Read Sharp PZ-43MR2E (serv.man9) Service Manual online
47
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE
(Continued)
No picture (4)
NO
YES
Is INPUT4
selected in Input
Source?
Select INPUT4
in Input Source
.
NO
YES
Is INPUT4
selected in Input
Source?
Select INPUT4
in Input Source
.
NO
YES
Is video signal
input a
vailab
le at
pin (22) of IC1301
(A
V SWITCH)?
Chec
k the circuit
betw
e
en J3401
(front INPUT4) A
V
ter
m
inal and pin
(22) of IC1301.
NO
YES
Is
Y signal input
av
ailab
le at pin (24)
and C signal input at
pin (26) of IC1301
(A
V SWITCH)
respectiv
ely?
Chec
k the circuit
betw
een pins (2)
and (1) and pins
(24) and (26) of
IC1301.
NO
Is MAIN-Y signal output
a
vailab
le at pin (56)
and MAIN-C signal
output at pin (58) of
IC1301 respectiv
ely?
Is SUB-Y signal output
a
vailab
le at pin (44) and
SUB-C signal output at
pin (47) of IC1301
respectiv
ely?
Chec
k IC1301
and per
ipher
al
circuits
.
No e
xter
nal input picture (INPUT4 A
V
)
No e
xter
nal input picture (INPUT4 S-IN)
No picture (5)
NO
Is video signal
output a
v
ailab
le at
pin (41) of IC1301
(A
V SWITCH)?
NO
Is
Y signal output
a
v
ailab
le at pin (39)
and C signal output
at pin (37) of IC1301
(A
V SWITCH)
respectiv
ely?
YES
YES
YES
Chec
k the circuit
betw
een pin (41) and
of IC1401 J1101
(monitor video output
ter
minal).
Chec
k the circuit
betw
een pins (39)
and (37) of IC1301
and pins (3), (4) of
J1102 (monitor S-
OUT ter
minal).
Confir
m
input signal
is S-INPUT
.
No monitor picture (A
V)
No monitor picture (S-OUT)
Chec
k
IC1301 and
per
ipher
al
circuits
.
C
A
B
Chec
k
IC1301 and
per
ipher
al
circuits
.
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