Sonos ZP80 User Manual page 168

Chapter A: Tips and Troubleshooting
Long amber,
short white,
repeat
Solid or flashing
red
ZonePlayer fault
shutdown (mute)
Diagnostics mode
A-11
If the fault condition
(above) is not remedied,
the ZonePlayer will
automatically mute itself to
prevent damage to the
ZonePlayer.
You may be instructed to
enter Diagnostics mode by
a technician when you call
Customer Support to
report a problem.
If you accidentally enter
diagnostics mode, press
the Mute button to exit.