Adjustment - Aiwa SX-DV1 Service Manual

ADJUSTMENT -1/1

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MAIN C.B PARTS SIDE
IC451
TE
L 13942296513
1. DC OFFSET Adjustment
Conditions:
• Measuring instrument : Oscilloscope (DC range)
Digital multi-meter
FUNCTION : DVD STOP state
Output side : Dummy resistance (8ohms) connection
Test point : SP OUT, J301 (FRONT Lch and Rch)
J401 (SURROUND Lch, Rch / CENTER / SUB WOFER)
Adjustment point : SFR301 (FRONT Lch)
SFR302 (FRONT Rch)
SFR401 (SURROUND Lch)
SFR402 (SURROUND Lch)
SFR451 (SUB-WOOFER )
SFR452 (CENTER)
1. As shown in the above figure, please connect SP OUT,J301(FRONT Lch) of a set.
2. Please adjust so that the display of digital multi-meter goes into 0 ±
please check whether the center of the noise of an oscilloscope is a center.
3. Please adjust other channels similarly. (Only SUB-WOOFER : lessthan 0 20mV)
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J401 J301
IC401
SFR402
SFR301
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IC301
SFR302
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3 6 7 1 3
DUMMY
LOAD
SET
SP OUT+
SP OUT–
8ohm
10mV. Moreover,
±
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-36-
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
OSCILLOSCOPE
DIGITAL MULTIMETER
CH1 GND
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co
XA-DV1
9 9
2 8 9 9
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