Denon HEOS AVR - Page 48

5. No audio output
(OPT)
7. No audio output
(LINE IN)
6. No audio output
(COAX)
Check the input of DIR (DIGITAL PCB)
Is the SPDIF signal OK?
[IC432 : 33pin]
Check the input of PLD (DIGITAL PCB)
[IC431 : 35pin] DIRA_MCLK
[IC431 : 36pin] DIRA_BCLK
[IC431 : 37pin] DIRA_LRCK
[IC431 : 38pin] DIRA_DATA
Check the input of PLD (DIGITAL PCB)
[IC431 : 35pin] DIRA_MCLK
[IC431 : 36pin] DIRA_BCLK
[IC431 : 37pin] DIRA_LRCK
[IC431 : 38pin] DIRA_DATA
Check the input of DIR (DIGITAL PCB)
Is the ANALOG signal OK?
[IC432 : 47pin] VINL
[IC432 : 48pin] VINR
Check the input of PLD (DIGITAL PCB)
[IC431 : 29pin] ADCA_DATA_INPUT
[IC431 : 30pin] ADCA_LRCK
[IC431 : 33pin] ADCA_BCLK
[IC431 : 35pin] ADCA_MCLK
Check the input of DIR (DIGITAL PCB)
Is the SPDIF signal OK?
[IC432 : 31pin]
Check the input of BUFFER IC (DIGITAL PCB)
Is the SPDIF signal OK?
[IC437, 2pin]
Check the input of Volume IC (DIGITAL PCB)
Is the ANALOG signal OK?
[IC480 : 45pin] LINE_IN_R
[IC480 : 46pin] LINE_IN_L
Check the input of BUFFER IC (DIGITAL PCB)
Is the SPDIF signal OK?
[IC435 : 13pin]
See "Check the input of DSP*1" in item 2
See "Check the input of DSP*1" in item 2
See "Check the input of DSP*1" in item 2
Check the soldering of peripheral parts.
If there are no abnormalities, [IC437 BUFFER IC] is
faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC432 DIR IC] is
faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC432 DIR IC] is
faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC480 Volume IC] is
faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC432 DIR IC] is
faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [IC435 BUFFER IC] is
faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [OPT terminal JK431]
is faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [LINE IN terminal
JK472] is faulty.
Check the soldering of peripheral parts.
If there are no abnormalities, [COAX terminal
JK472] is faulty.
YES YES
YES
OK
OK
OK
OK
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
NG NG
NG
Is there a connection between the TV and this
unit?
Is there a connection between the Input Source
and this unit?
Is there a connection between the TV and this
unit?
Connect TV to this unit according to "QSG".
Connect input source to this unit according to
"QSG".
Connect TV to this unit according to "QSG".
NO NO
NO
48
Caution in
servicing
Electrical Mechanical Repair Information Updating