Pioneer A-501R/HEWZ Service Manual - Page 21
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-550R,
A-450R
5.
ADJUSTMENTS
IDLE
CURRENT ADJUSTMENT
1.
Connect measuring
instrument
as
Fig.
5—1.
2.
Set the
VOLUME CONTROL
to
minimum.
3.
Set the
POWER
switch
to
ON.
4.
Adjust
VR201
(VR202)
so
that
the voltage
between TP1
(TP3)
and
TP2
(TP4)
becomes
20mV±3mV.
NOTE)
After
turning
on
the
power,
wait
at least
5 minutes
before
adjustment.
DC
DC
Voltmeter
r-i
Voltmeter
—
i—i
Fig.
5—1
Adjustment
Method
28