Trouble Shooting; No Power; No Sound From Spk On Analog Stereo Mode - Marantz sr-18 u Service Manual

11. TROUBLE SHOOTING

No Power

no
Standby LED
Lights up on
standby mode?
yes
no
FLD shows
"ERROR PWR1" ?
yes
no
Supply +15VA
to PY04?
yes
no
Supply +24V
to PY04?
yes
PY04 has problem.
QY01(92p or 93p) lnput level
is too low.
No sound from SPK on
Analog STEREO mode
no
Pre output is
active ?
yes
P704 or P754
has problem
Power supply circuit has
problem.
Check +5VL or
PDOWN signal.
Vkk or FL is not supplied
to PU04
no
Can P804
supply +15VA
?
yes
no
Can PS04
supply +24V ?
yes
Connection has
PS04 or Sub Transf (L002)
problem
Source Direct
is OK ?
yes
(Volume,HDAM & Power Amp
are OK)
Tone Control (P104)has any
problem
control is OK ?
P804,or Main Transf(L001)
has any problem
no
Test tone out
is OK ?
yes
(Volume , HDAM & Power
Amp are OK)
Analog audio input sel.
(PS04)has problem
63
yes no
Relay(LB03)
PB04 , or connection has
yes
has problem
no
Volume or HDAM or QC06
or Relay for Preout has any
problem
problem