Technics SU-V55A - Measurements and Adjustments; Control Positions and Equipment Used; Idling (ICQ) Adjustment

MEASUREMENTS AND
ADJUSTMENTS
Control
positions and equipment
used.
•
Volume
knob
0
(Minimum)
•
Main
speaker selector
off
•
Remote
speaker selector
off
•
Speaker impedance switch
.
. . .
•
DC
electronic
voltmeter (EVM)
8^2
~
16f2
IDLING
(ICQ)
ADJUSTMENT
1. Test
equipment
connection
is shown
in
figure.
Connect
the
DC
EVM.
on both
channels.)
2. Turn
the ICQ
control volume
(VR401,
VR402)
counter-clockwise.
3. Turn
ON
the
set when it
is cold,
and
15 sec.
later,
adjust
VR401 and
VR402 so
that
the
voltage
is
50mV Also,
check
that the
voltage
is
60
~
85mV
(standard:
80mV)
after lapse
of
10
—
15
minutes.
(Below
85mV
after lapse
of
60 min.).
d)
®
QQIQS
*®
d)'
Lch.
Rch.
DC
EVM
2SA1309
2SC3311
MA165,
MA167
SVDS10VB20F
SVDSR1K2LF
MA29WA
MA4062M, MA4033M
MA4160M
LN021315P
LN014314PH1
LN064316P