LC-20D30U S26R5LC20D30U LCD COLOR TELEVISION MODEL LC-20D30U In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used. CONTENTS Page » » » » » » » » » » » » » IMPORTANT SERVICE SAFETY PRECAUTION .........................................................................................2 SPECIFICATIONS ..................................................................
LC-20D30U IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: • Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.
LC-20D30U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ë Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. • Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension en travers de la résistance.
LC-20D30U 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. Example: LFa Indicates lead-free solder of tin, silver and copper. 2 Using lead-free wire solder When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder.
LC-20D30U SPECIFICATIONS Items LCD panel Number of dots Video color systems TV Standard (CCIR) TV Tuning System TV function STEREO CATV Y/C FILTER Brightness Viewing angles Audio amplifier Speakers INPUT1 INPUT2 INPUT3/OUTPUT INPUT4 Terminals INPUT5 Antenna Headphone OSD language Power supply Power consumption Display only Weight Display with stand Operating temperature Model LC-20D30U 20" Advanced Super View & BLACK TFT LCD 3,147,264 dots WXGA N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60 NTSC/PAL-M/PAL-
NOTE POWER/WAKE UP TIMER indicator POWER/WAKE UP TIMER indicator lights up green when the power is on, and red when in the standby mode (the indicator will not light when the main power is off), and orange when the wake up timer is set (the indicator will light when in the standby mode). OPC (Optical Picture Control) indicator The OPC indicator lights up green when "OPC" is set to "ON". Headphone jack ( ) Plug the headphone mini-plug into the headphone jack located on the front of the main unit.
VIEW MODE Selects the screen size. SLEEP Sets the sleep timer. MENU RETURN Returns to the previous screen. AV MODE Selects preferred AV MODE. VOL ( )/( ) Sets the volume. AUDIO ONLY Outputs audio without screen image. MUTE Mutes the sound. MTS Selects audio settings. Channel Select Sets the channel. POWER Switches the Liquid Crystal Television power on or standby. Part Names of the Remote Control 7 BACKLIGHT Adjusts the brightness of the screen. CC Displays Closed Caption subtitles.
LC-20D30U DIMENSIONS Unit: inch (mm) 10 31/64 (266) 5 43/64 (144) 15 (381) 2 /8 (66.5) 5 21 15/64 (539) 4 1/32 (102) 16 5/16 (414) 10 31/64 (266) 9 57/64 (251) 15 7/16 (392) 1 45/64 (43) 17 9/64 (435) 17 17/32 (445.
LC-20D30U REMOVING OF MAJOR PARTS 1. Remove the stand cover fixing screw (1 pc.). 2. Remove the stand fixing screws (4 pcs.). 3. Remove the carrying handle fixing screws (4 pcs.). 4. Remove the terminal cover. 5. Remove the terminal screws (2 pcs.). 6. Remove the cabinet B fixing screws (5 pcs.). 7. Remove the cabinet B after opening from the direction of an arrow. 8. Remove the stand angle fixing screws (4 pcs.). 9. Disconnect all the connectors from all the PWBs.
LC-20D30U 10. Remove the chassis frame fixing screws (3 pcs.). 11. Remove the 2 lock screws from the main PWB. Detach the chassis frame, together with its terminals, from the main PWB. 12. Remove the 4 lock screws from the sub PWB and the PWB fixing angle. Detach the chassis frame together with its terminals, from the sub PWB. 13. Remove the R/C, LED PWB fixing screws (2 pcs.). 14. Remove the 4 lock screws each from the right and left speakers and take out both the speakers. 15.
LC-20D30U » Precautions in handling the LCD panel 1. Handle it in a clean room. (above 50% humidity) 2. The worker must wear an earth band. 3. Be careful not to drop, vibrate and shock the panel. 4. Use an ionizer. (within 30 cm) 16. Remove the 8 lock screws from the panel angle and the panel support angle. And then take out them. 17. Remove the 4 lock screws from the inverter unit angle then detach the inverter unit angle and the inverter PWB. 18.
LC-20D30U »Precautions in servicing the side-B (backside) of the main PWB unit 1. Remove the lock screws (3 pcs.) from the main PWB, detach the PWB from the chassis frame, and then turn it over. 2. Connect the service-specific extension FFC (flat cable) (QCNW-D721WJQZ) between the main PWB (SC5201) and the sub PWB (P5002). 3. Connect the service-specific extension FFC (flat cable) (QCNW-D721WJQZ) between the main PWB (SC5202) and the sub PWB (P5003). 4.
LC-20D30U ADJUSTMENT PROCEDURE OF EACH SECTION 1. Preparations (1) Plug the power cable in an AC power outlet. AC 110 V~240V [1] Adjustment procedure 1-1. Adjusting the checker Power on (initialization) → Model number/inch size settings → Model-specified data transfer to E2PROM (I2C) → EDID data write 1-2.
LC-20D30U [4] Initialization 4-1. Get pins (81) and (82) of IC2001 (microprocessor) grounded, and turn on the power. 4-2. Check the MODEL setting (A633). * The MODEL setting can't be modified. 4-3. Check the INCH SIZE setting (20). * The INCH SIZE setting can't be modified.
LC-20D30U [7] Adjustment 7-1. AD converter level adjustment 1 D3 input 1) Feeding the D3 75% color bar signal Instrument used: LEADER LT446 or LEADER LT448 (1) LEADER LT446 Signal name: COLOR BAR 75% Setting: 01: 1920 x 1080 / 60i H: 33.72 kHz, V: 29.97 Hz (2) LEADER LT448 Signal name: COLOR BAR * Use the LT446-compatible third type out of the 3 color bar patterns. Setting: 02: 1080i / 59.94 (30sF) H: 33.72 kHz, V: 29.97 Hz 2) Turn on the AUTO GAIN-OFFSET1 item on Adjustment Process Page 7.
LC-20D30U 7-3. White balance adjustment 1) Adjustment procedure (Call the AV input mode with INPUT2 or INPUT3.) Adjust the white 40% setting at RGB CUTOFF2 first and then the white 80% setting at RGB-GAIN. (Set the RGB GAMMA level at 0.9.) (1) Test signal adjustment [Input signal] Make the DVP-incorporated white balance test signal (white 80% on the left onscreen: 191-level gradation, white 40% on the right onscreen: 92-level gradation) appear on the screen.
LC-20D30U 8-2. Initial value of factory settings Settings & ranges MENU PICTURE AV MODE STANDARD/DYNAMIC/DYNAMIC(FIXED)/MOVIE/GAME OPC BACKLIGHT ON/OFF BRIGHT/NORMAL/DARK/VARIABLE 1 (DARK)~9 (NORMAL) ~ 17(BRIGHT) CONTRAST 0 ~ 60 BRIGHTNESS COLOR -30 ~ +30 -30 ~ +30 -30 ~ +30 -10 ~ +10 TINT SHARPNESS ADVANCED COLOR TEMP.
LC-20D30U LIST OF THE ADJUSTMENT PROCESS MODE MENU For calling the adjustment process mode and keying in this mode, refer back to "ADJUSTING PROCEDURE OF EACH SECTION". DEFAULT CHART OF ADJUSTMENT PROCESS 1ST HIERARCHICAL ITEMS Page No. Item Initial Value Function Servicing notes & precautions MODEL NUMBER (NOT TO CHANGE) INCH SIZE SELECTION (NOT TO CHANGE) UNMODIFIABLE. USED AT INITIALIZATION. NOT TO MODIFY IN OTHER CASES. IF MODIFIED, DATA TO BE WRITTEN AGAIN AND READJUSTMENT TO BE MADE.
LC-20D30U Page No. Initial Item Function Value Servicing notes & precautions PCAD ADJUSTMENT 8 AUTO GAIN2 AUTO OFFSET2 PCAD R GAIN PCAD G GAIN PCAD B GAIN PCAD R OFFSET PCAD G OFFSET PCAD B OFFSET OFF OFF 180 180 180 128 128 128 RGTAR GGTAR BGTAR RGCAL GGCAL BGCAL ROCAL GOCAL BOCAL AUTOMATIC ADJUSTMENT OFF/RUN OF AD9883 GAIN SEE ADJUSTMENT PROCEDURE. AUTOMATIC ADJUSTMENT OFF/RUN OF AD9883 OFFSET NOT USED SEE ADJUSTMENT PROCEDURE.
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LC-20D30U ADJUSTMENT PROCESS OTHERS DEFAULTS CHART Page No. Item Initial Value Function Servicing notes & precautions BASIC SETTINGS TUNER1 TUNER2 AFT UP AFT DOWN LSYNC HSYNC LSYNC2 1.80 1.
LC-20D30U Ë EDID data writing list (for PC) Address Description 00 Header 01 02 03 04 05 06 07 08 Manufacturer's name 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A Product code Serial No. Production week Production year EDID version No. EDID revision No.
LC-20D30U 1B 1C 1D 1E 1F 20 21 22 23 Red x (9-2bit) Red y (9-2bit) Green x (9-2bit) Green y (9-2bit) Blue x (9-2bit) Blue y (9-2bit) White x (9-2bit) White y (9-2bit) Official timing 1 ex. 0.
LC-20D30U 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64 65 66 67 68 69 6A 6B Details 1/Monitor Details 2/Monitor Details Clock=79.
LC-20D30U 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F Details 4/Monitor Extension flag Check sum [00h] 128 bytes, 00h when all added 27 In the case of year=2006 00 00 00 10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 73
LC-20D30U Ë EDID data writing list (for HDMI) Address Description 00 Header 01 02 03 04 05 06 07 08 Manufacturer's name 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A Product code Serial No. Production week Production year EDID version No. EDID revision No.
LC-20D30U 1B 1C 1D 1E 1F 20 21 22 23 Red x (9-2bit) Red y (9-2bit) Green x (9-2bit) Green y (9-2bit) Blue x (9-2bit) Blue y (9-2bit) White x (9-2bit) White y (9-2bit) Official timing 1 ex. 0.
LC-20D30U 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 Details 1 Pixel clock No. of horizontal pixels: Low-order 8 bits Horizontal blanking: Low-order 8bits Horizontal pixels/horizontal blanking: High-order 4 bits No.
LC-20D30U 51 57 58 59 Horizontal sync pulse width: Low-order 8 bits Vertical sync offset/pulse width: Low-order 4 bits Horizontal sync offset/pulse width Vertical sync offset/pulse width: High-order 2 bits Horizontal image size: Low-order 8 bits Vertical image size: Low-order 8 bits Horizontal/vertical image size: High-order 4 bits Horizontal image size Vertical image size Flag 5A 5B 5C 5D Monitor details Flag Reserve flag DATA TAG 5E 5F 60 61 62 63 64 65 66 67 68 69 6A Flag ASCII String 52 53 54 55
LC-20D30U 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 80 81 82 Minimum horizontal frequency Maximum horizontal frequency Maximum support frequency FOR GTF 1Fh 2Eh 80MHz/10 Set=00h if unused for GTF Set=00h if unused for GTF (Rev1:Set=0Ah) Set=00h if unused for GTF (Rev1:Set=20h) Extension flag Check sum CEA extension header [00h] 128 bytes, 00h when all added TAG Revision Number Detailed Timing Blocks start at Byte Additional details starting address specified (address-80h) Native Format (DTV Monitor Support
LC-20D30U [26]:2880*576@50i (16:9) [27]:2880*288@50p (4:3) [28]:2880*288@50p (16:9) [29]:1440*576@50p (4:3) [30]:1440*576@50p (16:9) [31]:1920*1080@50p (16:9) [32]:1920*1080@24p (16:9) [33]:1920*1080@25p (16:9) [33]:1920*1080@30p (16:9) : : : : : : : : : 7bit:native code (Others below) 86 87 88 89 8A 8B 8C 8D 8E 8F 90 CEA Data Block Collection Audio Data Block Audio Short Block Description 1 CEA Short Audio Descriptor for uncompressed audio (Uncompressed audio data) 7bit:Reserved 6-3bit:Audio Format
LC-20D30U 91 92 CEA Data Block Collection 93 Speaker Allocation Data Block Payload 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 CEA Data Block Collection Vendor Specific Data Block 1 CEA Short Audio Descriptor for uncompressed audio (Uncompressed audio data) 7-3bit:Reserved (Shall be 0) Audio Sample Size 2bit: 24bit 1bit: 20bit 0bit: 16bit 2 CEA Short Audio Descriptor for compressed audio (Compressed audio data) 7-0bit:Maximum bit rate divided by 8kHz Speaker Allocation Data B
LC-20D30U AA AB AC AD AE AF B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 Horizontal/vertical image size: High-order 4 bits Horizontal boundary Vertical boundary Flag Details 4 Pixel clock No. of horizontal pixels: Low-order 8 bits Horizontal blanking: Low-order 8bits Horizontal pixels/horizontal blanking: High-order 4 bits No.
LC-20D30U C2 C3 C4 C5 C6 C7 C8 C9 CA CB No. of horizontal pixels: Low-order 8 bits Horizontal blanking: Low-order 8bits Horizontal pixels/horizontal blanking: High-order 4 bits No.
LC-20D30U E0 E1 E2 E3 Horizontal/vertical image size: High-order 4 bits Horizontal boundary Vertical boundary Flag E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF 7-4bit:Horizontal image size 11-8bit 3-0bit:Vertical image size 11-8bit when not available [00h] when not available [00h] Remaining bytes=00 Extension check sum 10 0pixels 0lines Interlace: Non Stereo: None Sync: Digital [10011110] 00 00 9E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0
LC-20D30U 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 "PUBLIC MODE". Also press the "CH (ù)" and "VOL (+)" keys on the set at once and turn on the power. 2 1) Press the "INPUT" and "VOL (+)" keys on the set at once and turn on the power. 2) Get the password input screen displayed. Procedure » The input starts with the leftmost digit.
LC-20D30U 2. How to exit Public Mode There are the following ways to quit the public mode setup screen. » Turn off "PUBLIC MODE" in the adjustment process mode. (✩) ← This way alone is not for quitting the setup screen, but for quitting the mode itself. » Turn off the power with the "POWER" key. (★) » Select "ENTER". (★) » Move the cursor to "RESET" and press the "FLASHBACK" key. (Back to the normal mode screen)(✩) ★ ... "PUBLIC MODE" stays on in the adjustment process mode. ✩ ...
LC-20D30U 5. On Setting Items * "EZ-SETUP" discussed below indicates "EZ-SETUP after the first power-on". (1) MAXIMUM VOLUME Adjustment from 1 to 60 (no loop) Selection 60 Default Sound volume can not be adjusted higher than the preset value. Explanation Limit in Setting » When the sound volume is set lower than 59, only figures are displayed and the sound volume bar is not displayed. » The maximum sound volume for ON-timer (Wake up timer) is limited also to the preset value.
LC-20D30U (3) VOLUME FIXED LEVEL Selection Default Explanation Limit in Setting Exception Remarks Adjustment from 1 to 60 (no loop) 20 The sound volume to be fixed by "Volume fixed" is determined. None None Setting is valid only when "Volume fixed" is selected for "fixed". This must be confirmed actually by changing also the sound volume in accordance with setting.
LC-20D30U (7) ON SCREEN DISPLAY Selection between "Yes" , "Limited" (loop provide) Yes The following OSD displays are made ineffective. Displays of menu group, channel call, sound volume bar and direct key call Limit in Setting » ON-timer (Wake-up timer) is cleared and set to "OFF". » Set time of the OFF-timer (SLEEP TIMER) is cleared. » Setting of the no-signal power-OFF (AUTO POWER OFF) is cleared to "OFF". » Setting of the no-operation power-OFF is cleared to "OFF".
LC-20D30U (9) INPUT MODE FIXED Selection between "Variable" and "Fixed" (loop provide) – (Variable) The input mode is fixed at the input source or the channel set at the "Input mode start" in 9 and other input sources and channels can be made non-selectable. Limit in Setting » With the execution of hotel mode, the input source is forced to change to that set by "Input mode start" and the channel switching and input switching are prohibited thereafter.
Check IC801 and its peripheral circuits as well as IC1203 and its peripheral circuits. Yes 44 Check IC801 and its peripheral circuits. Check the IC801 signal input line. No No Check the related lines, IC801 itself and its peripheral circuits.
Check the load of IC2003, IC2011, IC802 IC8702, IC8703 and IC7004. No Is the output voltage of IC2003, IC2011, IC802, IC8702, IC8703 and IC7004 as specified? Yes Are the secondary outputs of DCDC converter, IC701, IC702, IC704 and IC706? Yes Is there DC 12V output at T7701 ? Yes Are F7701 as specified? Yes No No No Check IC3301(Audio AMP.), IC1301(Sound Decoder), IC801(Video Decoder), IC8701(AD Converter) and their peripheral parts.
Are the input and output of IC801 as specified? Is the input No Check the IC801 VIDEO at pin (40) line and its of IC801 peripheral as parts. specified? Yes Are the No Check input and IC3402 and output of its peripheral IC3402 as parts. specified? Does the No Check test pattern IC801 and of IC801 its come out? peripheral circuitry. Yes No TV, Input 2 or Input 3 pictures come out. All pictures do not come out. No Check the tuner and its peripheral parts. No Check the power supply line.
Check the output of IC801, the input and output of IC1203 and their peripheral parts. Yes Is the input of IC801 as specified? Yes Is the output of IC8701 as specified? No No Are the inputs at pins (2), No (3), (6), (8), (9) and (11) of IC8701 as specified? Yes Check IC801 and its peripheral parts. Check IC8701 and its peripheral parts. Check the input line and its peripheral parts. No No No Yes No Are the waveform at input pins (108), (109), (111), (112).
Check the speakers and their peripheral parts. Yes Are inputs at pins (2) and (4) as well as outputs at pins (8) and (12), all of IC3301, as specified? Yes Are input and output of IC1301 as specified? Yes Is pin (53) of IC2001 at "L"? Yes Perform the following checking.
No input 2, input 3 colors come out. Check IC801 and its peripheral circuits. Yes Check IC1203, No Does the test its peripheral pattern of the circuitry and the IC801 come out LCD panel. properly? No TV colors come out. No input 1, input 2 colors come out. Check the SC line of J3406 and its peripheral parts. Check the output of IC801, the input and output of IC1203 and their peripheral parts.
LC-20D30U MAJOR IC INFORMATION P1_0/D8 P1_1/D8 P1_2/D10 P1_3/D11 P1_4/D12 P1_5/D13/INT3 P1_6/D17/INT4 P1_7/D15/INT5 P2_0/AN2_0A0(/D0/) P2_1/AN2_1A1(/D1/D0) P2_2/AN2_2A2(/D2/D1) P2_3/AN2_3A3(/D3/D2) P2_4/AN2_4A4(/D4/D3) P2_5/AN2_5A5(/D5/D4) P2_6/AN2_6A6(/D6/D5) P2_7/AN2_7A7(/D7/D6) VSS P3_0/A8(/_/D7) VCC2 P3_1/A9 P3_2/A10 P3_3/A11 P3_4/A12 P3_5/A13 P3_6/A14 P3_7/A15 P3_0/A16 P3_1/A17 P3_2/A18 P3_3/A19 1. IC2001 (RH-iXA633WJN1Q), (RH-iXA633WJZZQ) 1-1.
LC-20D30U 1-2. Pin Functions Pin No.
LC-20D30U Pin No.
LC-20D30U 103 104 105 106 107 108 109 110 111 112 113 115 116 117 118 119 120 121 122 123 124 125 126 114 VDDP SPDIFO 100 MCKO 99 AUMUTE 98 AUWS 97 AUSCK AUSD 95 NC 94 NC 93 NC 92 VDDC 91 GND 90 VDDP 89 GND 88 VDDP 87 GND 86 VDDP 85 NC 84 NC 83 DATA[0] 82 DATA[1] 81 DATA[2] 80 DATA[3] 79 DATA[4] 78 DATA[5] 77 DATA[6] 76 DATA[7] 75 VDDC 74 GND 73 VDDP 72 FIELD/GPO 71 VSOUT 70 HSOUT 69 SOGOUT/DE 68 DATACK 67 VDDC 66 GND 65 VDDP 1 102 2 101 Pin 1 3 4 5 6 96 7 8 9 10 11 12 13 14
LC-20D30U 2-2.
LC-20D30U Output Interface Pin Name DATA[23:0]Note DATACK SOGOUT/DE HSOUT VSOUT IELD/GPO Pin Type Output w/ Pull-Down Resistor Output w/ Pull-Down Resistor Output w/ Pull-Down Resistor Output w/ Pull-Down Resistor Output w/ Pull-Down Resistor Output w/ Pull-Down Resistor Function Data Output Bit [23:0];4~12 mA Driving Strength Programmable by User Clock Output A; 4~12 mA Driving Strength Programmable by User Sync-on-Green Slicer Output for Analog Interface/ Data Enable Output for DVI/HDMI Interface; 4~1
LC-20D30U BLOCK DIAGRAM MAIN SDA,SCL EEPROM IC401 AC_DETECT IC2010 H PC_H,PC_V PC IN SC401 PC_R/G/B LED OPC IC4000 IR Receiver RMC4000 IREM INV_POW,OFL_DAC LED D4000/D4001 OPC_LED,POW_LED,TIMER_LED HP_DET HP_L/R(IC1303) HDMI IN SC402 EEPROM IC2009 MCU IC2001 SP_MUTE,HP_MUTE Schmitt trigger IC402 TEMP SENSOR IC2002 I2C HP JACK J4000 G RESET IC2006 OPC EEPROM SDA SCL IC403 AC_CTRL,POW H,V R/G/B SDA,SCL RR1XC/0/1/2-/+ SHORT_DET SUB CONTROL S4051-S4057 KEY1,KEY2,POW2 F MPWEH,M
1 2 3 58 SR 4 SP_L(-) 4 5 COLD HOT LIVE NEUTRAL B 1 2 SP_L(+) 3 6 9 7 13 12 11 10 GND S_IF SC_IN SC_VIN P5004 WA089WJ AV1_R SY_IN 23 L_MUTE 20 19 18 17 16 15 14 S_STBY GND C/N GND D_LINE3/SC_SLOWSW MON_SW/SC_FB SDA2 S_SW F_SEL0 F_SEL1 SDA SCL2 SCL GND 21 22 24 L_MUTE2 25 26 V_IN/OUT S_IN/OUT V_SEL 14 SP_MUTE D_SEL TV_SEL BS_ERR AGC AFT GND TO MAIN6(INTERFACE) GND DACM_R MON_L PC_L 16 15 17 GND DACM_L 18 19 20 MON_R GND AV1_L CVBS IN 21 22 AV2_R
LC-20D30U 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. INDICATION OF RESISTOR & CAPACITOR: RESISTOR 1. The unit of resistance “Ω” is omitted. (K=kΩ=1000 Ω, M=MΩ). 2. All resistors are ± 5%, unless otherwise noted. (K= ± 10%, F= ± 1%, D= ± 0.5%) 3.
LC-20D30U SCHEMATIC DIAGRAM Ë R/C, LED Unit H G F E D C B A 1 2 3 4 61 5 6
LC-20D30U ËMAIN Unit-1/8 H G F E D C B A 1 2 3 62 4 5 6 7 8 9 10 11 63 12
LC-20D30U ËMAIN Unit-2/8 H G F E D C B A 1 2 3 64 4 5 6 7 8 9 10 11 65 12
LC-20D30U ËMAIN Unit-3/8 H G F E D C B A 1 2 3 66 4 5 6 7 8 9 10 11 67 12
LC-20D30U ËMAIN Unit-4/8 H G F E D C B A 1 2 3 68 4 5 6 7 8 9 10 11 69 12
LC-20D30U ËMAIN Unit-5/8 H G F E D C B A 1 2 3 70 4 5 6 7 8 9 10 11 71 12
LC-20D30U ËMAIN Unit-6/8 H G F E D C B A 1 2 3 72 4 5 6 7 8 9 10 11 73 12
LC-20D30U ËMAIN Unit-7/8 H G F E D C B A 1 2 3 74 4 5 6 7 8 9 10 11 75 12
LC-20D30U ËMAIN Unit-8/8 H G F E D C B A 1 2 3 76 4 5 6 7 8 9 10 11 77 12
LC-20D30U ËSUB Unit-1/7 H G F E D C B A 1 2 3 78 4 5 6 7 8 9 10 11 79 12
LC-20D30U ËSUB Unit-2/7 H G F E D C B A 1 2 3 80 4 5 6 7 8 9 10 11 81 12
LC-20D30U ËSUB Unit-3/7 H G F E D C B A 1 2 3 82 4 5 6 7 8 9 10 11 83 12
LC-20D30U ËSUB Unit-4/7 H G F E D C B A 1 2 3 84 4 5 6 7 8 9 10 11 85 12
LC-20D30U ËSUB Unit-5/7 H G F E D C B A 1 2 3 86 4 5 6 7 8 9 10 11 87 12
LC-20D30U ËSUB Unit-6/7 H G F E D C B A 1 2 3 88 4 5 6 7 8 9 10 11 89 12
LC-20D30U ËSUB Unit-7/7 H G F E D C B A 1 2 3 4 90 5 6
LC-20D30U PRINTED WIRING BOARD ASSEMBLIES H G F R/C, LED Unit (Component Side) (QPWBSD676WJZZ) E RMC4000 R4000 D4000 R4001 Q4000 R4002 R4003 C C4003 C4000 Q4002 R4006 D4002 R4012 C4001 R4011 Q4001 FB4003 D4003 D4007 C4002 IC4000 SC4000 D4005 FB4002 C4006 D4006 D4001 J4000 FB4001 R4013 D4004 D R4010 1 R/C, LED Unit (Chip Parts Side) (QPWBSD676WJZZ) B A 1 2 3 4 91 5 6
LC-20D30U H G F E D C B A MAIN Unit (Side-A) 1 2 3 92 4 5 6 7 8 9 10 11 93 12
LC-20D30U H SC402 P2003 R2111 R2110 D401 D408 SC401 R401 R406 C8729 R8738 C851 C850 C852 C853 C854 R899 R869 R812 R837 IC801 2 R833 R855 C875 R867 R839 C839 R843 R811 R810 C874 C838 C837 C836 C866 C865 R809 R832 R873 C835 C834 C833 C832 1 C840 FB801 FB2001 R2092 IC2002 C2025 C2028 C2024 R803 R2091 L802 R835 R868 R814 FB804 FB806 C860 L703 C841 R898 X1301 FB805 LUG2001 Q707 C861 FB802 C878 C733 C2010 R2018 R2013 C2012 R2031 R2086 D2008 R2032
LC-20D30U H G F E D C B A MAIN Unit (Side-B) 1 2 3 96 4 5 6 7 8 9 10 11 97 12
1 2 98 3 4 5 6 7 8 R743 C724 R709 9 C725 10 99 R712 11 C2023 C2011 IC2010 Q2023 R2095 R2005 C2021 TL2094 TL2092 IC2003 TL2001 TL2003 C2004 C2026 R2066 R2077 R2039 R2048 C2015 R2016 C2007 R2019 R2020 A MAIN Unit (Chip Parts Side-B) 12 TL5281 TL5279 TL2072 TL2004 TL2006 C2002 TL2080 R2055 TL5284 TL5285 R2059 R2007 D2002 TL5289 Q2020 TL2093 Q2025 TL5291 R2006 TL5287TL5283 D5201 TL5288 TL5282 TL5290 TL5286 TL5280 R2043 TL2081 TL5275 R2011 C2001 R2106 Q2002 C2018 R2
LC-20D30U H G F E D C B A SUB Unit (Wiring Side) (QPWBFD674WJN1) 1 2 3 100 4 5 6 7 8 9 10 11 101 12
LC-20D30U TL4051 TL4054 TL3406 R3407 TL5087 TL7712 R6724 R3434 C3303 TL3411 R3302 TL3499 R3413 TL3495 TL3301 TL3302 D3206 R6741 C3310 C3302 TL3410 D3211 D3207 R3406 D3210 R3403 D3208 TL7705 TL3402 C3306 R7725 C7712 C3408 R3405 R3412 R7720 R7709 R6739 C7713 D3209 TL6718 TL3494 TL3403 TL5075 TL7711 TL7713 R3410 R3543 D3401 C3425 C3316 D3402 TL3412 C3405 C3318 C3311 C6720 C3320 R3432 Q3301 D3301 R3309 R3444 R3306 R3301 R7714 TL5093 TL5094 R3308 D341
LC-20D30U Ref. No. Part No. ★ Description Code PARTS LIST Ref. No. ★ Part No. Description LISTE DES PIECES Code PARTS REPLACEMENT CHANGE DES PIECES Replacement parts which have these special safety characteristics identified in this manual ; electrical components having such features are identified by å and shaded areas in the Replacement Parts Lists and Schematic Diagrams.
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LC-20D30U Ref. No. ★ Part No. Description Code DUNTKD676FM03 Ref. No. CAPACITORS 16V 50V 10V Electrolytic Ceramic Ceramic AC AA AB DIODES D4000 RH-PX0421CEZZY J POWER/WAKE UP TIMER Indicator D4001 RH-PX0421CEZZY J OPC Indicator D4006 RH-EX0259TAZZY X Zener Diode, 5.
LC-20D30U CABINET AND MECHANICAL PARTS 24 H 23 26 B A G 1-4 F 24 1-3 B 27 23 1-3 G 5 31 M 1-4 B 1-2 13 5-1 4-13 5-2 5-3 38 5-5 5-5 5-6 5-4 C 39 32 R/C, LED PWB E 1-5 L 4-12 B Inverter PWB 1-1 5-4 C A 5-7 C D J 38 31 5-5 1 F K 4-11 I 4-7 M 13 C 4-10 LCD Control PWB 4-10 4-5 4-14 4-3 H 4-1 E 4-2 4-8 4-9 C 7 2-3 4-7 38 D 10 31 4-6 2-5 4-4 8 H 9 C 4 A 2 31 11 22 17 12 35 2-2 C 21 35 Main PWB L 38 6 A 28 15 B 34 2-1 J 35 35
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LC-20D30U PACKING OF THE SET S4 X1, X5, X6 X3 X2 S3 X4 X7 S2 R L S3 S5 S1 115
LC-20D30U COPYRIGHT © 2006 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. TQ1991-S Mar. 2006 Printed in Japan Design and Production Information Design : NSEC Production : SEMEX MI.
