Acer Chromebook 11 C733 - User Manual

1. Remove twelve (12) screws from the base cover
2. Using a scribe, carefully pry open the base cover starting from the gap between the base cover and top assembly next to the LCD
hinge (as indicated in yellow)
3. Slide the scribe along the edges of the base cover in the direction indicated until all the latches have been released
4. Lift the base cover from the left side of the system and remove the base cover from the system in the direction indicated.

Summary

WLAN Module Replacement Procedure

Remove Base Cover Screws

Remove twelve (12) screws securing the base cover.

Pry and Open Base Cover

Carefully pry open the base cover starting from the gap near the LCD hinge.

Lift and Remove Base Cover

Lift the base cover from the left side and remove it from the system.

Disconnect Battery Cable

Disconnect the battery cable from the motherboard.

Disconnect WLAN Antenna Cables

Disconnect the WLAN antenna cables from the WLAN module.

Remove WLAN Module

Remove the screw securing the WLAN module and then remove the module.

Install New WLAN Module

Insert the new WLAN module into the mainboard connector.

Connect WLAN Antennas

Connect the MAIN (black) and AUX (white) antenna cables to the WLAN module.

Place Rubber and Connect Battery

Place a square rubber on the WiFi connector area and connect the battery cable.

Reassemble Base Cover

Place the base cover, engage latches, and install twelve (12) screws.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features
4. Disassembly of the Base Cover
5. Battery Disconnection
6. WLAN Module Replacement
7. Adding a Square Rubber
8. Battery Reconnection
9. Reassembly of the Base Cover
10. Logistics for Replaced Modules

This document outlines the procedures for disassembling, maintaining, and reassembling a portable computing device, focusing on the replacement of its Wireless Local Area Network (WLAN) module and the general handling of its internal components. The device appears to be a laptop or similar portable computer, designed for user-level maintenance or repair by trained technicians.

Function Description

The device is a portable computer, indicated by its internal components such as a mainboard, WLAN module, battery, and a base cover that encloses these elements. Its primary function is to provide computing capabilities, which are supported by its various internal modules. The WLAN module, a key component addressed in this manual, enables wireless internet connectivity, allowing the device to communicate with networks without physical cables. The battery provides portable power, ensuring the device can operate untethered from a power outlet. The overall design suggests a focus on portability and ease of access for certain maintenance tasks.

Usage Features

While the manual primarily focuses on maintenance, it implicitly highlights several usage features. The presence of a WLAN module indicates that the device is designed for wireless connectivity, a crucial feature for modern portable computing. This allows users to access the internet, connect to local networks, and utilize cloud services from various locations. The battery system ensures mobility, allowing the device to be used on the go without constant access to a power source. The modular design, particularly for components like the WLAN module, suggests a degree of future-proofing and repairability, which can extend the device's lifespan and enhance user satisfaction by allowing for component upgrades or replacements. The base cover, which is removed and reinstalled, protects the internal components from dust, spills, and physical damage during normal use, while also providing a stable surface for the device. The careful instructions for prying open the base cover and handling internal cables emphasize the precision required for maintaining the device, which in turn contributes to its reliable operation during usage. The device's design, with screws and latches, ensures that the components are securely held in place during everyday use, preventing accidental disconnections or damage.

Maintenance Features

The manual provides a detailed guide for specific maintenance procedures, making it a valuable resource for servicing the device.

Disassembly of the Base Cover:

The initial steps involve the removal of the base cover, which is secured by twelve screws. This systematic approach ensures that the cover can be safely detached without damaging the internal components or the cover itself. The instruction to use a scribe to carefully pry open the base cover, starting from a specific point near the LCD hinge, is critical for avoiding damage to the latches and the casing. The visual cues, such as the yellow indication for the starting point and the red arrows for the direction of sliding the scribe, are excellent maintenance features that guide the user through a delicate process. This method ensures that all latches are released progressively, preventing undue stress on any single point. The final step of lifting the base cover from the left side and removing it in the indicated direction further emphasizes a controlled and safe removal process.

Battery Disconnection:

A crucial safety and maintenance step is the disconnection of the battery cable. This is highlighted as the first internal component to be addressed after the base cover is removed. Disconnecting the battery prevents accidental power surges or short circuits during subsequent maintenance tasks, protecting both the device and the technician. The clear visual of the battery cable and its connector makes this step straightforward.

WLAN Module Replacement:

The core maintenance feature detailed in the manual is the replacement of the WLAN module. This process is broken down into several precise steps:

1. Disconnecting Antenna Cables: The WLAN module requires the disconnection of its antenna cables (MAIN and AUX). The visual aid clearly shows the location of these cables and the direction for their removal, ensuring that they are detached without damaging the delicate connectors.
2. Removing the Securing Screw: The module is held in place by a single screw. The instruction to remove this screw is straightforward, allowing the module to be freed from its mounting.
3. Removing the Module: Once the screw and antenna cables are disconnected, the WLAN module can be carefully removed from the mainboard connector. This step is shown with a clear image of a hand gently lifting the module, emphasizing careful handling.
4. Inserting the New Module: The installation of a new WLAN module involves reversing the removal process. The manual instructs the user to insert the new module into the mainboard connector, ensuring proper alignment.
5. Securing the New Module: The new module is then secured with the single screw, ensuring it remains firmly in place during operation.
6. Connecting Antenna Cables: The MAIN (black) and AUX (white) antenna cables are reconnected to their respective pins on the new WLAN module. The color-coding and clear labeling (MAIN, AUX) are excellent maintenance features that prevent incorrect connections, which could impair wireless performance.

Adding a Square Rubber:

An interesting and specific maintenance feature is the instruction to place a square rubber (PN: GAZHR009010) on the WiFi connector area of the mainboard. This rubber is to be aligned with the pin of the WiFi connector and placed between the solder pin of the WiFi connector and a component. This suggests a design improvement or a corrective measure to prevent potential issues, such as short circuits or mechanical stress, enhancing the long-term reliability of the WiFi connection. This detail highlights a proactive approach to maintenance and component protection.

Battery Reconnection:

After the WLAN module replacement and rubber placement, the battery cable is reconnected. This step, reversing the initial disconnection, ensures that the device is ready to receive power once reassembled.

Reassembly of the Base Cover:

The final maintenance steps involve reassembling the device:

1. Placing the Base Cover: The base cover is carefully placed back onto the top assembly, ensuring it fits correctly.
2. Engaging Latches: The instruction to press along the sides of the base cover to engage all latches is crucial for a secure and flush fit. This ensures that the cover is properly sealed and protects the internal components.
3. Installing Screws: The twelve screws are reinstalled to secure the base cover, completing the reassembly process. The visual aid showing the locations of all twelve screws ensures that none are missed, providing structural integrity to the device.

Logistics for Replaced Modules:

The note regarding the handling of replaced WLAN modules for Quanta and Asplex (for EMEA) is an important logistical maintenance feature. It ensures proper inventory management, potential recycling, or further analysis of faulty components, contributing to quality control and supply chain efficiency. This indicates a structured approach to component replacement beyond just the physical act of swapping parts.

Overall, the manual provides a comprehensive and visually guided approach to maintaining the device, particularly for WLAN module replacement, emphasizing precision, safety, and proper component handling.

Acer Chromebook 11 C733 Specifications

General

Operating System	Chrome OS
Processor	Intel Celeron N3350
RAM	4 GB
Display Size	11.6 inches
Display Resolution	1366 x 768
Graphics	Intel HD Graphics 500
Battery Life	10 hours
Wireless	802.11ac Wi-Fi
Bluetooth	Bluetooth 4.2
Color	Black
Processor Speed	1.1 GHz
Ports	USB Type-C, USB 3.0, headphone/microphone combo
Weight	1.26 kg (2.78 lbs)