Sony STR-S5L - Level Meter and Bias Adjustments

AMPLIFIER
SECTION
RT602
RT7O2
Bias Adjustment
Setting:
VOLUME
control:
minimum
SPEAKER
switch:
OFF
Procedure:
Adjust
RT601
(L-CH)
and
RT70l
(R-CH)
for
26mV
DC at each
test
point.
L-CH
test
point
R-CH
test
point
(R-cH)
L-CH
test
point
RT60I
Level
Meter
Calibration
AF
oscillator
t.
600çl.
TAPE
or AUX
speaker
terminal
Turn
the
VOLUME
control
knob
for 2.83V
(lW)
reading
on
the
VTVM.
Adjust
RT702
(L-Cr{)
and
RT(r02
(R-CH)
so
that
the
sixth
element
of LED
mel.er
lights
up at
half
the
complete
brightness.
Make
sure
that
the sixlh
elc:ment
lights
up
com-
pleteiy
when
iucreasirrg
the
otrtput
level
of
the
attenuator
bY
ldB.
2.
3.
VTVM
l0kdt
VOM
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