Panasonic PT-LX270U / PT-LX270E / PT-LX270EA / PT-LX300U / PT-LX300E / PT-LX300EA Service Manual ▷ View online
PT-LX270 / PT-LX300 series
3-1
Chapter 3
Trobleshooting
Message
LAMP(Red)
TEMP(Red)
STANDBY LED
(Red)
(Green)
Standby
Normal(Power ON)
Cooling state
Flashing(0.5 Sec)
Power up
Flashing(0.5 Sec)
Firmware Download
Over Temp
Fan lock
Flashing(0.5 Sec)
Lamp Fail
Color Wheel Fail
Flashing(0.5 Sec)
3-1 LED Lighting Message
Steady light
No light
PT-LX270 / PT-LX300 series
3-2
3-2 Main Procedure
Start
Connect power cord,
analog or digital signal
cable properly
Does the power
LED light?
A.No power
troubleshooting
Is image OK?
C. Image
performance
troubleshooting
Yes
No
No Fault Found
Yes
No
End
Yes
Is remote
control OK?
D. Remote
control
troubleshooting
No
Yes
Does the lamp
ignite
B. Power
troubleshooting
No
Turn on the
projector
Yes
PT-LX270 / PT-LX300 series
3-3
3-3 NO Power troubleshooting
N
o
po
w
er
Tro
ub
le
sh
oo
tin
g
P
ro
pe
rly
c
on
ne
ct
p
ow
er
c
or
d
at
u
ni
t
an
d
A
C
p
ow
er
s
ou
rc
e
Is
th
e
po
w
er
c
or
d
co
nn
ec
te
d
se
cu
re
ly
a
t t
he
u
ni
t a
nd
th
e
po
w
er
s
ou
rc
e?
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
ma
in
b
oa
rd
J1
Pin
5§
5V
?
Is
th
e
po
w
er
s
ou
rc
e
pro
vi
di
ng
A
C
v
ol
ta
ge
?
R
e-
co
nn
ec
t o
r r
ep
la
ce
th
e
th
er
m
al
s
w
itc
h
S
up
pl
y
A
C
v
ol
ta
ge
(1
00
V
~2
40
V
)
R
ep
la
ce
th
e
ma
in
b
oa
rd
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
ke
yp
ad
b
oa
rd
J
1
Pin
1§
5.
0V
?
R
ep
la
ce
th
e
20
P
IN
F
P
C
c
ab
le
be
tw
ee
n
ke
yp
ad
b
oa
rd
a
nd
m
ai
n
bo
ar
d
R
ep
la
ce
th
e
ke
yp
ad
b
oa
rd
C
on
tin
ue
fu
nct
io
n
te
st
a
nd
re
fe
r
to
o
th
er
tr
ou
bl
es
ho
ot
in
g
on
ce
th
e
po
w
er
L
ED
li
gh
t
R
ep
la
ce
th
e
LV
P
S
D
oe
s
th
e
po
w
er
L
E
D
li
gh
t?
C
on
tin
ue
fu
nct
io
n
te
st
a
nd
re
fe
r t
o
ot
he
r t
ro
ub
le
sh
oo
tin
g
on
ce
th
e
po
w
er
L
E
D
li
gh
t
Y
es
Y
es
5.0V
5.0V
5.0V
N
o
N
o
0V
0V
0V
N
o
Y
es
ˣ
˼́
ˇ
ˣ
˼́
˄
ˣ
˼́
ˈ
ˣ
˼́
ˋ
ˣ
˼́
˄
ˣ
˼́
˅˃
˝˄
˝ˆ
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
ma
in
b
oa
rd
J3
P
in
20
§5.0
V?
PT-LX270 / PT-LX300 series
3-4
3-4 Power troubleshooting
P
ow
er
Tr
ou
bl
es
ho
ot
in
g
C
he
ck
L
ED
in
di
ca
to
r
Te
m
p
LE
D
li
gh
ts
M
ak
e
su
re
a
ll
co
nn
ec
to
rs
ar
e
co
nn
ec
te
d
pr
op
er
ly
M
ak
e
su
re
th
e
ci
rc
um
st
an
ce
(
ˈʳ̑ʳˆ
ˈ̓
˖ʼ
C
on
tin
ue
fu
nc
tio
n
te
st
a
nd
re
fe
r t
o
ot
he
r
tro
ub
le
sh
oo
tin
g
Te
m
p
LE
D
fl
as
he
s
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
m
ai
n
bo
ar
d
J6
/
J8
/J
10
P
in
1§
5.
5V
be
fo
re
Te
m
p
LED
fl
as
he
sΛ
R
ep
la
ce
th
e
fa
n
or
b
lo
w
er
R
ep
la
ce
th
e
m
ai
n
bo
ar
d
Ye
s
N
o
Is
p
ro
bl
em
so
lv
ed
?
N
o
Ex
ec
ut
e
FA
N
R
PM
ca
lib
ra
tio
n
Is
p
ro
bl
em
so
lv
ed
?
N
o
R
ep
la
ce
th
e
m
ai
n
bo
ar
d
Ye
s
Ye
s
La
m
p
LED
li
gh
ts
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
m
ai
n
bo
ar
d
J1
9
P
in
1§
4.
3V,
Pi
n3
§5
V,
P
in
4§
3.
7,
Pi
n5
§
5V
b
ef
or
e
La
m
p
LE
D
li
gh
ts
Λ
R
ep
la
ce
th
e
la
m
p
m
od
ul
e
Is
p
ro
bl
em
so
lv
ed
R
ep
la
ce
th
e
la
m
p
dr
iv
er
Is
p
ro
bl
em
so
lv
ed
?
R
ep
la
ce
th
e
m
ai
n
bo
ar
d
N
o
C
on
tin
ue
fu
nc
tio
n
te
st
a
nd
re
fe
r t
o
ot
he
r t
ro
ub
le
sh
oo
tin
g
Ye
s
C
on
tin
ue
fu
nc
tio
n
te
st
a
nd
re
fe
r t
o
ot
he
r
tro
ub
le
sh
oo
tin
g
N
o
C
on
tin
ue
fu
nc
tio
n
te
st
a
nd
re
fe
r t
o
ot
he
r t
ro
ub
le
sh
oo
tin
g
Ye
s
R
ep
la
ce
th
e
LV
P
S
N
o
Ye
s
La
m
p
LED
fl
as
he
s
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
m
ai
n
bo
ar
d
J2
0
Pi
n1
§1
.2
V,
Pi
n2
§0
.8
V,
b
ef
or
e
La
m
p
LE
D
fl
as
he
sΛ
Is
p
ro
bl
em
so
lv
ed
R
ep
la
ce
th
e
ph
ot
o
se
ns
or
bo
ar
d
R
ep
la
ce
th
e
m
ai
n
bo
ar
d
Ye
s
N
o
U
se
th
e
vo
ltm
et
er
to
m
ea
su
re
m
ai
n
bo
ar
d
J1
8
Pi
n1
/2
/3
/4
§6
V
be
fo
re
La
m
p
LE
D
fl
as
he
sΛ
N
o
N
o
R
ep
la
ce
th
e
co
lo
r w
he
el
Ye
s
O
nl
y
Po
w
er
L
ED
li
gh
t r
ed
R
e-
as
se
m
bl
e
or
re
pl
ac
e
th
e
la
m
p
co
ve
r
Is
p
ro
bl
em
so
lv
ed
R
ep
la
ce
th
e
in
te
rlo
ck
sw
itc
h
Ye
s
N
o
Is
p
ro
bl
em
so
lv
ed
?
Ye
s
N
o
Is
p
ro
bl
em
so
lv
ed
Y
es
N
o
ˣ˼
́ˆ
ˣ˼
́˄
˝ˉ
˝ˋ
ˣ˼
́˄
ˣ˼
́ˆ
˝˄
˃
ˣ˼
́˄
ˣ˼
́ˆ
˝˄
ˌ
ˣ
˼́
ˈ
ˣ
˼́
˄
˝˅
˃
ˣ˼
́˄
ˣ˼
́ˆ
˝˄
ˋ
ˣ
˼́
˄
ˣ˼
́ˇ
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