Lesson 3 - Basic Cellphone accessories

CELLPHONE ACCESSORIES (LESSON 3)

1. SWITCH - an electronic device that used to power on and off the phone

2. SPEAKER - an electronic device that converts electrical impulse to audio waves

3. MICROPHONE - an electronic device that converts audio waves to electrical impulse.

4. BUZZER - an electronic device that has an armature inside to produce sound.

5. VIBRA MOTOR - an electronic device that has an armature inside to produce vibration.

6. LCD- Liquid crystal display

Things To Remember when Dis assembling a Phone

ESD- Electrostatic discharge

ESD PREVENTION

1. HOLD PCB AT THE SIDE

2. USE MAINTENANCE PLATE

3. DISCHARGE ESD IN THE BODY

4. DISCHARGE CAPACITOR

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