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

LC-19LE430E, LC-22LE430E, LC-26LE430, LC-32LE430E 

1 

No. 

 

                       

LED COLOUR TELEVISION 

 

 

 
 
 
 
 

 

 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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 

 

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  

■

  

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 

 

 

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 

3 

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. 

 

 
[1] SPECIFICATIONS 

 

 

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.