Specifications

MINOR
REPAIRS OF
TIIE
SOUND
SYSTEM
NATURE
OF
BAEAKDOWN
PARTS
OF
SYSTEM
AT'FECTED
Optical
and magnetic
qnrrnd
ronrndrrnti n'
*- - --n.
IVT:mcfi n nl arrlr>nlr
Optical
sor-rnd
nonrndrrni i nn
Magjretic playback
Reproduction
with
pick-
up,
tape
recorrler or
microphone.
At I
Motor
stopped.
at I
Onl;'
h.n moror
is
n.urning.
Mlmol-i ru
qnrrnd
-^^a-ii--
r
s U vr ualiai
.
PROBAB],E
CAUSES
FiIm hes hpen noorlv cnlinarl
l,y .,vL
luqu
J-.noollror
Emulsion
deposits
ln
sound
drrm,
sprockets
or ro-L
Lers.
nt ^^- +L^-^ ^-r ^-^h
i-- / ^^^ ^- -^
vfvarl
urrYDs
qrrurlluS
\
5eu
paEe
28)
.
Cover
of
has
been
touches
Mqmol i n
clean
it
tions on
-
Cover
of
r^rrnnql rr
f
I
l-
)
l
t-
t
Wow.
Hlm.
Int
ermittent
crackles
or
interference.
Sound
recording
weak
and d i stnrl.oil
'
m-
moti n
,
uu
b!iu
u !u
track
not completely
Snrrnd ronnprlina ia ,-'^^1,
uatr€i
rD
wYdn
and
cannot
be increased.
Sound
is
recorded
with
marked
distortion
on
I a...1 --.
rvqr
lraDbdSss.
M-Lcrophone
record ings
rnamed
by background
noi
qo
f moalli
Lruruv
\
Llauilrrrel.y
l-n
mott-on)
.
optical
sound
head
wron
ol
v ronl : ced
gi.1i
the film.
sourd head
is dirty;
accorJing
to instruc-
page
28.
optical
sourrcl head
replaced.
For
instructions
on
changjng
the
ampLifier
tubes, see
pages
chansins the ennerentIv FqrrIt,, tnhe
does
not eliminate the
--.*..o-^.ovltv\ryyglLl:wrly
your
Bolex
dealer.
-
Power
supp
l;
L ransforme
r
p
I
aced
too near
projector.
-
Improper
shielding
of leads
e nnnpc l- inq :J. t rnhmontq i n nnn-
vv
Pr
v
jector.
Check
that leads
and
sh
i
e-Ld ing a re
prop'r1y
.onn^c
L-
ed to
jacks.
-
Bad
contact
in
a
plug
or
socket.
-
lamp
in
batt conilition.
-
Defective
motor. See
your
Bolex franchised
dealer.
Faultv El90
=
oAq) iuoe.
*
Faulty
EFB6
=
6267
(II),
ECoB,
12AX7
or El84
=
5BQ5 tubes.
-
Sound
is
recorded at
too
high
a leve1.
-
lvli c nonhnne h: s
[ggn
set
too
nar? n?^ionl-nz
o-
l1
and
40.
If
irnrrhl a nnncrrl I
above
chart.
,-
This
shoufd
also
be done
for
anv defects
not
listed in
the
26