GF82.60-P-3118FLJ Digital TV Tuner, Component Description

GF82.60-P-3118FLJ Digital TV Tuner, Component Description
- with CODE (527) COMAND APS with single DVD drive (with navigation system)
- with CODE (498) Japan version

Component Identification:

Location
The TV digital tuner is located at the right rear in the trunk behind the panel on a bracket.

Task
^ Receive signals
^ Demodulating and decoding signals
^ Transmitting signals

Receive signals
^ Direct line
^ Controller Area Network (data bus/CAN bus) (CAN) (with code (864) Rear entertainment system)
^ Media Oriented System Transport (MOST)

Direct line
- Power supply via circuit 31 and circuit 30g using one direct line each
- Electronic wake-up for MOST via direct line
- TV 1 antenna amplifier (A94/1) over a coaxial line
- TV 2 antenna amplifier (A94/2) over a coaxial line
- TV 3 antenna amplifier (A94/3) over a coaxial line

CAN (with code (864) Rear entertainment system)
The TV digital tuner is a telematics CAN (CAN A) subscriber and communicates with the following control units:
- Left rear display (A40/5)
- Right rear display (A40/6)
- DVD player (A40/4)

MOST
The TV digital tuner is a MOST subscriber and communicates through it with the COMAND controller unit (A40/3).

Demodulating and decoding signals
The TV signals received over the antenna amplifier are internally evaluated and separated into video and audio signals.

Transmitting signals
Signals are sent through the following lines:
^ Direct line
^ CAN (with code (864)
^ Rear entertainment system) MOST

Direct line
- Phantom voltage at following antenna amplifiers:
- TV 1 antenna amplifier
- TV 2 antenna amplifier
- TV 3 antenna amplifier

- Sends video signals over "Y/C" lines to the COMAND controller unit
- Sends video signals over "Y/C" lines to the DVD player (with code (864) Rear entertainment system)
- Sends audio signals over low-frequency lines to the DVD player (with code (864) Rear entertainment system)

CAN (with code (864) Rear entertainment system)
The TV digital tuner is a telematics CAN subscriber and communicates with the following control units:
- Left rear display
- Right rear display
- DVD player

MOST
The TV digital tuner is a MOST subscriber and communicates through it with the COMAND controller unit. Audio signals are sent to the COMAND controller unit or the sound system amplifier control unit (N40/3) (with code (810) Sound system).