Extron Electronics VN-MATRIX User Guide - Manual (Page 57)

VN-MATRIX User Guide Section 3: System Configuration
I458GB issue 6 Page 57
Display Checkup
Most problems in a VN-MATRIX system will manifest themselves as some kind of disruption of the
target display. Use this checkup as a starting point to trace common problems, either with the
decoder/display or elsewhere in the system.
Is
th
e targe
t di
sp
lay
co
mp
lete
ly
bl
ank
?
STAR
T
YES
NO
Ch
ec
k th
e P
O
W
E
R
ind
ic
ato
r
on
the
VN-MA
T
RIX D
eco
der... UNL
IT
LI
T
FLAS
HING
W
hat’
s the
p
ro
ble
m?
Che
ck
the
STA
T
US
indi
ca
tor
o
n the
En
co
der...
UNL
IT
FLAS
H
ING
NO
P
O
WE
R
Chec
k the
PS
U co
nne
cti
on t
o the
VN-
M
A
T
RIX Deco
der
.
Chec
k for
‘g
re
en’
li
ght
on t
he P
S
U.
Chec
k mai
ns
ca
ble
, fus
e a
nd s
up
ply
.
PO
WE
R/T
H
ER
MAL
F
A
ULT
T
h
e un
it h
as
sh
ut do
wn du
e to
eit
her
a
power
s
upp
ly
fau
lt o
r
ove
r
temp
er
atur
e
con
dit
ion
.
Chec
k for
ob
str
uc
ted
ve
ntil
ati
on
gr
ill
es,
ex
ce
ss
iv
e a
m
bi
en
t
temp
er
atur
e.
Cyc
le
the
powe
r
off an
d on
to r
es
et
the uni
t.
If the
pr
obl
em
re
cu
rs
an
d am
bie
nt
temp
er
atur
e
is
with
in
li
mit
s, t
ry
us
in
g
a di
ffer
en
t PS
U.
NO
S
O
URCE
SE
LEC
T
E
D
, E
NCODER
OFFLINE
(
N
oda
ta S
pl
ash
di
sa
ble
d)
SOURCE
DATA
STRE
AM B
E
ING
RECE
IVE
D
Chec
k that
the s
ou
rc
e i
s
not
outp
utti
ng a
‘b
lan
k’
si
gn
al.
Chec
k that
the d
is
pl
ay
is
pow
er
ed
and
not
in s
tan
dby
mo
de.
Chec
k for
lo
os
e/i
nco
rr
ec
t
co
nnec
tions
or
fa
ulty
c
abl
es
bet
ween
the
Dec
oder
a
nd th
e di
sp
lay
.
If the
di
sp
lay
ha
s m
ult
ipl
e i
npu
ts,
ch
eck
th
at th
e c
orr
e
ct i
np
ut i
s
se
lec
ted
.
If the
re
are s
etu
p op
tion
s
for the
dis
pl
ay
in
put,
ch
eck
th
at the
se
ar
e
app
ro
pr
iate
for
th
e Dec
od
er
outp
ut
format
.
Chec
k that
the d
is
pl
ay
is
co
mpa
tib
le
with
the
Dec
ode
r o
utpu
t forma
t.
Me
ss
ag
e Di
spl
ay
ed…
“N
o S
our
ce
Da
tas
tre
am”
S
our
ce
im
age
is
s
tabl
e
bu
t ha
s a
co
lor
c
as
t
S
our
ce
im
age
is
un
sta
ble
or
c
or
rupte
d
Di
sp
lay
ed
im
age
is
fr
oz
en.
Chec
k that
the
Dec
oder
h
as
a s
our
ce
se
le
cte
d (
se
e pa
ge 5
3)
.
Chec
k that
the
Dec
oder
is
n
ot i
n di
sabl
ed o
r s
tan
dby
mo
de (
see p
age
52)
.
Chec
k that
the
cor
re
spon
din
g E
nco
der
de
vi
ce
is
op
er
ati
ng a
nd s
et u
p
co
rr
ec
tly b
y fo
llowi
ng th
e S
our
ce
Che
ck
up
(s
ee
page
58)
.
Chec
k for
ne
twor
k/
com
m
un
ic
ati
on p
ro
ble
ms
.
Chec
k for
lo
os
e/i
nco
rr
ec
t c
on
nec
tio
ns
or
faul
ty
ca
ble
s b
etwe
en th
e s
our
ce
and
the
Enc
od
er
.
Chec
k that
the
vi
su
al d
is
rupti
on i
s
not o
n th
e or
ig
in
al s
ou
rc
e s
ig
nal
.
Chec
k to s
ee
if th
e E
nc
oder
lo
ca
l moni
tor
ha
s t
he s
am
e c
olo
r c
as
t.
If s
o, c
hec
k that
the
cor
re
ct
c
olo
r s
pa
ce
has
be
en a
ppl
ied
to t
he s
our
ce
(s
ee
pag
e 52
).
Chec
k for
lo
os
e/i
nco
rr
ec
t c
on
nec
tio
ns
or
faul
ty
ca
ble
s b
etwe
en th
e Dec
od
er
and
the
dis
pl
ay
.
Chec
k that
the
or
igi
nal
s
our
ce
it
sel
f i
s n
ot fr
oz
en.
If th
e s
our
ce
is
O
K
,
the l
ik
el
y c
au
se
is
tha
t the
so
ur
ce
data
str
ea
m ha
s b
een
in
terr
u
pted
and
the
Noda
ta S
pla
sh
opti
on
is
di
sab
le
d. Thi
s wi
ll res
ult
in
the
Dec
ode
r d
is
pl
ayi
ng
the
las
t v
al
id s
ou
rc
e fr
am
e r
ec
ei
ved
. Fol
low
the c
he
ck
s
abo
ve
for
“
N
o S
our
ce
Data
str
ea
m
”.
Me
ss
ag
e Di
spl
ay
ed…
“N
o M
atc
hin
g O
utp
ut
Mo
de”
The De
co
der
is
r
ec
ei
vi
ng a
data
st
re
am b
ut i
s u
nab
le t
o fi
nd a
n ou
tput
mode
that
matc
he
s th
e s
ourc
e form
at. Mo
st
likel
y ca
use
is
th
at the
En
co
der is
us
ing
a c
us
tom
inp
ut m
ode
for
whi
ch
ther
e i
s no m
atc
hin
g ou
tput
mod
e on
the
Dec
oder
. I
f thi
s i
s
the c
as
e y
ou
wil
l n
eed
to c
re
ate
a c
ust
om o
utpu
t mod
e
(s
ee
pag
e 78
).
Im
age
is
st
abl
e bu
t ‘d
ro
ps
ou
t’ (
go
es
bl
ack
) or
free
zes
in
termi
tten
tly
Chec
k that
the
vi
su
al d
is
rupti
on i
s
not o
n th
e or
ig
in
al s
ou
rc
e s
ig
nal
.
The i
m
ag
e di
sr
up
tio
n c
oul
d be
ca
us
ed b
y d
ata p
ac
ke
ts b
ein
g l
os
t. Ther
e
may
be
in
suf
fic
ie
nt ne
twor
k ban
dwid
th av
ai
la
ble
r
esu
lti
ng
fro
m
hi
gh
netwo
rk
traffi
c o
r p
oor ne
twork
performa
nc
e. Tr
y in
cr
ea
si
ng
th
e c
o
m
pre
ss
io
n
se
tt
in
gs
or
adj
us
tin
g th
e ba
ndwi
dth
limita
tio
n s
etti
ngs
on
the E
nc
ode
r
(s
ee
pag
e 69)
.
Di
sp
lay
ed
im
age
is
no
tic
ea
bly
po
or
er
qua
lity
th
an th
e s
our
ce
, ei
the
r i
n
te
rm
s of
c
la
rit
y or
re
fr
es
h
ra
te.
The c
omp
re
ss
io
n/ba
ndwi
dth
li
mi
tati
on s
etti
ngs
on
the
En
cod
er
may
be
se
t
to
o
hi
gh
. T
ry
de
cr
ea
si
ng
th
e
co
mp
re
ss
io
n se
tt
in
gs
or
ad
ju
st
in
g t
he
ban
dwid
th l
im
itat
ion
se
ttin
gs
on t
he E
nc
ode
r (
see p
age
69)
.