DOWNLOAD Sharp LC-20A2E (serv.man2) Service Manual ↓ Size: 261.61 KB | Pages: 16 in PDF or view online for FREE

Model
LC-20A2E (serv.man2)
Pages
16
Size
261.61 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / text - page 1-16
File
lc-20a2e-sm2.pdf
Date

Sharp LC-20A2E (serv.man2) Service Manual ▷ View online

LC-20A2E
S11O1LC-20A2E
LCD COLOUR TELEVISION
SERVICE MANUAL
MODEL
LC-20A2E
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
»
ELECTRICAL SPECIFICATIONS ......................................................................................................... 3
»
OPERATION MANUAL ......................................................................................................................... 4
»
OUTLINE DIMENSION FIGURE .......................................................................................................... 5
»
REMOVING OF MAJOR PARTS .......................................................................................................... 6
»
ADJUSTING PROCEDURE OF EACH SECTION ............................................................................... 9
»
TROUBLE SHOOTING TABLE ........................................................................................................... 11
»
CHASSIS LAYOUT ............................................................................................................................. 17
»
BLOCK DIAGRAMS ............................................................................................................................ 20
»
DESCRIPTION OF SCHEMATIC DIAGRAM ..................................................................................... 24
»
SCHEMATIC DIAGRAMS ................................................................................................................... 25
»
PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 42
»
PARTS LIST
Ë
ELECTRICAL PARTS ..................................................................................................................... 47
MAIN UNIT ..................................................................................................................................... 47
SUB UNIT ....................................................................................................................................... 50
INVERTER UNIT ............................................................................................................................ 52
SWITCH UNIT ................................................................................................................................ 52
Ë
SUPPLIED ACCESSORIES PARTS .............................................................................................. 53
Ë
PACKING PARTS ........................................................................................................................... 53
Ë
CABINET PARTS LIST ................................................................................................................... 53
Ë
CABINET AND MECHANICAL PARTS .......................................................................................... 54
»
PACKING OF THE SET ...................................................................................................................... 55
 CONTENTS
SERVICE MANUAL
LCD COLOUR TELEVISION
MODEL LC-20A2E
SHARP CORPORATION
LC-20A2E
2
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345
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
Ë
Service work should be perfomed only by qualified service technicians who are thoroughly
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.
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)
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 110~240 volt AC outlet,
and connect the DC power cable into the receiver's DC
jack. (Do not use an isolation transformer for this test).
Using two clip leads, connect a 1.5k ohm, 10 watt resistor
paralleled by a 0.15
µ
F capacitor in series with all
exposed metal cabinet parts and a known earth ground,
such as electrical conduit or electrical ground connected
to earth ground.
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.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
DVM
AC SCALE
50k ohms.
10W
0.15 
µ
F
TEST PROBE
CAUTION
FOR CONTINUED PROTECTION
AGAINST A RISK OF FIRE REPLACE
ONLY WITH SAME TYPE FUSE.
F1 (2A, 250V), F2 (1.6A, 250V), F3 (1.6A, 250V),
F4 (315mA, 250V) FUSE.
LC-20A2E
3
ELECTRICAL SPECIFICATIONS
Items ............................................................. 20" LCD COLOUR TV, Model: LC-20A2E
LCD panel .................................................................................................. 20" TFT LCD
Number of pixels ........................................................................................ 921,600 dots
Video colour system ........................................................................ PAL/SECAM/NTSC
TV FUNCTION
TV Standard (CCIR) ....................................................................... BG/L/DK, I, M, N
TV Tuning System ....................................................................... Auto preset 200 ch.
STEREO/BILINGUAL ............................................................................ NICAM, IGR
AUTO PRESET .................................................................................................... Yes
CATV ..................................................................................................... ~Hyper Band
Brightness ....................................................................................................... 450 cd/m
2
Lamp life .................................................................................................... 40,000 hours
Viewing angles ........................................................................................H: 160
°
 V: 160
°
Audio amplifier ................................................................................................. 2.6 W 
×
 2
Speakers ................................................................................................ 80 mm 
φ 
2 pcs.
Terminals
AV-IN1 ...................................................................................... RGB, VIDEO, AUDIO
AV-IN2 ............................................................................... S-VIDEO, VIDEO, AUDIO
OUT ................................................................................................................ AUDIO
Antenna ............................................................................................................... DIN
Headphones ............................................................................ 3.5 mm 
φ 
jack (Front)
OSD language ........................ English/German/French/Spanish/Italian/Swedish/Dutch
Power requirement ................................................... DC 13V, AC 110 - 240 V, 50/60 Hz
Weight ................................................................. 10.5 kg, incl. stand, excl. accessories
Accessories ......................................................... R/C, Batteries, AC adaptor, AC cord,
                                                                         
Speaker nets, Operation manual,
                                                                         
Cable clamp
Specifications are subject to change without prior notice.
LC-20A2E
4
OPERATION MANUAL
Remote control
Controls
Terminals
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 main power is off).
Front control panel
Remote sensor window
(The actual location is not visible.)
To change the vertical angle
of the LCD TV set, tilt the
screen up to 10 degrees
forward or 20 degrees back-
ward. The TV set can also be
rotated 90 degrees horizon-
tally. Please adjust the angle
so that the TV set can be
watched most comfortably.
Front view
Note:
TV/VIDEOCH(
)/(
), and Volume (+)/(–) 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 using the
remote control.
MENU
+
TV/VIDEO
C H
Speakers
Headphones
MENU
Volume(+)/(–)
CH(
)/(
)
TV/VIDEO
MAIN POWER
Removing Back Cover
POWER INPUT 
DC 13 V
AUDIO OUT (R)
AUDIO OUT (L)
S-VIDEO
VIDEO
AUDIO (R)
AUDIO (L)
AV-IN 2
Rear view
When connecting the cords to the terminals, remove the back
cover by gently pulling the part marked 
forward.
To replace the back cover, first fit the four top clips (
1
) into the
corresponding slots of the terminal section, and then align the
four side clips (
2
) with the corresponding slots. Then, press the
marked parts (
3
) until the two hooks on the bottom of the cover
lock in place with a click.
Antenna
AV-IN1 (21-pin Euro-SCART)
8
0
9
1
E
T
TEXT
SOUND
TV/VIDEO
END
INFO
MENU
2
3
4
5
6
7
i
M
CH
CH
OK
(Power)
OK, Programme Table
INFO
Turns on the menu information
when the menu is displayed.
Mute
SOUND
Switches the sound mode.
TEXT
Yellow, Standard Value
Green, Sound Menu
Blue, Teletext  Subtitle
TV/VIDEO
Channel Select
MENU
Volume (+)/(–),
Right / Left Selection
Flashback
Returns to the
previous channel.
Red, Picture Menu
CH (    )/(    ), 
Upward / Downward Selection
END, Status Display
Turns on the status display
when the menu is not
displayed.
Page of 16
Display

Sharp LC-20A2E (serv.man2) Service Manual ▷ Download

  • DOWNLOAD Sharp LC-20A2E (serv.man2) Service Manual ↓ Size: 261.61 KB | Pages: 16 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp LC-20A2E (serv.man2) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp LC-20A2E (serv.man2) LCD. Information contained in Sharp LC-20A2E (serv.man2) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.