Sharp LC-19SK24U Service Manual
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Sharp LC-19SK24U Service Manual

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In the interests of user-safety (Required by safety regulations in some countries) the set should be re-
stored to its original condition and only parts identical to those specified should be used.
ﾈ IMPORTANT SERVICE SAFETY PRECAUTION ..........................................................................................2
ﾈ SPECIFICATIONS .........................................................................................................................................5
ﾈ OPERATION MANUAL ..................................................................................................................................7
ﾈ DIMENSIONS ..............................................................................................................................................11
ﾈ REMOVING OF MAJOR PARTS .................................................................................................................13
ﾈ ADJUSTING PROCEDURE OF EACH SECTION ......................................................................................18
ﾈ PUBLIC MODE SETTING PROCEDURE ...................................................................................................43
ﾈ TROUBLESHOOTING TABLE .....................................................................................................................48
ﾈ MAJOR IC INFORMATIONS .......................................................................................................................56
ﾈ BLOCK DIAGRAM .......................................................................................................................................58
ﾈ OVERALL WIRING DIAGRAM ....................................................................................................................60
ﾈ DESCRIPTION OF SCHEMATIC DIAGRAM ..............................................................................................62
RC/LED Unit ..............................................................................................................................................63
MAIN Unit ..................................................................................................................................................64
SUB Unit ....................................................................................................................................................82
POWER_INVERTER Unit ..........................................................................................................................86
KEY Unit ....................................................................................................................................................88
ﾈ PRINTED WIRING BOARD ASSEMBLIES .................................................................................................89
ﾈ REPLACEMENT PARTS LIST ...................................................................................................................109
ﾈ PACKING OF THE SET .............................................................................................................................126
19K24U P1-17.indd
1
LCD COLOR TELEVISION
LC-19SK24U
LC-19SK24U-W
LC-19SB24U
LC-19SB24U-W
LC-19SB14U
LC-19D44U
MODEL
CONTENTS
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
N87B1LC19K24U
Page
2007-9-4
10:06:54

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Summary of Contents for Sharp LC-19SK24U

  • Page 1: Table Of Contents

    N87B1LC19K24U LCD COLOR TELEVISION LC-19SK24U LC-19SK24U-W LC-19SB24U LC-19SB24U-W LC-19SB14U LC-19D44U MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identical to those specified should be used.

  • Page 2: ﾈ Important Service Safety Precaution

    LC-19SK4U/U-W LC-19SB4U/U-W LC-19SB14U LC-19D44U IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thor- oughly familiar with all safety checks and the servicing guidelines which follow: WARNING earth ground, such as electrical conduit or electrical ground connected to an earth ground.
  • Page 3 LC-19SK4U/U-W LC-19SB4U/U-W LC-19SB14U LC-19D44U PRECAUTIONS A PRENDRE LORS DE LA REPARATION La réparation ne peut être effectuée que par un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT condensateur de 0.15µF en série avec toutes les pièces métalliques exposées du coffret et une terre 1.
  • Page 4 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Precautions for using lead-free solder 1 Employing lead-free solder "All 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.

  • Page 5: ﾈ Specifications

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U SpeCifiCationS Item Model: LC-19SK24U/LC-19SK24U-W/LC-19SB24U/LC-19SB24U-W/LC-19SB14U LCD panel 18.5 o Active Matrix type a-Si TN LCD ( Screen size 18 o measured diagonally) 3,147,264 dots (1366 g 768 g 3 dots) Number of dots TV-standard (CCIR) American TV Standard ATSC/NTSC System Function Receiving VHF/UHF VHF 2-13ch, UHF 14-69ch Channel CATV(analog) 1-125ch (STD, HRC, IRC) Digital Terrestrial 2-69ch Broadcast (8VSB) Digital Cable 1-135ch (64/256 QAM) Audio multiplex BTSC System Audio out 2W g 2...
  • Page 6 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U SpeCifiCationS(Continued) Item Model: LC-19D44U LCD panel 18.5 o Active Matrix type a-Si TN LCD ( Screen size 18 o measured diagonally) 3,147,264 dots (1366 g 768 g 3 dots) Number of dots TV-standard (CCIR) American TV Standard ATSC/NTSC System Function Receiving VHF/UHF VHF 2-13ch, UHF 14-69ch Channel CATV(analog) 1-125ch (STD, HRC, IRC) Digital Terrestrial 2-69ch Broadcast (8VSB) Digital Cable 1-135ch (64/256 QAM) Audio multiplex BTSC System Audio out 2W g 2...

  • Page 7: ﾈ Operation Manual

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U OPERATION MANUAL Part names TV (Front) Remote control sensor OPC indicator OPC sensor* POWER indicator *OPC: Optical Picture Control TV (Side/Rear) AC INPUT terminal INPUT 4 terminals (PC IN) INPUT 3 terminals (HDMI) HEADPHONE terminal POWER DIGITAL AUDIO OUTPUT button terminal MENU button INPUT 1 terminals INPUT INPUT 2 terminals button Antenna/Cable in Channel buttons (CH r / s ) Regarding the headphone jack • Use headphones with a stereo mini plug (Ø 3.5 mm).
  • Page 8 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Part names 1 POWER: Switch the TV power on or enters standby. Remote control unit 2 DISPLAY: Display the channel information. 3 CC: Display captions from a closed-caption source. 4 0 – 9: Set the channel. 5 • (DOT) 6 FLASHBACK: Return to the previous channel or external input mode. 7 VIEW MODE: Select the screen size. 8 FREEZE: Set the still image. Press again to return to normal screen. 9 a / b / c / d /ENTER: Select a desired item on the screen.
  • Page 9 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Part names Kitchen Remote control unit (LC-19SK24U/LC-19SK24U-W/LC-19D44U) 1 KITCHEN TIMER/CLOCK SET/ALARM: Set the kitchen timer, clock or alarm. 2 MIN/HOUR : Set the minute of kitchen timer and the hour of clolck or alarm. 3 SEC/MIN : Set the second of kitchen timer and the minute of clock or alarm. 4 SET/STOP : Confirm setting or stop beeper sound. 5 LIGHT : Light on the remote control LCD backlight. 6,7 CHr/CHs : Select the channel. 8 VOL+ : To increase the volume. 9 VOL- : To decrease the volume.
  • Page 10 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Basic adjustment settings Menu items for TV/INPUT 1/2 Menu items for HDMI/PC-IN Backlight Backlight Contrast Contrast Brightness Brightness Color Advanced Tint C.M.S Sharpness Color Temp. Advanced Monochrome C.M.S Reset Color Temp. Film Mode 3D-Y/C Monochrome I/P Setting...

  • Page 11: ﾈ Dimensions

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U DIMENSIONS LC-19SK24U/LC-19SK24U-W/LC-19SB24U/LC-19SB24U-W/LC-19SB14U Unit: inch (mm) 10 (254) (75) 61 /64 (462) 3 /16 (49) 59 /64 (411.8) 7 /32 (203) 63 /64 (100) 15 /16 19K24U P1-17.indd 2007-8-15 15:29:42...
  • Page 12 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U DIMENSIONS LC-19D44U Unit: inch (mm) 10 (254) (72) (92) 53 /64 5 /8 (462) 3 /16 (52) 3 /64 (411.8) 7 /32 (77) 1 /32 (203) 63 /64 (100) 15 /16 19K24U P1-17.indd 2007-8-15 15:29:43...

  • Page 13: ﾈ Removing Of Major Parts

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U REMOVING OF MAJOR PARTS (LC-19SK24U/LC-19SK24U-W) 1. Remove the Stand HINGI Cover fixing screw (1 pc.). 2. Remove the stand fixing screws (4 pcs.). 3. Remove the cabinet B fixing screws (10 pcs.). 4. Remove the cabinet B after opening from the direction of an arrow. 5. Disconnect all the connectors from all the PWBs. Cabinet B Cabinet A Stand HINJI Cover Stand Main PWB Inverter PWB BTN PWB LED PWB Sub PWB 19K24U P1-17.indd 2007-9-13 10:25:45...
  • Page 14 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U (LC-19D44U) 1. Remove the Stand HINGI Cover fixing screw (1 pc.) and the handle fixing screws (4 pcs). 2. Remove the stand fixing screws (4 pcs.). 3. Remove the cabinet B fixing screws (10 pcs.). 4. Remove the cabinet B after opening from the direction of an arrow. 5. Disconnect all the connectors from all the PWBs. Cabinet B Cabinet A Stand HINJI Cover Stand Inverter PWB Main PWB BTN PWB LED PWB Sub PWB 19K24U P1-17.indd 2007-9-13 10:25:48...
  • Page 15 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U (LC-19SB24U/LC-19SB24U-W/LC-19SB14U) 1. Remove the Stand HINGI Cover fixing screw (1 pc.). 2. Remove the stand fixing screws (4 pcs.). 3. Remove the cabinet B fixing screws (10 pcs.). 4. Remove the cabinet B after opening from the direction of an arrow. 5. Disconnect all the connectors from all the PWBs. Cabinet B Cabinet A Stand HINJI Cover Stand Main PWB Inverter PWB BTN PWB LED PWB Sub PWB 19K24U P1-17.indd 2007-9-13 10:25:50...
  • Page 16 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 6. Remove the vesa angle fixing screws (4 pcs.). 7. Remove the 3 lock screws from Main Shield. 8. Remove the 9 lock screws from the sub PWB and main PWB and power PWB and AC angle. Detach the sub PWB and main PWB and power PWB from LCD assembly. 9. Remove the 3 lock screws from the control button assembly and the source PWB Shield. 10. Remove the LED PWB fixing screws (1 pcs.). 11. Remove the 2 lock screws each from the right and left speakers ass’y and take out both the speakers ass’y. 12. Remove the 4 lock screws each from the right and left speaker angle. Main PWB Power PWB Sub PWB LED PWB Speaker (L) Speaker (R) LED PWB Speaker Angle (L) Speaker Angle (R) 19K24U P1-17.indd...
  • Page 17 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U ﾈ Precautions in servicing the side-B (backside) of the main PWB unit 1. Remove the lock screws (2 pcs.) from the main PWB, detach the PWB from the set, and then turn it over. 2. Connect the service-specific extension cable (QCNW-E542WJZZ) between the main PWB (SC1201) and the sub PWB (P501). 3. Connect the service-specific extension cable (QCNW-E542WJZZ) between the main PWB (SC1202) and the sub PWB (P502).

  • Page 18: ﾈ Adjusting Procedure Of Each Section

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U ADJUSTING PROCEDURE OF EACH SECTION The adjustment values are set to the optimum conditions at the factory before shipping .If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.
  • Page 19 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19K24U P18-57.indd 2007-8-15 15:30:33...
  • Page 20 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 2. Upgrading of each microprocessor software 2.1 Sub microprocessor software version upgrade 1). Install “E8 Emulator Debugger” in CD-ROM. 2). access http://www.renesas.com/fmwk.jsp?cnt=/download_search_results.jsp&fp=/support/downloads/ download_results&layerId=1612 to download following two update packages: 1 E8 Emulator Software V.2.09 Release 02 for M16C, H8 Upgrade (Debugger package version) Issue date:2007-2-22 48.3M...
  • Page 21 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 7). Then enter “Emulator settings”, the Device is R5F212B8, mode is “program flash”. please choose “Power Target from E8(MAX 300mA)” and select 3.3V, and choose OK. 8). connecting start, after connected it will enquire a ID CODE, input all zero (0000000000000000). 19K24U P18-57.indd 2007-8-21 13:25:52...
  • Page 22 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 9). Next display 10). enter menu ”debug”->”debug settings…” -> “add” to add firmware file (Mot file). 19K24U P18-57.indd 2007-8-15 15:30:36...
  • Page 23 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U After it you can see firmware in “Download modules”. 11). Enter menu ”Debug”->”DOWNLOAD modules” and select the firmware. 19K24U P18-57.indd 2007-8-15 15:30:37...
  • Page 24 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 12). After updating Then shut down “High Performance Embeded Workshop”, unplug 20PIN connector, and E8 firmware updating finish. 2.2 Main microprocessor software version upgrade 2.2.1 Please find the folder named PD308 on the SM Server: Ftp://172.30.48.21/NSEC_Design/LC-19D44U/Service_Manual 19K24U P18-57.indd 2007-8-21 13:26:29...
  • Page 25 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 2.2.2 Install software: \PD308\PD308SDI_ 暂定版 \DISK1\setup.exe After installation, connect writer to PC, the drivers at C: \Renesas\PD308SDI\DRIVERS\ (default install path) 2.2.2.1 MCU settings/Download Behavior settings MCU FILE at PD308\MCUFiles\66608.mcu 19K24U P18-57.indd 2007-8-15 15:30:38...
  • Page 26 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 2.2.2.2 Target Dependence Memory setting → Add Type=Read/Write, Size=ALL, TOP=0, Bottom=DFFF Type=Read/Write, Size=Word/Lword, TOP=8000000, - - Bottom=9FFFFF → Add 2.2.2.3 Make the FTD file(FLASH Memory) Need two files: PD308\FDDFiles\DVP-M2_FTD_061221.scr PD308\FDDFiles\S29AL008B_M32C.FDD Type = Flash ROM ->Create Device File: Refer-> S29AL008B_M32C.FDD ROM Activate Script File: Refer->...
  • Page 27 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U And other settings as follow OK and save as M2_1M.ftd file 19K24U P18-57.indd 2007-8-21 13:27:14...
  • Page 28 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 2.2.2.4 “Add” Flash ROM Setting finish. 2.2.2.5 Update firmware: 1. Connect M2 writer to LCD’s 20PIN port which near INPUT4 terminal, use convertor1 2. Plug AC cord, make sure power indicator on. 3. Run PD308SDI in start menu.
  • Page 29 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 4. If the connection correct, it will display as below: 5. Enter menu “file”->“download”> “rom data”, and select firmware(MOT file). 19K24U P18-57.indd 2007-8-21 13:29:40...
  • Page 30 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 6. Wait about 30 seconds, it up to 100% 7. Shut down PD308SDI. 8. Unplug AC cord and 20Pin connector. 3. MPEG2 module software version upgrade Install soft in CD-ROM : WATCHPOINT-EJW\Disk1\SETUP.EXE USB Driver: CD-ROM folder “USB Driver”.
  • Page 31 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 3.1. Supply AC power to writer and connect it to PC, connect writer to sub pwb by convertor 2 3.2. Run “EJ-Writer DTV” in start menu. 1. Select DTV_sx_v2.dbg in default install path. 2. AC in and power on, press “Enter”. 19K24U P18-57.indd 2007-8-21 15:42:59...
  • Page 32 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 3. Press CMD and select “BATCH”. 19K24U P18-57.indd 2007-8-21 15:43:00...
  • Page 33 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 4.press the green character, and press enter 19K24U P18-57.indd 2007-8-21 15:43:01...
  • Page 34 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 5. select “Resource” ->“Flash Memory”->“Device Setup” in menu. The detail setting as follow: Detail setting please refer to “EJ-Writer setting. pdf” in ftp://172.30.48.21/NSEC_Design/LC-19D44U/ Service_Manual/ 19K24U P18-57.indd 2007-8-21 15:43:01...
  • Page 35 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 6. Then press the Start, and begin chip erase 19K24U P18-57.indd 2007-8-21 15:43:01...
  • Page 36 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 7. After erase the display as follow: 8. Press MEM, and press to check the DUMP, all of them are “FF” 19K24U P18-57.indd 2007-8-21 15:43:02...
  • Page 37 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 9. Select “Resource”->“Download”, and “Add” mot file: 0. Press Download, begin writer data 19K24U P18-57.indd 2007-8-21 15:43:02...
  • Page 38 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U q. Waiting about 4 minutes, it’s up to 100%, writing finish. check the memory dump again, the data appeared w. Close WATCHPOINT, and save the project file e. unplug the AC cord and connector. 19K24U P18-57.indd 2007-8-21 15:43:03...
  • Page 39 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 4. Adjustment procedure 4.1 Plug the AC power cord directly into a wall outlet. 4.2 Calling the adjustment process mode There are two ways to call this mode. ∗ Turn on the power and press the “ADJUST PROCESS” key on the remote controller.
  • Page 40 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Signal: color BAR (SATURATION 75%) Setting: 28: XGA H: 48.36KHz V: 60Hz SYNC: OFF Note: Please use the color Bar of SATURATION 2 Adjusting AUTO GAIN-OFFSET in page 5 of DVP(M2-PC)to RUN . When “AUTO GAIN-OFFSET OK” appears , this adjustment is complete NOTE: If want to set all item to ON,please set to RUN in ADJUST PROCESS.
  • Page 41 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 4.5.3 Common bias Adjustment 1 Feed in built-in signal (See follow picture) 2 Adjust the “COM BIAS” setting so that the peak-to-peak of the wave be minimized. 19K24U P18-57.indd 2007-8-15 15:30:50...
  • Page 42 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 4.5.4 White balance adjustment Adjustment item Adjustment conditions Adjustment procedure Setting Backlight: +16 For detailed adjustment procedure refer to "Kameyama Model Integral WB Adjustment (MAX) Specifications". 1) Make the following settings for the set. AV MODE: [DYNAMIC] Backlight: +16 Aging time: Min.

  • Page 43: ﾈ Public Mode Setting Procedure

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U PUBLIC MODE SETTING PROCEDURE 1. How to start Public Mode • There are the following two ways to get the public mode setup screen displayed. 1 In the adjustment process mode, turn on "HOTEL MODE". Also press the "CH ( )"...
  • Page 44 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 2. How to exit Public Mode There are the following ways to quit the public mode setup screen. • Turn off "HOTEL MODE" in the adjustment process mode. (✩) ← This way alone is not for quitting the setup screen, but for quitting the mode itself.
  • Page 45 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 5. On Setting Items * "EZ-SETUP" discussed below indicates "EZ-SETUP after the first power-on". (1) POWER ON FIXED Selection " " " " Selection between Variable Fixed (loop provided) Default Variable Explanation " " Fixed setting, the power-off by the power key of the unit is invalidated and the image is kept being re- ceived.
  • Page 46 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U (5) R/C BUTTON Selection Selection between " Respond " " No respond " (loop provide) Default Respond Explanation Keys acceptable by remote control are limited or reception of keys can be prohibited. Limit in Setting "...
  • Page 47 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U (9) BLUE SCREEN Selection " " " " Selection between (loop provide) Default Explanation In "Yes" setting, when don't receive any signal or no signal input, the screen is blue. Limit in Setting None Exception None...

  • Page 48: ﾈ Troubleshooting Table

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE No power supply (Front LED does not light up) and no power-up even is turned on (Front LED light up to blue) Is the AC cord connected? Connect the AC cord and turn on the power.
  • Page 49 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) No audio output during UHF/VHF reception Check the tuner and peripheral circuits. Is SIF output from the tuner (TU1101_Pin15) normal? Check the filter circuits (Q1104-5) and peripheral Is input signal fed to pinA21 of IC801?
  • Page 50 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) No audio output from external input <<INPUT-1>> Is L-ch audio signal fed from input terminal J501 to pin 8 of IC503? Is R-ch audio signal fed from input terminal J501 to pin 10 of IC503? <<INPUT-2>>...
  • Page 51 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) <Component video signal input> No video output (INPUT-1) No video output from extermal input <<INPUT-1>> Select INPUT-1 and the input signal on the input switching menu screen. Check between J501 and pins 16,11 and 8 of IC502.
  • Page 52 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) <Composite video signal/S-video signal input> No video output (INPUT2) Select INPUT-2 and the input signal on the input switching No video output from extermal input <<INPUT-2>> menu screen. <Composite video signal input> Check between J503 and pin 1 of IC503.
  • Page 53 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) No video output during ANALOG broadcasting reception Is video signal sent to output terminal pin 13 of tuner Check or replace the tuner's peripheral circuits. (TU1101)? Is video signal out from pin 35 of IC503? Check IC503 and peripheral circuits.
  • Page 54 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) No video output from HDMI input (INPUT3) Are signals fed from HDMI (SC402) connector to input Is IC403(E PROM) accessed with 12C when connectiong terminals RRX0± (pins 16 and 17),RRX1(pins 19 and HDMI device and is DDC_12C_CLOCK/DATA data read...
  • Page 55 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U TROUBLESHOOTING TABLE (Continued) No video output from PC input (INPUT4) Are signal fed from pins 1,2,3(Analog-R/G/B),and 13,14(H Sync/V Sync) of input terminal (SC401) to pins T1,V1,M1,AA1,Y1 of IC801 (M2)? Check peripheral circuits of IC801 and Q801,Q803,Q805.

  • Page 56: ﾈ Major Ic Informations

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U MAJOR IC INFORMATIONS IC801 (RH-IXB882WJZZQ) This is a multi-format LSI with following funtion: SDTV/HDTV/PC signal input , 10bit A/D processor, NTSC/PAL/SECAM demodulator, VBI decoder, output for VGA~WXGA panel, LVDS interface, with 64M SDROM and 512K FLASH ROM 19K24U P18-57.indd...
  • Page 57 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U —— M E M O —— —— M E M O —— 19K24U P18-57.indd 2007-8-15 15:30:55...

  • Page 58: ﾈ Block Diagram

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U BLOCK DIAGRAM 19SK24U P58-88.indd 2007-8-15 15:31:29...
  • Page 59 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:31:34...

  • Page 60: ﾈ Overall Wiring Diagram

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U OVERALL WIRING DIAGRAM 19SK24U P58-88.indd 2007-8-15 15:31:42...
  • Page 61 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:31:48...

  • Page 62: ﾈ Description Of Schematic Diagram

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. The voltages at test points are measured on the stable supply voltage of AC 120V. Signals are fed by a color bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

  • Page 63: ﾈ Schematic Diagram

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U SCHEMATIC DIAGRAM  R/C LED Unit 19SK24U P58-88.indd 2007-8-15 15:31:53...

  • Page 64: Main Unit

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 1/9 19SK24U P58-88.indd 2007-8-15 15:32:06...
  • Page 65 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:32:19...
  • Page 66 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 2/9 19SK24U P58-88.indd 2007-8-15 15:32:28...
  • Page 67 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:32:32...
  • Page 68 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 3/9 19SK24U P58-88.indd 2007-8-15 15:32:38...
  • Page 69 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:32:44...
  • Page 70 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 4/9 19SK24U P58-88.indd 2007-8-15 15:32:50...
  • Page 71 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:32:55...
  • Page 72 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 5/9 19SK24U P58-88.indd 2007-8-15 15:33:00...
  • Page 73 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:02...
  • Page 74 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 6/9 19SK24U P58-88.indd 2007-8-15 15:33:07...
  • Page 75 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:10...
  • Page 76 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 7/9 19SK24U P58-88.indd 2007-8-15 15:33:13...
  • Page 77 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:14...
  • Page 78 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 8/9 19SK24U P58-88.indd 2007-8-15 15:33:19...
  • Page 79 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:24...
  • Page 80 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  MAIN Unit - 9/9 19SK24U P58-88.indd 2007-8-15 15:33:29...
  • Page 81 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:33...

  • Page 82: Sub Unit

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  SUB Unit - 1/2 19SK24U P58-88.indd 2007-8-15 15:33:37...
  • Page 83 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:41...
  • Page 84 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  SUB Unit - 2/2 19SK24U P58-88.indd 2007-8-15 15:33:47...
  • Page 85 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:33:53...

  • Page 86: Power_Inverter Unit

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  POWER_INVERTER Unit 19SK24U P58-88.indd 2007-8-15 15:34:00...
  • Page 87 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P58-88.indd 2007-8-15 15:34:06...

  • Page 88: Key Unit

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U  KEY Unit 19SK24U P58-88.indd 2007-8-15 15:34:10...

  • Page 89: ﾈ Printed Wiring Board Assemblies

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U PRINTED WIRING BOARD ASSEMBLIES SW Unit (Side-A) SW Unit (Chip Part Side-A) SW Unit (Side-B) SW Unit (Chip PartSide-B) 19SK24U P89-108.indd 2007-9-3 16:04:23...
  • Page 90 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U MAIN Unit (Side-A) 19SK24U P89-108.indd 2007-8-15 15:43:13...
  • Page 91 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-8-15 15:43:21...
  • Page 92 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U MAIN Unit (Chip Parts Side-A) 19SK24U P89-108.indd 2007-8-15 15:43:29...
  • Page 93 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-8-15 15:43:34...
  • Page 94 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U MAIN Unit (Side-B) 19SK24U P89-108.indd 2007-8-15 15:43:44...
  • Page 95 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-8-15 15:43:53...
  • Page 96 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U MAIN Unit (Chip Parts Side-B) 19SK24U P89-108.indd 2007-9-3 16:05:41...
  • Page 97 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-9-3 16:05:45...
  • Page 98 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U SUB Unit (Side-A) 19SK24U P89-108.indd 2007-8-15 15:44:10...
  • Page 99 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-8-15 15:44:11...
  • Page 100 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U SUB Unit (Side-B) 19SK24U P89-108.indd 2007-8-15 15:44:17...
  • Page 101 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-8-15 15:44:23...
  • Page 102 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U SUB Unit (Chip Part Side-B) 19SK24U P89-108.indd 2007-9-3 16:06:23...
  • Page 103 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-9-3 16:06:26...
  • Page 104 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U POWER Unit (Side-A) 19SK24U P89-108.indd 2007-9-13 13:41:03...
  • Page 105 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-9-13 13:41:06...
  • Page 106 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U POWER Unit (Side-B) 19SK24U P89-108.indd 2007-8-15 15:44:43...
  • Page 107 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U 19SK24U P89-108.indd 2007-8-15 15:44:48...
  • Page 108 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U LED Unit (Side-A) LED Unit (Chip Part Side-A) LED Unit (Side-B) LED Unit (Chip PartSide-B) 19SK24U P89-108.indd 2007-9-3 16:06:50...

  • Page 109: ﾈ Replacement Parts List

    2. NO. DE REF 3. NO. DE PIECE 4. DESCRIPTION in USA: Contact your nearest SHARP Parts Distributor to order. For location of SHARP Parts Distributor, Please call Toll- in CANADA: Contact SHARP Electronics of Canada Limited Phone Free; 1-800-BE-SHARP (416) 890-2100 Note:...
  • Page 110 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ DUNTKE333FM01 RJ12 VRS-TQ2BD000JY J 0 1/8W Metal Oxide POWER INVERTER UNIT (Continued) RJ13 VRS-TQ2BD000JY J 0 1/8W Metal Oxide RJ14 VRS-TQ2BD000JY J 0 1/8W Metal Oxide...
  • Page 111 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ Q704 VSRT1N141U/-1Y J RT1N144U DUNTKE333FM01 Q705 VS2SC5383F/-1Y J 2SC5383F POWER INVERTER UNIT (Continued) Q706 VS2SA1037KQ-1Y J 2SA1037K Q801 VS2SC3928AR-1Y J 2SC3928AR Q802...
  • Page 112 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ C810 VCKYCZ1AB104KY J 0.10 10V Ceramic DUNTKE367FM01 C811 VCCCCZ1HH101JY J 100p 50V Ceramic MAIN UNIT (Continued) C812 RC-KZA195WJZZY J 10µF 10V Ceramic C813 VCKYCZ1AB104KY J 0.10 10V Ceramic...
  • Page 113 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ RESISTORS DUNTKE367FM01 R301 VRS-CH1JF101JY J 100 1/16W Metal Oxide AA MAIN UNIT (Continued) R302 VRS-CJ1JF470JY J 47 1/16W Metal Oxide R303 VRS-CZ1JF220JY...
  • Page 114 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ R907 VRS-CZ1JF103JY J 10k 1/16W Metal Oxide AA DUNTKE367FM01 R908 VRS-CZ1JF152JY J 1.5k 1/16W Metal Oxide AA MAIN UNIT (Continued) R909 VRS-CJ1JF220JY...
  • Page 115 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ FB8703 RBLN-0067TAZZY J Ferrite Bead DUNTKE367FM01 FB9201 RBLN-0006TAZZY J Ferrite Bead MAIN UNIT (Continued) FB9202 RBLN-0006TAZZY J Ferrite Bead FB9203 RBLN-0006TAZZY J Ferrite Bead...
  • Page 116 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ VRS-CY1JF000JY J 0 1/16W Metal Oxide DUNTKE241FM01 VRS-CY1JF000JY J 0 1/16W Metal Oxide SUB UNIT (Continued) R501 VRS-CY1JF102JY J 1k 1/16W Metal Oxide...
  • Page 117 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ D155 RH-EX0269TAZZY J Zener Diode, 15V DUNTKE241FM01 SUB UNIT (Continued) RESISTORS R151 VRS-CY1JF822JY J 8.2k 1/16W Metal Oxide AA R152 VRS-CY1JF123JY J 12k 1/16W Metal Oxide AA...
  • Page 118 XBBS940P08000 J Screw, x1(LC-19SK24U) (LC-19SK24U-W) XBBSN40P08000 J Screw, x1(LC-19SK24U-W) AB 1-1 Not Available - Cabinet A − XBBS940P10000 J Screw, x4 1-2 GCOVAC325WJ2A J SP Cover (LC-19SK24U) AQ XBPS830P06000 J Screw, x1(LC-19SK24U) 1-2 GCOVAC325WJ2B J SP Cover (LC-19SK24U-W) AQ XBPS730P06000 J Screw, x1(LC-19SK24U-W) AA 1-3 HDECQA765WJ2A J Led R/C Cover XEBS930P12000 J Screw, x3 1-4 PSPAHB215WJ00...
  • Page 119 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U CABINET AND MECHANICAL PARTS (LC-19SK24U/LC-19SK24U-W) BTN PWB 1-11 1-13 1-12 1-15 1-10 1-11 1-12 LED PWB 1-10 1-18 19” LCD Panel Unit Ass’y MAIN PWB POWER PWB SUB PWB LC-19SB14U P109-end.indd 2007-10-6 14:48:45...
  • Page 120 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ (LC-19SB24U-W) CABINET AND MECHANICAL PARTS JBTN-A675WJ2A J Control Button (LC-19SB24U/19SB14U) JBTN-A675WJ2B J Control Button LC-19SB24U/LC19SB24U-W/LC-19SB14U (LC-19SB24U-W) CCABAB811WJ01 J Cabinet A Ass'y (LC-19SB24U) BD LHLDW1173CEZZ J Lamp, x3 CCABAB811WJ02 J Cabinet A Ass'y LHLDWA092WJZZ J Wire Holder, x4 (LC-19SB24U-W) LX-BZA202WJF7...
  • Page 121 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U CABINET AND MECHANICAL PARTS (LC-19SB24U/LC-19SB24U-W/LC-19SB14U) BTN PWB 1-11 1-13 1-12 1-15 1-10 1-11 1-12 LED PWB 1-10 1-18 19” LCD Panel Unit Ass’y MAIN PWB POWER PWB SUB PWB LC-19SB14U P109-end.indd 2007-10-6 14:48:46...
  • Page 122 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U Ref. No. Part No. Description Code Ref. No. Part No. Description Code ★ ★ MAIN-R/C LED CABINET AND MECHANICAL PARTS QCNW-G523WJQZ J Connecting Cord, MAIN-SW AH QPWBM0242TPZZ J Connecting Cord, FPC Main PWB-LCD LC-19D44U LANGTA469WJFW J AC Inlet Angle CCABAB908WJ01 J Cabinet A Ass'y LX-BZA198WJF7 J Screw, x3 1-1 Not Available - Cabinet A − JHNDPA025WJ2A...
  • Page 123 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U CABINET AND MECHANICAL PARTS (LC-19D44U) 1-11 BTN PWB 1-12 1-10 1-11 1-15 1-12 1-11 1-10 LED PWB 1-18 1-19 19” LCD Panel Unit Ass’y MAIN PWB POWER PWB SUB PWB LC-19SB14U P109-end.indd 2007-10-6 13:35:40...
  • Page 124 TINS-D202WJZZ J Operation Manual CDAI-A413WJ01 J Stand LX-BZA198WJF7 J Screw for stand, x3 UKOGLA009WJZZ J Hexagonal Wrench for stand AC TINS-D212WJZZ J Operation Manual (LC-19SK24U) TINS-D384WJZZ J Operation Manual (LC-19D44U) LC-19SB24U/LC-19SB24U-W/LC-19SB14U Remote control unit ( 1) AC cord ( 1) Cable Clamp ( 1) Stand ( 1) “AA” size manganese battery ( 2)
  • Page 125 Code Ref. No. Part No. Description Code ★ ★ SERVICE JIGS PACKING PARTS (USE FOR SERVICING) (NOT REPLACEMENT ITEM) SPAKCD759WJZZ - Packing Case (LC-19SK24U) − QCNW-C458WJQZ J Extension Cable, 80pin SPAKCD760WJZZ - Packing Case (LC-19SK24U-W) − QCNW-D431WJZZ J Extension Cable SPAKCD509WJZZ - Packing Case (LC-19SB24U) − QCNW-E542WJZZ J Extension Cable SPAKCD510WJZZ - Packing Case (LC-19SB24U-W) − SPAKCD804WJZZ - Packing Case (LC-19SB14U) −...

  • Page 126: ﾈ Packing Of The Set

    LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U PACKING OF THE SET This is for the products(LC-19SB24U/SB24-W/SK24U/SK24U-W/SB14U) manufactured before Nov.2007. LC-19SB14U P109-end.indd 2007-10-6 13:35:41...
  • Page 127 LC-19SK24U/U-W LC-19SB24U/U-W LC-19SB14U LC-19D44U PACKING OF THE SET This is for LC-19D44U,and products(LC-19SB24U/SB24-W/SK24U/SK24U-W/SB14U) manufactured after Nov.2007. Make sure the following accessories are provided with your TV . LC-19D44U LC-19SB14U P109-end.indd 2007-10-6 13:35:42...
  • Page 128 LC-19SB24U/U-W LC-19SB14U LC-19D44U © COPYRIGHT 2007 BY SHARP CORPORATION ALL RIGHTS RESERVED. 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.

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