TU-32GD1E (serv.man8). Trouble shooting table — Sharp TV Service Manual (repair manual)

Model
TU-32GD1E (serv.man8)
Pages
19
Size
249.36 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Trouble shooting table
File
tu-32gd1e-sm8.pdf
Date

View Sharp TU-32GD1E (serv.man8) Service Manual online

33
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
No power supply (Front LED is not ON)
Is power cable properly connected to the main unit?
Is F701 normal?
Is F702 normal?
Reconnect the wire harness, FFC, etc. in the set, and repeat 
the check.
Connect the power cable properly, and turn on the power.
Replace F701, and turn on the power.  If the fuse is still 
blown, replace VZ701, D701, Q705 and Q706, and repeat 
Replace F702, and turn on the power.  If the fuse is still 
blown, replace D701 and IC701, and repeat the check.
Remove the faulty part or short-circuit, and repeat the check.
Check IC902 and its peripheral 
NO
NO
NO
Is there any faulty part or short-circuit in BU+5V line?
NO
NO
YES
YES
Is BU+5V line (PI/CN901) normal?
YES
YES
YES
No power-up (Front LED does not change from red to green)
Are MDR (gray) and DVI (white) connectors of the system 
cable properly connected to the monitor and the AVC center?
Reconnect properly and turn on the power.
NO
Is the power switch of the monitor ON?
Set the power switch to ON, and turn on the power.
YES
NO
Is specified voltage available at S-Vcc+15V (pins (11) and 
(12) of PA/P1752), UR+10V (pin (5) of PA/P1752) and 
BS+10V (pins (7) and (8) of DP/P1781)?
Is specified voltage available at D+1.8VCV (pins (3) and (4) 
of PB/P1703), D+3.3V (pins (9) and (12) of PF/P1701), D+5V 
(pin (1) of DP/P1703) and UR+6V (pin (7) of PF/P1701)?
Reconnect the wire harness, FFC, 
etc. in the set, and repeat the check.
Are PS_ON (pin (6) of PF/P1701) and EU_D_POWER (pin 
(2) of PG/P1702) at "HI" (3V or higher)?
Are MOS-FET (Q1701, Q1702, Q1703, Q1704 and Q1705) 
and IC952 normal?
Does OVP line pin (2) of PF/P1701 
voltage fluctuate immediately after 
the power is supplied?
Is specified impedance available in S-Vcc+15V, UR+10V and 
BS+10V lines?  (Measure the resistance between each +B 
line and GND.)
Check PS_ON or EU_D_POWER 
Check the circuits in the faulty line.
Check D_POW line (pin (8) of 
PF/P1701).
Is D_POW line normal?  Are the pins 
(45),(46), (47) and (48) of IC1701 at 
"HI", and the pin (5) of IC952 at 
"LOW"?
Replace faulty FET or IC.
YES
NO
NO
NO
YES
YES
YES
YES
NO
Replace IC1701.
YES
YES
NO
NO
NO
34
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
No audio output (1)   (Output from external terminals)
No Head phone sound output.
Are output from Pins (26)(27) of IC2514 
(CODEC) and Pins (1)(7) of "HP-R/L-
IN"~IC2502 (HP_AMP) and the Q2501 
(HP_MUTE) circuit normal?
Check the Headphone terminal (J2402) and 
peripheral circuits.
No audio output from External Speakers.
In the 
AUDIO-IF PWB : Is RELA
Y
 R
Y6000 
normally operated?
In the 
AUDIO-IF PWB : Is the "H" signal 
coming to "SP-SW" of Pin (1) of SF-
Connector?
In the 
A
V
 PWB : Is the "H" signal output to 
Pin (6) of IC3808?
In the 
A
V
 PWB : Confirm IC3808 SDA3-
LINE and peripheral circuits.
Is "Selecting speakers" in the MENU-Set 
up set to "SPEAKER-B"?
If not, set the "SPEAKER-B".
No audio output from Optical-Audio-OUT
 
(IC1
109).
YES
YES
YES
YES
YES
YES
NO
NO
NO
YES
YES
Check the "HP-PLUG" signal Line.
Check Pin (4) of Headphone (J2402) thru 
Pin (1
1) of IC2509.
Replace IC1
109 or check peripheral circuits.
Check the SPDIF signal from Pin (40) of 
MA-Connector (P3802) and Pin (15) of B/B-
Connector (P8903).
Replace IC8903 or check peripheral circuits.
Replace IC8601 or check peripheral circuits.
Replace IC2507 (OPT
-SW) or check 
peripheral circuits.
NO
NO
NO
NO
NO
Is output from Optical-Fiber 
T
ransmitter 
(IC1
109) normal?
Is input into Pin (12) of IC2507 (OPT
-SW) 
normal?
In the DVB-T
 PWB : Is output from Pin (2) of 
IC8903 (INV) coming?
Is output from Pin (AC16) of IC8601 
(Processor) normal?
Is output from Pin (8) of IC2507 (OPT
-SW) 
normal?
35
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
No audio output (2)    (On the reception of TV broadcasting)
No monitor audio output.
1)
 Is
 a 
He
adp
h
on
e
 c
onn
ec
te
d
?
  
···D
isc
onn
ec
t it.
2)
 I
n t
he
 ME
N
U-O
ption
, i
s
 "A
udio 
O
ut
se
t to 
"F
ixe
d
"?
  
···Se
t it 
"F
ixe
d
".
3)
 I
n t
he
 ME
N
U-O
ption
, i
s
 "Ce
ntr
e
 Ch
ann
el
 input
se
t to 
"o
ff"?
  
···Se
t it 
"o
ff
".
4)
 I
n t
he
 ME
N
U-Se
t up
, i
s
 "Selec
tin
g
 S
p
e
a
ke
rs"
 se
t to 
"SPEAKER-A"?
  ···Se
t it 
"SPEAKER-A"
.
YES
NO
NO
NO
NO
YES
YES
YES
NO
In t
he
 AUDIO-IF
 P
WB
 :
 Is
 t
he
 AUDIO
 
s
ig
na
c
omin
g
 to 
RE
L
A
Y
 R
Y6000
 and 
R
Y600
1?
In t
he
 AUDIO-IF
 P
WB
 :
 Is
 t
he
 AUDIO
 
s
ig
na
l input to 
SC-C
onn
ec
tor 
(P
600
3)?
Is
 t
he
 AUDIO
 s
ig
na
l input to t
he
 1
 b
it
-
AMP
 U
N
IT
?
Is
 t
he
 AUDIO
 s
ig
na
l output to 
P
in
s
 
(2
7
)(
2
8
) o
IC2
5
14?
C
on
firm 
IC2
5
14
 (
CODEC),
 IC2
5
0
1
 (
MSP)
 
and p
e
rip
he
ra
c
ir
c
uit
s
.
Is
 t
he
 AUDIO
 s
ig
na
l output to 
DISP
L
A
Y
-
OU
T
PU
T
3
 (
SC
600
1)?
Is
 t
he
 c
onn
ec
tion o
S
y
s
te
c
a
b
le
 (
b
la
ck)
 
norma
l?
(M
onitor 
S
id
e)
M
onitor 
S
id
e
 :
 Is
 t
he
 AUDIO
 s
ig
na
l input 
to 
AUDIO-C
onn
ec
tor 
(J
22
0
1)
 and 
SO-
C
onn
ec
tor 
(P22
0
1)?
M
onitor 
S
id
e
 :
 Is
 t
he
 c
onn
ec
tion o
SO-
C
onn
ec
tor 
(P22
0
1)
 and 
SP-
te
rmina
(P2
0
3)
 in t
he
 SP-U
N
IT
 norma
l?
A
re
 t
he
 c
onn
ec
tion in t
he
 SP-KUMI
 and 
the
 S
p
e
a
ke
r norma
l?
36
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
No audio output (2)    (On the reception of TV broadcasting)
1) Is a Headphone connected?  
···Disconnect it.
2) In the MENU-Option, is "Audio Out" set to "Fixed"?  
···Set it "Fixed".
3) In the MENU-Option, is "Centre Channel input" set to "of
f"?  
···Set it "of
f".
4) In the MENU-Set up, is "Selecting Speakers" set to "SPEAKER-A"?  
···Set it "SPEAKER-A".
Is the SIF audio signal input to Pins 
(67
)(69
of IC2
50
(MSP)?
No audio output on the reception of 
UHF
/V
HF
.
Is the SIF signal output fro
m
 Pin 
(7
) of 
T
UNER 
(T
U1
1
0
1)?
Check the 
T
UNER 
(T
U1
1
0
1) and its 
peripheral circuits.
Check the signal 
L
INE of Pins 
(33)
(34) of 
IC2
50
1 thru Pins 
(32)
(33) of IC2
5
14 and 
peripheral circuits.
YES
YES
NO
NO
Check IC2
5
14 and peripheral circuits.
Confir
m
 the connection of 1 
b
it-AMP
 and 
replace it.
Check that SP-S
W
 and 1
8
-RE
L
A
Y
 signals 
are co
m
ing to Pins 
(1)
(2) of SF connector
.
YES
YES
YES
YES
Is the audio signal of Pins 
(33)
(34) of IC2
50
(MSP) thru Pins 
(32)
(33) of IC2
5
14 
(CODEC) nor
m
al?
Is each audio output fro
m
 Pins 
(2
7
)(
2
8
) of 
IC2
5
14 nor
m
al?
Is audio output of Pins 
(2
7
)(
2
8
) of IC2
5
14 
thru 1 
b
it-AMP
 input 
(SA
/CNA1
0
1) nor
m
al?
Is output fro
m
 1 
b
it-AMP
 (
SC
/CNA1
0
2) 
nor
m
al?
Is rela
y
 s
w
itching of the connector of 
AUDIO-
I/
F P
W
B
 (
SC
/P
600
3) thru R
Y
600
(Speaker 
ON
/OFF s
w
itching) and R
Y
6000
 (
Speaker 
A
/B
 s
w
itching) nor
m
al?
Check DISP
L
A
Y
-OU
T
PU
T
(SC
600
1) and 
S
Y
S
T
EM-CA
B
L
(B
L
ACK).
NO
YES
YES
NO
NO
NO
NO
No audio output on the reception of D
T
V
.
Is the MAIN-
L
/R signal of Pins 
(5
2)
(5
4) of 
IC3
8
0
1 thru Pins 
(56
)(57
) of IC2
50
1 co
m
ing 
nor
m
all
y
?
Is the D
T
V
-L
/R signal co
m
ing to Pins 
(59
)(6
1) of IC3
8
0
(A
V
-S
W
) nor
m
all
y
?
D
V
B
-T
-UNI
T
 :
 Is the 
L
/R audio signal output 
fro
m
 Pins 
(2
7
)(
2
9
) of P
8
90
3?
Check and replace peripheral circuits of 
IC3
8
0
(A
V
-S
W
).
Confir
m
 the connection of Pins 
(2
7
) thru 
(2
9
of MA-connector 
(P3
8
0
2) and 
B
/B
 (
P
8
90
3).
Check IC
8
90
4 and peripheral circuits.
Check IC
8
905
 and peripheral circuits.
YES
YES
YES
YES
NO
NO
NO
NO
NO
Is the 
L
/R audio signal output to Pins 
(9
1)
(95
) of IC
8
905
?
Is the digital signal input to Pins 
(1
5
-1
7
)(
1
9
of IC
8
905
?
Check IC
88
0
1-
88
0
2, IC
88
0
4-
88
05
 and 
peripheral circuits.
heck the connection of SA
 connector and to 
b
it-AMP
.
37
TU-32GD1E
TU-37GD1E
TROUBLE SHOOTING TABLE
 (Continued)
No audio output (3)   (On the reception of 
TV br
oadcasting,
 audio fr
om the SCAR
T terminal to the e
xternal de
vice)
No audio output (4)   (A
udio fr
om e
xternal input terminals)
YES
NO
NO
YES
YES
No audio output from INPUT1 
T
e
rminal.
No audio output from INPUT2 and 
INPUT3 T
e
rminals
.
YES
Is output from Pins (27)(28) of 
IC2501 (MSP) nor
mal?
Confir
m Pins (23)(27) of SC1102 
thr
u Pins (16)(18) of IC3801.
Confir
m Pins (5)(7) of J2404 thr
Pins (23)(25) of IC3801.
Is the A
UDIO input signal to Pins 
(56)(57) of IC2501 (MSP) nor
mal?
Chec
k output of Pins (33)(34) of 
IC2501 (MSP) and per
ipher
al 
circuits
.
Confir
m Pins (2)(6) of SC1102 
thr
u Pins (9)(11) of IC3801.
Confir
m Pins (2)(6) of SC1101 
thr
u Pins (2)(4) of IC3801.
Chec
k the D
VI-L/R signal betw
een 
INPUT5-D
V1-A
UDIO-T
er
minal 
(J1900) and AD-Connector
.
YES
Chec
k the signal of Pins (27)(28) 
of IC2501 thr
u Pins (1)(3) of 
SCAR
T2 (SC1102) and Pins 
(22)(24) of SCAR
T3 (SC1102).
Q1105, Q1106, Q1110, Q1111
Chec
k Q1104, Q1107, Q1109 and 
Q1112 of the A
udio-Mute circuit 
and S-MUTE-LINE.
YES
Is output from Pins (24)(25) of 
IC2501 (MSP) nor
mal?
YES
Chec
k the signal of Pins (24)(25) 
of IC2501 thr
u Pins (1)(3) of 
SCAR
T1 (SC1101).
Chec
k Q1101 and Q1102 of the 
A
udio-Mute circuit and S-MUTE-
LINE.
No audio signals input from 
INPUT1 thr
u INPUT4 
T
e
rminals
.
YES
Is the signal input from each 
ter
minal to IC3801 (A
V
-SW) 
nor
mal?
<INPUT1>
Is the input signal (SL1/SR1) to 
Pins (2)(4) of IC3801 (A
V
-SW) 
nor
mal?
<INPUT2>
Is the input signal (SL2/SR2) to 
Pins (9)(11) of IC3801 (A
V
-SW) 
nor
mal?
<INPUT3>
Is the input signal (SL3/SR3) to 
Pins (16)(18) of IC3801 (A
V
-SW) 
nor
mal?
YES
<INPUT4>
Is the input signal (V4L/V4R) to 
Pins (23)(25) of IC3801 (A
V
-SW) 
nor
mal?
NO
Is the A
UDIO output signal (MAIN-
L/R) from Pins (52)(54) of IC3801 
(A
V
-SW) nor
mal?
Replace IC3801 (A
V
-SW) and 
chec
k per
ipher
al circuits
.
Replace IC3801 (A
V
-SW) and 
chec
k per
ipher
al circuits
.
No audio signals input from the 
INPUT5 D
VI-A
UDIO 
T
e
rminal.
YES
<INPUT5>
Is the input signal (PC-L/R) to Pins 
(29)(31) of IC3801 nor
mal?
NO
Is the A
UDIO output signal (MAIN-
L/R) from Pins (52)(54) of IC3801 
(A
V
-SW) nor
mal?

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Here you can view online or download Sharp TU-32GD1E (serv.man8) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp TU-32GD1E (serv.man8) LCD. Information contained in Sharp TU-32GD1E (serv.man8) service manual (repair manual) typically includes:

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  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).