Sharp PZ-43MR2E (serv.man9) Service Manual ▷ View online
45
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE
(Continued)
No Picture (1)
YES
NO
YES
No e
xter
nal input <SCAR
T1 A
V
>
Chec
k the line betw
een
pin (20) of SCAR
T1 and
pin (3) of IC1301.
YES
YES
No e
xter
nal input <SCAR
T2 A
V
>
Chec
k the line betw
een
pin (20) of SCAR
T2 and
pin (10) of IC1301.
YES
NO
YES
No e
xter
nal input <SCAR
T3 A
V
>
NO
Chec
k IC1301 and its
per
ipher
al circuits
.
Is there A
V
signal input
at pin (17) of IC1301 (A
V
SWITCH)?
Is there A
V
signal input
at pin (10) of IC1301 (A
V
SWITCH)?
Is there A
V
signal input
at pin (3) of IC1301 (A
V
SWITCH)?
YES
Are there MAIN-R/G/B signal inputs at pins (5), (7)
and (9) of IC811 (30MHz L.P
.F
.), respectiv
ely?
YES
NO
Chec
k IC811 and
its per
ipher
al
circuits
.
YES
YES
YES
NO
Chec
k IC810 and
its per
ipher
al
circuits
.
Are there SUB-R/G/B signal outputs
at pins (13), (11) and (10) of IC810,
respectiv
ely? (in STD mode)
Are there SUB-R/G/B signal outputs
at pins (13), (11) and (10) of IC811,
respectiv
ely? (in HDTV mode)
Chec
k the line betw
een
pin (20) of SCAR
T3 and
pin (17) of IC1301.
YES
NO
Chec
k the line betw
een
IC405 and IC801.
YES
Are there MAIN-Y signal inputs at pins (1) and (44) of IC801
(MAIN
VIDEO CHR
OMA) as w
ell as MAIN-C signal inputs at pins
(43) and (48)(composite signal at pin (1) in SECAM system)?
NO
Chec
k the line betw
een
IC402 and IC802.
Are there SUB-Y signal input at pin (44) of IC802 (SUB
VIDEO CHR
OMA) (at pin (1) in NTSC system) as w
ell as
SUB-C signal input at pin (43) (at pin (48) in NTSC system)?
YES
NO
Chec
k IC801 and its
per
ipher
al circuits
.
YES
Are there MAIN-Y/Cb/Cr signal outputs at pins (21),
(22) and (23) of IC801, respectiv
ely?
NO
Chec
k IC802 and its
per
ipher
al circuits
.
Are there SUB-Y/Cb/Cr signal outputs at pins (21),
(22) and (23) of IC802, respectiv
ely?
YES
NO
Chec
k the line betw
een
IC801 and IC803.
YES
Are there MAIN-Y/Cb/Cr signal inputs at pins (69), (68)
and (67) of IC803 (RGB DECODER), respectiv
ely?
NO
Chec
k the line betw
een
IC802 and IC804.
Are there
SUB-Y/Cb/Cr
signal inputs at pins (5), (9)
and (7) of IC804 (6.7MHz L.P
.F
.), respectiv
ely?
YES
NO
Chec
k IC803 and its
per
ipher
al circuits
.
YES
YES
Are there MAIN-R/G/B signal outputs at pins (35),
(37) and (39) of IC803, respectiv
ely?
NO
Chec
k IC804 and its
per
ipher
al circuits
.
Are there SUB-R/G/B signal outputs at pins (13),
(11) and (10) of IC804, respectiv
ely?
NO
NO
NO
Select INPUT1 A
V
on
the men
u screen.
Select INPUT2 A
V
on
the men
u screen.
NO
Is INPUT3 A
V
selected
on the Input Select
men
u screen?
Is INPUT2 A
V
selected
on the Input Select
men
u screen?
Is INPUT1 A
V
selected
on the Input Select
men
u
screen?
Select INPUT3 A
V
on
the men
u screen.
Are there MAIN and SUB video signal outputs at pins (56) and (44) of IC1301, respectiv
ely?
YES
NO
Chec
k
the lines betw
e
en
IC1301, IC405 and
IC402.
Are there video signal inputs at pins (1) and (2) of IC405 (MAIN COMB FIL
TER) and IC402 (SUB COMB FIL
TER)?
Chec
k the PC I/F unit.
<MAIN system>
<SUB system>
<HDTV mode>
<STD mode>
Are there MAIN-R/G/B signal inputs at pins (5), (7)
and (9) of IC810 (6.7MHz L.P
.F
.), respectiv
ely?
C
A
D
F
B
E
46
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE
(Continued)
No picture (2)
NO
YES
NO
YES
No e
xter
nal input picture (SCAR
T2
Y/C)
Is INPUT2
Y/C selected on
Input Select men
u screen?
Select INPUT2
Y/C on
men
u selection screen.
Is
Y signal input a
vailab
le at
pin (10) and C signal input
at pin (12) of IC1301 (A
V
SWITCH) respectiv
ely?
Chec
k the circuit betw
een
pins (20) and (25) of
SCAR
T2 and pins (10) and
(12) of IC1301.
Chec
k the circuit betw
een
pins (20) and (15) of
SCAR
T3 and pins (17) and
(19) of IC1301.
Chec
k
the circuit
betw
een pin (23) of
TUNER and pin (63) of
IC1301.
NO
YES
NO
YES
NO
No e
xter
nal input picture (SCAR
T3
Y/C)
Is INPUT3
Y/C selected on
Input Select men
u screen?
Select INPUT3
Y/C on
men
u selection screen.
Is
Y signal input a
vailab
le at
Pin (17) and C signal input
at pin (19) of IC1301 (A
V
SWITCH), respectiv
ely?
Chec
k IC1301 and
per
ipher
al circuits
.
NO
YES
NO
YES
No TV
picture
Is video output a
vailab
le at pin
(23) of
TU1101 (U/V tuner)?
Chec
k
TUNER and its
per
ipher
a
l circuit.
Is video input signal
a
v
ailab
le at pin (63) of
IC1301 (A
V SWITCH)?
No picture (3)
NO
YES
NO
YES
No e
x
ter
nal input picture (SCAR
T1 RGB)
Is INPUT1 RGB selected
on Input Select men
u
screen?
Select INPUT1 RGB on
men
u selection screen.
Is RGB signal input
a
v
ailab
le at pins (59),
(61) and (63) of IC1401
(A
V SWITCH)?
Chec
k the circuit
betw
een pins (15), (11)
and (7) SCAR
T and pins
(59), (61) and (63).
NO
YES
NO
YES
No e
xter
nal input picture (SCAR
T3 RGB)
Is INPUT3 RGB selected
on Input Select men
u
screen?
Select INPUT3 RGB on
men
u selection screen.
Is RGB signal input
a
v
ailab
le at pins (5), (7)
and (9) of IC1401 (A
V
SWITCH)?
Chec
k the circuit betw
een
pins (15), (11) and (7) of
SCAR
T3 and pins (5), (7)
and (9) of IC1401.
NO
YES
NO
YES
No component picture
Is INPUT3 COMPONENT
selected on Input Select
men
u screen?
Select INPUT3
COMPONENT on men
u
selection screen.
Is component signal input
a
v
ailab
le at pins (15), (17)
and (19) of IC1401 (A
V
SWITCH)?
Chec
k the circuit betw
een
J1101 (component signal
input ter
m
inal) and
IC1401 pins (15), (17)
and (19) of IC1401.
NO
YES
Is RGB signal output
a
v
ailab
le at pins (50), (48)
and (46) of IC1401?
Chec
k IC1401 and
per
ipher
al circuits
.
NO
YES
Is RGB signal output
a
v
ailab
le at pins (50), (48)
and (46) of IC1401?
Chec
k IC1401 and
per
ipher
al circuits
.
NO
YES
YES
YES
YES
Is component signal output
a
v
ailab
le at pins (38), (36)
and (34) of IC1401?
Chec
k
IC1401 and
per
ipher
a
l circuits
.
NO
Is RGB signal input a
vailab
le
at pins (27), (26) and (25) of
IC801 (MAIN
VIDEO
CHR
OMA) respectiv
ely?
Chec
k the circuit betw
een
pins (5), (48) and (46) of
IC1401 and pins (27),
(26) and (25) of IC1801.
NO
Is RGB signal input a
vailab
le
at Pins (27), (26) and (25) of
IC802 (SUB
VIDEO
CHR
OMA) respectiv
ely?
Chec
k the circuit betw
een
pins (50), (48) and (46) of
IC1401 andpins (27), (26)
and (25) of IC802.
NO
Is component signal input
a
v
ailab
le at pins (3), (4)
and (5) of IC803 (RGB
DECODER) respectiv
ely?
Chec
k the circuit betw
e
en
pins (38), (36) and (34) of
IC1401and pins (3), (4)
and (5) of IC803.
C
A
B
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?
DE
F
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.
Display
