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SECTION 4
ADJUSTMENTS
1.
MECHANICAL
ADJUSTMENTS
PRECAUTION
Adjustment Position:
As seen
from
the cassette,
side (top) and MD
as seen
1.
Clean the following parts with a denatured-alcohol-moistened swab:
TC-KB70/KB77ES
record/playback head
pinch roller
head on (bottom).
erase head
rubber belts
capstan
idler
2.
Demagnetize the record/playback head with a head demagnerizer.
3.
Do not use a magnetized screwdriver for the adjustments.
4.
After the adjustments, apply suitable locking compound to the parts
adjusted.
Tape Path Adjustment
Note:
When using the adjustment methods for other
than
replacement
reasons,
please
do
not
tamper
unnecessarily
with
the
adjustment
screws
or
the erasehead
because
either
the
Supply pinch
Takeup
pinch
supply
pinch
roller
guide
or
the
record/
roller
Erasehead
Record/playback
roller
playback head will be made the standard tape
head
paths.
Moreover,
when
it is necessary
to
adjust and replace two or more of any of the
heads and/or
pinch rollers, replace them one
TC-K570
by one, completely
taking out the first tape
path, and then replacing the second one.
(TC-K670/K677ES)
Preparation :
1.
Mirror cassette
CQO09C
8-909~708-01
(or CQO012C 8-909-708-02)
If one does not have this, cut out the sections of
a 120-minute cassette shell as indicated below
head
@
and
use
that
cassette.
Record/playback
Takeup pinch
head
roller
Definition of Terms:
The figures are of a record/
playback head.
Height
Declination
Depth
Azimuth
Cut out
2.
Phillips screwdriver
(medium-size) :
For the head adjustment
screws
Blade-type
screwdriver
(large-size) :
For the supply pinch roller adjustment screws
3.
Pen light
4,
WS-48B
(3 kHz, 0 dB)
5.
P-4-A100
(10 kHz,-10
dB)
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