PZ-50MR2E (serv.man9). Trouble shooting table — Sharp TV Service Manual (repair manual)

Model
PZ-50MR2E (serv.man9)
Pages
7
Size
37.49 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Trouble shooting table
File
pz-50mr2e-sm9.pdf
Date

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

43
PZ-43MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE
Æ 
POWER Unit
P
o
wer
-on failure (Fr
ont LED indicator sta
ys off
.)
NO
YES
Is the po
w
er cab
le 
connector proper
ly 
connected with the set?
Reinser
t the po
w
er cab
le 
connector and tur
n on the 
po
w
er again.
NO
YES
Are F701 and F702 intact 
in place?
Replace F701 or F702 and 
tur
n on the po
w
er again.
 If 
the fuse b
lo
w
s out again, 
replace 
V
A701, Q701, Q703 
and IC702 and chec
k the 
perf
or
mance again.
 
NO
YES
Does the BA
CK5V line 
function?
Chec
k the BA
CK5V line
. Is 
there an
y def
ectiv
e par
t or 
shor
t-circuit?
Chec
k the set's wire 
har
nesses
, FFCs and other 
par
ts f
or their connections
.
YES
Repair the def
ectiv
par
t or shor
t-circuit.
 
Chec
k the 
perf
or
mance again.
NO
Chec
k IC702, 
T702, PC703 and 
their per
ipher
al 
circuits
.
P
o
wer s
witc
h on,
 b
ut no po
wer 
(Fr
ont LED indicator does not c
hang
e fr
om red to green,
 b
ut remains in red.)
NO
YES
Are the MDR and D
VI cab
le connectors (white 
and g
ra
y) proper
ly connected with the PDP 
and the set as w
ell?
NO
YES
YES
YES
Is the impedance of the M+10V line 
as specified? (Measure the resistance 
betw
een F1702 and GND
.)
NO
NO
YES
Are there v
oltage 
fluctuations along the O
VP 
line (pin (12) of P1502)?
NO
Chec
k the M+10V line as w
ell 
as its circuit par
ts
.
YES
Are the DC/DC con
v
e
rter output 
lines and MOS-FET (Q1712, 
Q1716, Q1726 and Q1718) as 
specified?
NO
Chekc the D_PO
W and 
B+2.5V_PO
W lines (pins (6) 
and (7) of IC1503).
YES
NO
Chec
k the DC/DC con
v
e
rter output 
lines and replace the MOS-FET 
(Q1712, Q1716, Q1726 and Q1718).
NO
YES
Is the PS_ON ter
minal (pin (1) of CN703) at HI 
(3.5V)?
Chec
k the inter
nal par
ts of the po
w
er 
unit (Q703, Q704, Q708, Q709, D717, 
D710 and D711).
Are the D_PO
W and B+2.5V_PO
settings (pins (30), (32), (33) and (34) 
of IC1701) at HI?
NO
YES
Do the +5V line (pin (10) of P1703), 
+2.5V line (pins (5) and (6) of P1702), 
and +3.3V line (pin (8) of P1702) all 
function?
Chec
k the set's wire har
nesses
FFCs and other par
ts f
or their 
connections
.
Replace IC1701.
Chec
k the PS_ON line
.
Is the M+10V line as specified?
Is the PDP's po
w
er s
witch on?
Reinser
t the connectors
, and tur
n on the 
po
w
er again.
T
u
rn
 on the PDP's po
w
er s
witch.
44
PZ-43MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE
 (Continued)
No sound
 No sound from speak
er
NO
YES
YES
Does output icon denote speak
er when 
oper
ating audio v
olume control?
NO
NO
Does output icon denote lineout when 
oper
ating audio v
o
lume control?
Monitor output in the main men
u is set 
to "V
ar
iab
le".
 Switch it to "Fix
ed".
YES
Is audio output a
v
ailab
le at each related 
pin of IC2501 (MUL
TI SOUND 
PR
OCESSOR) nor
mal?
Pins (36) and (37) of IC2501 (SC1 OUT 
L/R)
YES
Chec
k Q2505 and 2504 (Buff
e
r) and 
its per
ipher
al circuits
YES
Chec
k PC I/F Unit and its per
ipher
al 
circuits
.
No audio output (SCAR
T1)
YES
Is audio output a
v
ailab
le at each 
related pin of IC2501 (MUL
TI SOUND 
PR
OCESSOR) nor
mal?
Pins (27) and (28) of IC2501 
(SC1 OUT L/R)
YES
Chec
k the circuit betw
een pins (27) and 
(28) of IC2501 and pins (3) and (1) of 
SCAR
T1, as w
e
ll as audio m
u
te circuit.
NO
Is tuner audio input a
v
ailab
le at each 
related pin of IC2501
(MUL
TI SOUND PR
OCESSOR) nor
mal ?
Pin (67) of IC2501 (SOUND IF1)
Pin (69) of IC2501 (SOUND IF2)
NO
NO
NO
Is audio output a
v
ailab
le at each related pin of 
IC1301 (A
V SWITCH) nor
mal?
Pins (52) and (54) of IC1301 (L/R OUT1)
Pins (43) and (45) of IC1301 (L/R OUT2)
Pins (38) and (40) of IC1301 (L/R OUT3)
NO
No audio output (SCAR
T2/3)
YES
Is audio output a
v
ailab
le at each 
related pin of IC2501 (MUL
TI SOUND 
PR
OCESSOR) nor
mal?
Pins (27) and (28) of IC2501  
(SC1 OUT L/R)
YES
Chec
k the circuit betw
een pins (27) and 
(28) of IC2501 and pins (3) and (1) of 
SCAR
T2/3, as w
e
ll as audio m
u
te circuit.
No monitor audio output
YES
Is nor
mal audio output a
v
ailab
le at 
each related pin of IC2501 
(MUL
TI SOUND PR
OCESSOR)?
Pins (34) and (33) of IC2501
(SC2 OUT L/R)
YES
Chec
k the circuit betw
een pins (34) and 
(33) of IC2501 and J1101 (monitor audio 
output), as w
ell as audio m
ute circuit.
Chec
k the plasma displa
y section.
On TV 
reception
On e
x
ternal input / PC input
Chec
k IC2501 (MUL
TI SOUND PR
OCESSOR) and its per
ipher
a
l circuits
.
Chec
k B
.P
.F
. of SIF1 and SIF2 respectiv
ely
.
Chec
TU1101 (U/V tuner) and per
ipher
als
.
Is each audio input circuit of IC1301 (A
V SWITCH) 
nor
mal?
Betw
een SCAR
T1 Pins (6), (2) and IC1301 Pins (2), (4)
Betw
een SCAR
T2 Pins (6), (2) and IC1301 Pins (9), (11)
Betw
een SCAR
T3 Pins (6), (2) and IC1301 Pins (16), (18)
Betw
een front input (J3401) and IC1301 Pins (23), (25)
Betw
een PC input (J3403) and IC1301 Pins (29), (31)
Chec
k
 IC1301 (A
V SWITCH) and per
ipher
als
.
45
PZ-43MR2E
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
SWITCH)?
Is there A
V
 signal input 
at pin (10) of IC1301 (A
SWITCH)?
Is there A
V
 signal input 
at pin (3) of IC1301 (A
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
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
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
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
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
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
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
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
selection screen.
Is component signal input 
a
v
ailab
le at pins (15), (17) 
and (19) of IC1401 (A
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
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
input signal 
is S-INPUT
.
No monitor picture (A
V)
No monitor picture (S-OUT)
Chec
IC1301  and 
per
ipher
al 
circuits
.
C
A
B
Chec
IC1301 and 
per
ipher
al 
circuits
.

Download Sharp PZ-50MR2E (serv.man9) Service Manual (Repair Manual)

Here you can view online or download Sharp PZ-50MR2E (serv.man9) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp PZ-50MR2E (serv.man9) LCD. Information contained in Sharp PZ-50MR2E (serv.man9) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).