Aiwa XR-EM70 Service Manual page 36

<DECK SECTION>
QQ
3 7 63 1515 0
PWB MAIN
PATTERN SIDE
SFR351
TE
L 13942296513
Prepare the following before adjusting the deck.
Preparation
• Measuring Device: Audio Signal Generator / Attenuator / Wow & Flutter Meter (Frequency Counter) / Oscilloscope / Millivolmeter /
Dummy Load (6 ohm).
1) Connect the set to the measuring device as shown in the following diagram.
2) Output 1V(1 kHz) from the generator and adjust the attenuator until AUX IN becomes 0.5 V.
3) Set AUX for FUNCTION and adjust the volume until the millivoltmeter value becomes 2 V.
AUDIO SIGNAL
GENERATOR
OUTPUT
(1KHz,1V)
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.
http://www.xiaoyu163.com
SFR352
CENTER UNIT
ATTENUATOR
(0.5V)
INPUT OUTPUT
HP OUT
WOW&FLUTTER METER
Hz %
x ao u163
y
INPUT
i
http://www.xiaoyu163.com
2 9
8
Lch
Rch
GND
Q Q
3 6 7 1 3 1 5
AC MILLIVOLTMETER
AUX(L)
DUMMY
CH1
AUX(R)
LOAD
SPOUT(L)
SPOUT(R)
Ω
6
co
.
– 36 –
9 4 2 8
1
SP OUT 5
0 5 8 2 9 9 4 2 8
OSCILLOSCOPE
OUTPUT
CH2
CH1 CH2
m
9 9
3 4
2
9 9