quantity M 1.6 x 3.0 1.0 ~ 1.5 kgf.cm M 2.0 x 1.7 1.0 ~ 1.5 kgf.cm Service and Maintenance...

  • Page 98: Battery Removal

    Battery Removal Prerequisite: Lower Case Removal on page  Pry on the lower corner to create an opening. Figure 5-46. Removing the Battery (1 of 2) Hold the lower case with one hand and abruptly pull the battery with the other hand to detach the adhesives underneath.

  • Page 99: Battery Installation

    Battery Installation Align the battery to the lower case, and press slightly to secure the adhesives. Figure 5-48. Installing the Battery Install the lower case (see Lower Case Installation on page 5-10). Service and Maintenance 5-33...

  • Page 100: Camera Removal

    Camera Removal Prerequisite: Mainboard Removal on page 5-24  Bend the slot release tab and detach the camera from the bezel. Figure 5-49. Removing the Camera Remove the protective rubber ring from the camera. Figure 5-50. Removing the Protective Rubber Ring 5-34 Service and Maintenance...

  • Page 101: Camera Installation

    Camera Installation Install the protective rubber ring on the camera. Figure 5-51. Installing the Protective Rubber Ring Install the camera into its slot on the bezel. Figure 5-52. Installing the Camera Install the mainboard (see Mainboard Installation on page 5-28). Service and Maintenance 5-35...
  • Page 102 CHAPTER Field Replaceable Unit List FRU (Field Replaceable Unit) List ......6-2 Exploded Diagram ..........6-3 FRU List .

  • Page 103: Chapter 6. Fru (Field Replaceable Unit) List

    NOTE: To scrap or to return the defective parts, users should follow local government ordinances or regulations on proper disposal, or follow the rules set by the regional Acer office on how to return the defective parts. FRU (Field Replaceable Unit) List...

  • Page 104: Exploded Diagram

    Exploded Diagram Figure 6-1. Main Assembly Exploded Diagram FRU (Field Replaceable Unit) List...
  • Page 105 ASSY LCD TOUCH MODULE 7.0" INCL. BEZEL - GRAY - B1- 6M.L3HN2.001 720 W/O CONTROL BOARD SPEAKER 23.L3HN2.002 CMOS SPONGE CAMERA 0.3M 57.L3HN2.001 MIC SET 23.L3HN2.001 MAINBOARD MB_RUBBER 47.L3HN2.002 BATTERY LGC AP13P Polymer 1S1P LGC 1 cell 2900mAh KT.0010G.005 LCD COVER BLACK - B1-720 60.L3HN2.001 FRU (Field Replaceable Unit) List...

  • Page 106: Fru List

    60.L3HN2.001 LCD ASSEMBLY ASSY LCD TOUCH MODULE 7.0" INCL. BEZEL - 6M.L3HN2.001 GRAY - B1-720 W/O CONTROL BOARD ASSY LCD TOUCH MODULE 7.0" INCL. BEZEL - 6M.L3MN2.001 RED - B1-720 W/O CONTROL BOARD ASSY LCD TOUCH MODULE 7.0" INCL. BEZEL - 6M.L3KN2.001...
  • Page 107 CATEGORY Acer Description AcerPN SPEAKER MIC SET 23.L3HN2.001 SPEAKER 23.L3HN2.002 MISCELLANEOUS CAMERA_MYLAR FOR WIFI 47.L3HN2.001 MB_RUBBER 47.L3HN2.002 FRU (Field Replaceable Unit) List...

  • Page 108: Screw List

    Screw List CATEGORY Description Part No. SCREWS SCREW 1.6D 3L K 3.1D ZK NL CR3 86.L3HN2.001 SCREW 2.0D 1.7L K 7.0D 0.6T NI NL 86.L3HN2.002 FRU (Field Replaceable Unit) List...

  • Page 109: Android Os Environment Test

    B1-720 ........

  • Page 110: Android Os Environment Test

    Test Compatible Components This computer’s compatibility is tested and verified by Acer’s internal testing department. All of its system functions are tested under Android OS environment. Refer to the following lists for components, adapter cards, and peripherals which have passed these tests.
  • Page 111 VENDOR TYPE DESCRIPTION PART NO. eMMC HYNIX NAND 16GB SKHynix H26M52003EQR (FW 0x05) KN.16G0G.009 LF+HF eMMC SAMSUNG NAND 16GB Samsung KLMAG2WEMB-B031 LF+HF KN.16G0B.008 19nm TLC eMMC v5.0 LVDS BRIDGE IC EC MT8193 LVDS and HDMI MEDIATEK MT8193 NC.26011.002 converter for MediaTek solutions RF CHIPSET MEDIATEK 3G RF on board MEDIATEK...
  • Page 112 VENDOR TYPE DESCRIPTION PART NO. AC ADAPTER Adapter LITE-ON 7W 5.25V/1.35A LITE-ON PA-1070-07AW LF wall-mounted KP.00703.001 fix AC - US Adapter LITE-ON 7W 5.25V/1.35A LITE-ON PA-1070-07AC LF wall-mounted fix KP.00703.002 AC - CN Adapter LITE-ON 7W 5.25V/1.35A LITE-ON PA-1070-07AE LF wall-mounted fix KP.00703.003 AC - EU Adapter LITE-ON 7W 5.25V/1.35A...
  • Page 113 CHAPTER Online Support Information Online Support Information ....... .8-2 Introduction ........... . 8-2...

  • Page 114: Chapter 8. Online Support Information

    This section describes online technical support services available to help users repair their Acer Systems. For distributors, dealers, ASP or TPM, please refer the technical queries to a local Acer branch office. Acer Branch Offices and Regional Business Units may access our website. However some information sources will require a user i.d.

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