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Difficulty: MediumLaptop Display Components and Features

A technician is replacing a damaged lid enclosure on a modern laptop. While disassembling the upper screen assembly, the technician notes several wiring harnesses routed from the system motherboard through the display hinges into the upper housing. Which TWO of the following components are typically housed within the upper display assembly and require cabling routed through the hinges? (Select TWO.)

  1. Wi-Fi and Bluetooth wireless antenna leadsAnswer
  2. Integrated webcam and microphone arrayAnswer
  3. C
    High-voltage display backlight inverter board
  4. D
    SO-DIMM system memory module
  5. E
    M.2 NVMe solid-state storage drive

Answer

The Wi-Fi and Bluetooth wireless antenna leads and the integrated webcam and microphone array are both positioned in the upper display assembly and routed through the display hinges.
The wireless antenna wires (Wi-Fi/Bluetooth) run around the perimeter of the screen to maximize RF signal transmission and reception. The integrated webcam and digital microphone are positioned at the top of the bezel. Both require dedicated wiring routed through the display hinges into the base chassis.

Step-by-Step Solution

1
Identify components physically located in the laptop display assembly.
Components at the top of the display enclosure include the wireless antenna leads (for optimal signal gain) and the webcam/microphone module.
Placing antennas high up inside the display frame reduces electromagnetic interference from motherboard components.
2
Evaluate internal chassis components versus display bezel components.
Components such as RAM modules and M.2 storage drives reside on the system motherboard in the base unit, not in the display lid.
High-bandwidth data buses like RAM and PCIe storage must remain as close to the CPU as possible on the motherboard.
3
Evaluate legacy vs modern display technologies.
Inverters are legacy components used only with older CCFL displays; modern LED and OLED screens do not use high-voltage inverters.
Modern LED backlights use low DC voltage directly from the motherboard video connector.

Key Concept

Laptop Display Assembly Components and Cable Routing
Estimated Time:1m 15s
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Topics

Laptop Display Components and Features

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