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ADJUSTMENT
PROCEDURES
L
L
GENERAL REMARKS
Before
the adjustments,
wipe offstains
onthe
tape con-
tatting
surfaces
of the parts and the belt with a soft cloth
soaked
in alcohol.
Trouble
may occur because
of oil and
grease
stains.
Carefully
handle
the belt because
grease
easily
attaches
to it. Then, check the used rubber
parts. If the rubber
has
deteriorated
or is scratched,
replace
the parts with new
ones.
EQUIPMENT REQUIRED
Vnlfvf
Frequency
Counter
DC Constant-voltage
Regulator
Dummy
Load (4Q)
Test Tapes
t
For Tape Speed
Adjustment:
Using Tape
.. .. . . . Mini-cassette
Tape of 18P thick
(A-BEX
SSC-1582)
Frequency
of Recorded
Linear
Sweep
Signal
. .
.
.. .. . .. .. .. .. . .. .. .. . .. .. .. .. . 4,575
- 3,925Hz
Recording
Level
. .. .. .. . .. .. .. .. . .. .. .. . .. .. .. . .. .. .. .. –lOdB
Recording
Time
.. .. .. .. . .. .. .. . .. . .. .. .. . .. .. . .. .. .. 84.5sec.
Recording
Tape Speed
4.75cm/sec.
(1-7/8 ips. )
i
For Head Azimuth
Adjustment
Using Tape
Mini-cassette
tape of 18P thick
(A-BEX
SSC-1584)
Recording
Signal
.. .. . . .. .. .. . ... . .. .. .. . .. .. . .. .. .. .. . .. . 4kHz
Recording
Level
. .. . .. .. .. .. .. . .. .. .. . .. .. .. .. . .. .. .. . . –lOdB
Recording
Tape Speed
. . 4.75cm/sec.
(1-7/8 ips. )
TAPE SPEED ADJUSTMENT
1.
Connect
a frequency
counter
to the earphone
jack
and
play
back
the above
described
test tape
for the Tape
Speed
Adjustment.
Frequency
Counter
3,000!iZ&5~o
I
Dummy
Load 4Q
EARPHONE
HEAD AZIMUTH ADJUSTMENT
1.
Connect
a VTVM
to the earphone
jack and play back the
above test tape for the Head Azimuth
Adjustment.
2.
VTVM
(Max.)
I
Dummy
Load 4fl
EARPHONE
Turn the azimuth
adjusting
screw
until the VTVM
reads
the maximum
point.
Adjustment
v
c>
RecordlPlay
Head
Q
/
Screw
x
g
3.
After the adjustment,
secure
the screw with paint or glue.
2.
Detach
the Battery
Compartment
Lid and turn the poten-
tiometer
[P501)
until
the
frequency
counter
reads
–3–
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