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Acer CB314-4H Lifecycle Extension Manual
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Acer CB314-4H Lifecycle Extension Manual

Acer CB314-4H Lifecycle Extension Manual

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Acer Chromebook
CB314-4H/CB314-4HT
LIFECYCLE EXTENSION
GUIDE

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Summary of Contents for Acer CB314-4H

  • Page 1 Acer Chromebook CB314-4H/CB314-4HT LIFECYCLE EXTENSION GUIDE...
  • Page 2 Self-Repair ..........1-1 Disassembly Procedures .
  • Page 3 NOTE: NOTE: In the event of not being able to create a Factory Default recovery media, it is possible to obtain a copy of the recovery media through Acer Customer Service (http://www.acer.com/support) This is not a free of charge service.
  • Page 4 Disassembly Procedures Safety Guidelines This chapter contains step by step procedures on how to remove and de-install components from the computer. Use the following safety guidelines to ensure your personal safety. Each procedure included in this chapter assumes that you are preparing your computer for recycling and disposal.
  • Page 5 WEEE Annex VII Component These components are classified as requiring selective treatment: Battery pack  USB board  Mainboard  Touchpad module  LCD panel  Disassembly Procedures...
  • Page 6 Pre-disassembly Instructions Do the following prior to starting any maintenance procedures: 1. Place the system on a stable work surface. 2. Remove the power adapter from the USB Type-C port (A or B) as shown in Figure 1-1 Figure 1-2. 3.
  • Page 7 NOTE: NOTE: Make sure the system is completely powered off. Disassembly Procedures...
  • Page 8 Base Cover Removal 1. Remove ten (10) screws from the base cover (Figure 1-3). Figure 1-3. Base Cover Removal 2. Carefully pry up the base cover starting from the edges (as shown in Figure 1-4) to release the latches. Figure 1-4. Base Cover Removal Disassembly Procedures...
  • Page 9 3. Continue releasing the remaining latches. Then remove the base cover (Figure 1-5). Figure 1-5. Base Cover Removal Disassembly Procedures...
  • Page 10 Battery Pack Removal Prerequisite: Base Cover Removal 1. Find the battery pack (A) on the top assembly (Figure 1-6). 2. Detach the transparent mylar (B) as shown in Figure 1-6. Figure 1-6. Battery Pack Removal 3. Detach the acetate tape (C) securing the battery cable to the mainboard connector (Figure 1-7).
  • Page 11 4. Disconnect the battery cable from the mainboard connector (D) (Figure 1-8). Figure 1-8. Battery Pack Removal 5. Lift to release the battery pack from the guide pins (E) (Figure 1-9). Then remove the battery pack from the top assembly. WEEE Annex VII Component: Battery Pack Figure 1-9.
  • Page 12 LCD Module Removal Prerequisite: Battery Pack Removal 1. Disconnect the LVDS cable from the mainboard connector (A). Then unroute the cable from the top assembly (Figure 1-10). Figure 1-10. LCD Module Removal 2. Remove eight (8) screws securing the LCD hinges in place (Figure 1-11).
  • Page 13 3. Lift the top assembly until it is fully open (Figure 1-12). Figure 1-12. LCD Module Removal 4. Lift both LCD hinges until they are fully extended (Figure 1-13). Figure 1-13. LCD Module Removal Disassembly Procedures 1-11...
  • Page 14 5. Open the top assembly. Then remove the top assembly away from the LCD module (Figure 1-14). CAUTION: Make sure all cables and antennas are moved away from the device to avoid damage during removal. Figure 1-14. LCD Module Removal 1-12 Disassembly Procedures...
  • Page 15 USB Board Removal Prerequisite: Ensure that the LCD Module and Fan Module have been disassembled prior removing the USB board. 1. Disconnect the USB board L FFC (A) from the USB board and mainboard connectors. Then carefully detach the FFC from its underneath adhesive to remove it from the top assembly (Figure 1-15).
  • Page 16 4. Release the USB board (C) from the I/O ports slots and guide pin (D) on the top assembly (Figure 1-16). Then remove the USB board. WEEE Annex VII Component: USB Board Figure 1-16. USB Board Removal 1-14 Disassembly Procedures...
  • Page 17 Mainboard Removal Prerequisite: Ensure that the LCD Module, Fan Module, and Heatsink have been disassembled prior removing the mainboard. 1. Disconnect the USB board L FFC from the mainboard connector (A) (Figure 1-17). 2. Disconnect the WLAN antennas cables from the WLAN module connectors (B) (Figure 1-17).
  • Page 18 7. Remove four (4) screws securing the mainboard (Figure 1-18). Figure 1-18. Mainboard Removal 8. Release the mainboard (G) from the I/O ports slots and guide pins (H) on the top assembly (Figure 1-19). Then remove the mainboard. WEEE Annex VII Component: Mainboard Figure 1-19.
  • Page 19 Figure 1-20. Mainboard IMPORTANT: Circuit boards >10 cm² have been highlighted with a yellow rectangle as shown in Figure 1-20. Remove the circuit board and follow local regulations for disposal. Disassembly Procedures 1-17...
  • Page 20 Touchpad Module Removal Prerequisite: Mainboard Removal 1. Disconnect the touchpad FFC from the touchpad module connector (A). Then carefully detach the FFC from its underneath adhesive to remove it from the top assembly (Figure 1-21). Figure 1-21. Touchpad Module Removal CAUTION: Touchpad FFC (Flexible Flat Circuit) can be damaged if removed while the touchpad module connector is locked.
  • Page 21 2. Slightly detach the keyboard mylar. Then lift the mylar and keyboard FPC. CAUTION: When detaching the keyboard mylar, be careful not to tear the mylar. If the keyboard mylar is broken, please replace it with a new one before installing the touchpad module.
  • Page 22 5. Using the screwdriver, push the guide pins (C) firmly to release them from the top assembly (Figure 1-24). 6. Slide the touchpad module (D) slightly to disengage it from the bottom latches (E), and then remove the touchpad module from the top assembly (Figure 1-24).
  • Page 23 LCD Bezel Removal Prerequisite: LCD Module Removal 1. Pry the LCD bezel from the upper side to release the latches (Figure 1-25). Figure 1-25. LCD Bezel Removal 2. Continue prying along the right side of the bezel (Figure 1-26). Figure 1-26. LCD Bezel Removal Disassembly Procedures 1-21...
  • Page 24 3. Continue prying along the left side of the bezel (Figure 1-27). Figure 1-27. LCD Bezel Removal 4. Continue prying along the bottom side of the bezel until all the latches have been released (Figure 1-28). Then remove the LCD bezel from the LCD cover. Figure 1-28.
  • Page 25 LCD Panel Removal Prerequisite: LCD Bezel Removal NOTE: NOTE: The LVDS cable includes the LCD panel cable and the camera cable. 1. Unroute and detach the LVDS cable from the cable guides on the LCD cover as shown Figure 1-29. Figure 1-29.
  • Page 26 2. Pry slightly to access the double-sided mounting tape (A) underneath the LCD panel (B). Then pull to detach the double-sided mounting tape. Repeat the same procedure to remove the double-sided mounting tape on another side of the LCD panel (Figure 1-30).
  • Page 27 4. Lift the latch (D) securing the LVDS cable (Figure 1-32). Figure 1-32. LCD Panel Removal 5. Disconnect the LVDS cable from the LCD panel connector (E) (Figure 1-33). Then remove the LCD panel. Figure 1-33. LCD Panel Removal Disassembly Procedures 1-25...
  • Page 28 Top Assembly Removal (Keyboard Removal) Prerequisite: Ensure that the Speakers, USB Board, and Touchpad Module have been disassembled prior removing the top assembly. NOTE: NOTE: The keyboard is included as part of the top assembly and cannot be disassembled. In the event that the keyboard is damaged, replace the entire top assembly. Figure 1-34.
  • Page 29 Electronic Boards Diagrams Figure 1-35. System Block Diagram Electronic Boards Diagrams 1-27...
  • Page 30 Troubleshooting This chapter shows you how to deal with common system problems. Read it before calling a technician if a problem occurs. Solutions to more serious problems require opening up the computer. Do not attempt to open the computer yourself; contact your dealer or authorized service center for assistance.
  • Page 31 What you need to do Step 1: Try less invasive steps If you can sign in to your Chromebook, try these steps first: 1. Turn your Chromebook off, then back on again. 2. If your Chromebook still has an error, reset to factory settings.
  • Page 32 Chromebook tablet: Press and hold the Volume Up, Volume Down, and Power  buttons for at least 10 seconds, then release them. 3. You'll see one of these messages: "Chrome OS is missing or damaged. Please insert a recovery USB stick or SD card.". ...
  • Page 33 "Please remove all connected devices and start recovery". First, remove anything that's connected to your Chromebook, such as a mouse, SD card or external hard drive. Then follow the steps to enter recovery mode. "The device you inserted does not contain Chrome OS". First, make sure that you inserted the USB drive or SD card that you used to create recovery media.
  • Page 34 FRU (Field Replaceable Unit) List Please contact your local service center to find out how to obtain the part or replace your device. 1-32 FRU (Field Replaceable Unit) List...
  • Page 35 Exploded Diagrams Figure 1-36. System Exploded Diagram Table 1-1. System Exploded Diagram Description Top Assembly Heatsink Mainboard USB board L FFC USB board H FFC USB Board Conductive Tape Exploded Diagrams 1-33...
  • Page 36 Table 1-1. System Exploded Diagram (Continued) Description Touchpad FFC Touchpad Module Acetate Tape Transparent Mylar Battery Pack Speakers Base Cover 1-34 Exploded Diagrams...
  • Page 37 Figure 1-37. LCD Assembly Exploded Diagram Table 1-2. LCD Assembly Exploded Diagram Description LCD Cover LVDS Cable LCD Hinge L LCD Hinge R LCD Adhesive Tapes Camera Module Microphone Rubbers LCD Panel LCD Bezel Exploded Diagrams 1-35...
  • Page 38 Check for updates yourself 1. Turn on your Chromebook. 2. Connect your Chromebook to Wi-Fi. 3. At the bottom right, select the time. 4. Select Settings 5. At the bottom of the left panel, select About Chrome OS. 6. Under "Google Chrome OS", you'll find which version of the Chrome operating system your Chromebook uses.
  • Page 39 Factory reset your Chromebook 1. Sign out of your Chromebook. 2. Press and hold Ctrl + Alt + Shift + r. 3. Select Restart. 4. In the box that appears, select Powerwash > Continue. 5. Follow the steps that appear and sign in with your Google Account. NOTE: NOTE: The account you sign in with after you reset your Chromebook will be the owner...

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