Technics SU-V45A - Page 6

Hi
MEASUREMENTS
AND
ADJUSTMENTS
Control positions and equipment used.
@ Volume knob 0 (Minimum) @ DC electronic voltmeter (EVM)
@ Main speaker selector
@ Remote speaker selector
IDLING (ICQ) ADJUSTMENT
1. Test equipment connection is shown in figure.
Connect the DC EVM. on both channels.)
2. Turn the !CQ control volume (VR301, VR302)
counter-clockwise.
3. Turn ON the set when it is cold, and 15 sec. later,
adjust WR301 and VR302 so that the voltage is
30mV. Also, check that the voltage is 18 — 47mV
(standard: 44mV) after lapse of 10 — 15 minutes.
(Below 50mvV after lapse of 60 min.).
TP40 1 TP 402
Leh. Reh.
TP404
e Adjustment points
ICQ (bias)
44mV
=
a — —
a TP401 TESS TP402 Treo
© 1)
Time
10 30sec. 2 min. 15 min.
Relay ON
(4 ~6 sec.)
Front panel
AN7073 Qpin 2SA1123, 2SA992
28C1685, 2SC2631
cS
ee
er
SVINJM2043DD| Spin
HPC4570C 8pin
AN7062N 18pin
2SA1309 2SA1306 MA165, MA162 MA4062M LNO21315P
2SC3311 2SC3298 MA29WA MA2150B LNO14314PH1
SVDS3V20 Anode LNO64316P
<> <> SVDSR1K2LF -
Cathode Cathode
c Sy
8 E o—{g—0 A
Ca o—}g—_0 A Cao—fg— A Ca
Cc