Samsung LA32C550J1R Service Manual Download Page 18

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3-1

3. Disassembly and Reassembly

3. Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the LA37C550J1R LCD TV.

WARNING:

This LCD TV contains electrostatically sensitive devices. Use caution when handling these components.

3-1. Disassembly and Reassembly

Cautions:

1. Disconnect the LCD TV from the power source before disassembly.

2. Follow these directions carefully; never use metal instruments to pry apart the cabinet.

Description

Picture Description

Screws

1. Place the TV face down on cushioned table.

Remove the screws from the Stand.

Remove stand.

O x 7

O x 4

2. Lift up rear cover and remove the stand.

Summary of Contents for LA32C550J1R

Page 1: ...the rear cover for the more information 1 Precautions 2 Product specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 Exploded View Part List 6 Wiring Diagram LA32C550J1R LA37C550J1R LA40C5...

Page 2: ...son to Old Models 2 6 2 4 Accessories 2 14 3 Disassembly and Reassembly 3 1 3 1 Disassembly and Reassembly 3 1 4 Troubleshooting 4 1 4 1 Troubleshooting 4 1 4 2 Alignments and Adjustments 4 13 4 3 Fac...

Page 3: ...rope samsungportal com China http china samsungportal com Asia http asia samsungportal com Mideast Africa http mea samsungportal com This Service Manual is a property of Samsung Electronics Co Ltd Any...

Page 4: ...5 internally terminated Input Sync Signal H V Separate TTL P or N Maximum Pixel Clock rate 310MHz Active Display Horizontal Vertical 698 4 H x 392 85 V mm AC power voltage Frequency AC 110V 240V 50 60...

Page 5: ...H V Separate TTL P or N Maximum Pixel Clock rate 310MHz Active Display Horizontal Vertical 697 685 H x 392 256 V mm AC power voltage Frequency AC 110V 240V 50 60Hz Power Consumption 160W 0 3W stand b...

Page 6: ...nal H V Separate TTL P or N Maximum Pixel Clock rate 310MHz Active Display Horizontal Vertical 819 6 H x 460 8 V mm AC power voltage Frequency AC 110V 240V 50 60Hz Power Consumption 190W 0 3W stand by...

Page 7: ...y terminated Input Sync Signal H V Separate TTL P or N Maximum Pixel Clock rate 307MHz Active Display Horizontal Vertical 885 168 H x 497 66 V mm AC power voltage Frequency AC 110V 240V 50 60Hz Power...

Page 8: ...340A BN44 00341A SPEC No Contents Adjustment Range Middle Asia Africa Middle Asia Africa Middle Asia Africa Middle Asia Africa 1 Factory Reset 2 Type NONE 19O6TH0C 32A6AF0C 32A6AF0C 37L6AF0C 40L6AF0C...

Page 9: ...255 x 622 8 mm_with stand 40 980 2 x 255 x 660 9 mm_with stand 46 1112 5 x 275 x 736 mm_with stand 32 793 9 x 240 0 x 569 7 mm_with stand 37 917 4 x 299 9 x 649 7 mm_with stand 40 982 4 x 255 0 x 675...

Page 10: ...UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF 49 75 59 25 77 25 85 25 93 25 175 25 183 25 191 25 199 25 207 25 215 25 223 25 4...

Page 11: ...25 224 25 93 25 UHF UHF UHF UHF UHF UHF UHF UHF UHF VHF VHF VHF 791 25 799 25 807 25 815 25 823 25 831 25 839 25 847 25 855 25 62 25 82 25 192 25 201 25 210 25 217 25 224 25 77 25 85 25 93 25 199 25 2...

Page 12: ...1 25 479 25 487 25 495 25 503 25 511 25 519 25 527 25 535 25 543 25 551 25 559 25 607 25 615 25 623 25 631 25 639 25 647 25 655 25 663 25 671 25 679 25 687 25 695 25 703 25 711 25 719 25 727 25 735 25...

Page 13: ...5 93 25 191 25 199 25 207 25 215 25 223 25 UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF UHF VHF V L V H V H V H VHF VHF VHF V L V L V L VHF VHF VHF 823 25 831 25 839 25 847 25 8...

Page 14: ...UHF UHF UHF UHF UHF UHF UHF UHF UHF 103 25 111 25 119 25 127 25 135 25 143 25 151 25 159 25 167 25 231 25 239 25 247 25 253 25 263 25 271 25 279 25 287 25 295 25 303 25 311 25 319 25 327 25 335 25 34...

Page 15: ...40 25 248 25 256 25 264 25 272 25 280 25 288 25 296 25 304 25 312 25 320 25 328 25 336 25 344 25 352 25 360 25 368 25 376 25 384 25 392 25 400 25 408 25 416 25 424 25 432 25 440 25 448 25 456 25 x x x...

Page 16: ...493 25 499 25 505 25 511 25 517 25 523 25 529 25 535 25 541 25 547 25 553 25 559 25 565 25 571 25 577 25 583 25 589 25 595 25 601 25 607 25 613 25 619 25 625 25 631 25 637 25 643 25 91 25 97 25 103 25...

Page 17: ...01019A BN59 01016A China Samsung Electronics Service center Cleaning Cloth BN63 01798B Owner s Instructions BN68 02739A L Power Cord 3903 000343 Warranty Card Registration Card Safety Guide Manual No...

Page 18: ...ve devices Use caution when handling these components 3 1 Disassembly and Reassembly Cautions 1 Disconnect the LCD TV from the power source before disassembly 2 Follow these directions carefully never...

Page 19: ...Description Picture Description Screws 3 Remove the left and right speaker 4 Remove Screw from the stand BRKT and lift up the stand BRKT O x 3 O x 2 5 Remove 3 screws from the Panel O x 3 6 Disonnect...

Page 20: ...sassembly and Reassembly Description Picture Description Screws 7 Remove screws and Lift up the Lod panel 8 Remove the screws on Panel Reassembly procedures are in the reverse order of disassembly pro...

Page 21: ...various cable connections first 1 Check to see if there is a burnt or damaged cable Check to see if there is a disconnected or loose cable connection Check to see if the cables are connected accordin...

Page 22: ...e following Check the internal cable connection status inside the unit Check the fuses of each part Check the output voltage of SMPS Replace the Main Board Diagnostics 2 3 3 1 Does proper DC A3 3V app...

Page 23: ...ge a PC cable Change a main PCB ass y No Does the digital data appear at the output of LVDS Cable Power Indicator is off Lamp on no video No Check a PC source and check the connection of DSUB cable IC...

Page 24: ...4 4 4 Troubleshooting WAVEFORMS PC input V sink H sink R G B LVDS output...

Page 25: ...ck the connection of HDMI cable Check a IC1201 HDMI SWITCH IC Change a main PCB ass y Check the LVDS cable Replace the LCD panel Please Contact Tech support Yes Yes Input a HDMI cable Yes Yes Yes Does...

Page 26: ...4 6 4 Troubleshooting WAVEFORMS HDMI input RX_Data RX_Clk LVDS output...

Page 27: ...cted Diagnostics 2 1 1 2 No Check a B voltage IC801 DRXK IC 3 3V 1 25V Change a main PCB ass y No No Power Indicator is off Lamp on no picure Yes Change a main PCB ass y Does the signal appeat 43 of I...

Page 28: ...4 8 4 Troubleshooting WAVEFORMS CVBS OUT Grey Bar LVDS output...

Page 29: ...the LVDS cable connecting the Main Board and the Panel is disconnected Diagnostics 1 No Check a connection harness No Power Indicator is off Lamp on no picture Yes Does the signal appear at C507 C509...

Page 30: ...4 10 4 Troubleshooting WAVEFORMS LVDS output...

Page 31: ...Side AV Check Sound Processor IC1102 SX1 No Picture is display no sound Change a DRXK IC IC801 Change a main PCB ass y No Does the signal appear at R832 R833 R834 I2S_LRCLK _I2S_BCLK _I2S_DATA of IC8...

Page 32: ...4 12 4 Troubleshooting WAVEFORMS I2S Data Speaker out...

Page 33: ...g is essential 3 Avoid overload Excessive signal from a sweep generator might overload the front end 4 of the TV When inserting signal markers do not allow the marker generator to distort test result...

Page 34: ...PICTURE ON FACTORY The buttons are active in the service mode 1 Remote Control Key Power Arrow Up Arrow Down Arrow Left Arrow Right Menu Enter Number Key 0 9 2 Function Control Key Power CH CH VOL VOL...

Page 35: ...BLU Local Set EU NONE EA_Vietnam EA_Thai EA_INA EA_China EA_lndia EA_lran EA_lsrael EA_MidAsia EA_EastAsia EA_Africa EA_Nepal ED_S_Africa Select Area Model LC530 LC350 LC450 LC450H LC451 LC452 LC457HL...

Page 36: ...T EDID WRITE DVI Sub Option Factory Name Data RANGE Use RS 232 Jack UART Debug Logic UART Select Setting of UART port Initial value is UART Watchdog ON ON OFF Select Watchdog Initial value is ON WD Co...

Page 37: ...y Name Data Range Shop Mode OFF ON OFF Exhibition Mode OFF ON OFF Sound Factory Name Data Range Use High Devi OFF ON OFF Carrier_Mute ON ON OFF Speaker Delay Normal 10 0 255 Audio delay for Lipsync Pi...

Page 38: ...ttern Sel Not modified Logic Level Sel Not modified TUNER STATUS Factory Name Factory Name Range DVB SNR Not modified BER Not modified Singal Strength Not modified Bandwidth Not modified Frequency Not...

Page 39: ...Rate_1 Not modified A_Timer InterLeave_1 Not modified A_Segments Num_1 Not modified A_Ber_1 Not modified B_Modulation_ Not modified B_Code Rate_1 Not modified B_Timer InterLeave_1 Not modified B_Segm...

Page 40: ...V_Delta 1 0 255 1st_COMP_Low 16 0 255 1st_COMP_High 235 0 255 1st_COMP_Delta 1 0 255 1st_PC_Low 2 0 255 1st_PC_High 235 0 255 1st_PC_Delta 1 0 255 2nd_Low 1 0 255 2nd_High 235 0 255 2nd_Delta 1 0 255...

Page 41: ...165 0 255 2nd_G_Gain 165 0 255 2nd_B_Gain 165 0 255 WB Factory Name Data Range Sub Brightness 128 0 255 R_Offset 128 0 255 G_Offset 128 0 255 B_Offset 128 0 255 Sub Contrast 128 0 255 R_Gain 128 0 255...

Page 42: ...1 Source HDMI 2 Setting Mode 1280 720 60Hz 3 Pattern Pattern 24 Chess Pattern Chess Pattern 4 Use Equipment CA210 Master MSPG925 Generator Use other equipment only after comparing the result with tha...

Page 43: ...te it returns to the high level menu 8 You can see the change of the Comp Calibration status from Failure to Success Method of Color Calibration PC 1 Apply the VESA XGA Lattice N0 21 pattern signal to...

Page 44: ...on to display the menu Press the or button to select Support then press the ENTER button Press the or button to select 3 SW Upgrade then press the ENTER button The message Scanning for USB It may take...

Page 45: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LA32C550J1R Exploded View F001A PANEL INVER M0115 T0175 T0175 M0014 TCON T0920 T0101 T0101 T0101 T0101 R001A M0027...

Page 46: ...A A S INVERTER LTF320HM01 LTF320HM01 1 SA M0014 BN94 03456J ASSY PCB MAIN NEW MODEL 1 SA BN61 05990B HOLDER SIDE AV 40 LC650 ABS PMMA BK0007 1 SNA M0115 BN61 06024A BRACKET STAND LINK LC550 32 SECC T1...

Page 47: ...LASS 32 LC650 GLASS T8 0 2C 1 SNA 3 T0527 BN68 01648B LABEL WARNING WW PET T0 05 40 25 EXPORT 1 SNA 3 M0126 BN73 00215A RUBBER FOOT 40LB650 RUBBER 15 25 60 4 0 4 SNA 3 M0126 BN73 00217A RUBBER FOOT LB...

Page 48: ...3711 007302 HEADER BOARD TO BOARD BOX 18P 2R 2mm ANG 1 SA 4 3721 001113 PLUG AC POWER 3P 10A 250V STRAIGHT 32 7X 1 SNA 4 BN13 00033A IC HYBRID FSFR1800US 10 40 130 9 SIP 1 SA 4 BN26 00038A TRANS PFC 3...

Page 49: ...1608 2 SA 6 AR37 2007 000104 R CHIP 150Kohm 5 1 10W TP 1608 2 SA 6 ZR24 2007 000109 R CHIP 1Mohm 5 1 10W TP 1608 1 SNA 6 KAR11 2007 000124 R CHIP 2 2Kohm 5 1 10W TP 1608 3 SNA 6 2007 000253 R CHIP 1 5...

Page 50: ...1765J DIP 8P 9 5 1 SNA 4 1405 001255 VARISTOR 615Vdc 4500A 17x8mm BK 1 SC 4 2301 002008 C FILM LEAD PEF 1000nF 5 500V TP 18 0x1 1 SA 4 2301 002009 C FILM LEAD PPF 470nF 10 275V TP 10x18x 2 SA 4 2303 0...

Page 51: ...SNA 2 6902 000609 BAG ROLL LDPE T0 05 W2400 L1000 TRP 30 0 0 06 SNA 2 BN69 00391Q PAD ANGLE T4 50 1800 YEL 400g 1 SNA 2 T0246 BN69 04323A CUSHION 01 SET 32LC550 630 650 670 EPS 1 1 SNA 2 M040 6922 00...

Page 52: ...1 SA 4 IC106 1001 001573 IC VIDEO SWITCH SiI9287BCNUTR QFN 72P 10 1 SNA 4 1006 001266 IC LINE TRANSCEIVER 3232 TSSOP 16P 174MI 1 SA 4 IC112 1103 000129 IC EEPROM 24C02 2Kbit 256x8 SOP 8P 5x4mm 2 SA 4...

Page 53: ...R1 2007 001292 R CHIP 33ohm 5 1 16W TP 1005 10 SNA 4 R326 2007 001325 R CHIP 3 3Kohm 5 1 16W TP 1005 12 SNA 4 2007 002906 R CHIP 200Kohm 1 1 10W TP 1608 4 SA 4 TR30 2007 007009 R CHIP 75ohm 5 1 16W TP...

Page 54: ...4 X202 2801 004004 CRYSTAL SMD 20 25MHz 20ppm 28 AAN 13pF 2 1 SA 4 X202 2801 004775 CRYSTAL SMD 12MHz 30ppm 16pF 30ohm TP 1 SNA 4 F103 2901 001506 FILTER EMI SMD 5V 0 13A 0pF 2x1x0 5mm TP 2 SA 4 T056...

Page 55: ...nF 10 50V X7R 1608 4 SNA 4 DC9 2203 005481 C CER CHIP 47nF 10 10V X7R TP 1005 1 SA 4 1203 005538 IC DC DC CONVERTER AOZ1021HAIL SOP 8P 4 1 SA 4 2007 007135 R CHIP 18Kohm 1 1 16W TP 1005 1 SNA 4 C711 2...

Page 56: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LA46C550J1R Exploded View F001A PANEL INVER M0174 M0014 M0115 T0175 T0175 T CON T0920 T0101 T0101 T0101 T0101 R001A M0027...

Page 57: ...A M0174 BN44 00341A IP BOARD TV PSIV281510A I46F1_ASM 14mA 1 1 SA M0014 BN94 03473P ASSY PCB MAIN NEW MODEL 1 SA BN61 05990B HOLDER SIDE AV 40 LC650 ABS PMMA BK0007 1 SNA M0115 BN61 05998A BRACKET STA...

Page 58: ...D 37 40 46 LC650 PC G F 20 V2 1 SNA 3 BN68 02766B MANUAL FLYER STAND GUIDE L550 L750 SAMSU 1 SNA 3 BN96 12031G ASSY ACCESSORY SCREW 10 LCD TV 6003 0010 1 SNA 4 M0081 6003 001003 SCREW TAPTYPE BH B M4...

Page 59: ...S B400 PAPER T5 50 1500 Y 1 SNA 2 T0246 BN69 04339A CUSHION 01 SET 46LC550 630 640 650 670 G 1 SNA 2 M040 6922 000013 BAND PP PP W18 L2300m TRP 21000g 0 71 SNA 2 BN68 02422B LABEL WARNING SHIPPING ALL...

Page 60: ...P W L SN BLK YEL WHT RED ANGLE 1 SA 3 JA333 3722 003052 JACK PIN 5P Shield W L NI SN GN BL RD WH 2 SA 3 3722 003058 JACK MODULAR 8P 8C W L Y STRAIGHT N AU 1 1 SA 3 CIS3 BN40 00173A TUNER DTOS40CVL081A...

Page 61: ...5 1 16W TP 1005 12 SNA 4 R319 2007 000143 R CHIP 4 7Kohm 5 1 16W TP 1005 53 SNA 4 2007 000146 R CHIP 6 8Kohm 5 1 16W TP 1005 2 SNA 4 R104 2007 000148 R CHIP 10Kohm 5 1 16W TP 1005 38 SNA 4 R102 2007...

Page 62: ...3 002525 C CER CHIP 0 56nF 10 50V X7R TP 1005 10 SNA 4 AAC1 2203 005249 C CER CHIP 100nF 10 50V X7R TP 1608 14 SNA 4 AD480 2203 005511 C CER CHIP 27nF 10 10V X7R TP 1005 1 SA 4 AD480 2203 005968 C CER...

Page 63: ...4 0202 001767 SOLDER CREAM LST 5710 D20 38 Sn 57Bi 1Ag 2 235 SNA 4 R945 2007 000726 R CHIP 300ohm 1 1 10W TP 1608 1 SA 4 PR12 2007 000979 R CHIP 5 6Kohm 1 1 10W TP 1608 1 SA 4 2007 001237 R CHIP 910oh...

Page 64: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LA32C550J1R Exploded View F001A PANEL INVER M0115 T0175 T0175 M0014 TCON T0920 T0101 T0101 T0101 T0101 R001A M0027...

Page 65: ...A A S INVERTER LTF320HM01 LTF320HM01 1 SA M0014 BN94 03456J ASSY PCB MAIN NEW MODEL 1 SA BN61 05990B HOLDER SIDE AV 40 LC650 ABS PMMA BK0007 1 SNA M0115 BN61 06024A BRACKET STAND LINK LC550 32 SECC T1...

Page 66: ...LASS 32 LC650 GLASS T8 0 2C 1 SNA 3 T0527 BN68 01648B LABEL WARNING WW PET T0 05 40 25 EXPORT 1 SNA 3 M0126 BN73 00215A RUBBER FOOT 40LB650 RUBBER 15 25 60 4 0 4 SNA 3 M0126 BN73 00217A RUBBER FOOT LB...

Page 67: ...3711 007302 HEADER BOARD TO BOARD BOX 18P 2R 2mm ANG 1 SA 4 3721 001113 PLUG AC POWER 3P 10A 250V STRAIGHT 32 7X 1 SNA 4 BN13 00033A IC HYBRID FSFR1800US 10 40 130 9 SIP 1 SA 4 BN26 00038A TRANS PFC 3...

Page 68: ...1608 2 SA 6 AR37 2007 000104 R CHIP 150Kohm 5 1 10W TP 1608 2 SA 6 ZR24 2007 000109 R CHIP 1Mohm 5 1 10W TP 1608 1 SNA 6 KAR11 2007 000124 R CHIP 2 2Kohm 5 1 10W TP 1608 3 SNA 6 2007 000253 R CHIP 1 5...

Page 69: ...1765J DIP 8P 9 5 1 SNA 4 1405 001255 VARISTOR 615Vdc 4500A 17x8mm BK 1 SC 4 2301 002008 C FILM LEAD PEF 1000nF 5 500V TP 18 0x1 1 SA 4 2301 002009 C FILM LEAD PPF 470nF 10 275V TP 10x18x 2 SA 4 2303 0...

Page 70: ...SNA 2 6902 000609 BAG ROLL LDPE T0 05 W2400 L1000 TRP 30 0 0 06 SNA 2 BN69 00391Q PAD ANGLE T4 50 1800 YEL 400g 1 SNA 2 T0246 BN69 04323A CUSHION 01 SET 32LC550 630 650 670 EPS 1 1 SNA 2 M040 6922 00...

Page 71: ...1 SA 4 IC106 1001 001573 IC VIDEO SWITCH SiI9287BCNUTR QFN 72P 10 1 SNA 4 1006 001266 IC LINE TRANSCEIVER 3232 TSSOP 16P 174MI 1 SA 4 IC112 1103 000129 IC EEPROM 24C02 2Kbit 256x8 SOP 8P 5x4mm 2 SA 4...

Page 72: ...R1 2007 001292 R CHIP 33ohm 5 1 16W TP 1005 10 SNA 4 R326 2007 001325 R CHIP 3 3Kohm 5 1 16W TP 1005 12 SNA 4 2007 002906 R CHIP 200Kohm 1 1 10W TP 1608 4 SA 4 TR30 2007 007009 R CHIP 75ohm 5 1 16W TP...

Page 73: ...4 X202 2801 004004 CRYSTAL SMD 20 25MHz 20ppm 28 AAN 13pF 2 1 SA 4 X202 2801 004775 CRYSTAL SMD 12MHz 30ppm 16pF 30ohm TP 1 SNA 4 F103 2901 001506 FILTER EMI SMD 5V 0 13A 0pF 2x1x0 5mm TP 2 SA 4 T056...

Page 74: ...nF 10 50V X7R 1608 4 SNA 4 DC9 2203 005481 C CER CHIP 47nF 10 10V X7R TP 1005 1 SA 4 1203 005538 IC DC DC CONVERTER AOZ1021HAIL SOP 8P 4 1 SA 4 2007 007135 R CHIP 18Kohm 1 1 16W TP 1005 1 SNA 4 C711 2...

Page 75: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram LA32 37C550...

Page 76: ...6 2 6 Wiring Diagram LA40 46C550...

Page 77: ...CLK 5 GND 11 GND 6 HDMI1_RX1 CN1101 PC SOUND 1 GND 5 PC_SL_IN 2 PC_SR_IN 6 PC_SR_IN 3 PC_SL_IN 7 PC_SR_IN 4 PC_SL_IN CN1405 SPK 1 R 3 L 2 R 4 L CN903_SU USB 1 USB VCC 3 USBP 2 0 2 USBN 2 0 4 GND CN705...

Page 78: ...2 MON_R_OUT 6 NC 3 MON_L_OUT 7 NC 4 NC CN702 COMP_AV SOUND 1 GND 4 GND 2 COMP1_AV1_SR_IN 5 COMP1_AV1_SL_IN 3 COMP1_AV1_SL_IN 6 COMP1_AV1_SR_IN CN701 COMP1_AV1 1 GND 6 COMP1_PB 2 IDENT_AV1 7 GND 3 COM...

Page 79: ...6 5 6 Wiring Diagram 6 3 Wiring Picture...

Page 80: ...symptom abnormal Picture CN1405 SPEAKER Connection Main Board and Speaker defective symptom No picture CN301 Function IR Connection Main Board and Function IR Assy defective symptom No picture diable...

Page 81: ...32 BN39 01267C 37 BN39 01267E 40 BN39 01267F 46 BN96 12871A 32 BN96 12871B 37 BN96 12837A 40 BN96 12837B 46 Photo Use 4 IR to FUNCTION 5 CONNECTOR INVERTOR 32 37 5 CONNECTOR INVERTOR 40 46 Code BN96...

Page 82: ...an National Standards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL Publication UL1410 59 7 With the unit completely reassembled plug the AC line cord directly...

Page 83: ...strument s ground lead last 1 3 Electrostatically Sensitive Devices ESD Precautions Some semiconductor solid state devices can be easily damaged by static electricity Such components are commonly call...

Page 84: ...t from being exposed 4 to moisture Otherwise it may cause a fire or electric shock Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product Also check...

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