Denon AVR-4520, Service Manual

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4. AUDIO
4.1. AUDIO CHECK
Audio output NG.
Refer to " Audio Check PATH " (117 page).
Check ANALOG audio BLOCK.
Check Digital audio BLOCK.
Check ADC BLOCK
Check HDMI BLOCK.
Check other factors.
Check HDMI BLOCK.
Check Digital audio BLOCK
CHECK1 INPUT SURROND MODE SOURCE
Audio output OK? ANALOG 2CH
DIRECT
ANALOG
CHECK2 INPUT SURROND MODE SOURCE
Audio output OK? COAX or OPT
Don't care
Legacy
(PCM2ch or DolbyDigital or dts…)
CHECK4 INPUT SURROND MODE SOURCE
Audio output OK?
HDMI Don't care
Legacy
(PCM2ch or DolbyDigital or dts…)
CHECK6 INPUT Connect
AVR's (connected in HDMI) audio
output OK?
HDMI
This unit's HDMI OUT → Other AVR's HDMI IN
Setting SURROND MODE SOURCE
CEC STANDBY
Don't care
HBR audio(DolbyTrueHD or dtsHD MA)
CHECK5 INPUT SURROND MODE SOURCE
Audio output OK?
HDMI Don't care
HBR audio
(DolbyTrueHD or dtsHD MA)
CHECK3 INPUT SURROND MODE SOURCE
Audio output OK? ANALOG 2CH MULTICH STEREO ANALOG
YES
YES
YES
YES
YES
NO
NO
YES
(Digital audio Block is OK)
NO
NO
NO
NO