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Sharp LC-26SB24U A Service Manual
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Sharp LC-26SB24U A Service Manual

Sharp LC-26SB24U A Service Manual

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Download this manual See also: Operating Manual
This model is based on the LC-26SB24U and is changed some parts. This Service Manual covers the
modifications alone. For the points, refer to the LC-26SB24U (S48OKLC26SB24) Service Manual.
DIFFERENCES FORM BASE MODEL
LIST OF CHANGE PARTS
PARTS GUIDE

SHARP CORPORATION

SERVICE MANUAL

LCD COLOR TELEVISION

LC-26SB24U A
MODEL
OUTLINE
CONTENTS
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
S88OOLC26SB24

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Summary of Contents for Sharp LC-26SB24U A

  • Page 1: Service Manual

    SERVICE MANUAL S88OOLC26SB24 LCD COLOR TELEVISION LC-26SB24U A MODEL OUTLINE This model is based on the LC-26SB24U and is changed some parts. This Service Manual covers the modifications alone. For the points, refer to the LC-26SB24U (S48OKLC26SB24) Service Manual. CONTENTS...
  • Page 2 DIFFERENCES FROM BASE MODEL LIST OF CHANGE PARTS REF. No. DESCRIPTION LC-26SB24U LC-26SB24U A NOTE MECHANICAL PARTS FRONT CABI ASS'Y 7A708A012A 7A708A030A Parts change 101G FELT SHEET 25x25xT1.0 800WQ00131 ----- Parts change COVER LCD ASS'Y 7G761A051A 7G761A052A Parts change 106A...
  • Page 3 REF. No. DESCRIPTION LC-26SB24U LC-26SB24U A NOTE ELECTRICAL PARTS IC2805 S34N02PE01 S36T01AE01 Parts change MEMORY DATA EEPROM 256K 12C AT24C256BN-10SU-1.8 L3004 COIL 0216MG220M 021UMK220P Parts change B2800 CORE,BEADS BLM18PG181SN1D 024HC51816 024AC5181J Parts change B2813 CORE,BEADS BLM18PG121SN1D 024HC51216 024BC5121J Parts change...

  • Page 4: Electrical Adjustments

    30 BACK LIGHT MAX 31 BACK LIGHT MIN 32 BRIGHT CENT 33 BRIGHT MAX 34 BRIGHT MIN 35 TINT 36 SHARP H1 MAX 37 SHARP H1 MIN 38 SHARP H2 MAX 39 SHARP H2 MIN 40 SHARP V1 MAX 41 SHARP V1 MIN...
  • Page 5 PARTS GUIDE LCD COLOR TELEVISION LC-26SB24U A MODEL CONTENTS PRINTED CIRCUIT BOARDS ....................G-1~G-8 SCHEMATIC DIAGRAMS ....................H-1~H-42 MECHANICAL EXPLODED VIEW ..................J1-1~ J1-3 MECHANICAL REPLACEMENT PARTS LIST ..............K1-1 ELECTRICAL REPLACEMENT PARTS LIST ..............K2-1~K2-7 CAUTION: SINCE THESE PARTS MARKED BY ! ARE CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY.
  • Page 6 PRINTED CIRCUIT BOARDS DIGITAL (TOP SIDE) CP6202 C6202 CEH424A D6202 C6560 C6556 C5819 L6551 C5833 TU5801 C5825 IC6551 B5804 C6564 C5826 R5808 R5809 C5839 C5827 C5841 C5830 NR6551 C4329 R4309 X6551 TUNER R4323 C5801 C5803 C4332 W894 B4308 R4329 R4317 R4326 Q4306 Q4304...
  • Page 7 PRINTED CIRCUIT BOARDS DIGITAL (BOTTOM SIDE) R5813 C2968 C5818 C5834 C5824 C5835 C5817 R5810 IC6552 IC6553 C5837 R5812 C5838 R5811 C5840 Q6201 Q6202 C3037 R4350 R4331 C2836 W889 R4318 C2834_1 R4352 IC3003 R4349 R4319 R4348 C2837_1 R2847 W802 R4351 C2839 C4346 C3605 R3610...
  • Page 8 PRINTED CIRCUIT BOARDS POWER/REMOCON/OPERATION (INSERTED PARTS) SOLDER SIDE W829 R406 D402 R410 W004 D410 W828 D412 D407 L401 Q401 R498 C475 R423 D426 CP404 Q406 R434 R401 W886 FH402 F401 FH401 R421 D427 D408 D425 W834 AS MARKED. Q407 B404 - REPLACE W005 C459...
  • Page 9 PRINTED CIRCUIT BOARDS POWER/OPERATION (CHIP MOUNTED PARTS) SOLDER SIDE R2213 R2212 R2202_2 R2203_2 R2206_2 R2201 R2214 CEG359A CEG358A CEG353A Q408 Q410 R4207 R4203 R4216 IC6502 IC411 R4215 Q420 D4211 R505 Q416 R493_1 R458 D4212 Q423 D4210 R467 R446 Q419 R444 Q4211 Q409 R4273...
  • Page 10 FLASH SCHEMATIC DIAGRAM (DIGITAL PCB) EEP/PC_TOOL_JIG_CON CP2801 SCALER IC CP2803 A2001WV-9A A2001WV-12A IC2801 R8J66954BG ACCESSORY D3.3V NC/RESET RESET_N D3.3V TRST_N RESET_N D3.3V TRST_N PC_TOOL_RX BT001 AC120V_60Hz PC_TOOL_TX R2807 MODE0 TM101 R6P(AR)2P WO GM PET EU CD3805 PC_TOOL_TX ASEBRKAK_N PC_TOOL_RX ASEBRKAK_N 076B0MQ051 QACCDA038WJPZ MODE1...
  • Page 11 DDR2 SCHEMATIC DIAGRAM (DIGITAL PCB) R2823 DARAS_N DDR_SDRAM IC IC2802 HY5PS561621BFP-Y5 R2824 DACKE DAA0 DAQ0 SCALER IC NR2805 DAA1 DAQ1 IC2801 R8J66954BG CRA108270JV DABA1 DAA2 DAQ2 DAODT DAA3 DAQ3 R2825 DACLK DAA4 DAA4 DAQ4 SDCLK SDODT R2826 DAA12 DAA5 DAQ5 DACLK_N SDCLK_N DAA6...
  • Page 12 HDMI SCHEMATIC DIAGRAM (DIGITAL PCB) EEP_ROM IC IC3601 S-24CS02AFJ-TB-GE JG3601 JG3602 JG3603 HDMI_P1_SEL HDMI1_SCL P5V_SW_2 Q3611 D3631 HDMI1_SDA Q3601 KRC102SRTK KRA102SRTK MA111 FROM FLASH BUFFER C3604 HDMI_SW Q3606 2SK3019_TL FROM SCALER VIDEO/AUDIO HDMI_P5V_1 C3601 P5V_SW_1 HP_RST Q3602 D3630 KRA102SRTK FROM SCALER POWER MA111 R3642 HPD_SW...
  • Page 13 JACK3 SCHEMATIC DIAGRAM (DIGITAL PCB) W843 SPDIF SPDIF_OUT FROM MICON SPDIF_OUT DB15ds CP4303 EXT_MUTE-H 1B630020 R4303 VGA-R VGA-R VGA-G TO AV SWITCH2 R4304 VGA-G VGA-B SW_L FROM/TO JACK2 SW_R R4305 DGND VGA-B AV1_Y CP4302 (CP4203) AGND AV1_C TWG-P23P-A1 LOUT_SOUND AGND LOUT_SOUND AGND ROUT_SOUND...
  • Page 14 LVDS SCHEMATIC DIAGRAM (DIGITAL PCB) SCALER IC IC2801 R8J66954BG R2830 LCD_TXOUT0- LVDS0OUT0M R2800 LCD_TXOUT0+ LVDS0OUT0P LCD_TXOUT1- B2806 LVDS0OUT1M FROM REGULATOR2 PLLAVCC_1 LCD_TXOUT1+ LVDS0OUT1P HCB1608KF-221T20 B2807 D3.3V PLLAVCC_2 LCD_TXOUT2- LVDS0OUT2M HCB1608KF-221T20 LCD_TXOUT2+ LVDS0OUT2P CRA108220JV NR2810 LCD_TXCLKOUT- PLLAVSS LVDS0CLKOUTM LCD_TXCLKOUT+ PLLAVSS LVDS0CLKOUTP LCD_TXOUT3- LVDS0OUT3M B2808...
  • Page 15 MICON SCHEMATIC DIAGRAM (DIGITAL PCB) TO REGULATOR2 1V_CTL TO JACK3 EXT_MUTE-H TO AV SWITCH2 RESET_N FROM/TO SCALER VIDEO/AUDIO BUFFER Q6201 2SK3019_TL BUFFER MCU_SCITXD Q6202 FROM WRITER MCU_SCIRXD 2SK3019_TL I2C_DATA SUB MICON CP6201 I2C_CLK A2001WV-11A FLASH_WRITE_TXD TO SURROUND MODE BUSY (MODE) AUDIO_MUTE AT+5V CNVSS...
  • Page 16 SCALER POWER SCHEMATIC DIAGRAM (DIGITAL PCB) SCALER IC IC2801 R8J66954BG TO SCALER VIDEO/AUDIO FROM REGULATOR2 AVDDA AD_A3.3V B2813 AVDDB B2810 BLM18PG121SN1D AVDDC D3.3V VCCQ33 HCB1608KF-221T20 VCCQ33 VCCQ33 Io_Power VCCQ33 VCCQ33 ADVSS ADVSS ADVSS W813 D1.0V ADVSS ADVSS W860 PLLVDD A3.3V Core_Power PLLVSS B2815...
  • Page 17 SURROUND SCHEMATIC DIAGRAM (DIGITAL PCB) TO JACK3 MUTE SW Q3411 MUTE_SW KTC3875S_Y_RTK Q3409 KRA101SRTK LOUT_SOUND R3428 FROM FLASH A_MUTE R3422 ROUT_SOUND FROM MICON MUTE SW R3427 Q3405 KTC3875S_Y_RTK R3414 MUTE SW AUDIO_MUTE Q3410 KTC3875S_Y_RTK POP_MUTE D3405 MA111 R3437 D3406 FROM REGULATOR2 MA111 C3419 AT+5V...
  • Page 18 TUNER SCHEMATIC DIAGRAM (DIGITAL PCB) TU5801 ENG36E19KF TO SCALER VIDEO/AUDIO W878 TU_CVBS C5805 50V(1608) C5801 6.3V B5802 FCM1608KF-102T02 SCALER IC IC2801 R8J66954BG FROM REGULATOR2 TUNER+30V ADIN1 D5.0V R5819 C5844 D3.3V 0.01 ADIN0 R5820 C5845 VSB_ADC ADVREF0 0.01 B IF_AGC ADVREF1 ADVREF2 NEAR IC2401 R5823...
  • Page 19 SCALER VIDEO/AUDIO SCHEMATIC DIAGRAM (DIGITAL PCB) SCALER IC2801 R8J66954BG PC_V PCVIN PC_H SSIN1 C2946 SSIN2 C2937 0.1 B SW_Y_IN VIN3A 0.1 B C2939 TU_CVBS FROM/TO JACK3 VIN1A C2938 0.1 B AV1_CVBS VIN2A PC_V 0.1 B C2940 PC_H VREFA AV3/AV4_Y C2931 AV3/AV4_Y VIN4A AV1_CVBS...
  • Page 20 AV SWITCH2 SCHEMATIC DIAGRAM (DIGITAL PCB) Lch SW IC IC6552 NJM2534V C6570 L6551 SW_L 22uH_NLCV32T BUFFER 2125 ASW0 C6567 TU_AUDIO_L R6558 R6562 AUDIO_L BAIAS 2125 3.3K 2.7K R6559 R6561 AUDIO_R D3.3V 3.3K 2.7K AUDIO_ADC IC IC6551 AK5358A C6562 R6566 Rch SW IC AINR CKS0 IC6553...
  • Page 21 REGULATOR2 SCHEMATIC DIAGRAM FROM/TO FLASH (DIGITAL PCB) D3.3V BLON TO DDR2 FROM/TO REGULATOR D1.8V CP3001 (CP401) TWG-P23P-A1 TUNER+30V TUNER+30V TO HDMI POWER_FAIL POWER_FAIL SYS_POWER_H SYS_POWER_H D3.3V AT+3.3V AT+3.3V D5.0V D5.0V AT+5V P.CON+5V AT+5V FROM/TO SCALER VIDEO/AUDIO VCC1.0V DC/DC R3016 R3018 AT+5V L3001 LCD-H...
  • Page 22 POWER SCHEMATIC DIAGRAM F401 (SMALL) 6.3A125V COIL,LINE FILTER (POWER PCB) 51MS063L 6.3A 125V R447 L402_1 D444 AT+34V R497 D415 SS11V-R22020-CH 1/4W 1F5-E 1N4005-EIC 1 1W FH401 FH402 T402 81190084 D443_1 EYF-52BCY EYF-52BCY 164.0 CP404 D432_2 FCH10A20 R436 166.0 003P-2100 L413 RL106F-E 1/2W AT+5V...
  • Page 23 POWER2 SCHEMATIC DIAGRAM (POWER PCB) CP406 A2001WR-14A +24V +24V +24V FROM POWER +24V +24V INV_SW+24V INV_GND SW+12V[UNREG] AT+5V P_GND INV_GND Analog/Dimming ON/OFF W810 PWM/Dimming N.C(open) 14PIN CD406 E82E1301 LCD+B REG BLOCK LIGHT_CTL VDIM 2A 125V LCD+B 12V SW LIGHT_POWER_H BLON Q413 SW+12V F404...
  • Page 24 REGULATOR SCHEMATIC DIAGRAM (POWER PCB) AT+5V AT+3.3V 3.27 5.37 FROM/TO POWER2 ON/OFF GND FORM/TO JACK SW+12V 5.35 R430 VDIM BLON FROM/TO JACK2 LCD+B TU+32V SW Q409 P.CON+5V STBY-H KTA1504S_Y_RTK SYS_POWER_H R502 36.4 36.4 AT+34V TUNER+30V IR_REMO AT+5V 1.5K 1/4W R496 35.8 LCD-H FROM/TO SOUND...
  • Page 25 AV SWITCH SCHEMATIC DIAGRAM (POWER PCB) FROM JACK P.CON+9V AV_SW IC IC6502 NJM2750M(TE1) AV3_PR IN1a R6510 DVI_A_IN_L SW_L ASW1 OUTa CNT1 DVI_A_IN_R AV3_Y AV3/AV4_PR IN2a AV3_PB AV3_PR ASW2 IN3a CNTT2 C6513_1 W884 AV3_PB AV3/AV4_PB DVI_A_IN_L Vref IN4a W883 R6511 AV3_Y AV3/AV4_Y SW_R FROM/TO JACK2...
  • Page 26 SOUND SCHEMATIC DIAGRAM (POWER PCB) SOUND AMP IC IC302 AN17808B ATT.CONT. ATT. RIPPLE C349_1 FILTER STAND MUTE FROM JACK2 CD301 1000 SPEAKER E8144301 SP302 CP302 20.0 19.0 C307 A2502WR-4A S0412F06 ROUT_SOUND SP OUT L W829 C341 W826 LOUT_SOUND SPEAKER SP OUT R SP301 C350_1 FILTER_MUTE...
  • Page 27 JACK SCHEMATIC DIAGRAM (POWER PCB) FROM/TO REGULATOR PC/DVI AUDIO IN J4201 R4208 C4208 (A_GND) DVI_A_IN_L MSJ-2000B_AG(O87) CVBS_IN_2 J4205 R4207 C4209 RCA-349-00C-02 DVI_A_IN_R R4239 AV2_CVBS 1/4W TO AV SWITCH C4220 R4271 C4221 R4269 DVI_A_IN_L DVI_A_IN_R AV3_Y CVBS_IN_1 AV3_PB J4206 AV3_PR RCA-349-00C-02 R4236 AV1_CVBS C4222...
  • Page 28 JACK2 SCHEMATIC DIAGRAM (POWER PCB) FROM/TO JACK3 CP4203 (CP4302) 127301123K2 LOUT_SOUND LOUT_SOUND FROM POWER2 ROUT_SOUND ROUT_SOUND P.CON+5V FILTER_MUTE FILTER_MUTE (W067) POP_MUTE POP_MUTE FROM JACK R4284 AV3/AV4_Y YUV_SW_Y 100 1/4W S1_DET AV3/AV4_PB YUV_SW_U AV2_CVBS AV1_CVBS AV3/AV4_PR AV1_Y YUV_SW_V FROM/TO OPERATION/REMOCON AV1_C D4214 IR_REMO SW_R...
  • Page 29 OPERATION/REMOCON SCHEMATIC DIAGRAM (REMOCON PCB) FROM/TO JACK2 OS2201 CP2201 (CP4201) ROM-S038TAO A2001WR2-5P Vout REMOCON IN R2208 AT+5V 1/4W STANDBY LED POWER ON LED OS 26 CD2201 E8253101 STANDBY/POWER D2201 LTL-1BEFJ-002A PCBDA0 CEG359 (OPERATION PCB) R2207_2 TO MICON R2203_2 R2206_2 CP2203_1 (CP6202) A2001WR2-3P 1.2K...
  • Page 30 INTERCONNECTION DIAGRAM OS 32 CP2203_1 CP6202 CD2201_1 OPERATION PCB PCB270 KEY_B KEY B CEG358 KEY_A KEY A CP401 CP3001 AC120V_60Hz. TUNER+30V TUNER+30V CD3805 J401 POWER PCB BLACK PCB240 POWER_FAIL POWER_FAIL BLACK CEG353 SYS_POWER_H SYS_POWER_H WHITE WHITE AT+3.3V AT+3.3V P.CON+5V P.CON+5V AT+5V AT+5V CP2803...

  • Page 31: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW 104C 202 104C 202 104C 104A 104C 104C 103A 104B 103A 104C 103C 102B 103B 102D 102D 102C 102A PCB240 (POWER PCB ASS'Y) PCBDH0 (DIGITAL PCB ASS'Y) 106B 106A 101E 101E 101F 101E 101C 101F 101E 101F PCBDA0 101D 101E...
  • Page 32 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) CD3805 HOLDER CORD POLYBAG INSTRUCTION(RED CAUTION) INSTRUCTION BOOK(E/F/S) TM101 REGISTRATION CARD INFORMATION SHEET (FCC) PACKAGE TOP PACKAGE STAND-TOP PACKAGE STAND-BOTTOM SCREWS LAMIFILM BAG GIFT BOX SHEET BARCODE SHEET BARCODE SHEET BARCODE PACKAGE BOTTOM...
  • Page 33 MECHANICAL EXPLODED VIEW (PACKING DIAGRAM) PACKAGE STAND-TOP FILM BAG (791WHA0159) FILM BAG (791WHA0160) SCREWS PACKAGE STAND-BOTTOM...

  • Page 34: Mechanical Replacement Parts List

    761WPA0477 COVER HINGE 800WR0A036 SHEET SILICONE 761WSA0466 ANGLE HINGE 761WSA0480 ANGLE MAIN 761WSBA016 PLATE JACK 800WR00084 DAMPER SPEAKER 722000A666 SHEET SERIAL 723000D739 MERCURY CAUTION LABEL (SHARP) 723527A136 SHEET RATING 723000D814 SHEET JACK 723000D799 POP LABEL 800WQ00127 FELT SHEET 800WQ00134 FELT SHEET 40x60xT0.5...

  • Page 35: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST REF. NO. PART NO. DESCRIPTION REMOCON PCB ASS'Y *** PCB *** PCBDA0 A36T01ADA0 REMOCON PCB ASS'Y CEG359A *** DIODES *** D2201 0021E9Q010 LED LTL-1BEFJ-002A *** CONNECTORS *** CP2201 069S250639 CONNECTOR PCB SIDE A2001WR2-5P *** OTHERS *** OS2201 077A038005 REMOTE RECEIVER ROM-S038TAO...
  • Page 36 ELECTRICAL REPLACEMENT PARTS LIST Q3405 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q3408 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q3409 TPAAA05001 COMPOUND TRANSISTOR KRA101SRTK Q3410 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q3411 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q3412 TCAA3875SY TRANSISTOR SILICON KTC3875S_Y_RTK Q3601 TPAAB05001 COMPOUND TRANSISTOR KRA102SRTK Q3602 TPAAB05001 COMPOUND TRANSISTOR KRA102SRTK Q3603...
  • Page 37 ELECTRICAL REPLACEMENT PARTS LIST L3603 02D1000119 COIL CHOKE EXC28CG900U L3604 02D1000119 COIL CHOKE EXC28CG900U L4301 0216S8220K COIL L5801 0216SD220J COIL L5805 021AS9224J COIL 0.22 UH L6551 0216S8220K COIL *** JACKS *** J4301 060K411055 RCA JACK AV3-13P2-60S1 *** CONNECTORS *** CP2802 069EVUT070 CONNECTOR PCB SIDE 04_6232_130_103_800+ CP3001...
  • Page 38 ELECTRICAL REPLACEMENT PARTS LIST ! R437 R002T42R2J RC 2.2 OHM 1/4W ! R445 R002T4101J RC 100 OHM 1/4W ! R447 R65584150J R,FUSE OHM 1/4W ! R473 R3K78A102J R,METAL OXIDE OHM 2W ! R481 R3K78A102J R,METAL OXIDE OHM 2W ! R494 R803R9102J RC OHM 1/16W ! R497...
  • Page 39 ELECTRICAL REPLACEMENT PARTS LIST D4214 D1VT001330 DIODE,SILICON 1SS133T-77 *** ICS *** ! IC302 I0FSP7808B SOUND AMP STEREO AN17808B IC401 I2GT050380 VDS=500V RDS1=0.77 RDS2=0.38 MP3A5038 ! IC402 I5SD0P2F40 VD=700V RDS(ON)=9.5OHM MIP2F4 ! IC403 I1KJ9A431A VARIABLE SHUNT REGULATOR TAPE KIA431A-AT ! IC404 I1KJ9A431A VARIABLE SHUNT REGULATOR TAPE KIA431A-AT...
  • Page 40 ELECTRICAL REPLACEMENT PARTS LIST *** CONNECTORS *** CP401 06977NM020 CONNECTOR PCB SIDE 127301123K2 CP404 069D01001A CONNECTOR PCB SIDE 003P-2100 CP4201 069S250639 CONNECTOR PCB SIDE A2001WR2-5P CP4203 06977NM020 CONNECTOR PCB SIDE 127301123K2 *** FUSES *** ! F401 081PC6R305 FUSE 51MS063L ! F404 0835C02003 MICRO FUSE 20N_2000FS FH401...
  • Page 41 ELECTRICAL REPLACEMENT PARTS LIST RESISTOR RC………………CARBON RESISTOR CAPACITORS CC………………CERAMIC CAPACITOR CE………………ALUMI ELECTROLYTIC CAPACITOR CP………………POLYESTER CAPACITOR CPP……………… POLYPROPYLENE CAPACITOR CPL……………… PLASTIC CAPACITOR CMP…………… METAL POLYESTER CAPACITOR CMPL…………… METAL PLASTIC CAPACITOR CMPP…………… METAL POLYPROPYLENE CAPACITOR K2-7...
  • Page 42 No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher. SHARP ELECTRONICS CORPORATION Sharp Plaza. Mahwah, New Jersey 07430-2135...