LC-26LE430E - Sharp TV Service Manual (repair manual)

lc-26le430e service manual
Model
LC-26LE430E
Pages
127
Size
15.96 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-26le430e.pdf
Date

Read Sharp LC-26LE430E Service Manual online

LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E 
SERVICE MANUAL 
No. 
 
                       
LED COLOUR TELEVISION 
 
 
LC-19LE430E 
LC-22LE430E 
LC-26LE430E 
MODELS
   
LC-32LE430E 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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 PRE-
CAUTION .....................................................................2 
Precautions for using lead-free solder ......……….........3 
 
CHAPTER 1. OPERATION MANUAL 
[1] SPECIFICATIONS ..................................................4 
[2] OPERATION MANUAL ...........................................5 
[3] DIMENSIONS ........................................................10 
 
CHAPTER 2. REMOVING OF MAJOR PARTS 
[1] REMOVING OF MAJOR PARTS ..........................11 
 
CHAPTER 3. ADJUSTMENT PROCEDURE 
[1] ADJUSTMENT PROCEDURE...............................31 
[2] SERVICE MODE....................................................44 
[3]
 
SOFTWARE UPGRADE PROCEDURE..............
..
45 
 
CHAPTER 4. TROUBLESHOOTING TABLE 
[1] POWER BOARD TROUBLESHOOTING TABLE......46
[2] MAIN BOARD TROUBLESHOOTING TABLE...........50
 
CHAPTER 5. MAJOR IC INFORMATIONS 
[1] MAJOR IC INFORMATIONS...................................62 
 
CONTENTS 
CHAPTER 6. BLOCK DIAGRAM/WIRING DIAGRAM 
[1] BLOCK DIAGRAM...................................................89 
[2] POWER MANAGEMENT  BLOCK DIAGRAM.........90 
[3] WIRING DIAGRAM .................................................91 
 
CHAPTER 7. PRINTED WIRING BOARD 
[1] MAIN UNIT PRINTED WIRING BOARD .................95 
[2] POWER UNIT PRINTED WIRING BOARD..............97 
[3] KEY UNIT PRINTED WIRING BOARD ...................102 
[4] IR UNIT PRINTED WIRING BOARD .......................103 
 
CHAPTER 8. SCHEMATIC DIAGRAM 
[1] MAIN SCHEMATIC DIAGRAM  ..............................105 
[2] POWER SCHEMATIC DIAGRAM...........................118 
[3] KEY SCHEMATIC DIAGRAM..................................125 
[4] IR SCHEMATIC DIAGRAM......................................126 
 
CHAPTER 9. Parts Guide 
[1] SPARE PARTS LIST...............................................128 
[2] CABINET PARTS ...................................................188 
[3] SUPPLIED ACCESSOORIES.................................196 
[4] PACKING PARTS....................................................197 
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.
SHARP CORPORATION 
LC-19LE430E, LC-22LE430E, LC-26LE430E, LC-32LE430E 
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. 
42"         F901 (T6.3AH/250V) 
26"/32"   F901 (T5AH/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-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E 
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-19LE430E, LC-22LE430E, LC-26LE430E, LC-32LE430E 
4  
CHAPTER 1. 
OPERATION MANUAL
 
 
[1] SPECIFICATIONS
 
 
Specification 
 
Item 
19" LCD COLOUR TV, 
Model: LC-19LE430 
22"LCD COLOUR TV, 
Model: LC-22LE430 
26″LCD COLOUR TV, 
Model: LC-26LE430 
32″ LCD COLOUR TV, 
Model: LC-32LE430 
LCD screen size 
19” diagonal 
22” diagonal 
26” diagonal 
32” diagonal 
Number of dots 
3,147,264 dots 
(1366 × 768 × 3 dots) 
6,220,800 dots 
(1920 × 1080 × 3dots) 
3,147,264 dots 
(1366 × 768 × 3 dots) 
6,220,800 dots 
(1920 × 1080 × 3dots) 
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 
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 
3W × 2 
3W × 2 
5W × 2 
10W × 2 
Speaker 
30 (H) × 117 (W) × 23 
(D) mm 
30 (H) × 117 (W) × 23 
(D) mm 
38 (H) × 164 (W) × 23 
(D) mm 
30 (H) × 164 (W)  × 32 
(D) mm 
Rear 
Antenna UHF/VHF 
75Ω 
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 
Side 
C. I. (Common Interface) 
EN50221, R206001, CI Plus specification 
AV IN 
RCA pin (AV input) 
USB 
Software update, multi-media play 
Headphones 
Ø 3.5mm jack (Audio output) 
HDMI 2 
Digital video and audio input 
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. 
Power Requirement 
AC 220–240 V, 50 Hz 
Power Consumption 
20W (Standby < 0.3W)  
(Method IEC62087) 
30W (Standby < 0.3W)  
(Method IEC62087) 
45W (Standby < 0.3W)  
(Method IEC62087) 
90W (Standby < 0.3W)  
(Method IEC62087) 
Weight 
3.3kg (Without stand), 
3.7kg (With stand) 
4.0kg (Without stand), 
4.5kg (With stand) 
6.4kg (Without stand), 
7.4kg (With stand) 
8.8kg (Without stand), 
10.1kg (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. 
 
NOTE 
•      Refer to the inside back cover for dimensional drawings.  
•      Audio cannot be output through the HDMI terminal. 
 
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Here you can read online and download Sharp LC-26LE430E Service Manual in PDF. LC-26LE430E service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp LC-26LE430E 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.