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Tatung D556T, Руководство по обслуживанию

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Tatung D556T Скачать руководство пользователя страница 13

 

 

13 

2.ABNORMAL VIDEO LEVEL ON SCREEN 

 
 

OK

NG

OK

NG

NG

OK

OK

CHECK THE VOLTAGE OF IC801 

CHECK THE SIGNAL INPUT OF  R.G.B.

ABOUT 0.7Vpp

CHECK THE VIDEO OUTPUT OF IC801

R.G.B. APPROACH STANDARD

CHECK SIGNAL CABLE OR 

INTERFACE CARD.

CHECK THE RELATIVE CIRCUIT 

CHECK IC801 PIN 11 ABOUT 10Vpp

PIN 13, 15, 18 ABOUT 3Vpp

PIN 2, 16 ABOUT 8V

CHECK 8V RELATIVE CIRCUIT

OF CLAMP.

CHECK IC801

 

 
 

3. ABNORMAL DDC (PLUG & PLAY) 

 
 

OK

NG

CHECK IC101 PIN 5 VOLTAGE ABOUT 5V

CHECK SIGNAL CABLE

CHECK IC102 GOOD OR FAIL

 

 
 
 
 
 

Содержание D556T

Страница 1: ...SERVICE MANUAL COLOR MONITOR VM5ERDA D556T ...

Страница 2: ...UBLE SHOOTING CHART 12 6 1 NO RASTER CRT RELATIVE CIRCUIT PROBLEMS 12 13 6 2 ABNORMAL DISPLAY 14 6 3 NO BLANKING 15 6 4 HOR OSC DEF HV CIRCUIT FAULT 15 6 5 ABNORMAL HORIZONTAL DEFLECTION 16 6 6 ABNORMAL VERTICAL SCANNING 17 6 7 SIDE PIN CUSHION DISTORTION 18 6 8 POOR FOCUS 18 6 9 NO SOUND FOR AUDIO ONLY 18 6 10 POWER SUPPLY TROUBLE SHOOTING CHART 19 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY 20 8 ...

Страница 3: ...el TTL Level TTL Level TTL Level Negative Negative Negative Positive Negative Vert Sync TTL Level TTL Level TTL Level TTL Level TTL Level Positive Negative Negative Positive Negative 6 Resolution Horizontal 720 H 640 H 640 H 800 H 1024 H Vertical 400 V 480 V 480 V 600 V 768 V Fh KHz 31 5 31 5 43 3 53 7 48 4 Fv Hz 70 60 85 85 60 7 Display Size Horizontal 260 mm Vertical 195 mm 8 Scanning Frequencie...

Страница 4: ...Gross 16 Dimensions Monitor Carton 460 W X 425 H X 494 D mm Monitor 360 W X 364 H X 385 D mm 17 External Connection 15 Pin D type Connector AC Power Cord 18 Speaker for 5EA 5EnA 5ElrA only Rate power 1W Impedance 16 19 Regulations UL CSA FCC TÜV GS CE MPR II for 5Elr 5ElrA only ...

Страница 5: ...er volt or with more sensitivity in the following manner Connect a 1500 ohms 10 Watt resistor paralleled by a 0 15UF AC type capacitor between a known good earth ground water pipe conduit etc and the exposed metallic parts simultaneously Measure the AC voltage across the combination of 1500 ohms resistor and 0 15UF capacitor c Reverse the AC plug at the AC outlet and repeat AC voltage measurements...

Страница 6: ...pply It is important to maintain specified values of all components in the horizontal and high voltage circuits and anywhere else in the monitor that could cause a rise in high voltage or operating supply voltages No changes should be made to the original design of the monitor Components shown in the shaded areas on the schematic should be replaced with exact factory replacement parts The use of u...

Страница 7: ...s on the connector to ensure firm grounding The connector information is as follow 15 Pin Color Display Signal Cable PIN NO DESCRIPTION PIN NO DESCRIPTION 1 RED 9 NC 2 GREEN 10 GND 3 BLUE 11 SYNC GND 4 GND 12 SDA 5 GND 13 HORIZ SYNC 6 GND R 14 VERT SYNC VCLK 7 GND G 15 SCL 8 GND B 3 Apply power to the display by turning the power switch to the ON position and allow about thirty seconds for display...

Страница 8: ...ll light up for a while then extinguish C Then you can select one of the eight functions including Contrast Brightness H SIZE H CENTER V SIZE V CENTER Pincushion and Trapezoid Simply press the function key and the LED will be light up corresponding to the one selected then press the up down keys to get the factory presetting parameter value to your satisfaction D Then you will press the up functio...

Страница 9: ...tion but at the same time to obtain the same angle between the two tabs which should be approximately 180 D Check the complete blue and complete green patterns to observe their respective color purity make minor adjustments if needed RELATIVE PLACEMENT OF TYPICAL COMPONENTS Purity Magnets Deflection Yoke 4 pole Convergence Magnets 6 pole Convergence Magnets 6 Convergence adjustment A Produce a mag...

Страница 10: ... 3 VIDEO CIRCUIT IC801 is a video amplifier clamping signal input from pin No 11 to restore the DC voltage of video signal the signal output from IC801 pass through IC802 Video package amplifier stage LM2438 then go to the cut off DC restore stage The video output signal is about 40Vpp 5 4 POWER SUPPLY The design uses a discontinuous flyback topology operating in current mode resulting in a multip...

Страница 11: ...07 Q908 Use for Off Mode to Cut off 6 3V Supply Voltage Q909 Q910 Use for Standy By or Suspend Mode to Cut off 15V Supply Voltage Q912 Q920 Push Pull Topology to Drive Q911 Q401 Turn on at Power ON OFF and Change Mode to Protect Hor Block Q402 HOR Driver Transistor Q407 Q408 As a Switcher for H Size Correction CKT Q410 Q426 H Size Corection Mosfet Q404 Q405 As Differential Amp to Drive Q406 Q406 D...

Страница 12: ...GE OF CRT HEATER ABOUT 6 3V CHECK VOLTAGE OF THE CRT CHECK BRIGHTNESS CIRCUIT CHECK POWER SAVING CIRCUIT ABNORMAL DISPLAY CHECK FBT D706 R723 C713 Q703 Q704 Q705 RELATIVE CKT REFER ITEM 6 2 CATHODE ABOUT 60V TO 70V CHECK MAIN PC BOARD CHECK SCREEN VOLTAGE ABOUT 400V TO 600V OF CRT ABOUT 23 5KV 25KV Q909 Q910 RELATIVE CIRCUIT Q907 Q908 CHECK CRT S HEATER 88V 12V CHECK FAILSAFE CKT Q402 Q403 RELATIV...

Страница 13: ... VIDEO OUTPUT OF IC801 R G B APPROACH STANDARD CHECK SIGNAL CABLE OR INTERFACE CARD CHECK THE RELATIVE CIRCUIT CHECK IC801 PIN 11 ABOUT 10Vpp PIN 13 15 18 ABOUT 3Vpp PIN 2 16 ABOUT 8V CHECK 8V RELATIVE CIRCUIT OF CLAMP CHECK IC801 3 ABNORMAL DDC PLUG PLAY OK NG CHECK IC101 PIN 5 VOLTAGE ABOUT 5V CHECK SIGNAL CABLE CHECK IC102 GOOD OR FAIL ...

Страница 14: ...HECK THE VOLTAGE OF CRT CATHODE ABOUT 40Vpp CHECK THE VOLTAGE OF FBT SCREEN ABOUT 400 TO 600V CHECK THE RELATIVE CIRCUIT CHECK THE 12V PIN OF SMPS ON MAIN PCB RELATIVE CIRCUIT OF P802 CONNECTOR OF IC801 PIN 13 15 18 ABOUT 3Vpp CHECK THE 80V RELATIVE CIRCUIT CHECK VIDEO IC VCC ABOUT 8V VIDEO PCB ABOUT 75V CHECK THE IC802 OF IC801 CHECK CRT RELATIVE CIRCUIT OR REFER ITEM 6 1 ...

Страница 15: ...IT FAULT 1 NO RASTER DISCONNECT WITH SIGNAL CABLE NG OK OK OK NG NG NG CHECK THE COLLECTOR VOLTAGE CHECK THE COLLECTOR VOLTAGE RELATIVE CIRCUIT RELATIVE CIRCUIT OF Q402 ABOUT 30Vpp CHECK Q402 T401 CHECK T401 T402 Q402 Q403 OF Q403 ABOUT 1250Vpp AT FH 31KHz D408 C418 C419 H DY B CHECK IC401 PIN 4 7 PIN 13 CHECK IC401 PIN 29 ABOUT 11 5 VDC CHECK IC401 PIN 26 WAVE FORM ABOUT 11 5Vpp CHECK IC401 PIN 2...

Страница 16: ...LTAGE ABOUT OF Q404 Q405 Q406 CHECK THE HV OF CRT ABOUT 24 5KV READJUST H SIZE FUNCTION 88V AT FH 31KHz 2 ABNORMAL HORIZONTAL RASTER CENTER CHECK D418 D419 R457 R458 L404 3 ABNORMAL HORIZONTAL VIDEO CENTER RELATIVE CIRCUIT NG SET H CENTER TO CENTER CHECK IC401 PIN 4 7 4 ABNORMAL HORIZONTAL LINEARITY CHECK L401 Q407 Q408 Q410 DY IC101 PIN 28 CSO ...

Страница 17: ...UE READJUST V SIZE FUNCTION VALUE CHECK VERT OSC CIRCUIT RELATIVE CIRCUIT CHECK THE VOLTAGE OF IC101 NG RELATIVE CIRCUIT CHECK THE IC601 ABOUT 11 8V PIN 6 CHECK D601 C606 RELATIVE CIRCUIT CHECK IC401 PIN 20 21 22 23 2 VERTICAL CENTER READJUST V CENTER FUNCTION VALUE NG CHECK IC401 IC601 RELATIVE CKT ...

Страница 18: ... READJUST FOCUS CONTROL NG CHECK FOCUS CONTROL UNIT FOCUS LEAD WIRE CRT SOCKET CRT 6 9 NO SOUND FOR 5EA 5ElrA ONLY OK OK OK OK NG ENSURE THE SOUND SOURCE IS POWER ON ENSURE THE SOURCE CABLE CONNECTION CHECK POWER CHECK IC501 IC501 FAILURE SPEAKER FAILURE OK SUPPLY CIRCUIT ADJUST VOLUME CONTROL NG CHECK IC501 PIN 12 ABOUT 14V ...

Страница 19: ...LE OUTPUT NG OK NG OK OK NG NG NG OK OK OK NG OK NG YES NO CHECK BRIDGE RECTIFIED CIRCUIT 6 3V CIRCUIT CHECK START C K T IT SHALL BE 11 5V R923 R924 CHECK IC401 H OSC SEE ITEM 1 CHECK D919 CHECK Q911 Q911 FAILURE CHECK IC401 29 CHECK Q901 CHECK IC901 CHECK AC LINE VOLT 120V OR 220V CHECK F901 SW901 CHECK LINE RECTIFIED SMOOTHED VOLT CHECK Q901 IC901 FAILURE CHECK T901 O P MAKE SURE THAT THE VARIAB...

Страница 20: ...20 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...

Страница 21: ...581 26 704 SHIPPING LABEL 40A 2031 615 5A ID LABEL 41A 68 508 A CARD 41A 68 563 WARRANTY CARD 41A 68 576 WARRANTY CARD 41A 553 615 1A OWNER S MANUAL 44A 3121 510 PU FOAM 44A 3191 615 6A CARTON 44A 6547 1 EPS FOAM 44A 6547 2 EPS FOAM 45A 76 28 RN PE BAG 45A 77 500 BARCODE RIBBON 45A 77 501 BARCODE RIBBON 45A 88 7 RN PE BAG 71A 303 9 C SPPILER 85A 568 1 SHIELD 89A 402A 12N IS POWER CORD UL CSA 95A 9...

Страница 22: ...550 5PS 15 CRT ASS Y 750A 5910 550 AGS 15 CPT CRT ASS Y GND2 95A 205 30 102 WIRE ASS Y LED1 81A 10 2 SA POWER LED SW101 77A 602 1 HJ TSVB 3B TACT SWITCH SW102 77A 602 1 HJ TSVB 3B TACT SWITCH SW103 77A 602 1 HJ TSVB 3B TACT SWITCH C414 67A 305 470 9 47uF 20 100V C419 63A 210J 532 8FC 5300PF 2KV C422 63A 210J 684 2CH 0 68UF 250V C425 63A 210J 274 3CC 0 27uF 5 400V C427 63A 210J 394 3CC 0 39uF 5 400...

Страница 23: ...J LED4 81A 2 3 2B LED GREEN BL B2441J LED5 81A 2 3 2B LED GREEN BL B2441J LED6 81A 2 3 2B LED GREEN BL B2441J LED7 81A 2 3 2B LED GREEN BL B2441J LED8 81A 2 3 2B LED GREEN BL B2441J LED9 81A 2 3 2B LED GREEN BL B2441J P402 33A 3192 4 4 P PLUG P403 33A 8009 3 3 P PLUG NR901 61A 58 8 NTCR 15 OHM PR901 61A 52 27 5W PTCR 14 OHM Q402 57A 706 2 T 2N7000 Q410 57A 600 503 IRF630A Q426 57A 600 503 IRF630A ...

Страница 24: ... Y5V 50V C407 65A 444 101 5T 100 PF 10 50V Y5P C408 65A 444 101 5T 100 PF 10 50V Y5P C412 65A 442 221 1T 220PF 5 50V C413 65A 450 104 7T 0 1uF 80 20 Y5V 50V C415 64A 44J 102 1AT 1000PF 100V C417 64A 176J 154 0T 0 15uF 5 63 50V C421 65A 1K 102 5T 1NF 1KV 10 C423 65A 444 332 5T 3300 PF 10 50V Y5P C429 65A 444 332 5T 3300 PF 10 50V Y5P C433 67A 309 100 7T 10uF 20 50V C434 67A 309 220 7T 22uF 20 50V C...

Страница 25: ... 50V C946 63A 212J 104 2AT 0 1uF 5 250V C947 67A 309 479 7T 4 7uF 20 50V C950 65A 1K 221 5T 220PF 10 1KV C955 65A 1K 221 5T 220PF 10 1KV C961 64A 44J 103 1AT 0 01uF 5 100V C965 64A 44J 103 1AT 0 01uF 5 100V C966 67A 309 470 4T 47uF 20 25V C995 64A 44J 472 1AT 4700pF 100V D101 93A 64 11 52T DIODE IN4148 D102 93A 64 11 52T DIODE IN4148 D103 93A 64 11 52T DIODE IN4148 D104 93A 64 11 52T DIODE IN4148 ...

Страница 26: ... 23 TIN COATED FB907 71A 55 9 T SHIELD BEAD J001 95A 90 23 TIN COATED J002 95A 90 23 TIN COATED J003 95A 90 23 TIN COATED J004 95A 90 23 TIN COATED J005 95A 90 23 TIN COATED J006 95A 90 23 TIN COATED J007 95A 90 23 TIN COATED J009 95A 90 23 TIN COATED J010 95A 90 23 TIN COATED J011 95A 90 23 TIN COATED J013 95A 90 23 TIN COATED J014 95A 90 23 TIN COATED J015 95A 90 23 TIN COATED J016 95A 90 23 TIN...

Страница 27: ...COATED J080 95A 90 23 TIN COATED J081 95A 90 23 TIN COATED J082 95A 90 23 TIN COATED J084 95A 90 23 TIN COATED J085 95A 90 23 TIN COATED J087 95A 90 23 TIN COATED J088 95A 90 23 TIN COATED J089 95A 90 23 TIN COATED J090 95A 90 23 TIN COATED J094 95A 90 23 TIN COATED J096 95A 90 23 TIN COATED J097 95A 90 23 TIN COATED J098 95A 90 23 TIN COATED J099 95A 90 23 TIN COATED J100 95A 90 23 TIN COATED L10...

Страница 28: ... 602 103 52T 10K OHM 5 1 6W R157 61A 602 103 52T 10K OHM 5 1 6W R160 61A 602 221 52T 220 OHM 5 1 6W R161 61A 602 222 52T 2 2K OHM 5 1 6W R162 61A 602 102 52T 1K OHM 5 1 6W R165 61A 602 222 52T 2 2K OHM 5 1 6W R166 61A 602 681 52T 680 OHM 5 1 6W R180 61A 602 362 52T 3 6K OHM 5 1 6W R185 61A 602 102 52T 1K OHM 5 1 6W R402 61A 602 222 52T 2 2K OHM 5 1 6W R403 61A 602 101 52T 100 OHM 5 1 6W R404 61A 6...

Страница 29: ...OHM 5 1 6W R709 61A 602 103 52T 10K OHM 5 1 6W R710 61A 602 103 52T 10K OHM 5 1 6W R711 61A 602 103 52T 10K OHM 5 1 6W R712 61A 602 273 52T 27K OHM 5 1 6W R713 61A 602 562 52T 5 6K OHM 5 1 6W R715 61A 602 103 52T 10K OHM 5 1 6W R720 61A 175L 104 52T 100K OHM 5 1 2W R721 61A 175L 102 52T 1K OHM 5 1 2W R722 61A 602 332 52T 3 3K OHM 5 1 6W R725 61A 204 154 52T 150K OHM 5 1 2W R726 61A 602 102 52T 1K ...

Страница 30: ...1 6W R995 61A 602 393 52T 39K OHM 5 1 6W R996 61A 602 103 52T 10K OHM 5 1 6W ZD110 93A 39 73 52T HZ6B1 ZD403 93A 39 54 52T HZ12B2 ZD404 95A 90 23 TIN COATED ZD420 93A 39 522 52T TZX20B ZD701 93A 39 518 52T TZX8V2A ZD702 93A 39 515 52T TZX3V0C ZD903 93A 39 124 52T ZD 18 2 ZD940 93A 39 517 52T TZX6V2C ZD941 93A 39 517 52T TZX6V2C PARTS LIST OF CRT PC BOARD LOCATION RAI550S SPECIFICATION RAI550S CRT ...

Страница 31: ...0PF 1KV 10 C838 95A 90 23 TIN COATED C840 65A 517K 102 5T 1000PF 500V 10 C841 65A 517K 102 5T 1000PF 500V 10 C842 65A 517K 102 5T 1000PF 500V 10 C861 65A 517M 103 3T 10NF 500V 20 D801 93A 64 11 26T DIODE IN4148 D802 93A 64 11 26T DIODE IN4148 D803 93A 64 11 26T DIODE IN4148 D804 93A 64 11 26T DIODE IN4148 D805 93A 64 11 26T DIODE IN4148 D806 93A 64 11 26T DIODE IN4148 D807 93A 64 11 26T DIODE IN41...

Страница 32: ...91 26T 390 OHM 5 1 6W R817 61A 602 391 26T 390 OHM 5 1 6W R818 61A 602 100 26T 10 OHM 5 1 6W R819 61A 602 100 26T 10 OHM 5 1 6W R820 61A 602 100 26T 10 OHM 5 1 6W R821 95A 90 23 TIN COATED R823 61A 602 910 26T 91 OHM 5 1 6W R824 61A 602 910 26T 91 OHM 5 1 6W R825 61A 602 910 26T 91 OHM 5 1 6W R826 61A 172 681 52T 680 OHM 5 1 4W R840 61A 172 102 26T 1K OHM 5 1 4W R841 61A 172 102 26T 1K OHM 5 1 4W ...

Страница 33: ...220 12 FMP 2FUR 1500 600V 5A Q403 57A 689 6 2SC5297 Q406 57A 415 500 TIP122 PARTS LIST OF Q901 ASS Y LOCATION PARTS No SPECIFICATION 5A 42 501 NYLON WASHER 12A 372 1 SILICONE RUBBER 90A 339 2 A HEAT SINK M1A 1730 10 128 SCREW Q901 57A 667 7 IRFBC40 I R MOSFET PARTS LIST OF AC LINET ASS Y LOCATION PARTS No SPECIFICATION CN901 95A 205S 354 023 WIRE CORE ASS Y 96A 29 6 190 H S TUBING 87A 501 5 RECEPT...

Страница 34: ...L SWIVEL 34A 734 Y L BASE 45A 76 31 RN PE BAG PARTS LIST OF CRT ALTERNATION LOCATION PARTS No SPECIFICATION 750A 5910 5PS 15 CRT C418 63A 210J 432 8FC 0 0043UF 5 2000V P404 33A 8009 3 3P PLUG R414 61A 602 272 52T 2 7K OHM 5 1 6W R461 61A 153M 151 59 150 OHM 5 3W R470 61A 602 912 52T 9 1K OHM 5 1 6W R490 61A 210 473 52T 47K OHM 1 1 6W LOCATION PARTS No SPECIFICATION 750A 5910 5AG 15 CRT C418 63A 21...

Страница 35: ...404 Q405 Q406 Q909 Q910 Q907 Q908 IC401 LED CONTROL IC801 Q403 T402 FBT Q402 T401 Q601 Q707 IC601 EHT VERT HOR OSC HOR O P G1 G2 FOCUS PRE AMP HOR DRIVER X RAY PROTECTION PINCUSHION VERT O P CONTROL 25KV FUNCTION KEY H V BLANKING CIRCUIT H SIZE CONTROL SAVING POWER HV IC101 UP DOWN CRT B G R B G R CABLE SIGNAL ...

Страница 36: ...5V L906 R929 90V 264V Q911 OUTPUT OUTPUTS B VARIABLE MOSFET POWER VARI SMOOTHED SMOOTHED RECTIFIED RECTIFIED OUTPUTS 4 CONTROL H O T FROM C K T H SYNC H SYNC Is O P F B VCC MOSFET POWER Q901 8 3 6 2 7 IC901 PWM O P CONTROL C K T START AC INPUT FILTER LINE SWITCH ON OFF POWER C K T DEGAUSSING VIN SMOOTHED SMOOTHED RECTIFIED RECTIFIED TRANSFORMER TRANSFORMER POWER ...

Страница 37: ... LED2 UP KEY LED3 DOWN KEY LED4 SELECT LED5 LED6 LED7 LED8 LED9 KEY SELECT SENSE STAND BY SUSPEND WRITE PROTECT SDA SCL OSC1 OSC0 GND VCC RESET_ CONTRAST BRIGHT 22 21 20 19 23 24 18 17 25 26 27 16 15 14 28 29 13 12 30 31 11 10 32 9 33 34 8 7 35 36 6 5 37 4 38 39 40 3 1 2 IC101 4 3 2 5 6 7 8 9 IC802 Vout 1 Vout 2 Vout 3 VCC GND Vin 3 Vin 2 VBB Vin 1 1 ...

Страница 38: ... VCC SCL SDA 6 5 WP 7 R W CONTROL SENSE AMP YDEC XDEC PAGE LATCHES 128X8 EEPROM ARRAY MEMORY LOGIC LOGIC CONTROL CONTROL I O IC102 24C04 IC901 3842 VCC GND O P Ct Rt Is COMP F B Vref 8 2 1 3 4 6 5 7 U V L O 36V 1V 1 2 Vref OSCILLATOR LATCH PWM S R COMP C S 1 3 AMP ERR LOGLC RESET SET Vref 5V BIAS INTERNAL ...

Страница 39: ...MOIRE 23 7 bits VAMP 18 TRACKING GEOMETRY 2 2 X X X X X X 7bits Spin Bal 7 bits VPOS 20 22 7 bits 7 bits RAMP GENERATOR DSCILLATOR VERTICAL CORRECTION S AND C 21 13 Vref Vref 32 27 30 31 2 I C INTERFACE RESET GENERATOR HFLY VSYNC 3 7BITS ON OFF GENERATOR HORIZONTAL MOIRE 2 1 16 15 28 14 7bits Reference lntemal CONTROLLER B 17 19 11 25 29 PROCESSOR SAFETY 26 7 8 6 5 12 4 BUFFER HOUT 7 bits H DUTY S...

Страница 40: ...40 11 PCB LAYOUT 11 1 MAIN PCB LAYOUT ...

Страница 41: ...41 11 2 CRT BOARD LAYOUT ...

Страница 42: ...02 IC501 R824 R414 R408 R614 R823 R815 R820 C404 R816 D411 R819 R430 R421 C609 R610 R611 R127 J075 R817 R818 C913 R973 H802 R420 R419 C818 C819 C961 D130 C820 C813 C812 C814 C815 C816 VR801 VR802 R814 R812 R811 R813 R944 R810 D940 R947 ZD940 R946 C611 R145 R130 C809 C808 ZD801 R807 L801 D807 R809 R808 Q401 C807 C803 D805 D806 R806 C806 C805 R805 D804 D803 C802 R804 R945 R415 R409 C448 D802 D801 C8...

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