Sharp LC-42LE40E Service Manual ▷ View online
LC-32LE40E-LC-42LE40E
1
SERVICE MANUAL
LCD COLOUR TELEVISION
LC-32LE40E
MODEL
LC-42LE40E
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its orig-
inal condition and only parts identical to those specified should be used.
inal condition and only parts identical to those specified should be used.
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRECAUTION ..................2
PRECAUTIONS FOR USING LEAD-FREE SOLDER ...........3
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ............................................................4
[2] OPERATION MANUAL .....................................................6
[3] DIMENSIONS .................................................................11
CHAPTER 2. REMOVING OF MAJOR PARTS
[1] ASSY/PANEL REMOVAL................................................12
[2] SET RE-ASSEMBLY.......................................................22
IMPORTANT SERVICE SAFETY PRECAUTION ..................2
PRECAUTIONS FOR USING LEAD-FREE SOLDER ...........3
CHAPTER 1. OPERATION MANUAL
[1] SPECIFICATIONS ............................................................4
[2] OPERATION MANUAL .....................................................6
[3] DIMENSIONS .................................................................11
CHAPTER 2. REMOVING OF MAJOR PARTS
[1] ASSY/PANEL REMOVAL................................................12
[2] SET RE-ASSEMBLY.......................................................22
CHAPTER 3. ADJUSTMENT PROCEDURE
[1] ADJUSTMENT PROCEDURE ........................................23
[2] SOFTWARE UPGRADE PRODUCE ..............................35
[1] ADJUSTMENT PROCEDURE ........................................23
[2] SOFTWARE UPGRADE PRODUCE ..............................35
CHAPTER 4. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE .......................................41
CHAPTER 5. MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATION .............................................50
[2] DETAIL ICs INFORMATION ...........................................62
[1] MAJOR IC INFORMATION .............................................50
[2] DETAIL ICs INFORMATION ...........................................62
CONTENTS
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM
[1] BLOCK DIAGRAM ..........................................................72
[2] WIRIGN DIAGRAM ……..................................................74
[1] BLOCK DIAGRAM ..........................................................72
[2] WIRIGN DIAGRAM ……..................................................74
CHAPTER 7. PRINTED WIRING BOARD
[1] MAIN UNIT PRINTED WIRING BOARD …..……............76
[2] POWER UNIT PRINTED WIRING BOARD ....................78
[3] KEY UNIT PRINTED WIRINGBOARD ............................82
[4] IR UNIT PRINTED WIRING BOARD ..............................82
CHAPTER 8. SCHEMATIC DIAGRAM
[1] MAIN SCHEMATIC DIGRAM .........................................83
[2] POWER SCHEMATIC DIGRAM .....................................96
[3] KEY SCHEMATIC DIGRAM …………….......................101
[4] IR SCHEMATIC DIGRAM ..........................
[1] MAIN UNIT PRINTED WIRING BOARD …..……............76
[2] POWER UNIT PRINTED WIRING BOARD ....................78
[3] KEY UNIT PRINTED WIRINGBOARD ............................82
[4] IR UNIT PRINTED WIRING BOARD ..............................82
CHAPTER 8. SCHEMATIC DIAGRAM
[1] MAIN SCHEMATIC DIGRAM .........................................83
[2] POWER SCHEMATIC DIGRAM .....................................96
[3] KEY SCHEMATIC DIGRAM …………….......................101
[4] IR SCHEMATIC DIGRAM ..........................
................
...102
CHAPTER 9. PARTS GAUILD
[1] SPARE PARTS LIST .........................
.........................
..103
[2] CABINET PARTS .........................................
..............
..151
[3] PACKING PARTS ………………………………………155
SHARP
SHARP CORPORATION
LC-32LE40E-LC-42LE40E
2
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRECAUTION
■
Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:
■
WARNING
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
CAUTION:
FOR CONTINUED PROTECTION AGAINST A
RISK OF FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
F9901/F9902 (6.3A/250V)
FOR CONTINUED PROTECTION AGAINST A
RISK OF FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
F9901/F9902 (6.3A/250V)
■
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform the following
safety checks:
3. 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.
4. 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.
5. To be sure that no shock hazard exists, check for leakage current in
the following manner.
• Plug the AC cord directly into a 220~240 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, sen-
sitivity 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 1.05 V peak (this corresponds to 0.7 mA peak AC.)
or more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.
DVM
AC SCALE
1.5k ohm
10W
0.15 µF
TEST PROBE
TO EXPOSED
METAL PARTS
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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 “
” 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.
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CONNECT TO KNOWN
EARTH GROUND
LC-32LE40E-LC-42LE40E
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PRECAUTIONS FOR USING LEAD-FREE SOLDER
■
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.
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.
LC-32LE40E-LC-42LE40E
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CHAPTER 1.
OPERATION MANUAL
[1] SPECIFICATIONS
Item
32” LCD COLOUR TV
Model: LC-32LE40E
Model: LC-32LE40E
42” LCD COLOUR TV
Model: LC-42LE40E
Model: LC-42LE40E
LCD screen size
32” diagonal
42” diagonal
Number of dots
3,147,264 dots (1366 x 768 x 3 dots)
6,220,800 dots (1920 x 1080 x 3 dots)
Video Colour System
PAL/SECAM/NTSC 3.58/NTSC 4.43/PAL 60
TV Function
TV-Standard
Analogue
CCIR (B/G, I, D/K, L/L’)
Digital
DVB-T (2K/8K OFDM), DVB-C
Receiving
Channel
Channel
VHF/UHF
ATV: IRA-E69, DVB-T: E5-E69
CATV
S-band, S1–S41ch
TV-Tuning System
Auto Preset 1599 ch, Auto Label, Auto Sort
Stereo/Bilingual
NICAM/A2
Audio amplifier
10 W x 2
10 W x 2
Speaker
132(H) x 27(W) x 26(D) mm
132(H) x 27(W) x 26(D) mm
Rear
ANTENNA
UHF/VHF 75 Ω
RS-232C
D-sub 9 pin male connector
SCART
SCART (AV input, Y/C input, RGB input, TV output )
PC IN
D-sub 15 pin (AV input), Ø 3.5mm jack (Audio input)
COMPONENT
Y/Pb(Cb)/Pr(Cr), RCA pin (L/R)
SPDIF OUT
Digital audio output
AV OUT
RCA pin (AV output)
HDMI 1
Digital video and audio input, ARC
HDMI 2
Digital video and audio input
Side
C. I. (Common Interface)
EN50221, R206001, CI Plus specification
AV IN
RCA pin (AV input)
USB
Software update, multi-media play
HEADPHONE
Ø 3.5mm jack (Audio output)
OSD Language
English, German, French, Italian, Dutch, Spanish, Greek, Portuguese, Swedish,
Finnish, Russian, Polish, Turkish, Hungarian, Czech, Slovak, Danish, Norwegian,
Estonian, Latvian, Lithuanian, Slovenian, Bulgarian, Croatian, Romanian, Serbian,
Ukrainian, Gaelic, Belarussian.
Finnish, Russian, Polish, Turkish, Hungarian, Czech, Slovak, Danish, Norwegian,
Estonian, Latvian, Lithuanian, Slovenian, Bulgarian, Croatian, Romanian, Serbian,
Ukrainian, Gaelic, Belarussian.
Power Requirement
AC 220–240 V, 50 Hz
Power Consumption
59 W (Standby < 0.3W) (Method
IEC62087)
IEC62087)
93 W (Standby < 0.3W) (Method
IEC62087)
IEC62087)
Weight
8.2 kg (Without stand), 9.4 kg (With
stand)
stand)
12.79 kg (Without stand), 15.72 kg
(With stand)
(With stand)
Operating temperature
0°C to +40°C
• As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without
prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in
individual units.
prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in
individual units.
NOTE
• Refer to the inside back cover for dimensional drawings.
• Audio cannot be output through the HDMI terminal.