Read Sharp PZ-50MR2E (serv.man9) Service Manual online
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.
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