Denon PMA-300V - Method of Adjustments; Idle Current Adjustment Procedure

———es
___
ss.
PMA-300vV
BE
METHOD
OF
ADJUSTMENTS
When
marking
adjustments,
be
sure
the
power
supply
is
at
the
rated
voltage
and
the
room
air
is
in
normal
condition
With
respect
to
temperature
and
humidity.
|
|
IDLE
CURRENT
ADJUSTMENT
(Fig.
3)
|
1.
Keep
the
unit
away
from
direct
wind
blown
by
an
air-conditioner
and
an
electric
fan,
and
keep
the
unit
under
normal
conditions.
Adjust
the
range
of
ambient
temperature
to
15:30
C.
2.
Set
the
following
switches
as
follows:
@®
POWER
(power
switch)
to
off
e@
VOLUME
(VOLUME
CONTROL)
to0(
f)
)
e
SPEAKERS
(speaker
terminal)
to
no
load
(speakers
disconnected)
7
3.
Remove
the
top
cover
and
connect
a
DC
digital
voltmeter
to
the
test
points
of
ETC9067
(Power
Amp
units)
(between
the
positive
terminal
TP
@
(R89)
and
the
negative
terminal
TP
©
(R91),
and
between
the
positive
TP
@
ree)
and
the.
negative
terminal
TP
©
(R92)).
4.
(1)
Connect
Power
cord
to
AC
outlet,
and
turn
Power
Switch
“on”
(m=).
Within
10
seconds
turn
VR5
(Leh)
and
VR6
(Rch)
clockwise
so
that
the
DC
voltmeter
reads
2.0
+0.1
mVDC
:
(2)
Then
after
5
minutes
warmup
adjust
VR5
and
VR6
so
that
the
DC
Voltmeter
reads
5+0.5mvV
(3)
And
after
15
minutes
warmup
adjust
VR5
and
VR6
so
that
the
DC
Voltmeter
reads
8t3mvV
Front Panel Side
Fig. 3