Aiwa NSX-SZ900 Service Manual page 36

ADJUSTMENT < DECK / TUNER / FRONT >
G DECK C.B
SFR1
1
A MAIN C.B
<DECK SECTION>
1. Adjusting Tape Speed (DECK 2)
Requirements
• Measuring Device: WOW & FLUTTER Meter (Frequency Counter)
Test Tape: TTA-100 (3 kHz)
Test Point: HP OUT (J101)
Adjustment Point: SFR 1
1) Connect the WOW & FLUTTER Meter to the HP OUT.
2) Insert the test tape (TTA-100) into DECK 2, FWD playback the centre of the tape and adjust SFR1 until
it becomes 3,000 Hz ± 5 Hz.
3) RVS playback and check that ± 45 Hz is added according to the FWD speed.
2. Checking Tape Speed (DECK 1)
Requirements
Same as number 1
1) Insert the test tape (TTA-100) into DECK 1, playback the centre of the tape and check that the speed is
within ± 45 Hz according to the speed of DECK 2.
RVS
7
SFR351 SFR352
– 36 –
4
FWD
J101
WOW &FLUTTER METER
INPUT
HP OUT
4 7
5 8
6
9
1
2
3
Hz %