Panasonic VIERA TH-50PV500E Service Hints page 5

Protection Protection
Circuit
Operation
Power
LED
Blink
Mode
LED
Blinking
times Trouble
Mode
Defective
Board (Example)
ist
m
improved 37/42PA50E.PE50B |37/42PV500E,B| 50PV500E.B
i
1
IIC
communication
NG
Unknown
(
D
)
2
12V
down SOS
P,
D
3
3.3V
down SOS
D
4
Power
SOS
(Vsus,
5V down)
P
5
P5V
SOS
D, P, C,
SC, SS, Panel
(1C)
6
SCAN
Driver SOS(37",42")
+SC
Floatinq Volt. (50")
SC, SS, D,
P
(SC Enerqv
recovery)
SC, SU, SD, SS,
D,
P
(SC Enerqy recovery/ floatinq
volt.)
7
SC
Floating Volt.(37",42")
DATA
Driver
SOS
(50")
SC, SU, SD,
D,
P
(SC floating volt.)
SS,
D, C,
P
(SS Data Energy
recovery)
8
SUS
Driver
SOS
SS, SC, D,
P
(
SS Energy recovery
)
9 Soft-Ver. Combination
NG D
10 Tuner
Power SOS
PA, P, H,
DG,
Z,
TA, XV(*2)
PA,
P, H,
DG, GS,
Z,
TA, DV, XV(*2)
ii
Fan SOS
PB,
FAN
12
Sound SOS
PB,
Z,
H
LED
Blinking signal
\*
—
!
1.0s
3.0s
Note
(* 1
)
2-9
times
LED
blinking
become
to 1
time
in 1st
design.
So,
when
1
time
LED
Blinking
is
found, please
check
SOS
signal
that is
input to IC9003,
in
order
to
know
true
LED
blinking time.
Check
point
is
the connector's pin or IC9003's pin
as shown
in
the
following
table.
When SOS
signal
is
found,
please
refer to the flow chart of
its
trouble
mode
that the
SOS
signal indicates.
(*
2
)
XV
board
PE50B, PV500B
only.
Check
point
in
the case of
1
time blink
LED
Check Point location Check output
Blinking
Trouble Mode
connector No.
/
Pin No.
IC9003
(D board)
SOS
actual true
input port No. signal
2
12V down SOS
—
-
(R9047
in
D
board) IC9003_95 L
:
SOS
3 3.3V
down SOS
....
(R9007
in
D board) IC9003_94 L
:
SOS
4
Power SOS D25
or P25
/
16pin IC9003_98 H
:
SOS
1
5
P5V SOS
—
-
(R9048
in
D
board)
IC9003_93
L
:
SOS
6
SCAN
Driver SOS(37",42")
+SC
Floating Volt. (50")
D20
or
SC20
/ 11
pin
IC900392 H
:
SOS
7
SC
Floating Volt.(37",42")
DATA
Driver
SOS
(50")
D20
or
SC20
/
12pin (37"/42")
SS44
or
C44
/
19pin
(50")
IC900399
H
:
SOS
8
SUS
Driver
SOS
SS23
or
C23
/
9
pin (37")
SS32
or
C32
/
9 pin (42")
SS44
or
C44
/
9 pin (50")
IC900397 H
:
SOS
Panel
SOS LED
1-8 times
blink
<TH-37/42PA50E,PE50B>
Panel
SOS LED
1-8 times
blink
<TH-37/42PV500E,B>
SC
Board D Board