Specifications

or
F
t
h
F
F
F
F
h
I
F
F
F
Ir
F
I
I
t
MINOR
REPAIRS OF
TIS SOUND SYSTEM
PARTS
OF SYSTEM
PROBABIE
CAUSES
Amplifier
fuse
blown
(see
page
J0).
The
wiring has
come loose
at
the
annnt
i
-
fier
connection
plug
(e) (see
page
J1).
Faulty
speaker or
break i-n the
speaker
conneetion cab1e.
Faulty
XCCBI
=
L2AX7
(r)
t,tfe.
Rvni t or I
qmn
hrrrn*
n..i I ooo ^- -^ zn\
raey
wur rr u vu u
\
DsE
I/4€3s
_/w
/
.
Faulty
8T,90
=
6AQ6
tube.
trtarll trr nhotnel on*ri n nol I
(
ooo ."oo
\
Jvv
}/u6u
zn\
]-prong
plW
(a)
or
shielded
plug
(c)
-a* ^1"^^^^ i^ f..--
'
rruL
IrruSgeu
-Lrr
tuI-Ly
lSee
page
,L/.
-
Faulty
EF86
=
6267
(I)
tube.
-
7-prong
ptug
(a),
4-prong
plug
(u)
o"
chio'lAarr ^f..- fd)
nnt nlrrqqod in
f..rr'-
-rt !vfusu y!q6
\
q
/
rrv
u
-t,tu66uu
rrr I
Url,y
.
/ ^ -- \
\5ee
page
,ar.
Faulty ELB4
=
6Ba5
(I
or
II)
or
ECCB,
=
I2AX7
(I
or
TT)
tubes,
tr\qrrl *rr cnoolron
-
Faulty EFB6
=
6267
(II)
tube.
tr':rrl trr nhninc-l entri o cel-l
(
soe n:qp
vLrr\Uvvfabv
30).
Upper
sfit in opti-cal
sound
head
plugged
up;
it should be cleaned as descri-beal
on
page
29.
Pick-up
has
too
1ow inpedance or
defi-
vers insufficient output
(
such as
mag-
netic
pick-ups
requiring
preamplifier)
;
trrr nnnnootino i t l:n thc m-i nronhone
vrJ vvrurvv
input.
Sound has been recorded at too
1ow
an
input level or
qual,ity
of magnetic
sound
track
is
poor
(
see
pages
2L
-
22
arld
)Y).
Magnetj-c,
sound
head is dirty
and must
be
cleanbd accordlng to instmctions
on
page
28.
Power
supply
voLtage is too
low
(
see
page
5), check
it with a voftmeter,
lower loop too large; form the
loop
on
a 1evel with the
engraved
sign
on
the
housing.
No
sound
at
all,
Sor-rnd weak
dist orted.
No
sound or
sound weak.
Sor:nd
weak.
Output
power
low.
Lack
of
treble
Poor
s;mchro-
nization
AFFECTED
Af1
|
-,
(
exciter
lamp
will not
ragnr
up/.
All
(exciter
lamp lights
up).
0n*i nq'l cnrrrn -^nrOdUCtiOn
(other
channels
in order).
Magnetic
sound
f i nr
reproduc-
Alt.
Ontieal sound nenroduction
uv\!r\4
r
vP
qnd
min nnnlrnna /Pl .-t-+^-\
u vvu/
f ronrnrlrraJ--i nn frnm ni nlr-r rn
nr iqno ranordino
ic oan^ll
ucj,u t
uvvt
uf rr6 aD
€5uvu
/
.
Onti a:'l snrrnd ron16dqgf,i91
(
other
channels
in
order).
Reproduction from
pick-up
or tape recorder.
fJ
Magnetic
sound
playback.
all.
Optical
or rrBgnetic sound
reproduction.
Optical sound
reproduction.
-
Quality
of
opticaf sound track
is
poor.
-
Fidelity
(
slit control)
knob is
wrongty
adjusted
(see
page
16).
t,