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Difficulty: EasyMobile Device Hardware and Display Issues

A desktop support technician is reviewing component characteristics for modern laptops and mobile devices before performing hardware servicing. Which of the following statements regarding mobile display and battery components are correct? (Select TWO.)

  1. OLED displays emit their own light at the pixel level and do not require a separate backlight inverter board.Answer
  2. Physically swollen lithium-ion batteries must be carefully removed and safely recycled rather than subjected to calibration routines.Answer
  3. C
    Dimming issues on modern OLED laptop screens are usually resolved by replacing the fluorescent backlight inverter.
  4. D
    Repeated deep discharge cycles should be performed to recalibrate and restore physically swollen laptop batteries.

Answer

OLED displays emit their own light at the pixel level without requiring a separate backlight inverter board, and physically swollen lithium-ion batteries must be safely removed and recycled rather than calibrated.
OLED panels rely on self-emissive organic light-emitting diodes for illumination, making backlights and inverter boards unnecessary. Additionally, swollen lithium-ion batteries are damaged components that present a risk of fire or leakage, making immediate, safe removal and recycling mandatory.

Step-by-Step Solution

1
Analyze mobile display technology characteristics
Identify that OLED displays do not use backlights or inverter boards because pixels generate their own illumination.
Inverter boards are exclusively used in older LCD displays that utilize Cold Cathode Fluorescent Lamps (CCFL).
2
Evaluate battery safety and maintenance procedures
Recognize that swollen lithium-ion batteries represent a dangerous physical fault that requires immediate retirement and safe disposal.
Calibration cycles are for software gas-gauge recalibration on healthy batteries, whereas swelling indicates irreversible hardware damage.

Key Concept

Mobile Display and Battery Hardware Characteristics
Estimated Time:45s
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Topics

Mobile Device Hardware and Display Issues

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