Denon HEOS AVR Service Manual page 49

8. No audio output
*Only Analog Direct Mode
(LINE IN)
Is there a connection between the Input Source
and this unit?
YES
Check the input of Volume IC (DIGITAL PCB)
Is the ANALOG signal OK?
[IC480 : 45pin] LINE_IN_R
[IC480 : 46pin] LINE_IN_L
OK
Check the connection of [Connector CN32A] (DIGI-
TAL PCB)
[CN32A : 1pin] SR_OUT
[CN32A : 3pin] SL_OUT
[CN32A : 5pin] C_OUT
[CN32A : 7pin] FR_OUT
[CN32A : 9pin] FL_OUT
[CN32A : 11pin] SW_OUT
OK
See "Check the input of Digital AMP IC*2" in item
2
NO
Connect input source to this unit according to
"QSG".
NG
Check the soldering of peripheral parts.
If there are no abnormalities, [LINE IN terminal
JK472] is faulty.
NG
Check the soldering of peripheral parts.
If there are no abnormalities, [IC480 Volume IC] is
faulty.
9. No audio output
(AUX IN)
Is there a connection between the Input Source
and this unit?
YES
Check the input of Volume IC (DIGITAL PCB)
Is the ANALOG signal OK?
[IC480 : 41pin] AUX_IN_R
[IC480 : 42pin] AUX_IN_L
OK
Check the input of DIR (DIGITAL PCB)
Is the ANALOG signal OK?
[IC432 : 47pin] VINL
[IC432 : 48pin] VINR
OK
Check the input of PLD (DIGITAL PCB)
[IC431 : 29pin] ADCA_DATA_INPUT
[IC431 : 30pin] ADCA_LRCK
[IC431 : 33pin] ADCA_BCLK
[IC431 : 35pin] ADCA_MCLK
OK
See "Check the input of DSP*1" in item 2
49
NO
Connect input source to this unit according to
"QSG".
NG
Check the soldering of peripheral parts.
If there are no abnormalities, [LINE IN terminal
JK471] is faulty.
NG
Check the soldering of peripheral parts.
If there are no abnormalities, [IC480 Volume IC] is
faulty.
NG
Check the soldering of peripheral parts.
If there are no abnormalities, [IC432 DIR IC] is
faulty.