Aiwa XR-EM20 Service Manual page 39

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<DECK SECTION>
MAIN C.B (PART SIDE)
C651 C652
L451
J104
TE
L 13942296513
1.TAPE SPEED ADJUSTMENT
Requirements
Measuring equipments : wow-flutter meter (frequency counter )
Test Tape: TTA-100 (3KHz)
Test point: C651(Lch),C652(Rch),GND
Adjustment point : Tape speed adjustment point (motor)
1) Connect Test point to the Wow - flutter meter.
2) Insert the test tape (TTA-100), play back center of the tape
and adjust the motor until it becomes 3,000Hz +3 / -2%.
2.WOW – FLUTTER CHECK
Requirements
Test tape: TTA-100 (3KHz)
Test point: C651(Lch),C652(Rch),GND
1) Connect the Test point to the Wow – flutter meter.
2) Set the indicator to JIS and the mode to W RMS (WTD)
of the Wow - flitter meter.
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3) Play back the center of the test tape (TTA-100) and check
that it is below 0.25%.
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TP
WOW&FLUTTER METER
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E/RP HEAD
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MOTOR
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WOW&FLUTTER METER
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INPUT
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