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Acer Chromebook C852 Lifecycle Extension Manual

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Acer Chromebook C852/C852T
LIFECYCLE EXTENSION
GUIDE

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Summary of Contents for Acer Chromebook C852

  • Page 1 Acer Chromebook C852/C852T LIFECYCLE EXTENSION GUIDE...

  • Page 2: Table Of Contents

    Self-Repair ..........1-1 Disassembly Procedures .

  • Page 3: Self-Repair

    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

    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  Touchpad module  USB board  Mainboard  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 eleven (11) screws from the base cover (Figure 1-3). Figure 1-3. Base Cover Removal 2. Carefully pry up the base cover starting from the upper right side (as shown in Figure 1-4) to release the latches. Figure 1-4.
  • 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 acetate tape (B) securing the battery cable to the mainboard connector (Figure 1-6). Figure 1-6. Battery Pack Removal 3.
  • Page 11 4. Remove the battery pack from the top assembly (Figure 1-8). WEEE Annex VII Component: Battery Pack Figure 1-8. Battery Pack Removal IMPORTANT: Follow local regulations for battery disposal. Disassembly Procedures...
  • Page 12 Touchpad Module Removal Prerequisite: Battery Pack Removal 1. Detach the adhesive tape (A) securing the touchpad FFC. Then disconnect the keyboard FPC from the mainboard connector (B) (Figure 1-9). Figure 1-9. Touchpad Module Removal 2. Disconnect the touchpad FFC from the touchpad module connector (C) and the mainboard connector (D).
  • Page 13 3. Detach the adhesive tape (E) securing the keyboard FPC (Figure 1-11). Figure 1-11. Touchpad Module Removal 4. Slightly lift the mylar. Then detach the conductive tape (F) from the touchpad module and top assembly (Figure 1-12). Figure 1-12. Touchpad Module Removal Disassembly Procedures 1-11...
  • Page 14 5. Remove three (3) screws securing the touchpad module (Figure 1-13). Figure 1-13. Touchpad Module Removal 6. Using the screwdriver, push the guide pins (G) firmly to release them from the top assembly (Figure 1-14). 7. Slide the touchpad module slightly to disengage it from the bottom latches (H), and then remove the touchpad module (I) from the top assembly (Figure 1-14).
  • Page 15 USB Board Removal Prerequisite: Battery Pack Removal 1. Remove three (3) screws (A) securing the right LCD hinge (Figure 1-15). Figure 1-15. USB Board Removal 2. Lift the top assembly until it is fully open (Figure 1-16). Figure 1-16. USB Board Removal Disassembly Procedures 1-13...
  • Page 16 3. Close the top assembly and lift the right LCD hinge until it is fully extended (Figure 1-17). Figure 1-17. USB Board Removal 4. Disconnect the 20-pin USB board FFC from the mainboard connector (B) and the USB board connector (C). Then remove the 20-pin USB board FFC (Figure 1-18).
  • Page 17 7. Release the I/O bracket from the USB port slot and guide pins (G) on the top assembly. Then remove the I/O bracket (H) (Figure 1-19). Figure 1-19. USB Board Removal 8. Release the USB board from the USB ports slots and guide pins (I) on the top assembly.
  • Page 18 Mainboard Removal Prerequisite: Battery Pack Removal 1. Remove three (3) screws (A) securing the left LCD hinge (Figure 1-21). Figure 1-21. Mainboard Removal 2. Lift the top assembly until it is fully open (Figure 1-22). Figure 1-22. Mainboard Removal 1-16 Disassembly Procedures...
  • Page 19 3. Close the top assembly and lift the left LCD hinge until it is fully extended (Figure 1-23). Figure 1-23. Mainboard Removal 4. Disconnect the WLAN antennas cables from the WLAN module connectors (B) (Figure 1-24). 5. Disconnect the 20-pin USB board FFC from the mainboard connector (C) (Figure 1-24).
  • Page 20 11. Remove seven (7) screws (I) securing the mainboard and I/O bracket (Figure 1-24). Figure 1-24. Mainboard Removal 12. Release the I/O bracket from the USB port slot and guide pins (J) on the top assembly. Then remove the I/O bracket (K) (Figure 1-25).
  • Page 21 13. Release the mainboard from the I/O ports slots and guide pins (L) on the top assembly. Then remove the mainboard (M) (Figure 1-26). WEEE Annex VII Component: Mainboard Figure 1-26. Mainboard Removal Figure 1-27. Mainboard IMPORTANT: Circuit boards >10 cm² have been highlighted with a yellow rectangle as shown in Figure 1-27.
  • Page 22 Keyboard Removal Prerequisite: Battery Pack Removal 1. Disconnect the keyboard FPC from the mainboard connector (A) (Figure 1-28). 2. Remove one (1) screw securing the keyboard in place (Figure 1-28). Figure 1-28. Keyboard Removal 3. Disconnect the touchpad FFC from the mainboard connector (B). Then unroute and detach the adhesive underneath the touchpad FFC as shown in Figure 1-29.
  • Page 23 4. Detach the adhesive tape (C) securing the keyboard FPC (Figure 1-30). Figure 1-30. Keyboard Removal 5. Slightly lift to detach the bottom portion (with the adhesive (D)) of the keyboard FPC from the top assembly (Figure 1-31). Figure 1-31. Keyboard Removal Disassembly Procedures 1-21...
  • Page 24 6. Carefully flip the top assembly and place it on the surface with the keyboard side facing up (Figure 1-32). 7. Using a flat-headed tool, carefully pry to disengage the upper side latches of the keyboard (E) as shown in Figure 1-32.
  • Page 25 LCD Module Removal Prerequisite: Battery Pack Removal 1. Disconnect the WLAN antenna cables from the WLAN module connectors (A) and unroute the cables from the top assembly (Figure 1-34). Figure 1-34. LCD Module Removal 2. Disconnect the eDP cable from the mainboard connector (B) and unroute the cable from the top assembly (Figure 1-35).
  • Page 26 3. Remove six (6) screws securing the LCD hinges in place (Figure 1-36). Figure 1-36. LCD Module Removal 4. Lift the top assembly until it is fully open (Figure 1-37). Figure 1-37. LCD Module Removal 1-24 Disassembly Procedures...
  • Page 27 5. Close the top assembly and lift both LCD hinges until they are fully extended (Figure 1-38). Figure 1-38. LCD Module Removal 6. Open the top assembly. Then remove the LCD module away from the top assembly (Figure 1-39). CAUTION: Make sure all cables and antennas are moved away from the device to avoid damage during removal.
  • Page 28 LCD Bezel Removal Prerequisite: LCD Module Removal 1. Pry the LCD bezel from the upper side to release the latches (Figure 1-40). Figure 1-40. LCD Bezel Removal 2. Continue prying along the right side of the bezel (Figure 1-41). Figure 1-41. LCD Bezel Removal 1-26 Disassembly Procedures...
  • Page 29 3. Continue prying along the left side of the bezel (Figure 1-42). Figure 1-42. LCD Bezel Removal 4. Continue prying along the bottom side of the bezel until all the latches have been released (Figure 1-43). Then remove the LCD bezel from the LCD cover. Figure 1-43.
  • Page 30 LCD Panel Removal Prerequisite: LCD Bezel Removal 1. Unroute the eDP cable from the cable guides on the LCD cover (Figure 1-44). Figure 1-44. LCD Panel Removal 1-28 Disassembly Procedures...
  • Page 31 2. Pry slightly to access the double-sided mounting tape (A) underneath the LCD panel (B) and the LCD hinge. Then pull to detach the double-sided mounting tape from the LCD cover. Repeat the same procedure to remove the double-sided mounting tape on another side of the LCD panel and the LCD hinge (Figure 1-45).
  • Page 32 4. Lift the latch (D) securing the eDP cable (Figure 1-47). Figure 1-47. LCD Panel Removal 5. Disconnect the eDP cable from the LCD panel connector (E) (Figure 1-48). Then remove the LCD panel. Figure 1-48. LCD Panel Removal 1-30 Disassembly Procedures...
  • Page 33 Top Assembly Removal Prerequisite: Ensure that the Touchpad Module, USB Board, Mainboard, Speakers, Keyboard, and LCD Module have been disassembled prior removing the top assembly. Figure 1-49. Top Assembly Disassembly Procedures 1-31...

  • Page 34: Troubleshooting

    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 35 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 36 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 37 "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 38: Fru (Field Replaceable Unit) List

    FRU (Field Replaceable Unit) List Please contact your local service center to find out how to obtain the part or replace your device. 1-36 FRU (Field Replaceable Unit) List...

  • Page 39: Exploded Diagrams

    Exploded Diagrams Figure 1-50. System Exploded Diagram Table 1-1. System Exploded Diagram Description Touchpad Module Top Assembly (without keyboard) Keyboard I/O Bracket L Mainboard I/O Bracket R USB Board USB Board FFC (20-pin) USB Board FFC (50-pin) Exploded Diagrams 1-37...
  • Page 40 Table 1-1. System Exploded Diagram (Continued) Description Touchpad FFC Speakers Insulator Mylar (for battery) Acetate Tape (for battery) Battery Pack Base Cover 1-38 Exploded Diagrams...
  • Page 41 Figure 1-51. LCD Assembly Exploded Diagram Table 1-2. LCD Assembly Exploded Diagram Description LCD Bezel LCD Panel Microphone Rubbers Camera Module LCD Hinge L LCD Hinge R eDP Cable WLAN Antenna (MAIN+AUX) LCD Cover Exploded Diagrams 1-39...

  • Page 42: Check For Updates Yourself

    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 43: Factory Reset Your Chromebook

    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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