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NAD 7155 - Amplifier Alignments; Idle (Quiescent) Current; Offset (Centering) Voltage

NAD 7155
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AMPLIFIER
ALIGNMENTS
1
2.
IDLE
(QUIESCENT)
CURRENT
Connect
mV
meter
(DVM)
from
TP
701
to
TP
702,
left
chan.
(from
TP
751
to
TP
752,
right
chan.)
Adjust
R
721,
left
chan.
(R
771,
right
chan.)
so
that
meter
reading
is
20
-
25
mVDC.
NOTE:
Reading
may
take
a
few
minutes
to
stabilize;
re-check
after
offset
adjustment
(next
step.)
OFFSET
(CENTERING)
VOLTAGE:
Adjust
R
708.
left
(R
758,
right)
so
that
voltage
at
spkr.
terminals
is
0
+
50
mVDC.
NOTE:
Perform
these
adjustments
with
no
load,
volume
minimum.
14
MEMO

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