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General| Brand | Grundig |
|---|---|
| Model | EC 4790 CD |
| Category | Car Receiver |
| Language | English |
Lists and describes test equipment for diagnostics and calibration.
Provides step-by-step guidance on how to remove components from the car radio.
Detailed steps and requirements for calibrating radio circuits.
Details on adjusting volume, bass, treble, balance, and loudness.
Adjusting audio balance between front/rear and left/right speakers.
Guides on selecting FM/AM bands, stereo, TP, AF, and RDS features.
Storing and recalling stations using LEARN memory and presets.
Instructions for operating the CD player and DAT player.
Key details on CD playback, radio reception, RDS, and EON functionality.
Schematics detailing the internal electronic connections of the device.
Schematics for the front panel control interface.
Schematics for the CD drive mechanism.
Schematics for the radio frequency components.
Schematics for the main control processor and its connections.
Schematics for the audio frequency (amplifier) section.
Visual representation of component placement on circuit boards.
Lists and describes various configurable settings accessible via the EXPERT menu.
Step-by-step guide on how to modify settings within the EXPERT menu.
Details on activating, deactivating, and managing the car radio's security coding.
Information on time delays between attempts for coding security.
Information on required materials and optional accessories for fitting the unit.
Steps for inserting the mounting frame into the vehicle's dashboard.
Procedure for sliding the car radio into the installed mounting frame.
Instructions on how to safely extract the car radio using removal tools.
Guidance on connecting the car aerial and potential signal impact.
Information on the type and location of the fuse for the unit.
Details on power supply voltages and connection points for various functions.
Information on connecting front, rear, and active speakers.
Details on connections for CD changers, AUX input, and line output.
Steps to resolve issues where the radio fails to power on.
Troubleshooting steps if the security indicator light is not functioning.
Guidance for diagnosing and fixing problems with radio signal reception.
Solutions for frequent interruptions in radio broadcast reception.
Troubleshooting steps for when the CD player does not function correctly.
Diagnosing and resolving problems with the CD changer unit.
Steps to identify and fix issues with individual loudspeaker output.
