Deck Adjustment - Aiwa CSD-FD79 Service Manual

ELECTRICAL ADJUSTMENT - 4/5
QQ
3 7 63 1515 0

DECK ADJUSTMENT

Equipment and tools required
Measuring equipment
• Wow-flutter meter
• Oscillosope
• Tset tape:TTA-100/TTA-300(or TTA-310,320)
1. Tape Speed Adjustment
Requirements
Measuring equipments : wow-flutter meter (frequency counter )
Test Tape: TTA-100 (3KHz)
Test point: HP OUT
Adjustment point : MOTOR SFR
1) Connect HP OUT to the Wow - flutter meter.
2) Insert the test tape (TTA-100) to Deck2, FWD play back center of the tape
and adjust the MOTOR SFR until it becomes 3,000Hz
2. Wow – flutter Check
Requirements
Test tape: TTA-100 (3KHz)
Test point: HP OUT
Adjustment point : MOTOR SFR
1) Connect the HP OUT to the Wow – flutter meter.
2) Set the indicator to JIS and the mode to W&F(or RMS,UN WTD) of the Wow - flitter meter.
3) Play back thee center of the test tape (TTA-100) and check that it is below 0.35%.
TE
L 13942296513
3. Head Azimuth Adjustment
Requirements
Measuring equipment: Oscilloscope
Test Tape: TTA-300 (10KHz)
Test point: HP OUT/SP OUT
Adjustment point: Head azimuth screw
1) Connect the Test point to the oscilloscope of CH1(Lch) and CH2
(Rch).
2) Set the V mode of the oscilloscope to ADD.
3) Insert the test tape (TTA-330) to Deck1 ,FWD play back the
center of the tape and adjustment the head azimuth screw until the
waveform of the oscilloscope has reached the maximum when
playing back at 10KHz.
4) After the adjustment, bond lock (1600B) the screw.
www
.
http://www.xiaoyu163.com
±
20Hz.
x ao u163
y
i
http://www.xiaoyu163.com
2 9
8
WOW & FLUTTER METER
IN P U T
HP OUT
Q Q
3 6 7 1 3 1 5
co
.
-32-
9 4 2 8
MOTOR
Hz %
SFR
0 5 8 2 9 9 4 2 8
OSCILLOSCOPE
OUTPUT
CH1 CH2
TP8
TP9
RPH
Head azimuth screw
m
9 9
9 9