Reference; Troubleshooting - NAD T775 Owner's Manual

REFERENCE

TROUBLESHOOTING

CONDITION
No sound from all channels.
No sound from some channels.
No sound from surround channels.
No sound from Subwoofer.
No sound from Center channel.
No Dolby Digital/DTS.
T 775 does not respond to HTR  remote.
T 775 does not respond to front panel
commands or remote control.
Factory defaults for North American (AH) version : Press simultaneously Source
Factory defaults for European (C) version : Press simultaneously Source
Audyssey Auto Calibration settings along with other stored presets and settings will all be deleted upon restoring your T 775 to its factory
defaults.
4
POSSIBLE CAUSES
• AC power unplugged.
• Power not switched on.
• Outlet has no power.
• Speaker A (or Speaker B) is not activated.
• Faulty/missing cables.
• 'Speaker Configuration' channel (s) set to
"OFF".
• Power-amp or speaker-connections faulty.
• No surround listening mode is engaged.
• Surround-channels set to "OFF" on 'Speaker
Configuration' menu.
• Surround-channels level set too low on
'Speaker Levels' menu.
• Subwoofer is off, not powered or improperly
connected.
• Subwoofer set to "OFF" on 'Speaker
Configuration' menu.
• Sub level set too low on 'Speaker Levels'
menu.
• Source is a 2/0 (etc.). Dolby Digital or DTS
recording without center channel.
• Center set to "OFF" on 'Speaker Configuration'
menu.
• Center level set too low on 'Speaker Levels'
menu.
• Source's digital output is not connected to a
T 775 digital input.
• Source component not configured for
multichannel digital output.
• Batteries are flat or incorrectly inserted.
• IR transmitter window on remote or IR A/V
Receiver window on T 775 is obstructed.
• T 775 front panel is in very bright sunlight or
ambient light.
• Microprocessor error.
• T 775 may have over heated.
• 12V TRIGGER IN/OUT is set to AUTO position.
+ Front Input/MP
+ Front Input/MP
POSSIBLE SOLUTIONS
• Check AC cable connection and outlet.
• Activate Speaker A (or Speaker B) by pressing
the corresponding front panel or HTR 3
button.
• Check cables.
• Check 'Speaker Configuration' menu.
• Check power amp, cabling, and speakers.
• Select appropriate listening mode.
• Correct 'Speakers Settings or 'Speaker Levels'
settings.
• Power-up subwoofer, check Sub's AC outlet
or check connections.
• Correct 'Speaker Configuration' or 'Speaker
Levels' settings.
• Play a known 5.1-channel recording or select
Dolby Pro Logic IIx Music mode.
• Correct 'Speaker Configuration' or 'Speaker
Levels' settings.
• Check connections.
• Check source component setup.
• Check batteries.
• Check IR windows and ensure clear line-of-sight
from remote to T 775.
• Reduce sunlight/room lighting.
• Power-down the T 775 via the front panel
Power switch and unplug it from the AC
outlet.
• Wait five minutes, re-connect and power up.
• Switch 12V TRIGGER IN/OUT to OFF position.