Dolb
y
®
Mod
el CP6
50
T
rou
bles
h
o
ot
ing Char
t
Mai
n
ten
anc
e
and
T
roubles
hoot
ing
9-
10
S
y
mp
tom
Probable Cau
se
Recommended A
c
tio
n
NO SOUND I
N
SOM
E
FOR
M
A
TS
No anal
og
fi
lm
sound
(For
m
ats 01,04, or
05)
.
Fr
ont-
panel n
o
rm
al, D
o
lby
D
ig
ital
sound O
K
, and
nonsy
nc O
K
.
T
h
e ana
log
LED or ex
ci
te
r
lam
p or power
supp
ly
m
a
y
hav
e fai
led
or
the wr
ong
pr
o
jec
tor
m
ay
be selec
ted.
Solar
ce
ll
conne
ct
ions
m
ay
be loo
se o
r dam
ag
ed.
T
h
e rem
ote s
o
la
r c
el
l pr
ea
m
p
board used w
ith LED
analog
r
eade
rs m
ay
hav
e faile
d.
If
the sig
nal-
presen
ce LED
s ins
ide
th
e ac
cess
doo
r ar
e
not
fla
shing
, v
eri
fy
exci
te
r ope
ra
ti
on and
so
lar
ce
ll c
onne
ct
ions
as de
scr
ibed
abov
e. Subs
ti
tu
te k
nown work
ing
Cat. No
. 772
board.
No Dol
by Di
g
it
a
l s
o
und
(F
orm
at 10).
Front-
panel norm
al,
an
alog
sound
O
K
.
D
ig
ital
re
ade
r LED
not w
o
rk
ing
, D
o
lby
D
ig
ital deco
de
r
board C
at. No. 7
73 no
t i
n
st
all
ed o
r not
work
ing
, non-
D
o
lby
D
ig
ital
pr
int b
eing
p
lay
ed, f
ilm
not t
h
re
aded
corr
ec
tly
in read
er, rea
der f
ail
ure.
Ve
ri
fy
that
the
L
E
D
(o
r exc
ite
r l
am
p
) in t
h
e d
ig
ita
l f
ilm
read
er
is on.
V
er
ify
tha
t
the
prin
t y
ou ar
e pl
ay
ing
is
corr
ec
tly
th
read
ed t
h
roug
h t
h
e dig
it
al
rea
der
and
tha
t i
t
inc
ludes
Dolby
Dig
ita
l i
n
fo
rm
ation . I
f the CP65
0 ac
ce
pts a
Form
at 10 com
m
and, the di
g
ital s
ub-
sy
stem
is probab
ly
st
il
l wo
rk
in
g.
No sound on ex
tern
al
si
x
-track
input
(Form
at 11, 7
0
m
m
, extern
al Dol
by
m
odel DA20, or ot
her m
u
lt
ichan
nel
soun
d
sourc
es
), Fro
nt-
panel no
rm
al.
Cat No. 772
boa
rd de
fec
tiv
e. Wr
ong
form
at, ex
te
rna
l
dev
ice no
t r
ece
iv
ing
g
ood data. S
ix-
channel
inp
ut
connec
to
r no
t fu
lly
plug
g
ed in.
Check
exte
rna
l dev
ic
e fo
r a
udio ou
tpu
t. Re-
seat
the
six
-
channe
l c
onnec
to
r.
No sound i
n
non
sync
Nonsy
nc sour
ce no
t work
in
g
, nonsy
nc lev
el se
t
too f
ar
down, fau
lty
Cat.
No. 772
board. I
f nonsy
nc
is a u
se
r
form
at, i
s th
e i
nput
fr
om
Nonsy
nc 1 or Non
sy
nc 2?
Whic
h
ch
anne
ls
ar
e the sig
nals bei
ng
sent to?
A
re thos
e
power am
pli
fi
ers wo
rk
ing
?
Ve
ri
fy
outpu
t of n
onsy
nc s
ource
. Det
erm
ine f
rom
fron
t-
panel
di
spl
ay
which ch
anne
ls t
h
e ou
tpu
t i
s di
re
cte
d to
and
v
erify
tha
t powe
r am
plif
ie
rs
and s
p
eak
er
s fo
r th
ose
channe
ls
are
w
o
rk
ing
. A
fte
r check
ing
the
abov
e, ad
jus
t
nonsy
nc lev
el
in
set
up, ch
an
g
ing
both le
ft
and r
ig
h
t
channe
ls by
equal am
ounts.
P
o
w
er but
ton
il
lu
m
in
at
ed
.
Front-
panel
dark
. T
h
er
e is
soun
d.
Sy
stem
is in by
pass m
ode.
T
u
rn on
the CP6
50 wi
th t
h
e fron
t-
panel powe
r bu
tto
n.
Call
serv
ice
eng
inee
r
if
the
sy
ste
m
is sti
ll n
o
t o
p
er
at
ing
corr
ec
tly
.
