No Sound From Spk On Ac-3/Dts Decode; No Sound From Spk On Analog Dolby - Marantz SR-14EX Service Manual

No sound
from SPK on
AC-3/DTS decode
no
Pre output is
OK ?
yes
P704, P754
or SPK Relay
has problem
No sound
from SPK on
analog Dolby
no
Pre output is
OK ?
yes
P704, P754
or SPK Relay
has problem
Volume, HDAM, QC01
no
6ch Direct
or Preout Relay
is OK ?
has any trouble.(P104)
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
Error Mute circuite has
trouble.
To be check QR04
no
6ch 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(QK01) has any trouble.
QK01 can not output data
To be check QK04 or Lt/Rt
input on P604
DD,DTS,PCM
are shown?
96kPCM is
Q601, Q651
has trouble.
Volume, HDAM, QC01
or Preout Relay
has any trouble.(P104)
DIR(QR01) or QR06
has any trouble.
to be check
signal(SDIDR)
Clock outputs from QK01 are
any trouble
75
no
DIR(QR01) or Q601
has trouble
yes
DIR & Q601input is no problem
no
L/R DAC has trouble
OK?
yes
L/R DAC is no problem
no
Digital PCM Q601, Q651
ProLogic is OK
or DAC
?
has trouble
yes
Q601& DAC are no problem