Check And Adjustment - Yamaha p1150 Service Manual
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Also See for p1150:
- Operating manual (45 pages) ,
- Operating manual (44 pages) ,
- Service manual (21 pages)
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PI
1
50/Pl
250/P21
50/P2250
(D
PA UNIT
REMOVAL
®
REAR PANEL ASSEMBLY REMOVAL/
OUTPUT
CIRCUIT
BOARD REMOVAL
CHECK
AND
ADJUSTMENT
BEFORE ADJUSTING
Be
sure to
wait
for
about
5
minutes
after
turning the
power
switch on,
in
order
for
the
main amp's
operation
to
become
stable.
1.
Idling
current
adjustment
2.
DC
offset
check
Adjust
VR201
(and/or
VR301)
so that the voltage
Check
that the voltage across the
SPEAKER
terminals
across the
test
points
TP203
and
TP204
on
the
PAA
cir-
$
and
©
is
0 ±
lOmV
in
a
no
signal
condition,
cuit
board
(and/or
TP303
and
TP304
on
the
PAB
circuit
board)
is
12mV
±
0.5mV
in
a
no
signal
condition.
FRONT
io
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