LC-60LE841E - Sharp TV Service Manual (repair manual)

lc-60le841e service manual
Model
LC-60LE841E
Pages
127
Size
21.8 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-60le841e.pdf
Date

Read Sharp LC-60LE841E Service Manual online

SERVICE MANUAL
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.
TopPage
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRECAUTION........................... i
Precautions for using lead-free solder ........................................... ii
End of life disposal.........................................................................iii
OUTLINE
MAJOR SERVICE PARTS ............................................................ iv
CHAPTER 1. SPECIFICATIONS
[1] 
SPECIFICATIONS (LC-60/70LE740E/RU,741E/S,743E)...........1-1
[2] 
SPECIFICATIONS (LC-60LE830E, RU/831E, S/833E)..............1-3
[3] 
SPECIFICATIONS (LC-80LE645E/RU,646E/S,648E)................1-5
CHAPTER 2. OPERATION MANUAL
[1] 
Parts Name (LC-60/70LE740E/RU,741E/S,743E)......................2-1
[2] 
OPERATION MANUAL (LC-60/70LE740E/RU,741E/
S,743E) .......................................................................................2-5
[3] 
Parts Name (LC-60LE830E, RU/831E, S/833E).........................2-6
[4] 
OPERATION MANUAL (LC-60LE830E, RU/831E, S/
833E) ........................................................................................2-10
[5] 
Parts Name (LC-80LE645E/RU,646E/S,648E)......................... 2-11
[6] 
OPERATION MANUAL (LC-80LE645E/RU,646E/S,648E)........2-15
CHAPTER 3. DIMENSIONS
[1] 
DIMENSIONS (LC-60/70LE740E/RU,741E/S,743E)..................3-1
[2] 
DIMENSIONS (LC-60LE830E, RU/831E, S/833E).....................3-3
[3] 
DIMENSIONS (LC-80LE645E/RU,646E/S,648E).......................3-4
CHAPTER 4. REMOVING OF MAJOR PARTS
[1] 
The location putting on the heat measure sheet.........................4-1
[2] 
Precautions for assembly............................................................4-3
CHAPTER 5. ADJUSTMENT
[1] 
ADJUSTMENT PROCEDURE (LC-60/70LE740E/
RU,741E/S,743E) .......................................................................5-1
[2] 
ADJUSTMENT PROCEDURE (LC-60LE840E/RU,841E/
S,843E) .....................................................................................5-22
[3] 
ADJUSTMENT PROCEDURE (LC-80LE645E/RU,646E/
S,648E) .....................................................................................5-44
CHAPTER 6. TROUBLESHOOTING TABLE
[1] 
TROUBLESHOOTING TABLE (LC-60/70LE740E/
RU,741E/S,743E) .......................................................................6-1
[2] 
LED flashing specification at the time of the error (LC-60/
70LE740E/RU,741E/S,743E)....................................................6-18
[3] 
TROUBLESHOOTING TABLE (LC-60LE840E/RU,841E/
S,843E) .....................................................................................6-22
[4] 
LED flashing specification at the time of the error (LC-
60LE840E/RU,841E/S,843E)....................................................6-39
[5] 
TROUBLESHOOTING TABLE (LC-80LE645E/RU,646E/
S,648E) .....................................................................................6-43
[6] 
LED flashing specification at the time of the error (LC-
80LE645E/RU,646E/S,648E)....................................................6-60
CHAPTER 7. MAJOR IC INFORMATIONS
[1] 
MAJOR IC INFORMATIONS (LC-60/70LE740E/RU,741E/
S,743E) .......................................................................................7-1
[2] 
MAJOR IC INFORMATIONS (LC-60LE840E/RU,841E/
S,843E) .......................................................................................7-2
[3] 
MAJOR IC INFORMATIONS (LC-80LE645E/RU,646E/
S,648E) .......................................................................................7-3
CHAPTER 8. OVERALL WIRING/SYSTEM BLOCK DIAGRAM
[1] 
OVERALL WIRING DIAGRAM (LC-60LE740E/RU,741E/
S,743E) .......................................................................................8-1
[2] 
OVERALL WIRING DIAGRAM (LC-70LE740E/RU,741E/
S,743E) .......................................................................................8-2
[3] 
OVERALL WIRING DIAGRAM (LC-60LE840E/RU,841E/
S,843E) .......................................................................................8-3
[4] 
OVERALL WIRING DIAGRAM (LC-80LE645E/RU,646E/
S,648E) .......................................................................................8-4
[5] 
SYSTEM BLOCK DIAGRAM (LC-60/70LE740E/RU,743E)..........8-5
[6] 
SYSTEM BLOCK DIAGRAM (LC-60/70LE741E/S)....................8-6
[7] 
SYSTEM BLOCK DIAGRAM (LC-60LE840E/RU,843E).............8-7
[8] 
SYSTEM BLOCK DIAGRAM (LC-60LE841E/S).........................8-8
[9] 
SYSTEM BLOCK DIAGRAM (LC-80LE645E/RU,648E).............8-9
[10]  SYSTEM BLOCK DIAGRAM (LC-80LE646E/S).......................8-10
Parts Guide
CONTENTS
No. S32W360LE741E
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,848E (1st Edition)
LC-60/70LE740E/RU
LC-60/70LE741E/S
LC-60/70LE743E
LC-60LE840E/RU
LC-60LE841E/S
LC-60LE843E
LC-80LE645E/RU
LC-80LE646E/S
LC-80LE648E
MODELS
LCD COLOUR TELEVISION
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.
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E (1st Edition)
i
LC60LE740E
Service Manual
 
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY PRECAUTION
„ WARNING
1. For  continued safety ,  no modifica tion  of any circuit sho uld  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:
3. Inspect all lead dress to make  certain that leads  are not pinched,
and  check  that har dware  is not lo dged  between  the chassis and
other metal parts in the receiver.
4. Inspect all protective devices su ch as non-metallic control knobs,
insulation  materials,  cabinet  backs,  adjustment  and comp artment
covers or shields, isolation resistor-capacitor networks, mechanical
insulators, etc.
5. To be sure that no shock hazard exists, check for leakage cur rent
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 paral-
leled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as electrical conduit or elec-
trical 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.
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
SAFETY NOTICE
Many  electrical  and  mechanical p arts  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.
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the 
servicing guidelines which follow:
CAUTION:
FOR CONTINUED PROTECTION AGAINST A
RISK OF FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
F7001 (5A/250V)
DVM
AC SCALE
1.5k ohm
10W
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
0.15
µF
TEST PROBE
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E (1st Edition)
 ii
Precautions for using lead-free solder
„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:
„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 dam-
age 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.
Lead-free wire solder for servicing
Part No.
Description
Code
ZHNDAi123250E
J
φ
0.3mm  250g (1roll) 
BL
ZHNDAi126500E
J
φ
0.6mm  500g (1roll)
BK
ZHNDAi12801KE
J
φ
1.0mm  1kg (1roll)
BM
L
F a
Indicates lead-free solder of tin, silver and copper.
L
F a/a
Indicates lead-free solder of tin, silver and copper.
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E (1st Edition)
iii
End of life disposal
End of life disposal
Page of 127
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Here you can read online and download Sharp LC-60LE841E Service Manual in PDF. LC-60LE841E service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp LC-60LE841E LCD. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.