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Essential safety precautions to reduce the risk of electric shock, acoustic shock, and personal injury during use.
Guidelines for safe battery handling, installation, and disposal to prevent leaks and damage.
Advice on listening levels to prevent permanent hearing loss and acoustic fatigue.
Instructions on connecting power sources like batteries, DC plug-pack, or telephone handset power.
Steps for connecting the amplifier to the telephone line and a headset.
Guidance on setting initial controls for optimal performance with different telephones.
Procedures for making and receiving calls using the headset or handset.
How to use the mute button to control microphone audio transmission.
Steps to diagnose and resolve issues when no voice is heard from the other party.
Troubleshooting steps for when the other party's voice is too quiet.
Steps to diagnose and fix issues where the other party cannot hear your voice.
Diagnosing and resolving audio issues like echo, resonance, or squealing.
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General