Pioneer PDP-R03U, Service Manual

Page: 110 / 142

PDP-R03U
110
1 2 3 4
1 2 3 4
C
D
F
A
B
E
No picture (4)
NO
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) of
IC1301 and pin (20) of J1104.
Chec
k the circuit
betw
een pins
(39)/(37) of IC1301 and pins (3)/(4) of SC1102.
Confir
m
input signal is S-INPUT
.
No monitor picture (A
V
-OUT)
No monitor picture (S-OUT)
Chec
k
IC1301 and its per
ipher
al
circuits
.
Chec
k
IC1301 and its per
ipher
al
circuits
.
Is video signal output a
v
ailab
le at
pin (41) of IC1301 (A
V SWITCH)?
YES YES YES
No picture (5)
NO
No TV
picture
Is video output a
v
ailab
le at pin
(19) of
TU1101 and
TU1102
(U/V tuner)?
Chec
k U/V tuner and
its per
ipher
al circuits
.
NO
Is video input signal a
v
ailab
le
at pins (63) and (60) of IC1301?
Chec
k the circuit betw
een pin
(19) of
TUNER and pins
(63)/(60) of IC1301.
C
Sync
hr
onization failure
NO
YES
Is
VDM/HDM output a
vailab
le
at pins (28) and (29) of IC803 (RGB DECODER)?
Chec
k IC803 and its
per
ipher
al circuits
.
NO
YES
Is HI/VI IN input a
v
ailab
le at
pins (66) and (65) of IC803?
Chec
k the circuit
betw
een pins (35)/(34)
of IC1901 and pins (66)/(65) of IC803.
NO
YES
Is PL-HD/VD output a
v
ailab
le at pins (34) and
(35) of IC1901 (PLD)?
Chec
k IC1901 and its
per
ipher
al circuits
.
NO
YES
Is HDS/VDS output a
v
ailab
le at pins (21) and
(22) on IC1901 (PLD)?
Chec
k IC1901 and its
per
ipher
al circuits
.
NO
YES
Is HD1/VD1 input a
v
ailab
le
at pins (44) and (2) of IC1901?
Chec
k the circuit
betw
een pins (4)/(9) of
IC801 and pins (2)/(44) of IC1901.
NO
YES
Is
VD2/HD2 input a
v
ailab
le
at pins (20) and (19) of IC1901?
Chec
k the circuit
betw
een pins (4)/(9) of
IC802 and pins (20)/(19) of IC1901.
NO
YES
Is SP-VD/HD input a
v
ailab
le
at pins (5) and (40) of IC1901?
Chec
k the circuit
betw
een pins (28)/(16)
of IC604 and pins (5)/(40) of IC1901.
NO
Chec
k IC801 and its
per
ipher
al circuits
.
NO
Is HD2/VDM2 output a
vailab
le
at pins (9) and (4) of IC802 (SUB VIDEO
CHR
OMA)?
Chec
k IC802 and its
per
ipher
al circuits
.
NO
Is SP-HD/VD output a
v
ailab
le at pins (16) and
(28) of IC604 (SYNC SEP)?
Chec
k IC604 and its
per
ipher
al circuits
.
MAIN
SUB
HDTV
Is HD1/VD1 output a
v
ailab
le
at pins (9) and (4) of IC801 (MAIN VIDEO
CHR
OMA)?