Sony SRS-X99 Help Manual page 326

Help Guide
Troubleshooting
Personal Audio System
SRS-X99
The remote control does not function
Remove any obstacles between the remote control and the remote sensor on the speaker, and position the speaker
away from fluorescent lights.
Point the remote control at the remote sensor on the speaker.
Move the remote control closer to the speaker.
Batteries in the remote control are weak. Replace with new batteries.
There are no batteries in the remote control.
Related Topic
Inserting the batteries of the remote control
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