ELECTRICAL ADJUSTMENT - 4/5
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
RequirementsMOTOR
Measuring equipments : wow-flutter meter (frequency counter )WOW & FLUTTER METER
Test Tape: TTA-100 (3KHz)Hz%
Test point: HP OUTINPUT
Adjustment point : MOTOR SFRHP OUTSFR
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? 20Hz.
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%.
3. Head Azimuth AdjustmentOSCILLOSCOPE
Requirements
Measuring equipment: OscilloscopeOUTPUT
Test Tape: TTA-300 (10KHz)
CH1CH2
Test point: HP OUT/SP OUTTP8
Adjustment point: Head azimuth screwTP9
1) Connect the Test point to the oscilloscope of CH1(Lch) and CH2
(Rch).
RPH
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 whenHead azimuth screw
playing back at 10KHz.
4) After the adjustment, bond lock (1600B) the screw.
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ACEC
