Advertisement
FIG.4
BOTTOM
VIEW OF
MECHANISM
WITH
f\NOTOR
IIOUNTING
PLATE
AND
PUSHBUTTONS
RE'VOVED.
Recording Bias
t
CM,
C45l
N0TE: Two color dots are
located
on
the
recording
head. The
top
color refers to Track 2
(adjust
Track
2
ness
at minimum.
3.
Adjust
C45
for
voltage
indicated
in
chart.
COLOR DOT
ON HEAD
VOLTAGE
BIue
YeIIow
Black
Brown
Orange
Red
Green
White
16.8V
p-p
tg.6v
''
22.4Y
',
23.9V
',
25.2V
',
26.6V
'r
29.0v
'r
30.9v
rr
I.
Connect
the
scope
to
point
@
anO
chassis.
Ca$;
the
bottom
color refers to Track
I (adjust
2.
Set
recorder to "Record"
and
"Track
2",
Loud-
c45).
Track I
I.
Removebottom
coverscreen andallow
recorder
to
operate
for
15
minutes.
2.
Connect
qcalibrated
scope
(low
capacity probe)
to point
@
and
chassis.
3.
Set
recorder to "Record"
and
"Track
I",
Loud-
ness
at minimum.
4.
Adjust
C44
for
voltage
indicated
in chart.
LUBRICATION
Additional
lubrication shouldnot
be
requiredfor
4.
Ear of
fast-forward
idler
mounting
lever (lI2).
a long
time, since the
mechanism has
been
lubricated
before leaving
the
factory.
However,
if
parts are
re-
5.
Grease cup under
flywheel
(69).
moved
for repair
or
replacement,
lubricate
them
with
light grease,
as
follows:
Lubricate
the
following with
a
clinging-type
oil:
l.
Push-button
bracket
shafts.
l.
Idler
shafts.
2.
Area
between
rewindtoggle
arm(ll2)
and
rib
on
2.
Toggle
tink joints.
motorboard
(128).
3.
Pivot joints.
3.
Surfaces
of
push-button brack'et
locking
slide
lever
(46).
4.
Capstan and
turntable
shaft bearings.
PAGE
6
Advertisement
