No Sound From Spk On Ac-3/Dts Decode; No Sound From Spk On Analog Dolby - Marantz SR7300 Service Manual

No sound
from SPK on
AC-3/DTS decode
no
Pre output is
OK ?
yes
P104
Error Mute circuite has trouble.
has problem
To be check QM44 or QR02
No sound
from SPK on
analog Dolby
no
Pre output is
OK ?
yes
P104
has problem
Volume(QE11)
no
7.1ch Direct
Pre out has any trouble.
is OK ?
To be check PS04
yes
P604 has trouble
no
Test tone is
OK ?
yes
DAC & DSP are no problem
no DIR(QR01) or QR06
DD,DTS,PCM
has any trouble.
are shown?
to be check
signal(SDIDR)
yes
Decoding is no problem
no
7.1ch Input
is OK ?
yes
P604 has trouble
no
Test tone is
OK ?
yes
DAC & DSP-out are no problem
no
Digital PCM
ProLogic is OK
?
yes
Decoding is no problem
ADC(QK30) has any trouble.
QD01 can not output data.
To be check QK30 or Lt/Rt
input on P604
DD,DTS,PCM
are shown?
Q600 has trouble.
Volume(QE11)
Pre out has any trouble.
To be check PS04
DIR(QR01)
has any trouble.
To be check
signal(SDIDR)
Clock inputs from QK30 are
59
no
DIR(QR01)
has trouble
yes
DIR & Q600 input is no problem
no
Digital PCM Q600 or DAC
ProLogic is OK
has trouble
?
yes
Q600 & DAC are no problem
any trouble