Sony TCM-8EV - Page 10

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TCM-8EV
SECTION 4
ADJUSTMENTS
4-1.
MECHANICAL
ADJUSTMENTS AND
MEASUREMENT
PRECAUTION
I. Clean
th
e following
parts
with a de
natured-
alcohol-moistened swab :
rec
ord
/
playback
head
erase head
capstan
pinch
roller
rubber
belts
idlers
2. Demagnetize
the
record
/
playback
head
with
a
head
demagnetizer.
(Do
not
bring
the
head
de-
magnetizer
close
to
the
erase
head.)
3. Do
not
use a magnetized screwdriver for
the
adjustments
.
4.
After
the
adjustments,
apply
suitable Jocking
c
ompound
to
the
parts
adjusted.
power
s
upply
voltage : 3 V de
SPEED
CONTROL
knob:
center
click
Torque Measurement
Torque
Meter
Reading
Forward
27 -
48
g-c
m
(0.37 - 0.66 oz-inch)
Fast
Forward
55 -
75
g
-cm
and Rewind
(0. 76 - 1.03 oz
-in
ch)
Back Tension
2 - 4 g
-c
m
0.027 - 0.055 oz
-in
ch)
Tape
Tension Measurement
Meter
Meter Reading
Torque Meter
CQ-102C
CQ-201B
CQ-102C
5.
The
adjustments
should
be
performed
with
the
rated
power
supply
voltage
unle
ss
otherwise
noted.
CQ-403A More than 100 g (3 .53 oz)
Head
Height Adjustment
power
supply
voltage:
3V
de
Procedure:
1.
Prepare an
adjustment
cassette as
shown
below.
tape cassette
Cut
out
hatched
portions.
2.
In
record
mode
and viewing from
the
front,
adjust
the
head heights
to
eliminate
tape
curl
and
tape
twist
at
arrowed
portions.
~
erase
head
record/playback
head
~-Fl
'"'Ejj -
/~
3-578-138-01 (t=0.1)
3-578-138-11 (t=0.2)
Shim,
head
height
adjustment
(-'1
..
~
11~
-10
-
I
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