Sharp Aquos LC 15B1U Manuale utente
1
LC-15B1U
SHARP CORPORATION
S62K9LC-15B1U
LCD COLORTELEVISION
SERVICE MANUAL
MODEL LC-15B1U
In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
original condition and only parts identical to those specified
be used.
Page
»IMPORTANT SERVICE SAFETY PRECAUTION................................................................................. 2
»PRECAUTIONS FOR USING LEAD - FREE SOLDER........................................................................ 4
»SPECIFICATIONS ................................................................................................................................ 5
»OPERATION MANUAL ......................................................................................................................... 6
»DIMENSIONS ....................................................................................................................................... 7
»REMOVING OF MAJOR PARTS .......................................................................................................... 8
»ADJUSTING PROCEDURE OF EACH SECTION ............................................................................. 11
»TROUBLE SHOOTING TABLE ........................................................................................................... 23
»CHASSIS LAYOUT ............................................................................................................................. 28
»BLOCK DIAGRAMS............................................................................................................................ 30
»DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 32
»SCHEMATIC DIAGRAMS ................................................................................................................... 33
»PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 47
»PARTS LIST
ËELECTRICAL PARTS..................................................................................................................... 62
MAIN UNIT ..................................................................................................................................... 62
TERMINAL UNIT............................................................................................................................ 66
CONTROL UNIT ............................................................................................................................ 69
LED UNIT ....................................................................................................................................... 69
INVERTER UNIT............................................................................................................................ 69
ËCABINET PARTS LIST................................................................................................................... 70
ËSUPPLIED ACCESSORIES PARTS.............................................................................................. 70
ËPACKING PARTS ........................................................................................................................... 70
ËCABINET AND MECHANICAL PARTS.......................................................................................... 71
»PACKING OF THE SET ...................................................................................................................... 73
CONTENTS
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
LC-15B1U
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SAFETY NOTICE
Many electrical and mechanical parts in LCD 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 and etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by “ å”
IMPORTANT SERVICE SAFETY PRECAUTION
ËServiceworkshouldbeperfomedonlybyqualifiedservicetechnicianswhoarethoroughlyfamiliar
withallsafetychecksandtheservicingguidelineswhichfollow:
and shaded areas in the
Replacement Parts Lists
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.
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND
DVM
AC SCALE
50k ohm
10W
0.15 µF
TEST PROBE
•Use an AC voltmeter having with 5000 ohm per volt, or
higher, sensitivity or measure the AC voltage drop
across the resisor.
•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 and 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 0.75V peak (this corresponds to 0.5
milliamp.peak AC.) or more is excessive and indicates
a potential shock hazard which must be corrected
before returning the monitor to the owner.
BEFORE RETURNING THE 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 and 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 110~240 volt AC outlet,
and connect the DC power cable into the receiver's
DC jack. (Do not use an isolation transformer for this
test).
•Usingtwoclipleads,connect a50kohm,10wattresistor
paralleled by a 0.15µF capacitor in series with all
exposedmetalcabinet partsand aknownearth ground,
suchaselectrical conduitorelectricalground connected
to an earth ground.
CAUTION
FOR CONTINUED PROTECTION
AGAINST A RISK OF FIRE REPLACE
ONLY WITH SAMETYPE FUSE.
F3701 (2A, 125V),F6500 (1.6A, 125V),F6501(1.6A,
125V) FUSE.
A V
3
LC-15B1U
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AVIS POUR LA SECURITE
De nombreuses pièces, électriques et mécaniques, dans
les téléviseurs présentent des caractéristiques spéciales
relatives àla sécurité, qui ne sont souvent pas évidentes
àvue. Le degréde protection ne peut pas être
nécessairement augmentée en utilisant des pièces de
remplacement étalonnées pour haute tension, puissance,
etc.
Les pièces de remplacement qui présentent ces
caractéristiques sont identifiées dans ce manuel; les
pièces électriques qui présentent ces particularités sont
PRECAUTIONS A PRENDRE LORS DE LA REPARATION
ËNe peut effectuer la réparation qu’un technicien spécialisé qui s’est parfaitement accoutumé
à toute vérification de sécurité et aux conseils suivants.
identifiées par la marque “å”et hachurées dans
la liste
des pièces de remplacement et les diagrammes
schématiques.
Pour assurer la protection, ces pièces doivent être
identiques àcelles utilisées dans le circuit d’origine.
L’utilisation de pièces qui n’ont pas les mêmes
caractéristiquesquelespiècesrecommandéesparl’usine,
indiquées dans ce manuel, peut provoquer des
électrocutions, incendies, radiations X ou autres acci-
dents.
AVERTISSEMENT
1. N’entreprendre aucune modification de tout circuit.
C’est dangereux.
2. Débrancher le récepteur avant toute réparation.
VERIFICATIONS CONTRE L’INCEN-DIE ET
LE CHOC ELECTRIQUE
Avant de rendre le récepteur à l’utilisateur, effectuer
les vérifications suivantes.
1. Inspecter tous les faisceaux de câbles pour s’assurer
que les fils ne soient pas pincés ou qu’un outil ne soit
pas placéentre le châssis et les autres pièces
métalliques du récepteur.
2. Inspecter tous les dispositifs de protection comme les
boutons de commande non-métalliques, les isolants,
le dos du coffret, les couvercles ou blindages de
réglageetdecompartiment,lesréseauxderésistance-
capacité, les isolateurs mécaniques, etc.
3. S’assurer qu’il n’y ait pas de danger d’électrocution en
vérifiant la fuite de courant, de la facon suivante:
•Brancher le cordon d’alimentation dans la prise CA de
110~240 V et le câble d’alimentation CC dans le jack
du moniteur. (Ne pas utiliser un transformateur pour
cet essai.)
•A l’aide de deux fils àpinces, brancher une résistance
de 1,5kΩ10 watts en paralléle avec un condensateur
de 0,15µF en série avec toutes les pièces métalliques
exposées du coffret et une terre connue comme une
conduite électrique ou une prise de terre branchée à
la terre.
•Utiliser un voltmètre CA d’une sensibilitéd’au moins
5000Ω/V pour mesurer la chute de tension en travers
de la résistance.
•Toucher avec la sonde d’essai les piéces métalliques
exposées qui présentent une voie de retour au châssis
(antenne, coffret métallique, tête des vis, arbres de
commande et des boutons, écusson, etc.) et mesure
la chute de tension CA en-travers de la résistance.
Toutes les vérifications doivent être refaites aprés avoir
inverséla fiche du cordon d’alimentation. (Si
nécessaire, une prise d’adpatation non polarisée peut
être utilisée dans le but de terminer ces vérifications.)
Une valeur de 0.75 V RMS ou plus (correspond à0.5
mA C.A.) est excessive et implique un danger de
secousse électrique, qui devra être suppriméavant
de retourner l'appareil àl'utilisateur.
0.15 µF
SONDE D'ESSAI
VERS PIECES
METALLIQUES
EXPOSEES
VTVM
ECHELLE CA
50K OHMS
10W
CANNECTER A
UNE MASSE DE
TERRE CONNUE
PRECAUTION
POUR LA PROTECTION CONTINUE
CONTRE LES RISQUES D’INCENDIE,
REMPLACER LE FUSIBLE PAR UN FUSIBLE
DE MEME TYPE F3701 (2A, 125V), F6500
(1.6A, 125V), F6501 (1.6A, 125V) FUSE.
A V
LC-15B1U
4
ËPrecautions for using lead-free solder
1Employing lead-free solder
“Main PWB”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:
Indicates lead-free solder of tin, silver and copper.
2Using 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.
3Soldering
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.
Special attention must be paid to coils of L6500 - L6503.
Part No. ★Description Code
ZHNDAi123250E J φ0.3 mm 250 g (1 roll) BL
ZHNDAi126500E J φ0.6 mm 500 g (1 roll) BK
ZHNDAi12801KE J φ1.0 mm 1 kg (1 roll) BM
Lead-free wire solder for servicing
5
LC-15B1U
SPECIFICATIONS
LCD panel................................................ 15" Advanced Super View & Black TFT LCD
Number of dots ..................................................................................921,600 dots VGA
Video color system ..............................N358/N443/PAL/PAL-M/PAL-N/SECAM/PAL-60
TV Function
Destination......................................................................................USA/Latin A/Twn
TV-Standard (CCIR) ................................................................. NTSC/PAL-M/PAL-N
TV-Tuning System...................................................................................PLL 181 ch.
Stereo ..................................................................................................... MTS + SAP
CATV.............................................................................................................. 125 ch.
4-line comb filter ....................................................................................................... Yes
Audio output.....................................................................................................2.1 W x 2
Speakers............................................................... 1-37/64 x 2-3/4 in. (4 x 7 cm), 2 pcs.
Terminals
AV1 ........................................................................................... AV-IN1, S-VIDEO-IN
AV2 ...................................................................................................AV-IN2/AV-OUT
Component ..................................................................COMPONENT-IN, AUDIO-IN
Antenna ..........................................................................................................F-Type
Headphone ...................................................................... Mini-jack for stereo (3.5 φ)
PC Card slot ...................................................... PC Card Type ll (PC Card adapter)
Image File Format............................................. JPEG files complying with DCF format
OSD language ..........................................................................English/French/Spanish
Power supply........................................................... DC 12 V, AC 110 - 240 V, 50/60 Hz
Power consumption ............................................................AC 43 W (With AC adapter)
DC 37 W (DC 12 V)
Weight.......................................................................11.7 lbs (5.3 kg), w/o accessories
Accessories ................................................ Remote Control, Batteries, Antenna cable,
AC adapter, AC cord, Cable clamp
Æ The LCD display is manufactured with concentrated precision technology, and has
effective pixels of more than 99.99%. 0.01% of them may be missing or all the time.
This is normal.
Specifications are subject to change without prior notice.
LC-15B1U
6
OPERATION MANUAL
Main unit (Front view)
Remote Control
TV/VIDEO, CH ( )/( ), VOL (–)/(+), and MENU on the main unit have the same functions as the same buttons
on the remote control. Fundamentally, this operation manual provides a description based on operation with the
remote control.
POWERSLEEP
VOL CH MENU TV/VIDEO MAIN POWER
VOL (–)/(+)
CH ( )/( )
MENU
TV/VIDEO
MAIN POWER
Speaker
SLEEP indicator
The SLEEP indicator lights up red when
the SLEEP TIMER is set to on.
Speaker
Upper control panel
Remote sensor window
To change the vertical angle of the LCD
TV set, tilt the screen up to 5 degrees
forward or 10 degrees backward. The
TV set can also be rotated 50 degrees
horizontally. Please adjust the angle so
that the TV set can be watched most
comfortably.
POWER indicator
A green indicator lights when the power is
on and a red indicator lights when in the
standby mode (the indicator will not light
when the main power is off).
PC Card slot
Note
VIDEO
AUDIO
L
Y
P
B
P
R
R
AUDIO
L
R
COMPONENT
AV-IN2/OUT
ANT.
VIDEO
S-VIDEO
AUDIO
L
R
HEAD
PHONE
POWER
INPUT
DC12V
AV-IN1
VOLCH MENUTV/VIDEOMAINPOWER
PC CardPC Card
Antenna terminal
AUDIO (L)
AUDIO (R)
HEADPHONE
POWER INPUT
(DC 12V)
AUDIO (L)
AUDIO (R)
VIDEO
Y
P
R
P
B
AV-IN2/OUT
COMPONENT
AUDIO (L)
AUDIO (R)
VIDEO
S-VIDEO
AV-IN1
PC Card slot
Main unit (Rear view)
7
LC-15B1U
DIMENSIONS
(Unit: Inch/mm)
CHVOL TV/VIDEOMENU MAINPOWER
POWER
INPUT
DC12V
ANT.
HEAD
PHONE
S-VIDEO
R
AUDIO
VIDEO
AV-IN1
L
AV-IN 2/OUT
COMPONENT
R
AUDIO
VIDEO
L
R
AUDIO
L
PR
PB
Y
15-
1/32
/381.7
2-
13/32
/61.12-
7/32
/56.5
2-
19/32
/66
19-
1/16
/484
12-
1/64
/305.3
3-
15/16
/100
11-
7/8
/301.6
5-
57/64
/149.5 1-
29/32
/48.5
1-
1/16
/27
2-
13/32
/61.1
3-
57/64
/98.8
7-
51/64
/198
11-
59/64
/303
5-
57/64
/149.5
9-
1/64
/229
14-
3/8
/365.2
15/32
/11.8
3-
15/16
/100
LC-15B1U
8
Terminal PWB
LED PWB
Control PWB
Main PWB Inverter PWB
P3601
SC3403
P3702
P3500
P3504
P6500 P6501
6
6
6
66
666
6
6
6
6
6
P3501
P3503
P3703
P6502
SC2001
P2004
P2003
SC1203
SC1202 SC1201
P4005
5-2
5-2
5-1
5-2
PC Card Frame Angle
PC Card PWB
[ CAUTION ]
When you attach FFC , a
Black dot mark should be
on a card unit side
REMOVING OF MAJOR PARTS
1. Remove two Rear covers.
2. Remove the Table stand fixing screws (4 pcs.).
3. Remove the Cabinet B fixing screws (10 pcs.) and detach the cabinet.
4. Push on the hooksof the Cabinet B, open the cabinet and detach eight hooks,
and then detach the Cabinet B.
5. Remove the PC card
5-1. Detach the connector.
5-2. Remove the PC card frame angle
fixing screws (2 pcs).
6. Detach the connector from each PWB.
Cabinet B
PC Card Slot
PC Card Eject button
Table stand
Rear cover (L)
1
2
33
3
3
3
1
4
4
444
4
4
4
Rear
cover (S)
9
LC-15B1U
7. Remove the Main PWB fixing screws (3 pcs.).
8. Remove the Inverter PWB fixing screw (2 pcs.).
9. Remove the Terminal PWB fixing screws (4 pcs.).
10. Remove the LED PWB fixing screws (2 pcs.).
11. Remove the Control PWB fixing screws (2 pcs.).
12. Remove the LCD Unit fixing screws (4 pcs.).
9
8
12
Terminal PWB
Chassis Frame
Main PWB
Inverter PWB
11
LED PWB
7
Control PWB
10
LCD Unit
12
12 12
LC-15B1U
10
13. Remove the LCD display unit fixing screws (4 pcs.).
14. Detach the Reflection/deflection sheet, Prism sheet and Diffusion sheet.
15. Detach four Reflection mirrors.
16. Remove the Fluorescent lamp.
17. Detach the Light guide plate.
18. Detach two Lamp reflection sheets.
Shielding plate
(PSLDM4689CEFW)
Lamp reflection sheet-1
(PSHEP0284CEZZ)
Light guide plate
(PGiDM0070CEZZ)
Fluorescent lamp
(KLMP-0122CEZZ)
Lamp reflection sheet-2
(PSHEP0285CEZZ)
18 19
14
17
Reflection mirror
Reflection mirror
15
14
Reflection/deflection sheet
(PSHEP0283CEZZ)
LCD display unit
(RLCDTA003WJZZ)
16
Diffusion sheet
(PSHEP0281CEZZ)
Prism sheet
(PSHEP0282CEZZ)
16
Indice
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