Page 107 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

EXERCISE 144: Perform replacement of touch sensor and

finger print sensor in smartphones

Objectives

At the end of this exercise you shall be able to:
• To perform Replacement of touch sensor and finger print sensor in a Smartphone.

Requirements

Tools/Materials Equipments
• Screw driver 0.8 or 1.2mm - 1 No. • Replacement sensors - 1 No.
• Opening tools 200mm - 1 No. • Anti- strips wrist strap - 1 No.
• Tweezers 150mm - 1 No. • Adhesive strips or
• Heat gun or hair dryer 250mm - 1 No. adhesive remover - 1 No.

Procedure

Theory
Sensor

• sensors are the devices that detect changes or events in their environment and convert them into measurable
signals or outputs.
They come in various types and are used across industries for different purposes, such as monitoring temperature,
pressure, motion, proximity, light, sound and more.
Sensors play a crucial role in enabling automation, control systems, data collection, and decision-making
processes.
They provide input to electronic systems or microcontrollers based on the detected changes in the environment.
Examples of sensors include temperature sensors, pressure sensors, proximity sensors, motion sensors, light
sensors, and many others.
Touch sensors
There are 3 types of Touch screen sensors, they are resistive, capacitive, and surface acoustic wave sensors.
Touch sensors detect physical contact or touch on a surface and convert it into an electrical signal.
They are commonly used in touchscreens for smartphones, tablets, laptops, and other electronic devices.

90