Deck Section - Aiwa XR-EM70 Service Manual

<DECK SECTION>
PWB MAIN
PATTERN SIDE
SFR351
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)
SFR352
ATTENUATOR
(0.5V)
INPUT OUTPUT
HP OUT
WOW&FLUTTER METER
Hz %
INPUT
Lch
Rch
GND
AC MILLIVOLTMETER
CENTER UNIT
AUX(L)
DUMMY
AUX(R)
LOAD
SPOUT(L)
SPOUT(R)
Ω
6
– 36 –
SP OUT
OSCILLOSCOPE
CH1 CH2
CH1 CH2
4
3
1 2
5
OUTPUT