Bose Acoustic Wave AW-1 Manuel - Page 12
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7.2 Adjust the cassette deck's motor to
3kHz measured at the auxiliary output.
8. Dolby Level Adjustment
8.1 Insert a 400Hz, 0db 200nWb/m test
tape (MTT-150) into the cassette deck and
press play.
8.2 Adjust RV503 (left channel) and RV504
(right channel) for 300, +36, -32 mV mea-
sured at the auxiliary output.
9. Recording Level Adjustment
9.1 Connect the positive side of a dc meter
to pin11 for the right channel measurement
and pin3 for the left channel measurement.
Connect the negative side of the dc meter
to pin7 of P100/ J600.
9.2 Insert a blank tape into the cassette
deck and press the record and play buttons
simultaneously.
9.3 Apply a 400Hz signal at a level to
obtain a 200mV level at the auxiliary out-
put.
9.4 Adjust RV505 (left channel) and RV506
(right channel) for .59mVdc measured at
P100/ J600.
10. Bias Level Adjustment
10.1 Connect the positive side of a dc
meter to pin11 for the right channel mea-
surement and pin3 for the left channel
measurement. Connect the negative side of
the dc meter to pin7 of P100/ J600.
10.2 Insert a blank tape (normal bias) into
the cassette deck and press the record and
play buttons simultaneously.
10.3 Adjust RV501 (right channel) and
RV502 (left channel) for 6.5mV measured
at P100/ J600.
TEST PROCEDURES
12
STANDARD
SIGNAL
GENERATOR
TEST
LOOP
STANDARD
SIGNAL
GENERATOR
Figure 3. AM Test Setup
The equivalent field intensity is 26dB less
than the generator output level or 1/20
the output voltage.
(TOP VIEW)
60cm
BAR
ANTENNA
(SIDE VIEW)
th
of