Daewoo DV4K611DZ-T Service Manual
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Daewoo DV4K611DZ-T Service Manual

Daewoo DV4K611DZ-T Service Manual

Time lapse vcr
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S/M No. : VKE611DEN0
Service Manual
TIME LAPSE VCR
Model: DV4K611DZ-T
 Caution
: In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).
DAEWOO ELECTRONICS Corp.
http : //svc.dwe.co.kr
Oct. 2003

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Summary of Contents for Daewoo DV4K611DZ-T

  • Page 1 S/M No. : VKE611DEN0 Service Manual TIME LAPSE VCR Model: DV4K611DZ-T  Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr).

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SAFETY&PRECAUTIONS ....................2 EXTERNAL VIEWS ......................4 FRONT VIEWS FUNCTION ........................4 REAR VIEWS FUNCTION ........................5 ELECTRICAL ADJUSTMENT ................... 6 SPECIFICATIONS ....................... 7 TIMELAPSE REC/PB SPEED CHART ................9 CIRCUIT OPERATION ....................10 RS-232C ........................15 TROUBLE SHOOTING FLOW CHART ................27 POWER CIRCUIT ..........................27 SERVO-SYSCON CIRCUIT ........................29 u-COM PORT DESCRIPTION ..................

  • Page 3: Safety&Precautions

    SAFETY&PRECAUTIONS SAFETY CHECK AFTER SERVING Examine the area surrounding the repaired location for damage or deterioration. Observe that screw, parts and wires have been returned to original positions. Afterwards, perform the following tests and con- form the specified values in order to verify compliance with safety standards. 1.
  • Page 4 SAFETY&PRECAUTIONS 4. Leakage current test Confirm specified or lower leakage current between B(earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna termi- nals, video and audio input output terminals, microphone jacks, earphone jacks, etc.) Measuring method:(Power ON) Insert load Z between B(earth ground, power cord plug prongs) and exposed accessible parts.

  • Page 5: External Views

    EXTERNAL VIEWS 1. FRONT VIEWS FUNCTION 1) EJECT button 13) SHIFT( ) / TRACKING (-) button 2) REC button 14) SHIFT( ) / TRACKING (-) button 3) POWER button 15) REC/PLAY SPEED ( ) button (SET - button) 4) AUDIO ON button 16) REC/PLAY SPEED ( ) button (SET + button) 5) PAUSE button...

  • Page 6: Rear Views Function

    EXTERNAL VIEWS 2. REAR VIEWS FUNCTION 1)ALARM 2(ALARM Input) terminal 13)VIDEO OUT jack 2)ALARM 3(ALARM Input) terminal 14)VIDEO IN jack 3)WARNING OUT terminal 15)AUDIO IN jack 4)SERIES IN terminal 16)AUDIO OUT jack 5)COM terminal 17)MIC (microphone input) jack 6)SERIES OUT terminal 18)REMOTE IN jack 7)SW OUT terminal 19)RS-232C jack...

  • Page 7: Electrical Adjustment

    ELECTRICAL ADJUSTMENT 1. SERVO/SYSCON CIRCUIT ADJUSTMENT METHOD v VIDEO HEAD SWITCHING POSITION Adjustment Part Checking Point Measuring Equipment Mode Test Tape TJ396 R595 OSCILLOSCOPE Play DN-1 (Color Bar) PT501 PIN3 v CONNECTION METHOD TJ396 CH-1 Oscilloscope CH-2 R595 PT501 v ADJUSTMENT PROCEDURE 1) Play back the test tape.

  • Page 8: Specifications

    SPECIFICATIONS-I 24Hours & 40Hours Real Time Record Mode with T-160 (20 field-per second with T-160 Tape) Tape 8000Hour Lifetime gnarantee Ball Bearing CAPSTAN MOTOR Mounting DIGITAL SHUTTLE function( REVERSE PLAY & REVERSE SLOW) RS-232C COMMUNICATION PC INTERFACE Up-to 1280 Hours Recording (T-160 Tape) Super Clear Picture - Over 300 Lines Horizontal Resolution(B/W) - Over 250 Lines Horizontal Resolution(Color)
  • Page 9 SPECIFICATIONS-II Video Signal system REC/PB System Helical scanning system Tape Width 12.65mm (1/2 inch), VHS Record system of Luminance Signal Frequency modulation record Record system of Color Signal Down converted subcarrier phase shift system 3H : 23.39mm/s(SP) , 6H : 11.69mm/s(LP) , Tape Speed (E-180) 18H : 3.89mm/s(LP), 30H : 2.33mm/s(LP) Record/Play Time (E-180)

  • Page 10: Timelapse Rec/Pb Speed Chart

    TIMELAPSE REC/PB SPEED CHART TAPE MODE TAPE SPEED REMARK 120H 168H 240H 360H 480H 720H 960H E-180 MODE 128H 160H 224H 320H 480H 640H 960H 1280H E-240 120H 168H 240H 360H 480H 720H 960H E-180 PLAY MODE 128H 160H 224H 320H 480H 640H...

  • Page 11: Circuit Operation

    1. SERVO SYSCON PART 1-1) BLOCK DIAGRAM LOADING CAPSTAN DRUM CAM DRIVE SPEED CTL PG FG AMP Start end IC501 SENSOR M37775M5H & u-COM REEL PROCESSOR SENSOR BACK OSC& UP BATT RESET AUDIO TERMINAL VIDEO BLOCK BLOCK BLOCK <DV4K611DZ-T SERVO SYSCON BLOCK>...
  • Page 12 CIRCUIT OPERATION 1-2) TIME LAPSE RECORDING METHOD The numbers of VHS 2HOUR (SP), 6HOUR (LP) REC FIELD are 50 field/sec, then it will be 1FRAME = 33.3Ms, 1FIELD = 16.65Ms. CAPSTAN MOTOR FG numbers for Time Lapse are 6HOUR(EP) = 720 numbers/sec, 3HOUR(SP) = 720*3=2160 numbers/sec.
  • Page 13 CIRCUIT OPERATION 1-3) TERMINAL PART ALARM INPUT Connect DOOR SW&SENSOR etc and this port will be used for emergency recording by using open/ close status. N/O(NORMALY OPEN) 500ms N/C(NORMALY CLOSED) 500ms ALARM OUTPUT This port is always triggered during ALARM REC, which is used to inform the outside that time lapse VCR is now performing Alarm Recording.
  • Page 14 CIRCUIT OPERATION TAPE END OUT When the recording tape ends during recording, end sensor will be detected. This port is used Alarm to outsider until release the end sensor detecting. END Detect END Detect HIGH SW OUTPUT This port is used triggering video signal with external equipment during recording. VIDEO SIGNAL 20ms...
  • Page 15 CIRCUIT OPERATION SERIES INPUT When the series recording proceeds after setting the series recording to “on”, this port is used to receive the control signal to the set which will be recorded continuously after pre-recording set. 200ms WARNING OUTPUT This port is used to inform emergency status of Time Lapse VCR Set to outsider. EMERGENCY status term HIGH...

  • Page 16: Rs-232C

    RS-232C INTERFACE(RS-232C) 9-pin connector layout Pin number Signal Operation Signal direction Receive data VCR Computer Send data VCR Computer Request to send VCR Computer Signal ground • The signal transmission is compatible with RS-232C specifications. VCR pin number Computer pin number •...
  • Page 17 RS-232C SECUNET SW INSTALLATION 1. This will install SECUNET on your computer. It is recommended that you exit all other programs before proceed with installation. Click <Next> to continue installation. Or, click <Cancel> to cancel installation.
  • Page 18 RS-232C 2. This will be installed to following folder. Click <Install> to begin installation to following folder. To install to a different folder, Either enter install path, Or, click <Browse> and select another folder. space needed: 3,915bytes.
  • Page 19 RS-232C 3. Update your file in the screen above and click <Yes>, 4. To complete installation, system must be restarted. Click<Yes>.
  • Page 20 RS-232C 5. Click <Confirm>. Connect TimeLapse VCR with PC Necessary articles • 232C Serial Cable (9 pin) • Personal Computer • TimeLapse VCR How to connect • Connect 232C Serial Cable to Com1 of Personal Computer . Problem & Solution If the communication Press RESET button of this set and speed of this set isn’...
  • Page 21 RS-232C FUNCTIONS On a screen below, you can control normal operation with remote control. The explanation of the display for each function 1 Title Input Field The character or number which is input in VCR menu is displayed on your PC by RS-232C Communication. 2 Rec speed or Play speed Rec speed is displayed at usual.
  • Page 22 RS-232C COMMUNICATIONS SPEED SETTING 1. You can change RS232C communication speed by pressing down menu of setting in above screen. 2. On screen above, click<SETTING> with mouse. Then “ SET” will appea. Click <SET>, so you can control various communication speed like step3.
  • Page 23 RS-232C click <OK>. Set the ‘ S PEED and COMPORT’ on small window and Then you can see the changed communication speed and comport. * The communication speed of VCR and Computer is fixed to 9600bps at default value. * The communication comport of Computer is fixed to COM1 at default value. 4.
  • Page 24 RS-232C RS-232C Serial commuication Command & Status. 1.command KEY NAME KEY DATA DESCRIPTION PLAY 04 00 02 01 79 STOP 04 00 02 02 78 04 00 02 03 77 04 00 02 04 76 04 00 02 05 75 PAUSE 04 00 02 06 74 EJECT...
  • Page 25 RS-232C 2. SINGLE COMMAND & DATA DATA REQUEST PC’ s key requesting Status from VCR The case which DATA from PC to VCR is proper The case which DATA from PC to VCR isn’ t proper 3. STATUS 3.1 NORMAL STATUS 3.1.1 DATA FORMAT <06><40><STATUS1><STATUS2><STATUS3><STATUS4><CHECK SUM>...
  • Page 26 RS-232C 3.1.3 STATUS2 BIT DESCRIPTION ErrorCNT 1:EMERGENCY 2: REEL NG 3:DRUM NG 4:SENSOR NG SP : 1 LP,EP:0 REC INHIBIT END SENSOR START SENSOR 3.1.4 STATUS3 BIT DESCRIPTION PWRON REPEAT REC YES SERIES REC YES HIGH PICTURE ALARM REC 3.1.5 STATUS4 BIT DESCRIPTION 0:19200 1:9600 2:4800 PAL_T...
  • Page 27 RS-232C <hour> Description about data Status Description hour D6 is 1:MINUS 0:PLUS 3.5 VERSION STATUS 3.5.1 DATA FORMAT <03H><44H><VERSION><CHECK SUM> 3.6 VR DATE STATUS 3.6.1 DATA FORMAT <05H> <45H> <year> <month> <date> <CHECKSUM> 3.7 VR TIME STATUS 3.7.1 DATA FORMAT <06H>...

  • Page 28: Trouble Shooting Flow Chart

    TROUBLE SHOOTING FLOW CHART 1. POWER CIRCUIT When changing the parts which are broken first, remove the power plug from the socket and then dis- charge the voltage across the terminals of C806. (Use an external KΩ resistance) When check the primary circuit , use the oscilloscope isolated properly (Use the isolated transformer) and connect GND to the primary GND, however it is not necessary to isolate the oscilloscope when check the secondary circuit.
  • Page 29 TROUBLESHOOTING FLOW CHART B. CHECKING THE SECONDARY CIRCUIT Check each output voltage Check M801. Check any diode which causes no power Check any COIL, or capacitor which causes no power...

  • Page 30: Servo-Syscon Circuit

    TROUBLESHOOTING FLOW CHART 2. SERVO-SYSCON CIRCUIT Playback picture Manual TRK(+),(-) adjust. is not good Noise appears Noise appears Check and re-adjust although although change the path of Deck. adjusting tracking. cassette tape. CTL HEAD height Adjust the HEAD Is CTL pulse output is normal and height and at pin 25 of IC501?
  • Page 31 TROUBLESHOOTING FLOW CHART Playback picture is not good. Noise appears on the Noise appears on the Check flow A. screen on the whole. screen at the bottom Check the PG Adjustment. Is SW-pulse applied to Is sw pulse supplied Check D.PG input video IC? from pin 18 of IC501? and connector.
  • Page 32 TROUBLESHOOTING FLOW CHART Auto-stop during playback. Is reel pulse applied to Check reel sensor. pin 5 and 6 of IC501? Is D. FG applied to Check connector and pin 24 of IC501? D. FG circuits. Check IC501.
  • Page 33 TROUBLESHOOTING FLOW CHART Drum M/T loading stops. Is motor 12V supplied Check circuit adjacent from IC 504 pin 7, 8? EVER +12.4V. Check power module. Is 5.2V supplied from Check D814. POWER CIRCUIT? Check connector and motor.
  • Page 34 TROUBLESHOOTING FLOW CHART Capstan M/T loading stops. Check power Module. Is motor 12V supplied? Is the input of pin 6 Check circuit of R600, of P501 2.7V~3.7V? R517, R520, C509, C511. Check R525, R526. Is pin 4 of P501 2.5V? Does pin 3 of IC501 Check IC501.
  • Page 35 TROUBLESHOOTING FLOW CHART Drum M/T and capstan M/T rotate at irregular speed. (IN REC MODE) Is C. sync applied to Check C. sync of video pin 93 of IC501? IC and pattern. Check motor Emergency mode when plugging (power cord) Is ever 5V applied? Check power Module.
  • Page 36 TROUBLESHOOTING FLOW CHART Cassette is not inserted. Check power Module. Is motor 12V supplied? CAM DATA is changed Check connector. when CST IN? Is 5V supplied at Check Deck part. pin 31 of IC501? Check pattern Check IC501. and R572.
  • Page 37 TROUBLESHOOTING FLOW CHART Power compensation does not operate. When mains is unplugged, Check C548, C523, is 3.6V at pin 26,pin 81 of IC501? C547, C524. Is (sine) signal applied to Check X502. pin 42 and 43 of IC501? Check reset circuit Is 5V at pin 37 of IC501? Of IC503.
  • Page 38 TROUBLESHOOTING FLOW CHART 3. RS232C A. Software Trouble Shoot A-1. Communication speed confirmation Make sure that the communication speed between PC and TIMELAPSE VCR is correspond to each other. A-2. Communication part Confirmation. Communication serial port on PC is made of COM1 and COM2 in general. Make sure that the comport on secunet V1.0 program and that of PC is correspond to each other.

  • Page 39: U-Com Port Description

    u-COM PORT DESCRIPTION PORT PORT NAME DESCRIPTION S OUTPUT Series record output S INPUT Series record input C PWM Capstan control D PWM Drum control S REEL Supply reel T REEL Take up reel ARMIN Alarm in BUZ SIG Buzzer sound signal AUDIO 24H (H) Audio 24H Output level control REC MUTE...
  • Page 40 u-COM PORT DESCRIPTION PORT PORT NAME DESCRIPTION Xout Xout Xout 16MHz out CLKSET Xcin Xcin Xcin 32MHz in Xcout Xcout Xcout 32MHz out DATA Video data Video clock A MUTE (H) Audio Mute HIGH POWER ON(L) PB LOW D SEL Drum select KEY4 Key IN 4...
  • Page 41 u-COM PORT DESCRIPTION PORT PORT NAME DESCRIPTION 232TX RS232 TX 232RX RS232 RX TRICK(H) TRICK (H) 232 RTS RS232 RTS WARNING OUTPUT Warning output REC SAFETY Record protect END SENSOR End sensor A/D IN START SENSOR Start sensor A/D IN PWR FAIL (L) Power fail A/D IN F/R ADJ...

  • Page 42: Voltage Chart

    VOLTAGE CHART AMP (KA4558 IC502) IC RESET (MN1380L IC503) IC MOTOR DRIVE (BA6209 IC504) 13.6 13.4 13.6 13.4 IC OP AMP (KA4558 IC505)
  • Page 43 VOLTAGE CHART IC OP AMP (KA4558 IC901) IC RELAY (A9W-K RL901) IC RELAY (A9W-K RL902)
  • Page 44 VOLTAGE CHART MICOM IC VOLTAGE CHECK 0.12 0.12 2.76 2.79 2.67 2.68 5.13 5.15 3.81 0.09 5.13 5.15 3.81 3.82 2.22 2.25 3.69 2.97 0.14 0.15 0.87 0.17 5.12 5.15 0.87 0.92 2.76 2.77 0.14 0.17 0.14 0.17 2.94 3.12 0.86 1.07 2.67...
  • Page 45 VOLTAGE CHART A/V IC VOLTAGE CHECK 2.45 2.45 2.46 2.45 2.61 2.61 2.52 2.52 0.02 0.02 2.39 2.62 2.62 0.57 5.02 5.02 2.38 2.38 3.69 3.68 2.38 2.38 3.39 3.39 0.01 0.01 5.01 5.01 0.01 0.01 3.32 3.32 1.52 1.49 3.59 3.59 4.22...

  • Page 46: Circuit Diagram

    CIRCUIT DIAGRAM50 CONNECTION DIAGRAM...

  • Page 47: Power Circuit Diagram

    CIRCUIT DIAGRAM 1. POWER CIRCUIT DIAGRAM...

  • Page 48: Syscon Circuit Diagram

    CIRCUIT DIAGRAM 2. SYSCON CIRCUIT DIAGRAM...

  • Page 49: A/V Circuit Diagram

    CIRCUIT DIAGRAM 3. A/V CIRCUIT DIAGRAM...

  • Page 50: Osd Circuit Diagram

    CIRCUIT DIAGRAM 4. OSD CIRCUIT DIAGRAM...

  • Page 51: Logic Circuit Diagram

    CIRCUIT DIAGRAM 5. LOGIC CIRCUIT DIAGRAM...

  • Page 52: Terminal Circuit Diagram

    CIRCUIT DIAGRAM 6. TERMINAL CIRCUIT DIAGRAM...

  • Page 53: Components Location Guide On Pcb Bottom View

    COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 1. PCB MAIN...

  • Page 54: Pcb Logic

    2. PCB LOGIC...

  • Page 55: Pcb Jack

    COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 3. PCB JACK...

  • Page 56: Disassembly

    DISASSEMBLY 1. PANEL FRONT ASS’ Y...

  • Page 57: Set Total Ass' Y

    DISASSEMBLY 2. SET TOTAL ASS’ Y...

  • Page 58: Packing Ass' Y

    DISASSEMBLY 3. PACKING ASS’ Y...

  • Page 59: Electrical Parts List

    POLY SLIDER D3.1XD6XT0.5 DP11 97P881UB50 CABLE R.S AS ST PLUG-RMC REV 5.0M A2500 97SA310800 TENSION BAND AS K-MECHA PVPKCPN644 PACKING AS DV4K611DZ-T A2600 97S3003500 SPG TENSION SWPB D0.4 C001 97P4931100 PAD L/R A2700 97SA309300 S SUB BRAKE AS K-MECHA C002...
  • Page 60 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK C803A 2224050033 BOND SILICON RTV 252 C015 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 D501 DS1R481T-- LED IR SIR-48IT(P-RANK) C017 HCQK201JBA C CHIP CERA 50V CH 200PF J 1608 D501A 97P2334200 HOLDER LED SENSOR...
  • Page 61 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK C375 HCQK560JBA C CHIP CERA 50V CH 56PF J 1608 C553 HCFH104ZBA C CHIP CERA 25V Y5V 0.1MF Z 1608 C378 HCQK470JBA C CHIP CERA 50V CH 47PF J 1608 C554 HCFH104ZBA C CHIP CERA...
  • Page 62 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK R002 HRFS152JBA R CHIP 1/16 1.5K OHM J 1608 R358 HRFS101JBA R CHIP 1/16 100 OHM J 1608 R003 HRFS682JBA R CHIP 1/16 6.8K OHM J 1608 R365 HRFS101JBA R CHIP...
  • Page 63 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK R548 HRFS472JBA R CHIP 1/16 4.7K OHM J 1608 R911 HRFS102JBA R CHIP 1/16 1K OHM J 1608 R550 HRFS752JBA R CHIP 1/16 7.5K OHM J 1608 R912 HRFS103JBA R CHIP...
  • Page 64 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK C315 CEXF1C470A C ELECTRO 16V RSM 47MF (5X7) TP L202 5CPX820J-- COIL PEAKING 82UH J (RADIAL) C318 CEXF1H100A C ELECTRO 50V RSM 10MF (5X7) TP L301 5CPX101J2T COIL PEAKING 100UH(BRN-BRN) C319...
  • Page 65 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK C349 CBZP1C103M C CERA SEMI 16V Y5S 0.01MF M (AXIAL) L504 5CPZ121K02 COIL PEAKING 120UH K (AXIAL 3.5MM) C510 CBZF1E223Z C CERA SEMI 25V Y5V 0.022MF Z L505 5PB13857-- COIL BEAD...
  • Page 66 1/6 33 OHM J 85801065GY WIRE COPPER 97P65310MA PCB MAIN JP051 85801065GY AWG22 1/0.65 TIN COATING Z0014 PVMPJVE153 PCB MAIN JUMP ONLY AS DV4K611DZ-T JP052 WIRE COPPER AWG22 1/0.65 TIN COATING 85801065GY WIRE COPPER 85801065GY WIRE COPPER JP002 85801065GY AWG22 1/0.65 TIN COATING...
  • Page 67 ELECTRICAL PARTS LIST z_loc z_parts_code parts_descr REMARK z_loc z_parts_code parts_descr REMARK JP061 WIRE COPPER AWG22 1/0.65 TIN COATING JP109 WIRE COPPER AWG22 1/0.65 TIN COATING 85801065GY WIRE COPPER 85801065GY WIRE COPPER JP063 85801065GY AWG22 1/0.65 TIN COATING JP111 85801065GY AWG22 1/0.65 TIN COATING JP064 WIRE COPPER AWG22 1/0.65 TIN COATING...
  • Page 68 85801065GY AWG22 1/0.65 TIN COATING JP220 85801065GY AWG22 1/0.65 TIN COATING JP169 WIRE COPPER AWG22 1/0.65 TIN COATING Z003 PCB LOGIC MANUAL AS DV4K611DZ-T 85801065GY WIRE COPPER 2193100801 SOLDER WIRE JP173 85801065GY AWG22 1/0.65 TIN COATING AL02 2193011100 60 SNA 1.2D...
  • Page 69 REMARK z_loc z_parts_code parts_name parts_descr REMARK Z0032 PVLAJAE153 PCB LOGIC AXIAL AS DV4K611DZ-T R706 RD-AZ430J- R CARBON FILM 1/6 43 OHM J AL31 2TM1456000 TAPE MASKING SI-602 R707 RD-AZ430J- R CARBON FILM 1/6 43 OHM J...
  • Page 70 ELECTRICAL PARTS LIST z_loc z_parts_code parts_name parts_descr REMARK z_loc z_parts_code parts_name parts_descr REMARK Z0042 PVJMJAE153 PCB JACK AXIAL AS DV4K611DZ-T JP962 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING AK31 2TM1456000 TAPE MASKING SI-602 JP963 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING AK31A...

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