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General| MP3 bit rates | 8 - 320 Kbit/s |
|---|---|
| Remotely operated | Yes |
| FM preset stations | 50 |
| Supported radio bands | FM |
| Built-in storage media | No |
| Audio formats supported | MP3, PCM, WMA |
| Image formats supported | Not supported |
| Internet radio services supported | - |
| RMS rated power | 20 W |
| Number of drivers | 2 |
| Product color | Black |
| Wi-Fi standards | 802.11g |
| Headphone connectivity | 3.5 mm |
| AC input voltage | 220-240 V |
| AC input frequency | 50 Hz |
Weight and Dimensions| Depth | 128 mm |
|---|---|
| Width | 387 mm |
| Height | 272 mm |
| Weight | 3640 g |
Lists essential service tools and diagnostic compact discs for repair.
Crucial information on ESD prevention and lead-free soldering practices.
Safety regulations and procedures for post-repair checks.
Step-by-step flowchart for diagnosing CD playback issues.
Procedures for both liquid and dry brush cleaning of the CD player lens.
Guidance for informing customers about checked sets with no faults found.
Techniques for measuring eye-pattern signals and laser current in the CD drive.
Procedure for measuring and compensating CD drive photodiode offsets.
Details on power, dimensions, wireless standards, and wired LAN.
Specifications for tuner, HDD/CD player, and USB playback features.
Technical details on amplifier output, impedance, and frequency response.
Identification and function of controls on the main unit.
Layout and function mapping for the 1-way remote control.
Layout and function mapping for the 2-way remote control.
Instructions for securely mounting the audio station units to walls.
Step-by-step guide for taking the unit apart for servicing.
Procedure to access and navigate the service mode diagnostics.
Performing hardware tests, LCD tests, and key panel/remote control tests.
Adjusting fan speed, LCD contrast, and performing resets via the service menu.
Retrieving module versions, MAC addresses, and deployed settings.
High-level overview of the system's architecture and component interactions.
Detailed wiring connections between various boards and connectors.
Schematic for the audio frequency and amplifier sections.
PCB layout showing the physical placement of components on the AF & AMP board.
Circuit diagram for the iPod and Ethernet interface module.
Circuit diagram detailing the button inputs and key matrix.
Circuit diagram for the remote control receiver and associated components.
Circuit diagram for the LCD control module and its connection to the main board.
Circuit diagram for the WiFi LED indicators and their control.
Guidance on component-level repair and board replacement for the HAS module.
Circuit diagram for the Melody processing unit within the Wessli-07 module.
Circuit diagram detailing the Flash memory and SDRAM components.
Circuit diagram for the Ethernet LAN interface and associated components.
Circuit diagram for the FM tuner and Radio Data System (RDS) functions.
Circuit diagram for the WiFi miniPCI card and its interface connections.
Circuit diagram for the IO interface, including UART, USB, and color parallel connections.
Circuit diagram for the audio frequency (AF) processing and output stages.
Circuit diagram for the Bluetooth module, including UART and SPI interfaces.
Circuit diagram detailing power supply circuits, voltage regulators, and DC-DC converters.
PCB layout diagram showing component placement for the Wessli-07 module.
Visual representation of the unit's assembly with numbered parts.
List of included accessories and their part numbers.
List of mechanical components and general parts for the unit.
Details on different versions of the WAC7500 model and their component variations.
