Panasonic SA-AK630E Service Manual page 74

4. 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.
14.1.2. Bias and Erase 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
Erase voltage for Deck 2 80mV (Normal)
14.1.3. Bias Frequency Adjustment (Deck 1/2)
1. Set the unit to "AUX" position.
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Fig.1
REC/STOP" key).
14±4mV (Normal)
Fig.2
Fig.3
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