Sharp TU-GAT User manual

TU-GAT
SERVICE MANUAL
MODEL
LCD COLOURTELEVISION
(AVC System)
In the interests of user-safety (Required by safety regulations in some countries) the set should be re-
stored to its original condition and only parts identical to those specified should be used.
CONTENTS
Page
»LIST OF CHANGED PARTS ..........................................................................................................................2
»IMPORTANT SERVICE SAFETY PRECAUTION.......................................................................................3
»SPECIFICATIONS ......................................................................................................................................5
»PARTS LIST................................................................................................................................................6
»PACKING OF THE SET ............................................................................................................................10
SHARP CORPORATION
S25E8TU-GAT//
TU-GAT
OUTLINE
This model is based on the TU-GA1U-S and is changed some parts. This Service Manual covers the
modifications alone. For the other points, refer to the TU-GA1U-S Service Manual.

2
TU-GAT
LIST OF CHANGED PARTS
TU-GA1U-S → TU-GAT
Ref.No. Description TU-GA1U-S TU-GAT Note
PWB ASSEMBLIES
AV SUB Unit DUNTKC259FE05 
TMDS TX Unit DUNTKC261FE05 
PC CARD Unit DUNTKC266FE02 
DVI Unit DUNTKC267FE15 
CPU Unit DUNTKC427FE12 
FRONT Unit DUNTKC483DE02 
AUDIO-I/F Unit DUNTKC484DE02 
MAIN Unit DUNTKC619FE05 
AV Unit DUNTKC663FE01 
POWER Unit RDENCA064WJN1 
DC/DC CONVERTER Unit RDENCA074WJN1 
1BIT AMP. Unit B2SX4102BT 
CABINET AND MECHANICAL PARTS
Please refer to a Parts list. (Some Parts Changed)
PACKING PARTS AND ACCESSORIES
Please refer to a Parts list. (Some Parts Changed)

3
TU-GAT
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SAFETY NOTICE
Many electrical and mechanical parts in LCD color
television have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by " å"
and shaded areas in the Replacement Parts List and
Schematic Diagrams.
For continued protection, replacement parts must be
identical to those used in the original circuit.
The use of a substitute replacement parts which do not
have the same safety characteristics as the factory
recommended replacement parts shown in this service
manual, may create shock, fire or other hazards.
CAUTION: FOR CONTINUED
PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
F701 (2A, 250V), F702 (1A, 250V)
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
BEFORE RETURNINGTHE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
»Plug the AC cord directly into a 110 volt AC outlet.
»Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series
with all exposed metal cabinet parts and a known
earth ground, such as electrical conduit or electrical
ground connected to an earth ground.
»Use an AC voltmeter having with 5000 ohm per volt,
or higher, sensitivity or measure the AC voltage drop
across the resistor.
»Connect the resistor connection to all exposed metal
parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
escutcheon, etc.) and measure the AC voltage drop
across the resistor.
All checks must be repeated with the AC cord plug
connection reversed. (If necessary, a nonpolarized
adaptor plug must be used only for the purpose of
completing these checks.)
Any reading of 0.75 Vrms (this corresponds to 0.5
mA rms AC.) or more is excessive and indicates a
potential shock hazard which must be corrected
before returning the monitor to the owner.
IMPORTANT SERVICE SAFETY PRECAUTION
ËService work should be performed only by qualified service technicians who are thor-
oughly familiar with all safety checks and the servicing guidelines which follow:
DVM
AC SCALE
1.5k ohm
10W
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND
0.15 µF
TEST PROBE
A V

4
TU-GAT
Precautions for using lead-free solder
1 Employing lead-free solder
"PWBs" of this model employs lead-free solder.The LF symbol indicates lead-free solder, and is attached on the
PWBs and service manuals.The alphabetical character following LF shows the type of lead-free solder.
Example:
2 Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit,
contact our service station or service branch in your area.
3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering
condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded.Make sure to turn on
and off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder.Clean the bit after
every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Part No, ★Description Code
ZHNDAi123250E J φ0.3mm 250g(1roll) BL
ZHNDAi126500E J φ0.6mm 500g(1roll) BK
ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM
LFa

5
TU-GAT
SPECIFICATIONS
Item TU-GAT (AVC System)
Terminals AVin, COMPONENT in
INPUT 2 AVin, COMPONENT in
INPUT 4 HDMI in
ANTENNA
75 ΩUnbalance, F Type for VHF/UHF/CATV in m 2, out m 1
INPUT 3 S-VIDEO in,AVin
OSD language English/French/Spanish
Power Requirement AC 110 V, 50/60 Hz
48W (0.4W Standby with AC 110 V)
Weight 14.8 lbs./6.7 kg (w/o stand), 15.2 lbs./6.9 kg (with stand)
Accessories Remote control unit ( × 1), System cable ( × 1), AC cord ( × 1),
"AAA" size battery ( × 2), AVC system stand unit ( × 1), RF cable ( × 1)
Rear INPUT 1
Front
Monitor Out S-VIDEO out,AVout
Headphones
Ø3.5mm jack
CENTER
CHANNEL
INPUT RCA pin
4Ω10W (L/R)SPEAKER-B
INPUT 5 Audio in, DVI-I in
Power Consumption
Specifications are subject to change without prior notice.

Ref. No. Part No. ★Description Code Ref. No. Part No. ★Description Code
6
TU-GAT
PRINTED WIRING BOARD ASSEMBLIES
(NOT REPLACEMENT ITEM)
DUNTKC259FE05 – AV SUB Unit —
DUNTKC261FE05 – TMDS TX Unit —
DUNTKC266FE02 J PC CARD Unit BZ
DUNTKC267FE15 – DVI Unit —
DUNTKC427FE12 – CPU Unit —
DUNTKC483DE02 – FRONT Unit —
DUNTKC484DE02 – AUDIO-I/F Unit —
DUNTKC619FE05 J MAIN Unit CR
DUNTKC663FE01 – AV Unit —
RDENCA064WJN1 – POWER Unit —
RDENCA074WJN1 – DC/DC CONVERTER Unit —
B2SX4102BT J 1BIT AMP. Unit BL
PARTS LIST
PARTS REPLACEMENT
Replacement parts which have these special safety characteristics
identified in this manual;electrical components having such features
are identified by åand shaded areas in the Replacement Parts Lists
and Schematic Diagrams.The use of a substitute replacement part
which dose no have the same safety characteristic as the factory
recommended replacement parts shown in this service manual may
create shock, fire or other hazards.
"HOWTO ORDER REPLACEMENT PARTS"
To have your order filled promptly and correctly, please furnish the
following informations.
1. MODEL NUMBER 2. REF.NO.
3. PART NO. 4. DESCRIPTION
★ MARK: SPARE PARTS-DELIVERY SECTION
Ref. No. Part No. ★Description Code

Ref. No. Part No. ★Description Code Ref. No. Part No. ★Description Code
7
TU-GAT
1 CANGTA128WJ03 J Rear Panel Ass’y AT
1-1 Not Available – Rear Panel —
1-2 HiNDPB283WJSA J Indication Label AN
1-3 QEARZA020WJFW J Earth Spring, x2 AC
2 CCABAA469WJ02 J Chassis Frame Ass’y BB
2-1 Not Available – Chassis Frame —
2-2 LHLDW1121GEZZ J Wire Holder, x2 AB
2-3 LHLDWA023WJKZ J Wire Holder, x1 AC
2-4 LHLDWA032WJZZ J Wire Holder, x1 AD
2-5 QEARZA031WJFW J Earth Spring, x1 AF
2-6 XJPSN30P08XS0 J Screw, x2 AA
3 CCABBA334WJ17 J Bottom Cabinet Ass’y AY
3-1 Not Available – Bottom Cabinet —
3-2 GLEGGA034WJZZ J Rubber Leg, x4 AD
3-3 TLABMB494WJZZ J Model Label AE
4 CCABBA407WJ07 J Top Cabinet Ass’y AX
4-1
Not Available – Top Cabinet —
4-2 TCAUHA071WJZZ J Caution Label AE
5 CHLDZA240WJ01 J Fan Holder Ass’y AH
5-1 Not Available – Fan Holder —
5-2 PSPAGA133WJZZ J Spacer, x4 AB
6 CHLDZA306WJ01 J Fan Holder Ass’y AH
6-1 Not Available – Fan Holder —
PSPAGA133WJZZ J Spacer, x4 AB
7 CPNLCA122WJ06 J Front Panel Ass’y BF
7-1 Not Available – Front Panel —
7-2 GCOVAA638WJSB J B-CAS Card Cover AK
7-3 GDORFA091WJSA J Door AY
7-4 HDECQA333WJSA J LED Decoration Cover AF
7-5 HiNDPA758WJSB J PC CARD Indication Label AE
7-6 HiNDPA832WJSA J Terminal Indication Label AF
7-7 JBTN-A252WJKB J Power Button AH
7-8 LANGTA121WJFW J Hinge Angle, x2 AC
7-9 LHLDZ3057GEZZ J Magnet Catch, x2 AE
7-10 LHLDZA323WJSA J Hinge Fixed Holder, x3 AL
7-11 MHNG-1072CEZZ J Hinge, x3 AH
7-12 PSPAGA191WJZZ J Spacer, x2 AB
7-13 PSPAZ0457CESA J Spacer, x1 AA
7-15 XEBSN30P08000 J Screw, x6 AA
8 CSLDMA325WJ01 J Radiating Shield Ass’y AQ
8-1 Not Available – Radiating Shield —
8-2 PRDARA103WJFW J Heat Sink-A AG
8-3 PRDARA104WJFW J Heat Sink-B AF
9 CANGTA118WJ01 J Tuner Angle Ass’y AQ
9-1 Not Available – Tuner Angle —
9-2 PSPAHA328WJZZ J Spacer AC
9-3 QEARZA058WJZZ J Gasket, x2 AH
10 GCOVAA624WJKB J Side Cover(L) AN
11 GCOVAA625WJKB J Side Cover(R) AN
12 GCOVAA678WJKA J SD Cover AE
14 LANGFA094WJFW J MAIN PWB Angle AL
15 LANGTA111WJN1 J CARD PWB Angle AQ
16 LBSHZA003WJZZ J Fan Bush, x8 AD
17 LHLDW1009CEZZ J Wire Holder, x1 AA
18 LHLDW1046CEZZ J Wire Holder, x1 AA
19 LHLDW1060CEZZ J Wire Holder, x1 AB
20 LHLDW1081GEZZ J Wire Holder, x2 AB
21 LHLDW1090GEZZ J Wire Holder, x1 AB
22 LHLDWA038WJZZ J Wire Holder, x1 AC
23 LX-BZ3434CEFN J Screw, x2 AB
24 LX-NZ3047GEZZ J Tuner Nut, x3 AA
25 NFANR0120CEZZ J Cooling Fan(S) AU
26 NFANR0126CEZZ J Cooling Fan(L) AT
27 NSFTZ0134CEFW J Shaft Screw, x6 AD
28 PSLDMA303WJFW J Front Shield AL
29 PSLDMA324WJFW J TMDS Shield AG
30 PSLDMA342WJFW J PC Card Shield AF
31 PSLDMA425WJFW J RCA Shield AD
32 PSLDMA404WJFW J DVI Shield AF
33 DUNTKC259FE05 – AV SUB Unit —
34 DUNTKC261FE05 – TMDS TX Unit —
35 DUNTKC266FE02 J PC CARD Unit BZ
36 DUNTKC267FE05 – DVI Unit —
37 DUNTKC427FE02 – CPU Unit —
38 DUNTKC483DE02 – FRONT Unit —
39 DUNTKC484DE02 – AUDIO-I/F Unit —
40 DUNTKC619FE05 J MAIN Unit CR
41 DUNTKC663FE01 – AV Unit —
42 RDENCA064WJN1 – POWER Unit —
43 RDENCA074WJN1 – DC/DC CONVERTER Unit —
44 B2SX4102BT J 1BIT AMP. Unit BL
45 QCNW-C598WJPZ J Connecting Cord AQ
46 QCNW-C033WJQZ J Connecting Cord AF
47 QCNW-C036WJQZ J Connecting Cord AU
48 QCNW-C026WJQZ J Connecting Cord AH
49 QCNW-C030WJPZ J Connecting Cord AF
50 QCNW-C011WJPZ J Connecting Cord AS
51 QCNW-C014WJQZ J Connecting Cord AG
52 QCNW-C018WJPZ J Connecting Cord AR
53 QCNW-C023WJQZ J Connecting Cord AE
54 QCNW-C024WJQZ J Connecting Cord AK
55 QCNW-C025WJQZ J Connecting Cord AQ
56 QCNW-C031WJQZ J Connecting Cord AL
57 QCNW-C034WJQZ J Connecting Cord AG
58 QCNW-C035WJQZ J Connecting Cord AE
59 QCNW-C041WJQZ J Connecting Cord AN
60 QCNW-C523WJQZ J Connecting Cord AM
61 QCNW-C524WJQZ J Connecting Cord AN
62 Not Available – Serial No. Label —
63 QEARBA009WJFW J Earth Spring, x1 AG
64 QEARZ0056CEFW J Earth Spring, x4 AC
65 XBPSN30P06000 J Screw, x4 AA
66 XEBSN26P06000 J Screw, x1 AA
67 XEBSN30P08000 J Screw, x4 AA
68 XJPSN30P08XS0 J Screw, x70 AA
69 LANGTA110WJFW J TMDS PWB Angle AP
70 LHLDWA023WJKZ J Wire Holder, x1 AC
71 LHLDW1121GEZZ J Wire Holder, x1 AB
72 LANGTA116WJN1 J DVI PWB Angle AN
73 LHLDWA035WJZZ J Wire Holder, x1 AC
74 LANGTA109WJN1 J AV PWB Angle AP
75 LHLDFA021WJZZ J Wire Holder, x1 AC
76 LHLDW1090GEZZ J Wire Holder, x2 AB
CABINET AND MECHANICAL PARTS

Ref. No. Part No. ★Description Code Ref. No. Part No. ★Description Code
8
TU-GAT
654321
A
B
C
D
E
F
G
H
CABINET AND MECHANICAL PARTS
T
SL
J
I
H
f
e
cd
R
N
A
a
M
U
VWR
F
G
d
b
G
F
G
F
A
A
I
I
H
H
E
W
BC
D
B
D
L
N
N
LMK
Z
Q
h
P
L
N
K
M
f
O
Z
QDEP
C
BH
I
T
S
j
j
g
g
j
j
cJU
b
a
Y
A
e
V
U
JYV
r
C
O
O
M
m
g
m
h
i
r
JU
Y
FB
C
i
G
ST
T
S
68
68
71 70
43 68
63 69
18
34 68
68
68
68
68
68
29
73
49
4
36
72
39
56
42
54
18
45
55
22
68
68
30
35
21
52
2
2-6 6-1
6-2
2-1 2-3
2-2
2-5
64
26
16 8
6
15
28
68 68
62
38
2-4
7-7
68
68
7
7-4
7-1
7-9
7-6
7-2
7-5
7-8
7-9
7-3
7-12
7-12
7-11
7-15
7-15
7-15
7-10
7-15
7-13
3
3-1
3-2 3-3
68 16
68
5
5-1 5-2
14
68
37
12
68
64 40
53
51
61
74
68
58 46
48
19
50
47
20
68
41
60
44
57
68
21
68
31
9
33
68
24
67
9-2
1-2
9-1
9-3
11
68
68
68
68
10
23 65 68 2766
1
1-1
1-3
4-1
4-2
68
32

Ref. No. Part No. ★Description Code Ref. No. Part No. ★Description Code
9
TU-GAT
SUPPLIED ACCESSORIES PACKING PARTS
(NOT REPLACEMENT ITEM)
S1 SPAKCB930WJZZ – Packing Case —
S2 SPAKFA421WJZZ – Packing Material —
S3 SPAKPA381WJZZ – Wrapping Paper —
S4 SPAKXA396WJZZ – Buffer Material —
S5 TLABK0001TAZZ – Carton Label —
SERVICE JIGS
(USE FOR SERVICING)
QCNW-C327WJQZ J Extension Cable, 10-pin AW
PC CARD-MAIN/AV(PC)
QCNW-C328WJQZ J Extension Cable, 7-pin AY
AV-AUDIO-I/F(SJ)
QCNW-C329WJQZ J Extension Cable, 15-pin AW
AV-1BIT AMP.(SA)
QCNW-C330WJQZ J Extension Cable, 8-pin AW
POWER-DC/DC(PI)
QCNW-C331WJQZ J Extension Cable, 7-pin AW
POWER-DC/DC(PJ)
QCNW-C332WJQZ J Extension Cable, 12-pin AY
AV-DC/DC(PA)
QCNW-C333WJQZ J Extension Cable, 4-pin BA
AUDIO-I/F-MAIN(SH)
QCNW-C334WJQZ J Extension Cable, 5-pin AU
TMDS-CPU(DU)
QCNW-C529WJQZ J Extension Cable, 5-pin AU
AV-TMDS(SF)
RUNTKA089WJZZ J Extension Cable, x2 CG
AV-AV SUB
X5
RF cable
X6
X1
X2
X3
X4
AC cord System cable
X7
Stand unit (for AVC System)
X1 GDAi-A104WJSB J Stand(for AVC System) AX
X2 PSPAHA314WJZZ J Stand Spacer, x4 AC
X3 GLEGGA013WJZZ J Stand Cushion, x4 AC
X4 XBPSN50P16JS0 J Stand Screw, x2 AB
åX5 QACCZA047WJPZ J AC Cord AT
X6 QCNWGA061WJZZ J RF Cable AL
X7 QCNW-B856WJZZ J System Cable BE
X8 RRMCGA263WJSA J Remote Control Unit BC
X9 SPAKPA321WJZZ J Wrapping Paper for Stand AD
X10 SSAKAA028WJZZ J Polyethylene Bag for Screw AB
X11 SSAKA0170CEZZ J Polyethylene Bag for Cable AB
X12 TLABHA072WJZZ J Label AN

Ref. No. Part No. ★Description Code Ref. No. Part No. ★Description Code
10
TU-GAT
PACKING OFTHE SET
★S1
★S4
★S5
★S2
X8
X1
X2
X3
X4
X5
X6
X7
X9
X10
X11
X12
★S3
★Not Replacement Item

11
TU-GAT

TU-GAT
COPYRIGHT © 2005 BY SHARP CORPORATION
ALL RIGHTS RESERVED.
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
SHARP CORPORATION
AV Systems Group
Quality & Reliability Control Center
Yaita, Tochigi 329-2193, Japan
TQ1880-S
Mar 2005 Printed in Japan
SY. KD
Design and Production Information
Design : Japan
Production : Japan