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Tuning
lnstructions
CC 8015
Signal source
Equipment
setting
Signal
source settlng
Connection of
measuring instrument
Item
to
be tuned
Tuning,
Femarks
1)
Azimuth
screw off window
of
cassette slot
(2
screws).
Test
cassette
Dolby: OFF
10
kHz
AF
voltmeter
to OUTPUT
Azimuth screw
>
eft screw
(
right
screw
Maximum
and
phase balance
2)
Tape
speed
Test
cassette
Dolby: OFF
31
50
Hz
Frequency-counter
to OUTPUT
N/otor
rear
31
50
Hz
3)
Playback level
Test
cassette
Dolby
level
Dolby; OFF
4OO
Hz
AF
voltmeter
to OUTPUT
VR 103
LR
VR 104
R
500 mV
4)
RF
premagnetization
AF
generator
INPUT
righVleft
Dolby: OFF
Record:
ON
Fe
Tape
10 kHz
approx, 85
mV
-20d8
AF
voltmeter
to OUTPUT
Record
level
control maxlmum
50 mV
FeVR 107
R
VR
1OB
L
50 mV
(during
play)
5)
Recording level
AF
generator
INPUT
righVleft
Dolby: OFF
Record:
ON
Fe
Tape
400
Nz
approx, 85
mV
AF
voltmeter
to OUTPUT
Record
level
control maximum
500
mV
500 mV
(during
play)
VR 105
L
VR 106
R
Repeat
tuning points 4 and 5
until
the ditference between 400 Hz 10
kHz-20
dB
is
more
less
than 2 dB,
6)
Fine alignment
for
CrO2
and Metal
tapes
AF
generator
INPUT
right/
ett
Dolby: OFF
Record:
ON
CrO2
I\,4etal
'10
kHz
approx. 85
mV
-20d8
AF
voltmeter
to
OLJTPLJT
Record
level
control maxlmum
50 mV
50 mV
(during
play)
Cr
VR
256
N,4et.
VR
254
7)
RF
oscillator
Metal
cassette
Record:
C)N
Frequency
counter
al
erase head
L
111
85 kHz
8)
RF
trap
l\,4etal
cassette
Record:
ON
AF
voltmeter TP
3
toTP4
L
105
L
106
[/inrmum
9)
19
kHz
pilot-signal
filter
AF
generator
to
INPUT
Dolby: ON
Record:
ON
Metal Tape
19 kHz
approx. 80
mV
AF
voltmeter
to OUTPUT
L
101
L
102
Min
mum
10)
HX-PRO-coil
Record:
ON
l\,4etal
Tape
AF
voltmeter TP
5
toTPo
L
107
L
108
l\,4aximum
*
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