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LC-20B6U-S

SERVICE MANUAL

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.

MODEL

LC-20B6U-S

SHARP CORPORATION

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

LCD COLOR TELEVISION

CONTENTS

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IMPORTANT SERVICE SAFETY PRECAUTION ......................................................................................... 2

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SPECIFICATIONS ........................................................................................................................................5

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OPERATION MANUAL .................................................................................................................................6

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DIMENSIONS ...............................................................................................................................................8

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REMOVING OF MAJOR PARTS .................................................................................................................. 9

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ADJUSTING PROCEDURE OF EACH SECTION ..................................................................................... 14

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TROUBLE SHOOTING TABLE .................................................................................................................. 28

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MAJOR IC INFORMATIONS ...................................................................................................................... 33

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CHASSIS LAYOUT ..................................................................................................................................... 48

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BLOCK DIAGRAM ...................................................................................................................................... 50

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OVERALL WIRING DIAGRAM ................................................................................................................... 52

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DESCRIPTION OF SCHEMATIC DIAGRAM ............................................................................................. 54

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SCHEMATIC DIAGRAM ............................................................................................................................. 55

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PRINTED WIRING BOARD ASSEMBLIES ................................................................................................81

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REPLACEMENT PARTS LIST .................................................................................................................... 90

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PACKING OF THE SET ............................................................................................................................103

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S64T8LC20B6US

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Summary of Contents for LC-20B6US Operation

Page 1: ...service only The contents are subject to change without notice LCD COLOR TELEVISION CONTENTS IMPORTANT SERVICE SAFETY PRECAUTION 2 SPECIFICATIONS 5 OPERATION MANUAL 6 DIMENSIONS 8 REMOVING OF MAJOR PARTS 9 ADJUSTING PROCEDURE OF EACH SECTION 14 TROUBLE SHOOTING TABLE 28 MAJOR IC INFORMATIONS 33 CHASSIS LAYOUT 48 BLOCK DIAGRAM 50 OVERALL WIRING DIAGRAM 52 DESCRIPTION OF SCHEMATIC DIAGRAM 54 SCHEMAT...

Page 2: ...ended replacement parts shown in this service manual may create shock fire or other hazards WARNING 1 For continued safety no modification of any circuit should be attempted 2 Disconnect AC power before servicing BEFORE RETURNING THE RECEIVER Fire Shock Hazard Before returning the receiver to the user perform the following safety checks 1 Inspect all lead dress to make certain that leads are not p...

Page 3: ...ncendies radiations X ou autres accidents AVERTISSEMENT 1 N entreprendre aucune modification de tout circuit C est dangereux 2 Débrancher le récepteur avant toute réparation VERIFICATIONS CONTRE L INCEN DIE ET LE CHOC ELECTRIQUE Avant de rendre le récepteur à l utilisateur effectuer les vérifications suivantes 1 Inspecter tous les faisceaux de câbles pour s assurer que les fils ne soient pas pincé...

Page 4: ...h 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 contain...

Page 5: ...C AUDIO Mini jack for stereo ø3 5 mm Antenna F Type Headphone Mini jack for stereo ø3 5 mm OSD language English Spanish French Power supply DC 12V AC 110 240V 50 60Hz AC adapter AC 110 125V AC cord Power consumption 81 W 0 5 W standby AC 120V 71 W DC 12V Weight 19 0 lbs 8 6 kg w o accessories Accessories Remote control Battery 2 Antenna cable AC adapter RGB cable AC cord Cable holder Cable clamp O...

Page 6: ... watched most comfortably MAIN POWER Upper control panel INPUT MENU CH Channel VOL Volume Speaker Speaker Listening with Headphones Plug the headphone mini plug into the HEADPHONE jack located on the rear of the main unit Headphones are not included in the supplied accessories No sound is heard from the main unit speakers when a headphone mini plug is connected into the HEADPHONE jack On screen di...

Page 7: ... system User setting TV Video TV Video Country PIC FLIP Sets the orientation of the picture SLEEP Sets the sleep timer ENTER Executes a command MENU RETURN Returns to the previous screen MUTE Mutes the sound AUDIO ONLY Outputs audio without screen image VOL Sets the volume MTS Selects audio settings Installing Batteries in the Remote Control Before using the LCD TV set for the first time install t...

Page 8: ... 16 11 64 410 5 12 5 32 308 4 10 9 32 261 15 31 64 393 17 51 64 452 2 21 64 59 8 23 64 212 15 1 8 384 26 1 2 673 including rubber foot 17 23 32 450 7 1 64 178 2 59 64 74 9 39 64 244 including rubber foot 1 27 32 47 3 15 16 100 3 15 16 100 ...

Page 9: ... detach the cabinet B 6 Remove the four lock screws from the stand angle and detach the reinforcement angle 7 Disconnect all the connectors from all the PWBs Cabinet B 4 3 1 2 2 5 6 Cabinet A Terminal Cover S Terminal Cover L Stand 5 4 5 3 5 2 5 1 5 5 P4050 CN1 SC1201 SC701 P2003 SC3403 P6701 P3302 P3404 P3303 P4001 P3703 SC2001 P3704 P6707 P6702 P6703 P6704 P6705 P6706 Operation PWB Reinforcement...

Page 10: ...he operation PWB and detach the operation PWB 10 Remove the two lock screws from the R C LED PWB and detach the R C LED PWB 11 Remove the two lock screws each from the speaker boxes left and right and detach both the speaker boxes Speaker Box R R C LED PWB Analog PWB Main PWB Speaker Box L Inverter PWB Operation panel Top Cover Operation PWB 11 9 8 11 10 ...

Page 11: ...Remove the four lock screws from the analog PWB and undo the claws c and d Detach the chassis frame right from the analog PWB by pulling out the terminals In the same way undo the claws e and f and detach the chassis frame left from the analog PWB by pulling out the terminals Note When detaching the main PWB and analog PWB be careful not to break the PWB fixing claws Inverter PWB Main PWB Analog P...

Page 12: ...on plate 17 Remove the lamp unit from the lamp holder top Then detach the bottom left and bottom right lamp holders 18 Remove the upper and lower reflection sheets from the back shield Lamp Holder Bottom Left LHLDZA368WJKZ Lamp Holder Top LHLDZA365WJKZ Lamp Unit KLMP A034WJZZ Reflection Sheet Bottom PSHEPA206WJZZ Lamp Holder Bottom Right LHLDZA367WJKZ Back Shield PSLDMA448WJFW Lamp Holder Top LHLD...

Page 13: ... the service specific extension FFC flat cable QCNW C459WJQZ 2 Disconnect the SC701 side of the lead from between the main PWB SC701 and the analog PWB P3704 and then connect the service specific extension cord QCNW B461WJQZ 3 Disconnect the FFC for connection between the main PWB SC1201 and LCD panel unit and then connect the service specific extension FFC flat cable QCNW C458WJQZ 4 Remove the lo...

Page 14: ...m When the menu key is pressed with the cursor placed on the bottom item the cursor will move to the top item on the next page Pressing the manual memory key will return the cursor to the top item When the manual memory key is pressed with the cursor placed on the top item the cursor will move to the top item on the previous page Pressing the auto preset key will move the cursor to the top item on...

Page 15: ...ATA falls within this range Note that settings may vary with models 3 Set PAL M TAMP and PAL N TAMP to the same value to which NTSC TAMP is set Reference Page 2 of adjustment process menu Model LC 20B6U S Setting 157 160 0 2 1 2 C T Y T N P P 3 O A D A T A A 4 M M A M S L L 5 P T P C 6 B A M N 7 I L H T 8 A A T T 9 S M A A 10 P P 11 12 13 14 15 16 17 18 19 20 21 4 1 1 1 22 2 5 5 6 9 9 9 23 7 7 9 0...

Page 16: ...e component 1080i input and check that White 20 and White 80 are within the inspection specifications on the next page 9 If White 20 and White 80 are not within the inspection specifications make the adjustment described in steps 2 to 4 0 Select the PC VGA input and check that White 20 and White 80 are within the inspection specifications on the next page q If White 20 and White 80 are not within ...

Page 17: ...SETTING ON AUTO CLOCK ON LAST CHANNEL 2ch LAST TV INPUT TV FLASH BACK 2ch VOLUME 20 MENU PICTURE AV MODE DYNAMIC OPC OFF BACKLIGHT BRIGHT 17 CONTRAST 56 BRIGHTNESS 0 COLOR 2 TINT 0 SHARPNESS 4 ADVANCED COLOR TEMP MIDDLE RED 0 GREEN 0 BLUE 0 I P SETTING PROGRESSIVE NOISE CLEAN OFF FILM MODE OFF QUICK SHOOT ON MENU AUDIO TREBLE 0 BASS 0 BALANCE 0 WIDE SOUND OFF SPEECH EMPHASIS OFF PC SOUND SELECT PC...

Page 18: ...EAR BLOCK CONTENT D L S V FV ALL CLEAR CAN ENGLISH RATINGS C C8 G PG 14 18 ALL CLEAR CAN FRENCH RATINGS G 8 ans 13 ans 16 ans 18 ans ALL CLEAR STATUS OFF CLOSED CAPTION OFF COLOR SYSTEM FOR TV N358 COLOR SYSTEM FOR AV 1 AND 2 AUTO PC SETTING INPUT SIGNAL 1024 x 768 FINE SYNC H POS 0 V POS 0 CLOCK 0 PHASE 0 LANGUAGE ENGLISH MENU OPTION VIEW MODE 4 3 AUDIO ONLY OFF SLEEP TIMER OFF WAKEUP TIMER TIMER...

Page 19: ...4 WHITE BALANCE ADJUSTMENT REFER TO METHOD OF ADJUSTMENT REF 0 REFERENCE SETTING REFER TO METHOD OF ADJUSTMENT R CUTOFF2 0 RED CUTOFF ADJUSTMENT REFER TO METHOD OF ADJUSTMENT G CUTOFF2 0 GREEN CUTOFF ADJUSTMENT REFER TO METHOD OF ADJUSTMENT B CUTOFF2 0 BLUE CUTOFF ADJUSTMENT REFER TO METHOD OF ADJUSTMENT R GAIN 64 WHITE BALANCE ADJUSTMENT REFER TO METHOD OF ADJUSTMENT G GAIN 64 WHITE BALANCE ADJUS...

Page 20: ... R CUTOFF2 0 PC RED CUTOFF ADJUSTMENT REFER TO METHOD OF ADJUSTMENT PC G CUTOFF2 0 PC GREEN CUTOFF ADJUSTMENT REFER TO METHOD OF ADJUSTMENT PC B CUTOFF2 0 PC BLUE CUTOFF ADJUSTMENT REFER TO METHOD OF ADJUSTMENT PC R GAIN 64 PC WHITE BALANCE ADJUSTMENT REFER TO METHOD OF ADJUSTMENT PC G GAIN 64 PC WHITE BALANCE ADJUSTMENT REFER TO METHOD OF ADJUSTMENT PC B GAIN 64 PC WHITE BALANCE ADJUSTMENT REFER ...

Page 21: ...E OF CLAMPAREA NOT USED TABLE OF CONTENTS FOR SETTINGS 9 I2C DATA 000000000000 I2C BUS CONTROL C DATA WRITE AND READ NOT USED I2C DATA WAIT WRITE AND READ EXECUTION NOT USED SOUND SHIFTING TO SOUND ADJUSTMENT PAGE SHIFTING TO SOUND ADJUSTMENT PAGE WITH ENTER KEY TC SHIFTING TO TC ADJUSTMENT PAGE SHIFTING TO TC ADJUSTMENT PAGE WITH ENTER KEY G A SHIFTING TO G A ADJUSTMENT PAGE SHIFTING TO G A ADJUS...

Page 22: ...ER LIMIT TABLE 09 LIMIT SETTING NOT USED EQ LIMIT 10 48 EQUALIZER LIMIT TABLE 10 VOLUME SETTING NOT USED EQ LIMIT 10 12 0 EQUALIZER LIMIT TABLE 10 LIMIT SETTING NOT USED EQ LIMIT 11 50 EQUALIZER LIMIT TABLE 11 VOLUME SETTING NOT USED EQ LIMIT 11 12 0 EQUALIZER LIMIT TABLE 11 LIMIT SETTING NOT USED EQ LIMIT 12 52 EQUALIZER LIMIT TABLE 12 VOLUME SETTING NOT USED EQ LIMIT 12 12 0 EQUALIZER LIMIT TABL...

Page 23: ...NOT USED VGA OSD VS 001E OSD VD START TIMING CORRECTION FOR PC VGA NOT USED VGA OSD HS 0030 OSD HD START TIMING CORRECTION FOR PC VGA NOT USED VGA OSD VE 001F OSD VD END TIMING CORRECTION FOR PC VGA NOT USED VGA OSD HE 0060 OSD HD END TIMING CORRECTION FOR PC VGA NOT USED TC3 N358 TV CONT 96 N358 VIDEO SETTING TV NOT USED N358 AV CONT 96 N358 VIDEO SETTING COMPOSITE S VIDEO NOT USED N358 TV SUBCON...

Page 24: ...OSITE S VIDEO NOT USED PAL N TV SUBCONT 5 PAL N SUB CONTRAST SETTING TV NOT USED PAL N AV SUBCONT 11 PAL N SUB CONTRAST SETTING COMPOSITE S VIDEO NOT USED PAL N TV BRIGHT 7 PAL N BRIGHTNESS SETTING TV NOT USED PAL N AV BRIGHT 7 PAL N BRIGHTNESS SETTING COMPOSITE S VIDEO NOT USED PAL N TV COLOR 168 PAL N COLOR STRENGTH SETTING TV NOT USED PAL N AV COLOR 168 PAL N COLOR STRENGTH SETTING COMPOSITE S ...

Page 25: ...ATURE THRESHOLD SETTING NOT USED BETWEEN QS SELECTION TABLES 0 AND 1 TABLE1 2 0 C TEMPERATURE THRESHOLD SETTING NOT USED BETWEEN QS SELECTION TABLES 1 AND 2 TABLE2 3 5 C TEMPERATURE THRESHOLD SETTING NOT USED BETWEEN QS SELECTION TABLES 2 AND 3 TABLE3 4 10 C TEMPERATURE THRESHOLD SETTING NOT USED BETWEEN QS SELECTION TABLES 3 AND 4 TABLE4 5 15 C TEMPERATURE THRESHOLD SETTING NOT USED BETWEEN QS SE...

Page 26: ... SYSTEM AUTO COMPONENT SIGNAL SELECTION IN ADJUSTMENT PROCESS NOT USED REMOCON CODE SHOULD BE DISPLAYED AT THE BOTTOM OTHERS2 CLOSED CAPTION 15 CLOSED CAPTION THRESHLEVEL NOT USED CCD ISO 16 CLOSED CAPTION PHASE SETTING NOT USED EZ SETUP ON PRESENCE OR ABSENCE OF DISPLAY OF EZ SET UP NOT USED ADJUSTMENT PROCESS OTHERS ITEM DEFAULT TABLE EDS DATA SHOULD DISPLAYED AT THE BOTTOM 0 1 2 3 4 5 6 7 8 9 1...

Page 27: ...EST PATTERN turns yellow Now use the cursor RIGHT LEFT keys to get the test pattern displayed To turn off the test pattern use the cursor RIGHT LEFT keys again If the cursor UP DOWN keys are wrongly pressed and the cursor RIGHT LEFT keys become ineffective just turn OFF the power 2 Test pattern displayed The following test pattern appears onscreen 256 dot 256 dot 256 dot 256 dot Red gradation Gree...

Page 28: ...urned on again 1 MODEL A625 INCH SIZE 20 ERROR NO RESET 0 PUBLIC MODE OFF V CHIP 1 CANADIAN VCHIP ON EXT CONTROL OFF BLUE BACK 0 VER ROM 1 05A GAIBU 1 050 Note This model is equipped with the lamp error detection function that detects the current flowing into the fluorescent lamp and protects the backlight lamp drive circuit If a lamp error is detected the microprocessor interrupts the unit and th...

Page 29: ...6705 Q6712 free from short circuit Check Q6705 Q6712 and their peripheral parts Is the oscillation waveform of the primary side of T6701 T6712 normal Replace and check the fluorescent lamp Check the peripheral parts of Q6701 Q6704 and the connecting cable Are the primary side peripheral parts of T701 and SC701 Q716 and Q715 free from short circuit Is the load side free from short circuit when F370...

Page 30: ...rts Check IC801 and its input line and peripheral parts Are the inputs at pins 3 6 and 10 of IC403 as specified Is the voltage at pin 16 of IC403 as specified Are the outputs at pins 4 7 and 9 of IC403 as specified Are the inputs at pins 43 48 and 54 of IC8701 as specified Is the output of IC8701 as specified Is the input of IC801 as specified No Yes No Yes Check the output of IC801 the input and ...

Page 31: ...C3404 Do all the input modes TV video 1 and component 1 2 fail to produce sounds Perform the following checking 1 Is the monitor output set to Sound Fixed or Sound Variable 2 Is the sound volume level sufficient 3 Is the muting effect turned off 4 Are the headphones disconnected Do the following 1 Set the monitor output to Sound Fixed 2 Raise the sound volume level 3 Turn off the muting effect 4 D...

Page 32: ... the input and output of IC1201 and their peripheral parts Check Q401 Q402 and Q403 Check IC403 and its peripheral parts Check the input line and its peripheral parts Check IC8701 and its peripheral parts Are the inputs at pins 3 6 and 10 of IC403 as specified Is the voltage at pin 16 of IC403 as specified Are the outputs at pins 4 7 and 9 of IC403 as specified Check IC801 and its input line and p...

Page 33: ...5 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 VHOLD1 HLF1 P94 DA1 SCL3 RXD2 P93 DA0 SDA3 TXD2 P92 TB2IN DIGR0 P91 TB1IN P90 TB0IN BYTE CNVss P87 XCIN DIGG0 P86 XCOUT DIGB0 RESET XOUT VSS XIN VCCI OSC1 OSCHLF OSC2 P83 INT1 P82 INT0 OUT1 OUT2 P77 HC1 P76 TA3 OUT P75 HC0 P74 TA2 OUT P73 CTS2 R...

Page 34: ...TS2 I INCH2 INCH DISCRIMINATION PORT 2 H 13 INCH 28 P72 SCL2 CLK2 I O SCL2 SERIAL CLOCK LINE 2 FOR I2C BUS 2 SYSTEM EEPROM AV SW BS TUNER 29 P71 SCL1 RXD2 I O SCL1 SERIAL CLOCK LINE 1 FOR I2C BUS 2 SYSTEM OTHERS 30 P70 SDA1 SXD2 I O SCA1 SERIAL DATA LINE 1 FOR I2C BUS 2 SYSTEM 31 P67 SDA2 I O SCA2 SERIAL DATA LINE 2 FOR I2C BUS 2 SYSTEM 32 R DIGR1 O OSD_R R SIGNAL OUTPUT OF OSD 33 G DIGR1 O OSD_G ...

Page 35: ...PUT 74 P01 D1 O DACOUTCON GRAY SCALE CONTROL IC FOR OUTPUT CONTROL 13 AND 15 INCH ONLY 75 P15 D13 O MP_RCS TEMPERATURE SENSOR CHIP SELECT 76 P14 D12 I MP_RDA TEMPERATURE SENSOR DATA INPUT 77 P13 D11 O MP_CS CHIP SELECT FOR QS READY CONTROLLER 78 P12 D10 O MP_DA QS READY CONTROLLER OR GRAY SCALE CONTROL IC DATA OUTPUT 79 P11 D9 O MP_CLK QS READY CONTROLLER TEMPERATURE SENSOR OR GRAY SCALE CONTROL I...

Page 36: ...N 1 370 DIG_C_IN 3 VDDC 10 PCH_IN GND VSS12 GND VSS12 PWR2 VDDC VSS12 VSS12 VSS12 PCB_IN 6 VDDC I_IN VDDS VSS12 VSS12 79 VBIREADY 90 PLL1AVDD CVBS1IN YVREFT 5 5 16 16 318 315 GND GND GND GND GND GND 147 148 TST2_IN 0 319 TST2_IN 1 TTSTCK108 320 ST2_IN 2 PWR1 VDDC VSS12 VSS12 VSS12 VSS12 VSS12 VSS12 146 PLL2AVDD FIL2 PLL2AVSS 16 16 15 15 321 324 GND GND GND GND GND GND 142 141 140 139 TST2_IN 3 322...

Page 37: ...D11 DIG_OUT 7 D12 DIG_FIELD_OUT D13 VSS12 D14 MONITOR D15 TST2_IN 3 D16 TST2_IN 0 D17 TSTMODE 4 D18 TSTD_IN 0 D19 TSTD_IN 4 D20 TSTD_IN 9 D21 TSTD_IN 13 D22 TSTD_IN 15 D23 VSS12 D24 NC_D24 D25 NC_D25 D26 NC_D26 E1 NC_E1 E2 DIG_FIELD_IN E3 DRAM1GND1 E4 DRAM12VDD1 E5 VSS12 E6 VSS12 E7 VDDC E8 DIG_C_IN 7 E9 VDDS E10 DIG_OUT 6 E11 VDDC E12 DIG_VD_OUT E13 VSS12 E14 VSS12 E15 NC_E15 E16 VDDC E17 TSTMODE...

Page 38: ...U22 BLUE1 0 U23 RED2 6 U24 RED2 5 U25 RED2 4 U26 RED2 3 V1 NC_V1 V2 YS_IN V3 NC_V3 V4 NC_V4 V5 VDDS V22 VDDS V23 BLUE1 3 V24 BLUE1 2 V25 BLUE1 1 V26 RED2 7 W1 VSS12 W2 VSS12 W3 VSS12 W4 VSS12 W5 VSS12 W22 NC_W22 W23 GREEN1 0 W24 BLUE1 6 W25 BLUE1 5 W26 BLUE1 4 Y1 XO_V_IN Y2 XO_VDD Y3 YCLAMP2 Y4 YCLAMP1 Y5 VBIREADY Y22 VDDC Y23 GREEN1 2 Y24 GREEN1 1 Y25 BLUE1 7 Y26 NC_Y26 AA1 XO_V_OUT AA2 NC_AA2 AA...

Page 39: ... AE6 NC_AE6 AE7 NC_AE7 AE8 NC_AE8 AE9 CIN AE10 NC_AE10 AE11 CBIN AE12 NC_AE12 AE13 CRIN AE14 NC_AE14 AE15 DABIAS22 AE16 FIL2 AE17 VSS12 AE18 OSDRB_D1B_IN AE19 OSDIB_D4B_IN AE20 OSDRA_D1A_IN AE21 OSDIA_D4A_IN AE22 OSD_N_CLK AE23 RED1 5 AE24 RED1 3 AE25 VSS12 AE26 VSS12 AF1 NC_AF1 AF2 DAGND1 AF3 DABIAS11 AF4 Y_BIASAD AF5 YVREFT AF6 YAD_VSS AF7 YVREFB AF8 NC_AF8 AF9 CAD_VSS AF10 C2AD_VSS AF11 NC_AF11...

Page 40: ... 8 bit A D 2 C2VREFT A 8 bit A D 2 REFERENCE TOP VOLTAGE PIN Cb in I A Cb INPUT C2AD VDD VDD 8 bit A D 2 CORE POWER SUPPLY PIN Blue in I A B INPUT C2VREFB A 8 bit A D 2 REFERENCE BOTTOM VOLTAGE PIN C2AD GND GND 8 bit A D 2 CORE GND C3_BIASAD A BIAS VOLTAGE PIN FOR 8 bit A D 3 C3VREFT A 8 bit A D 3 REFERENCE TOP VOLTAGE PIN Cr in I A Cr INPUT C3AD VDD VDD 8 bit A D 3 CORE POWER SUPPLY PIN Red in I ...

Page 41: ... PCR in 2 I D PCR in 1 I D PCR in 0 I D PCG in 7 I D PC G SIGNAL INPUT PIN PCG in 6 I D PCG in 5 I D PCG in 4 I D PCG in 3 I D PCG in 2 I D PCG in 1 I D PCG in 0 I D PCB in 7 I D PC B SIGNAL INPUT PIN PCB in 6 I D PCB in 5 I D PCB in 4 I D PCB in 3 I D PCB in 2 I D PCB in 1 I D PCB in 0 I D PCH in I D PC HD SIGNAL INPUT PIN PCV in I D PC VD SIGNAL INPUT PIN PCCK in I D PC CLOCK INPUT PIN R656 in 2...

Page 42: ...NPUT PIN OSD VD out O D VD OUTPUT FOR OSD µ COM OSD HD out O D HD OUTPUT FOR OSD µ COM OSD CLK I O D CLOCK I O FOR OSD µ COM POSITIVE POLARITY OSD n CLK I O D CLOCK I O FOR OSD µ COM NEGATIVE POLARITY DRAM DRAM 20 DTMB I D DRAM TEST MODE INPUT DTCLK I D DRAM TEST CLOCK INPUT DRAM 1 VDD 1 VDD 1 5V VDD FOR 4M DRAM DRAM 1 GND 1 GND 1 5V GND FOR 4M DRAM DRAM 1 VDD2 VDD 1 5V VDD FOR 4M DRAM DRAM 1 GND2...

Page 43: ...RED2 3 O D RED2 2 O D RED2 1 O D RED2 0 O D GREEN2 7 O D G SIGNAL OUTPUT PIN 2 8bit GREEN2 6 O D GREEN2 5 O D GREEN2 4 O D GREEN2 3 O D GREEN2 2 O D GREEN2 1 O D GREEN2 0 O D BLUE2 7 O D B SIGNAL OUTPUT PIN 2 8bit BLUE2 6 O D BLUE2 5 O D BLUE2 4 O D BLUE2 3 O D BLUE2 2 O D BLUE2 1 O D BLUE2 0 O D LCD HD O D HD SIGNAL OUTPUT PIN FOR DISPLAY TIMING LCD VD O D VD SIGNAL OUTPUT PIN FOR DISPLAY TIMING ...

Page 44: ...TMODE 3 I D TEST MODE PIN TSTMODE 4 I D TEST MODE PIN MBIST I D MEMORY BIST MODE PIN SCAN I D SCAN TEST MODE PIN TEST INPUT 26 TSTD2 in 4 I D TEST ONLY INPUT PIN TSTD2 in 3 I D TSTD2 in 2 I D TSTD2 in 1 I D TSTD2 in 0 I D TSTD in 15 I D TSTD in 14 I D TSTD in 13 I D TSTD in 12 I D TSTD in 11 I D TSTD in 10 I D TSTD in 9 I D TSTD in 8 I D TSTD in 7 I D TSTD in 6 I D TSTD in 5 I D TSTD in 4 I D TSTD...

Page 45: ...RY INPUT DATA SIGNAL 29 VB GRAY SCALE OUTPUT PIN 10 OSC TUNING CLOCK INPUT OUTPUT 30 VA GRAY SCALE OUTPUT PIN 11 DVCC LOGIC POWER SUPPLY INPUT 31 V9 GRAY SCALE OUTPUT PIN 12 NC 32 V8 GRAY SCALE OUTPUT PIN 13 VCC BUFFER AMP POWER SUPPLY INPUT 33 V7 GRAY SCALE OUTPUT PIN 14 VCC BUFFER AMP POWER SUPPLY INPUT 34 V6 GRAY SCALE OUTPUT PIN 15 REFIN DAC REFERENCE INPUT 35 V5 GRAY SCALE OUTPUT PIN 16 VDAC ...

Page 46: ...H14 H15 H16 H MA8 GND MDO21 MDO22 3 3V 3 3V GND GND GND GND NC NC J J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16 J MA4 MA3 MA7 MA6 3 3V 3 3V GND GND GND GND NC NC GND G2N K K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K MA0 BA1 MA5 MA2 MA9 3 3V GND GND GND GND NC OFL1 OFL2 NC G2P L L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L 2 5V BA0 MA1 MA10 MDE11 GND 3 3V 3 3V 3 ...

Page 47: ...14 OFL2 222 P14 B2P 31 B15 GND 95 F15 R3P 159 K15 NC 223 P15 B2N 32 B16 RCLKN 96 F16 VCCAUX 160 K16 G2P 224 P16 B3N 33 C1 MDO2 97 G1 MDO17 161 L1 VCCAUX 225 R1 MEM_CLK 34 C2 MDO3 98 G2 MDO18 162 L2 BA0 226 R2 GND 35 C3 MDO4 99 G3 MDO19 163 L3 MA1 227 R3 MDE1 36 C4 HSWAP_EN 100 G4 MDO20 164 L4 MA10 228 R4 MDE5 37 C5 IB3 101 G5 MDO23 165 L5 MDE11 229 R5 MDE8 38 C6 IB5 102 G6 VCCO33 166 L6 GND 230 R6...

Page 48: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 48 CHASSIS LAYOUT MAIN Unit R C LED Unit ...

Page 49: ...LC 20B6U S 49 17 16 19 18 15 14 13 12 11 10 OPERATION Unit ANALOG Unit ...

Page 50: ... 5V DC DC IC704 Q714 17V DC DC IC705 Q715 1 2V DC DC IC707 Q721 12V 9V 35V REG IC1705 1 5V IC SIG VCC SOUND VCC INV VCC 720p 1080i AV IN2 OUT J3404 COMPONENT IN1 J3407 J3406 SIF TUNER TU3401 I2 C AUDIO DECODER MSP IC3201 AUDIO AMPLIFIER TV V AV SELECT IC3401 HEAD PHONE AMPLIFIRE PC RGB IN SC401 EDID E2PROM IC401 RGB YPBPR SWITCH IC403 I2 C PC AUDIO IN J3409 L R INVERTER UNIT SP L R HEAD PHONE JACK...

Page 51: ... E2 PROM IC2005 RESET IC2003 3WIRE KEY1 KEY2 POW2 EDID E2PROM IC401 A D CONVERTER IC8701 I2 C LCD PANEL LCD CONTROLLER IC1201 FPGA CONFIGURATION ROM IC1204 MEMORY VIDEO PROCESSER IC801 3D Y C HEAD PHONE JACK J4021 LED D4001 D4002 R C RECEIVER RMC4001 CONTROL KEYS SW4050 4052 SW4054 4056 POWER SWITCH S4053 OPERATION UNIT CS DRIVE Q1101 Q1102 GRADUATION IC1101 I2 C I2 C MAIN UNIT IC1202 IC1203 3WIRE...

Page 52: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 52 OVERALL WIRING DIAGRAM ...

Page 53: ...LC 20B6U S 53 17 16 19 18 15 14 13 12 11 10 ...

Page 54: ...APACITOR 1 All capacitors are µF unless otherwise noted P pF µµF 2 All capacitors are 50V unless otherwise noted 3 All capacitors are Ceramic type unless otherwise noted ML Mylar TA Tantalum PF Polypro Film ST Styrol CAUTION This circuit diagram is original one therefore there may be a slight difference from yours IMPORTANT SAFETY NOTICE PARTS MARKED WITH å ARE IMPORTANT FOR MAINTAINING THE SAFETY...

Page 55: ...55 6 5 4 3 2 1 A B C D E F G H LC 20B6U S SCHEMATIC DIAGRAM Ë OPERATION Unit ...

Page 56: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 56 ËMAIN Unit 1 9 ...

Page 57: ...LC 20B6U S 57 17 16 19 18 15 14 13 12 11 10 ...

Page 58: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 58 ËMAIN Unit 2 9 ...

Page 59: ...LC 20B6U S 59 17 16 19 18 15 14 13 12 11 10 ...

Page 60: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 60 ËMAIN Unit 3 9 ...

Page 61: ...LC 20B6U S 61 17 16 19 18 15 14 13 12 11 10 ...

Page 62: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 62 ËMAIN Unit 4 9 ...

Page 63: ...LC 20B6U S 63 17 16 19 18 15 14 13 12 11 10 ...

Page 64: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 64 ËMAIN Unit 5 9 ...

Page 65: ...LC 20B6U S 65 17 16 19 18 15 14 13 12 11 10 ...

Page 66: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 66 ËMAIN Unit 6 9 ...

Page 67: ...LC 20B6U S 67 17 16 19 18 15 14 13 12 11 10 ...

Page 68: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 68 ËMAIN Unit 7 9 ...

Page 69: ...LC 20B6U S 69 17 16 19 18 15 14 13 12 11 10 ...

Page 70: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 70 ËMAIN Unit 8 9 ...

Page 71: ...LC 20B6U S 71 17 16 19 18 15 14 13 12 11 10 ...

Page 72: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 72 ËMAIN Unit 9 9 ...

Page 73: ...LC 20B6U S 73 17 16 19 18 15 14 13 12 11 10 ...

Page 74: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 74 ËANALOG Unit 1 3 ...

Page 75: ...LC 20B6U S 75 17 16 19 18 15 14 13 12 11 10 ...

Page 76: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 76 ËANALOG Unit 2 3 ...

Page 77: ...LC 20B6U S 77 17 16 19 18 15 14 13 12 11 10 ...

Page 78: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 78 ËANALOG Unit 3 3 ...

Page 79: ...LC 20B6U S 79 17 16 19 18 15 14 13 12 11 10 ...

Page 80: ...80 6 5 4 3 2 1 A B C D E F G H LC 20B6U S ËR C LED Unit ...

Page 81: ...050 R4053 SW4055 SW4056 C4002 R4007 IC4001 P4001 C4203 IC4201 C4201 C4202 R4006 C4001 RMC4001 SLD4001 D4005 R4001 D4004 R4002 Q4001 D4001 Q4004 D4003 R4004 R4005 D4006 D4002 Q4003 J4021 OPERATION Unit Side A QPWBXC541WJN1 OPERATION Unit Chip Parts Side A QPWBXC541WJN1 R C LED Unit Side A QPWBXC542WJN1 R C LED Unit Chip Parts Side A QPWBXC542WJN1 ...

Page 82: ...82 6 5 4 3 2 1 A B C D E F G H LC 20B6U S MAIN Unit Side A ...

Page 83: ...L701 R741 C723 T701 R760 C729 R714 R713 L706 C702 R727 C717 R742 R722 C715 TP2005 R701 R707 C710 R751 C751 C747 TP2068 Q702 D710 IC701 Q721 Q719 FB710 L705 Q717 IC707 C764 R1709 R1708 Q1704 D1706 R1710 Q1703 R1706 C1703 C1716 R1707 IC702 IC1703 R1703 R1717 C1701 R1718 R1724 C1719 R1719 R1723 Q1701 C1707 R1702 IC1704 C1702 C1708 R1704 L1702 C1706 Q1705 D1703 Q1702 D1704 C1715 R1714 C1714 D1702 R170...

Page 84: ...84 6 5 4 3 2 1 A B C D E F G H LC 20B6U S MAIN Unit Side B ...

Page 85: ...2 TL401 TL402 TL403 TL409 TL2124 TL2125 TL404 R412 TL410 TL2123 TL405 TL406 TL407 TL408 R469 R468 R411 R1264 TL1249 TL1248 TL1246 TL1244 TL1242 R1210 TL1250 TL1251 R1218 R1205 TL1247 TL1245 TL1243 D1201 TL1252 TL1253 R1216 C1242 R1206 TL1254 TL1256 C1243 Q1208 Q1206 R1213 TL1257 TL1258 TL1228 IC1204 C1244 TL1259 TL1260 Q1207 TL1229 TL1234 C1248 R1211 R1212 C1246 TL1231 C1247 TL1230 TL1239 TL1232 T...

Page 86: ...LC 20B6U S 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 86 ANALOG Unit Side A ...

Page 87: ...LC 20B6U S 87 17 16 19 18 15 14 13 12 11 10 ...

Page 88: ...05 C3306 C3365 C3309 C3308 C3262 C3261 C3244 C3346 C3361 R3343 R3344 C3243 C3364 R3205 D3202 C3217 R3226 Q3404 C3347 R3250 C3245 R3225 C3215 R3411 C3237 C3238 C3234 C3236 C3235 L3303 R3237 C3233 C3232 IC3201 C3228 L3203 R3483 C3230 R3230 R3231 R3229 R3228 C3216 R3222 C3427 C3214 C3218 FB3201 L3201 C3213 R3211 C3212 C3220 C3219 C3208 C3222 IC3205 X3201 C3202 R3220 R3202 R3371 R3204 Q3201 R3201 C320...

Page 89: ... Q3409 R3529 Q3419 R3519 R3532 R3530 C3474 D3709 Q3702 D3708 Q3701 R3466 R3492 R3493 C3310 C3210 IC3403 R3499 IC3203 R3307 C3311 C3443 C3446 C3441 R3489 R3497 R3490 R3498 C3452 C3448 P3704 Q3709 Q3710 R3722 C3707 C3708 C3711 R3723 R3726 R3727 R3725 IC3701 R3728 R3729 C3713 R3718 C3712 C3709 R3730 D3706 C3473 C3419 L3401 R3408 R3410 R3431 C3402 R3405 R3427 C3421 R3426 J3401 J3402 J3408 R3429 C3420 ...

Page 90: ...90 2100 Ref No Part No Description Code Ref No Part No Description Code PRINTED WIRING BOARD ASSEMBLYS NOT REPLACEMENT ITEM U S A CANADA DUNTKC539FE06 MAIN Unit DUNTKC540DE03 ANALOG Unit DUNTKC541DE03 OPERATION Unit DUNTKC542DE03 R C LED Unit RUNTKA087WJZZ J INVERTER Unit BP KOREA DUNTKC539FE06 MAIN Unit DUNTKC540DE06 ANALOG Unit DUNTKC541DE06 OPERATION Unit DUNTKC542DE06 R C LED Unit RUNTKA087WJZ...

Page 91: ...CNN220J2R9NY J Peaking 22µH AB L701 RCiLPA232WJZZY J Coil AE L702 RCiLPA232WJZZY J Coil AE L703 RCiLPA232WJZZY J Coil AE L704 RCiLPA232WJZZY J Coil AE L705 RCiLPA232WJZZY J Coil AE L706 RCiLPA148WJZZY J Coil AE L805 RCiLPA143WJZZY J Coil AD L809 VP 9N120KR46NY J Peaking 12µH AB L810 VP 9N120KR46NY J Peaking 12µH AB L1701 VPCKM1R2JR44NY J Peaking 1 2µH AB L1702 VPCNN470J5R4NY J Peaking 47µH AB L880...

Page 92: ... 25V Ceramic AA C860 VCEASX1CN106MY J 10 16V Electrolytic AC C861 VCKYCY1HB103KY J 0 01 50V Ceramic AA C862 VCCCCY1HH6R0DY J 6p 50V Ceramic AA C864 VCCCCY1HH6R0DY J 6p 50V Ceramic AA C865 VCKYCY1HB103KY J 0 01 50V Ceramic AA C866 VCKYCY1HB103KY J 0 01 50V Ceramic AA C867 VCKYCY1HB103KY J 0 01 50V Ceramic AA C868 VCKYCY1HB103KY J 0 01 50V Ceramic AA C869 VCKYCY1HB103KY J 0 01 50V Ceramic AA C870 VC...

Page 93: ...eramic AA C8707 VCKYCY1CB823KY J 0 082 16V Ceramic AH C8708 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C8709 VCKYCY1HB822KY J 8200p 50V Ceramic AB C8710 RC KZA101WJZZY J 10 6 3V Ceramic AC C8711 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C8712 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C8713 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C8714 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C8715 RC KZA070WJZZY J 22 6 3V Ceramic AD C8716 VC...

Page 94: ...al Oxide AA R801 VRS CJ1JF101JY J 100 1 16W Metal Oxide AA R802 VRS CY1JF000JY J 0 1 16W Metal Oxide AA R804 VRS CY1JF102JY J 1k 1 16W Metal Oxide AA R807 VRS CY1JF181JY J 180 1 16W Metal Oxide AA R809 VRS CY1JF000JY J 0 1 16W Metal Oxide AA R811 VRS CY1JF000JY J 0 1 16W Metal Oxide AA R812 VRS CY1JF821JY J 820 1 16W Metal Oxide AA R813 VRS CY1JF331JY J 330 1 16W Metal Oxide AA R814 VRS CY1JF152JY...

Page 95: ...16W Metal Oxide AA R2057 VRS CJ1JF101JY J 100 1 16W Metal Oxide AA R2058 VRS CY1JF223JY J 22k 1 16W Metal Oxide AA R2060 VRS CY1JF223JY J 22k 1 16W Metal Oxide AA R2061 VRS CJ1JF101JY J 100 1 16W Metal Oxide AA R2062 VRS CY1JF472JY J 4 7k 1 16W Metal Oxide AA R2064 VRS CY1JF472JY J 4 7k 1 16W Metal Oxide AA R2065 VRS CY1JF101JY J 100 1 16W Metal Oxide AA R2067 VRS CJ1JF392JY J 3 9k 1 16W Metal Oxi...

Page 96: ...14TK 1Y J DTC314TK AC Q3303 VS2SA1037KQ 1Y J 2SA1037KQ AA Q3401 VSDTC314TK 1Y J DTC314TK AC Q3402 VSDTC314TK 1Y J DTC314TK AC Q3403 VS2SA1037KQ 1Y J 2SA1037KQ AA Q3404 VS2SC3928AR 1Y J 2SC3928AR AB Q3406 VS2SC3928AR 1Y J 2SC3928AR AB Q3410 VSDTC314TK 1Y J DTC314TK AC Q3413 VSUMG4N 1Y J UMG4N AB Q3414 VS2SC3928AR 1Y J 2SC3928AR AB Q3419 VSiMZ1A 1Y J IMZ1A AC Q3701 VSDTC114YE 1Y J DTC114YE AB Q3709 ...

Page 97: ...ZY J 10 10V Ceramic AC C3434 VCKYCY1AB105KY J 1 10V Ceramic AB C3435 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C3436 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C3437 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C3438 VCKYCY1AB105KY J 1 10V Ceramic AB C3439 VCKYCY1AB105KY J 1 10V Ceramic AB C3440 VCKYCY1CB104KY J 0 1 16V Ceramic AB C3441 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C3443 VCKYCY1EF104ZY J 0 1 25V Ceramic AA C3444...

Page 98: ... J 0 1 16W Metal Oxide AA R3474 VRS CY1JF101JY J 100 1 16W Metal Oxide AA R3482 VRS CY1JF104JY J 100k 1 16W Metal Oxide AA R3483 VRS CY1JF102JY J 1k 1 16W Metal Oxide AA R3491 VRS TQ2BD750JY J 75 1 8W Metal Oxide AA R3492 VRS CY1JF000JY J 0 1 16W Metal Oxide AA R3494 VRS CY1JF000JY J 0 1 16W Metal Oxide AA R3496 VRS CY1JF000JY J 0 1 16W Metal Oxide AA R3497 VRS CY1JF000JY J 0 1 16W Metal Oxide AA ...

Page 99: ...0 QPLGN0563TAZZY J Plug 5 pin AC DUNTKC542DE03 U S A CANADA DUNTKC542DE06 KOREA R C LED Unit INTEGRATED CIRCUITS IC4001 VHILM70CIMM 1Y J LM70CIMMX 3 AH IC4201 VHITPS850 1Y J TPS850 AG TRANSISTORS Q4001 VSDTC144EE 1Y J DTC144EE AA Q4003 VSDTC144EE 1Y J DTC144EE AA Q4004 VSDTC144EE 1Y J DTC144EE AA DIODES D4001 RH PX0421CEZZY J POWER WAKE UP AD Indicator D4002 RH PX0421CEZZY J OPC Indicator AD CAPAC...

Page 100: ...Z J Power Button Holder AE 4 5 MSPRCA014WJFW J Spring for Power Button AB 4 6 XEBSN30P08000 J Screw x2 AA 5 Not Available 20 LCD Panel Unit Ass y 5 1 RLCDTA031WJZZ J 20 LCD Panel Unit CZ 5 2 Not Available Back Shield Ass y 5 2 1 PSLDMA448WJFW J Back Shield AW 5 2 2 LHLDZA367WJKZ J Lamp Holder Bottom Right AH 5 2 3 LHLDZA368WJKZ J Lamp Holder Bottom Left AH 5 2 4 PMLT A078WJZZ J Light Shielding Spa...

Page 101: ... 1 5 4 5 2 5 3 5 2 2 5 2 3 5 2 6 5 2 7 5 3 1 9 1 10 1 10 1 3 1 9 26 4 2 3 6 10 9 20 22 11 25 1 5 26 Operation PWB R C LED PWB 5 3 5 3 5 3 5 4 2 1 2 2 3 10 3 13 3 18 3 15 3 4 3 8 3 5 3 1 3 9 3 16 3 12 3 11 3 9 3 16 3 6 3 14 3 19 3 7 3 3 3 2 1 3 2 2 3 17 2 3 3 2 5 3 23 18 8 24 19 16 17 7 15 24 13 21 6 1 21 Inverter PWB Analog PWB Main PWB 5 15 1 14 1 13 5 11 5 14 5 10 5 14 5 13 5 12 5 9 14 12 S 5 2 ...

Page 102: ...C Unit AT TCADEA028WJN1 J Registration Card AD TiNS B253WJZZ J Operation Manual AS å UADP A065WJPZ J AC Adapter BR SPAKCB332WJZZ Packing Case SPAKFA532WJZZ Packing Material Accessories SPAKPA416WJZZ Wrapping Paper SPAKXA638WJZZ Buffer Material SSAKA0170CEZZ Polyethylene Bag SSAKA0219CEZZ Polyethylene Bag TLABK0001TAZZ No Label SERVICE JIGS USE FOR SERVICING QCNW C458WJQZ J Extension Cable 80 pin A...

Page 103: ...r UADP A065WJPZ AC Cord QACCDA037WJPA Antenna Cable QCNWG0003CEPA RGB Cable QCNWGA050WJPZ H Polyethylene Bag SSAKA0219CEZZ H AAA size Battery 2pcs R L Operation Manual TiNS B253WJZZ Cable Holder 1pc LHLDWA037WJSA Cable Clamp 1pc LHLDWA002WJSA Registration Card TCADEA028WJN1 H Polyethylene Bag SSAKA0170CEZZ H Packing Material Accessories SPAKFA532WJZZ H Not Replacement Item H No Label TLABK0001TAZZ...

Page 104: ...ansmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher SHARP CORPORATION AV Systems Group Quality Reliability Control Center Yaita Tochigi 329 2193 Japan TQ1774 S Jul 2004 Printed in Japan MI KG Design and Production Information Design Japan Production Japan ...

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