Read Sharp LC-10A3E (serv.man7) Service Manual online
1
LC-10A3E
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
to its original condition and only parts identical to those specified should be used.
MODEL
LC-10A3E
LCD COLOUR TELEVISION
SERVICE MANUAL
S51T1LC-10A3H
SHARP CORPORATION
Page
»
IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2
»
SPECIFICATIONS ................................................................................................................................ 3
»
OPERATION MANUAL ......................................................................................................................... 4
»
DIMENSIONS ....................................................................................................................................... 5
»
DISASSEMBLY OF THE SET ............................................................................................................... 6
»
ADJUSTING PROCEDURE OF EACH SECTION ............................................................................... 9
»
TROUBLE SHOOTING TABLE ........................................................................................................... 12
»
CHASSIS LAYOUT ............................................................................................................................. 16
»
BLOCK DIAGRAM .............................................................................................................................. 18
»
DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 19
»
SCHEMATIC DIAGRAM ..................................................................................................................... 20
»
PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 27
»
PARTS LIST
Ë
ELECTRICAL PARTS ..................................................................................................................... 31
MAIN UNIT ..................................................................................................................................... 31
TERMINAL UNIT ............................................................................................................................ 35
OPERATION UNIT ......................................................................................................................... 36
LED UNIT ....................................................................................................................................... 37
MAIN UNIT ..................................................................................................................................... 31
TERMINAL UNIT ............................................................................................................................ 35
OPERATION UNIT ......................................................................................................................... 36
LED UNIT ....................................................................................................................................... 37
Ë
ACCESSORIES PARTS ................................................................................................................. 37
Ë
PACKING PARTS ........................................................................................................................... 37
Ë
CABINET PARTS LOCATION ........................................................................................................ 38
Ë
CABINET AND MECHANICAL PARTS .......................................................................................... 39
»
PACKING OF THE SET ...................................................................................................................... 40
CONTENTS
SERVICE MANUAL
LCD COLOUR TELEVISION
MODEL LC-10A3E
TENTATIVE
2
LC-10A3E
CAUTION: FOR CONTINUED PROTECTION
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE. F3701 (1.25A, 250V), F3702
(1.25A, 250V), F3751 (2.0A, 250V) FUSE.
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE. F3701 (1.25A, 250V), F3702
(1.25A, 250V), F3751 (2.0A, 250V) FUSE.
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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 “
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
Ë
Service work should be perfomed only by qualified service technicians who are thor-
oughly familiar with all safety checks and the servicing guidelines which follow:
oughly familiar with all safety checks and the servicing guidelines which follow:
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.
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.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
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.
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.
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).
and connect the DC power cable into the receiver's
DC jack. (Do not use an isolation transformer for this
test).
•
Using two clip leads, connect a 50k 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.
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 resisor.
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 35V peak (this corresponds to 0.7
milliamp. peak AC.) or more is excessive and indicates
a potential shock hazard which must be corrected
before returning the monitor to the owner.
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 35V peak (this corresponds to 0.7
milliamp. peak AC.) or more is excessive and indicates
a potential shock hazard which must be corrected
before returning the monitor to the owner.
TO EXPOSED
METAL PARTS
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
KNOWN EARTH
GROUND
DVM
AC SCALE
50k ohms.
10W
0.15
µ
F
TEST PROBE
3
LC-10A3E
Specifications
LCD panel ............................................................................................... 10.4" TFT LCD
Number of dots .................................................................................. 921,600 dots VGA
Video colour systems ....................................................................... PAL/NTSC/SECAM
TV FUNCTION
TV Standard (CCIR) ..................................................................................... I/DK/BG
TV Tuning System ....................................................................... Auto preset 100 ch.
STEREO/BILINGUAL ............................................................................ NICAM, IGR
AUTO PRESET ................................................................................................... YES
CATV ..................................................................................................... ~Hyper Band
4-LINE COMB FILTER .............................................................................................. Yes
Luminance ...................................................................................................... 400 cd/m
2
Lamp life ................................................................................................... 60,000 Hours
Viewing angles ................................................................................................... H : 120°
V : 100°
Audio amplifier ................................................................................................. 1.0 W
×
2
Speakers ................................................................................................ 3
×
4 cm, 2 pcs
Terminals
AV1 .......................................................................................... AV-IN 1, S-VIDEO-IN
AV2 ................................................................................................................ AV-IN 2
AV OUT ......................................................................................................... AV-OUT
ANT ...................................................................................................................... DIN
H/P ........................................................................................... 3.5 mm ø jack (Rear)
OSD Language ....................... English/German/Dutch/French/Italian/Spanish/Swedish
Power supply .............................................................. DC 12 V, AC110-240 V, 50/60 Hz
Weight ........................................................................................ 1.9 kg w/o accessories
Accessories ............................ R/C, Batteries, Wall mount parts, AC adaptor, AC cord,
...........................................
AV cable for mini-jack
Design and specifications are subject to change without notice.
4
LC-10A3E
Operation Manual
Main unit (front view)
Main unit (rear view)
Remote control
BRIGHT
MENU
CH
TV/VIDEO
MAIN POWER
Power/standby 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 power is off).
lights when in the standby mode (the indicator will not light when
the power is off).
Remote sensor window
(The actual location is not visible)
Top control panel
TV/VIDEO
MAIN POWER
CH (
'
)/(
"
)
MENU
BRIGHT
Volume (+)/(–)
DISPLAY
MUTE
Ë
The MUTE, DISPLAY, MENU, Volume (+)/(–), CH (
'
)/(
"
), and TV/VIDEO buttons provide the same
functions as the buttons on the remote control.
(The MENU button has a slightly different function from the remote control button.)
(The MENU button has a slightly different function from the remote control button.)
DC12V
AV-OUT
AV-IN2
AV-IN1
AUDIO
AUDIO
AUDIO
V
V
V
S
R
L
POWER
INPUT
HEADPHONE
Adjust the set stand to an angle so that
the screen is easily visible. The set
stand can be opened up to 80
the screen is easily visible. The set
stand can be opened up to 80
°
.
Rear terminal section
AV input 1 terminal
• S-Video input
• Video input
• Audio R/L
• Video input
• Audio R/L
AV input 2 terminal
Headphone output
terminal
terminal
DC input terminal
Antenna input terminal
AV output terminal
VOL
–
TV/VIDEO
CH
VOL
+
CH
8
9
0
LCDTV
1
2
3
4
5
6
7
MENU
/
MENU
(POWER)
TV/VIDEO
CHANNEL SELECT
CH (
'
)/(
"
), Cursor control Up/Down
'
Selects next higher channel
"
Selects next lower channel
FLASHBACK
Returns to previous channel
Returns to previous channel
DISPLAY
Press...Displays receiving channel for 10 seconds.
Press...Displays receiving channel for 10 seconds.
Channel indication reduces in size after
about 10 seconds.
about 10 seconds.
Press again...Removes display.
MUTE
Press...Stops sound.
Press again...Returns sound to previous level.
Press...Stops sound.
Press again...Returns sound to previous level.
SOUND MODE SELECTOR
Switching audio mode.
Switching audio mode.
VOL (+)/( ), Cursor control Right/Left
