Page 186 - CITS - Electronic Mechanic - TT - 2024

ELECTRONICS MECHANIC - CITS

• Bluetooth remotes also don’t require line-of-sight communication.
Parts of a TV Remote Control
1 Buttons or Keys
• These are the physical buttons on the remote control used to perform various functions such as power on/
off, volume control, channel selection, menu navigation, and accessing specific features like input selection or
smart TV functions.

2 Battery Compartment
• This is where the batteries are inserted to power the remote control.
3 IR Transmitter (for IR Remotes)
• The IR transmitter emits infrared signals containing commands to control the TV. These signals are interpreted
by the TV’s IR receiver.
4 Circuit Board and Electronics
• The circuit board contains the electronics responsible for processing user inputs and generating the appropriate
signals for transmission.
5 Enclosure or Casing
• This is the outer shell of the remote control that houses all the components.
Functions of a TV Remote Control

1 Power On/Off
• Turns the TV on or off.
2 Volume Control
• Adjusts the volume level of the TV.

3 Channel Selection
• Changes the channel being viewed.
4 Menu Navigation
• Navigates through the TV’s menu system to access settings and features.
5 Input Selection

• Switches between different input sources such as HDMI, AV, or antenna.
6 Numeric Keypad
• Enters numeric values for channel selection or other functions.

7 Function Buttons
• Provides quick access to specific functions such as mute, subtitles, info, guide, etc.
IR Code Transmitter and Receiver
1 IR Code Transmitter
• The IR code transmitter emits modulated infrared light containing specific codes corresponding to each button
press on the remote control.
• These codes are interpreted by the IR receiver on the TV, triggering the desired actions.
2 IR Code Receiver

• The IR code receiver on the TV detects the modulated infrared signals from the remote control.
• It decodes these signals and sends corresponding commands to the TV’s internal circuitry to perform the
desired actions.

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CITS : E & H - Electronics Mechanic - Lesson 100 - 107