6 Troubleshooting
Error Action
No power Check both AC power cords
Check the power switch at the back of the unit
Check the mains fuses on the AC power cord receptacle
No sound
(general)
Check that your source is playing
Check that your amplifier is turned-on and speakers are connected
Check that the L1's volume setting is not too low
Check that the correct input is selected on your L1
No sound
(“7” is displayed)
Your L1 is muted (display area 2 7 must be off for the unit to output signal). Unmute using
first RC button
Lost in the settings? Restore factory setting and start your setup again
Software update fails Try Emergency Software Update procedure
If it fails, download the latest L1 firmware from www.ch-precision.com, prepare a software
update image on a FAT32 formatted USB stick and follow the Emergency Software Update
procedure again
USB flash drive for firmware
update is not detected by L1
Please try another brand of USB flash drive (e.g. Sandisk).
Troubleshooting
If the error cannot be corrected using the information from the above table, disconnect the unit from AC wall socket and from the
rest of your system and contact your authorized dealer for assistance.
Rev 1.0 L1 User Manual 45
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