14
N
0
52 RefeReNce PReamPlifieR
/
Owner’s Manual
tROubleshOOting
audio HaS a HuMMiNg SouNd
Disconnect components one at a time to isolate the problem.
Once the problem is identified, make sure the problematic component is properly grounded and connected to the same electrical circuit as
the N
0
52.
voLuMe CaN’t Be Set to MaXiMuM
You have the option of establishing a maximum volume level in the Setup menu. If this option is set, it can prevent the N
0
52’s maximum volume
level of 80.0 from being reached. Refer to
Volume Control / MaxVol on page 7 for more information.
FRoNt-paNeL diSpLay Not woRkiNg
Verify that the Intensity parameter in the Setup menu is not set to Off.
No CoNNeCtivity via etHeRNet
Verify that the network cables are properly connected between the router, switch or hub and the N
0
52. If you have connected directly to a computer,
verify that the computer network cable is in the correct port.
Verify the age of the router, switch or hub. If the router, switch or hub is more than ten years old, there may be a communication issue with the
N
0
52. Power cycle the N
0
52 and use a newer router, switch or hub between the network and the N
0
52.
iF aLL eLSe FaiLS…
Power cycle the N
0
52 with the Controller’s rear-panel Power switch, waiting at least 10 seconds between powering the N
0
52 off and on.
Restore factory-default settings (See
Advanced: Config / Restore on page 9).
Contact your authorized Mark Levinson dealer.
Contact Mark Levinson Customer Service at 781-280-0300 or www.marklevinson.com.
