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Symbols indicating dangerous voltage, important instructions, and opening risks.
Instructions on product use, environment, cleaning, attachments, power, and accessories.
Protect power cords and take precautions against lightning and surges.
Do not defeat plug safety features; refer servicing to qualified personnel.
Warnings on electrical shock, fire, moisture, and temperature change impacts.
High voltages/currents require safe operation; avoid improper use.
Diagrams illustrating the rear panel connections for different models.
Explanation of the numbered connectors and controls on the rear panels.
Connect with correct cord/voltage, turn off before audio, fuses on back panel.
Using the rear panel switch or 12 VDC control voltage for power switching.
Pinout and usage of the PHOENIX connector for remote switching.
Detailed technical specifications for Bose Entero 440, 840, 4100, 4200, 4400 models.
Steps to diagnose and resolve issues with no sound, no power, or low output.
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