Sharp PZ-43MR2E (serv.man9) Service Manual ▷ View 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
.
48
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
Sync
hr
onization failure
NO
YES
Is VDM/HDM
output
a
v
ailab
le at pins (28)
and (29) of IC803
(RGB DECODER)?
Chec
k IC803 and
per
ipher
al circuits
.
NO
NO
YES
Is HI/VI input a
v
ailab
le
at pins (66)/(1) and
(65)/(2) of IC803?
Chec
k the circuit
betw
een pins (34)
and (35) of IC1901
and pins (66)/(1) and
(65)/(2) of IC803.
NO
YES
Is PL-HD/VD output
a
vailab
le at pins (34) and
(35) of IC1901 (PLD)?
Chec
k IC1901 and
per
ipher
al circuits
.
YES
MAIN:
Is HD1/VD1 input a
v
ailab
le at pins (44) and (2) of IC1901?
SUB:
Is HD2/VD2 input a
v
ailab
le at pins (19) and (20) of IC1901?
COMPONENT
: Is SP HD/VD input a
v
ailab
le at pins (40) and (5) of IC1901?
NO
Is HD1/VD1 output a
v
ailab
le
at pins (9) and (4) of IC801
(MAIN VIDEO
CHR
OMA)?
Chec
k IC801 and per
ipher
al
circuits
.
YES
NO
Is SP HD/VD output
a
v
ailab
le at pins (16) and
(28) of IC604 (SYNC SEP)?
Chec
k IC604 and per
ipher
al
circuits
.
YES
NO
Is HD2M/VD2 output a
vailab
le
at pins (9) and (4) of IC802
(SUB VIDEO
CHR
OMA)?
YES
Is video signal input
a
v
ailab
le at pin (21) of
IC1601 (TELETEXT CPU)?
Is
TELETEXT compatib
le broadcast receiv
ed (or are signals from other
TELETEXT compatib
le
equipment receiv
ed at video input ter
minal), and is
TELETEXT selected on remote controller?
Chec
k
the circuit betw
een
pin (56) of IC1301 and pin
(21) of IC1601.
NO
YES
Is signal input a
vailab
le at pins
(57), (58) and (59) of IC1601?
Chec
k IC1601 and its
per
ipher
al circuits
.
NO
Is signal input a
v
ailab
le at
pins (57), (53) and (55) of
IC1301 (A
V SWITCH)?
Chec
k
the circuit betw
een
pins (57), (58) and (59) of
IC1601 and pins (57), (53)
and (55) of IC1301.
YES
NO
Select TELETEXT
in
accordance with the
specified procedure
.
Chec
k IC802 and per
ipher
al
circuits
.
No TELETEXT
screen
NO
YES
Is HDS/VDS output
a
v
ailab
le at pins
(21) and (22) of
IC1901 (PLD)?
Chec
k IC1901
and per
ipher
al
circuits
.
NO
MAIN
SUB
Chec
k the
circuit betw
een
pins (9) and (4)
of IC801 and
pins (19) and
(20) of IC1901.
49
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE FOR PC I/F UNIT
No picture
NO
YES
No
TV
, video and component picture
Is input a
v
ailab
le at pins
(124), (133) and (139) of
IC4 nor
mal?
Chec
k CN6 and its
per
ipher
al circuits
.
NO
YES
Are TL207, TL208
and
TL211 nor
mal?
Chec
k CN6 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC4 nor
mal?
Chec
k IC4 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC310 nor
mal?
Chec
k IC310 and its
per
ipher
al circuits
.
NO
YES
Is digital output of IC25
nor
mal?
Chec
k IC25 and its
per
ipher
al circuits
.
No PC picture
YES
Is signal a
v
ailab
le at pins (21), (22), (24), (25), (27), (28), (30)
and (31) of IC413? (The signal is of high frequency (a little
less than 1GHz).
P
a
y due attention to it dur
ing obser
v
ation.)
Monitor prob
lem is lik
ely
.
NO
PC I/F Unit (CPCi-
0056CE) inter
nal prob
lem
is lik
ely
.
No MAIN picture on single screen and dual screen.
No SUB picture on dual screen
NO
YES
Is input a
v
ailab
le at pins
(126), (136) and (141) of
IC4 nor
mal?
Chec
k CN8 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC4 nor
mal?
Chec
k IC4 and its
per
ipher
al circuits
.
NO
YES
Is digital output of IC25
nor
mal?
Chec
k IC25 and its
per
ipher
al circuits
.
49
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE FOR PC I/F UNIT
No picture
NO
YES
No
TV
, video and component picture
Is input a
v
ailab
le at pins
(124), (133) and (139) of
IC4 nor
mal?
Chec
k CN6 and its
per
ipher
al circuits
.
NO
YES
Are TL207, TL208
and
TL211 nor
mal?
Chec
k CN6 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC4 nor
mal?
Chec
k IC4 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC310 nor
mal?
Chec
k IC310 and its
per
ipher
al circuits
.
NO
YES
Is digital output of IC25
nor
mal?
Chec
k IC25 and its
per
ipher
al circuits
.
No PC picture
YES
Is signal a
v
ailab
le at pins (21), (22), (24), (25), (27), (28), (30)
and (31) of IC413? (The signal is of high frequency (a little
less than 1GHz).
P
a
y due attention to it dur
ing obser
v
ation.)
Monitor prob
lem is lik
ely
.
NO
PC I/F Unit (CPCi-
0056CE) inter
nal prob
lem
is lik
ely
.
No MAIN picture on single screen and dual screen.
No SUB picture on dual screen
NO
YES
Is input a
v
ailab
le at pins
(126), (136) and (141) of
IC4 nor
mal?
Chec
k CN8 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC4 nor
mal?
Chec
k IC4 and its
per
ipher
al circuits
.
NO
YES
Is digital output of IC25
nor
mal?
Chec
k IC25 and its
per
ipher
al circuits
.
Display
