Marantz SR-14 Service Manual page 38

No sound
from SPK on PCM
STEREO(Digital In)
no
Pre output is
OK ?
yes
P704 or P754 has problem
No sound
from SPK on
AC-3/DTS decode
no
Pre output is
OK ?
yes
P704 has problem
Analog Stereo
no
and 6-direct
are OK ?
yes
Volume,Tone, or HDAM
(on P104)has any trouble.
Pre out relay has any trouble.
no
6ch Direct
is OK ?
yes
P604 has trouble
no
Test tone is
OK ?
yes
DAC & DSP are no problem
no
DD,DTS,PCM
are shown?
yes
Decoding is no problem
Error Mute circuite has
trouble.
To be check QR04 or QR05
Encode status
LED shows ?
Source Direct
Test tone is
DSP(Q601) input stage has
any trouble.
to be check QR06
Volume,Tone, HDAM or
Pre out relay has any trouble.
To be check P104
DD,DTS,PCM
DIR(QR01) or QR06
PCM S-Dirct
has any trouble.
to be check
signal(SDIDR)
Q601 or Q651 has trouble.
64
no
DIR circuite(P604)
has any trouble
yes
no
DAC circuite(P604)
is OK ?
has any trouble
(DIR is no problem)
yes
no
DSP (Q601 or Q651)
has any trouble
OK ?
(DAC is no problem)
yes
no
DIR(QR01) or Q601
has trouble
are shown?
yes
DIR & Q601input is no problem
no
L/R DAC has trouble
is OK?
yes
L/R DAC is no problem