Reference; Troubleshooting - NAD T 785 Manual Del Usuario

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.
No video display.
T 785 does not respond to HTRC 1 remote.
T 785 does not respond to front panel
commands or remote control.
Factory defaults for 10V version only : Press simultaneously Source + Front Input/MP
Factory defaults for 0V version only : 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 785 to its factory defaults.
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 785 digital input.
• Source component not configured for
multichannel digital output.
• Resolution setting is not supported by the
TV/Monitor.
• Batteries are flat or incorrectly inserted.
• IR transmitter window on remote or IR A/V
Receiver window on T 785 is obstructed.
• T 785 front panel is in very bright sunlight or
ambient light.
• Microprocessor error.
• T 785 may have over heated.
• 12V TRIGGER IN/OUT is set to AUTO position.

REFERENCE

TROUBLESHOOTING

POSSIBLE SOLUTIONS
• Check AC cable connection and outlet.
• Activate Speaker A (or Speaker B) by pressing
the corresponding front panel or HTRC 1
button.
• Check cables.
• Check 'Speaker Configuration' menu.
• Check power amp, cabling, and speakers.
• Select appropriate listening mode.
• Correct 'Speaker Configuration' 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.
• To restore video display, press and hold both
front panel buttons LISTENING MODE and
TONE DEFEAT and then release both buttons.
• Check batteries.
• Check IR windows and ensure clear line-of-sight
from remote to T 785.
• Reduce sunlight/room lighting.
• Power-down the T 785 via the rear 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.
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