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- Measuring instrument
- EVM (DC Electronic voltmeter)
- Digital frequency counter
- Test Tape
- Tape speed gain adjustment (3 kHz, -10 dB); QZZCWAT
13.1.1. Tape Speed Adjustment (Deck 1/2)
1. Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side) the
middle portion of it.
2. Adjust Motor VR (DECK 2) for the output value shown below.
Adjustment target: 2910 ~ 3090 Hz
(NORMAL speed)
3. After alignment, assure that the output frequency of the DECK 1 FWD
are within ±60 Hz of the value of the output frequency of DECK 2 FWD.
13.1.2. Bias Voltage Check
1. Set the unit "AUX" position.
2. Insert the Normal blank tape (QZZCRA) into DECK 2 and the unit to
"REC" mode (use "
3. Measure and make sure that the output is within the standard value.
Bias voltage for Deck 2
REC/STOP" key).
14±4mV (Normal)
Fig. 1
Fig. 2
Fig. 3
65
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