NAD T775 owner manual Troubleshooting, Condition Possible Causes Possible Solutions

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Reference

TROUBLESHOOTING

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

Factory defaults for North American (AH) version : Press simultaneously Source+ Front Input/MP

Factory defaults for European (C) version : Press simultaneously Source+ Front Input/MP

Audyssey Auto Calibration settings along with other stored presets and settings will all be deleted upon restoring your T 775 to its factory defaults.

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