Panasonic SA-AK78, Service Manual

Page: 12 / 84

1. Set the unit to “AUX” position.
2. Insert the Normal blank tape (QZZCRA) into DECK 2 and
the unit to “REC” mode (use “
●
REC/STOP” key).
3. Measure and make sure that the output is within the
standard value.
4. Insert the CrO2 tape (QZZCRX).
5. Repeat steps 2 and 3.
Bias voltage for Deck 2 (Standard
value) : 19 ± 4mV (Normal): 27 ± 5mV
(CrO2)
Erase voltage for Deck 2(Standard
value) : more than 100mV (Normal):
more than 150mV (CrO2)
1. Set the unit to “AUX” position.
2. Insert the Normal blank tape (QZZCRA) into DECK 2 and
set the unit to “REC” mode (
●
use “REC/STOP” key).
3. Adjust L1201 so that the output frequency is within the
standard value.
Standard Value: 98 ±8 kHz
Cassette Deck Section
11.1.3. Bias and Erase Voltage Check
11.1.4. Bias Frequency Adjustment (Deck 2)
11.2. Alignment Points
12
SA-AK78