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Samsung Electronics

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Summary of Contents for DVD-E234

Page 1: ...erating Instructions 5 Disassembly and Reassembly 6 Alignment and Adjustment 7 Circuit Operating Description 8 Troubleshooting 9 Block Diagram 10 Wiring Diagram 11 Schematic Diagrams Manual DVD PLAYER CONTENTS TRAINING MANUAL DVD E234 ELECTRONICS Samsung Electronics Co Ltd FEB 2003 Printed in Korea AK82 00314A ...

Page 2: ...rwriters Laboratories UL 1270 40 7 With the instrument s AC switch first in the ON position and then in the OFF position measure from a known earth ground metal water pipe conduit etc to all exposed metal parts of the instrument antennas handle brackets metal cabinets screw heads metallic overlays control shafts etc espe cially any exposed metal parts that offer an electri cal return path to the c...

Page 3: ...ched out of place or frayed wiring Do not change spacing between a component and the printed circuit board Check the AC power cord for damage 5 Components parts and or wiring that appear to have overheated or that are otherwise damaged should be replaced with components parts and or wiring that meet original specifications Additionally determine the cause of overheating and or damage and if necess...

Page 4: ...nd lead last 2 The service precautions are indicated or printed on the cabinet chassis or components When servic ing follow the printed or indicated service precau tions and service materials 3 The components used in the unit have a specified flame resistance and dielectric strength When replacing components use components which have the same ratings Components i enti fied by shading by or by in t...

Page 5: ...posure of the assem bly 3 Use only a grounded tip soldering iron to solder or unsolder ESD devices 4 Use only an anti static solder removal devices Some solder removal devices not classified as anti static can generate electrical charges suffi cient to damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a ...

Page 6: ... sheet This gives them the same ground as the sheet 4 Remove the optical pick up block 5 Perform work on top of the conductive sheet Be careful not to let your clothes or any other static sources to touch the unit Be sure to put on a wrist strap grounded to the sheet Be sure to lay a conductive sheet made of copper etc Which is grounded to the table Fig 1 3 6 Short the short terminal on the PCB wh...

Page 7: ... Assy 3 Make solder land 2 points short on Pick up See Fig 1 4 4 Disassembly the Pick up 1 5 2 Assembly 1 Replace the Pick up 2 Remove the soldering 2 points on Pick up 3 Reassemble the Deck Assy PICK UP ASS Y SOLDER LAND 2 POINTS SHORT Note If the assembly and disassembly are not done in correct sequence the Pick up may be damaged Fig 1 4 ...

Page 8: ...Layer Dual Layer Laser Wavelength 650nm 635nm 780nm Track Pitch 0 75um 1 6um Disc Diameter 120mm Disc Thickness 1 2 0 6 x 2 mm 1 2mm Linear Velocity 3 49m s 3 84m s 1 2 1 4m s 2 Disc Formats DVD consists of two 0 6mm discs attached together enabling access to the upper and lower side of the disk and 4 sides could be used at maximum Single Layer 4 7GByte Polycarbonate Label Bondinglayer Reflectivel...

Page 9: ...nd sound for movies and other video media DVD ROM Read Only Multi functional multi midia software that requires large storage capacity DVD Audio Playback Only High quality sound that exceeds the CD multi channel Audio DVD R 1 Time Recording Storage media for the computer DVD RAM Rewritable Data access storage media for the computer ...

Page 10: ...ich enables the user to select the scenario 7 Multi Angle Able to view the camera angle you selected among the scenes recorded with multiple camera angles Note The above media features must have the DVD Title that contains the appropriate contents to function properly 2 2 2 Audio Video Specifications Classification DVD Video Video CD LD Compression MPEG 2 MPEG 1 Analog Pixel 720 x 480 352 x 240 VI...

Page 11: ...Feature 1 When Developing the DVD Software various addition and modification is possible DVD Video uses the variable compresion technology the MPEG 2 to compress the moving image optimally mini mizing the Data loss to Provide a clear natural screen while increasing the storage time DVD Video Feature 2 Application of the MPEG 2 compression technology MPEG 2 Variable compression Max 1 40 Field unit ...

Page 12: ...conventional Dolby Pro Logic and Stereo are all compatible Each separated channels are played back at CD quality sound Frequency band 20Hz 20KHz Linear PCM Pulse Code Modulation Provides the high quality Digital sound without the audio data compression Various Digital Recordings are possible as shown in the table to the right DVD Video Feature 3 High quality surround audio Sampling Frequency Bit R...

Page 13: ...lities 16 9 TV Wide Mode 16 9 Wide Full Screen 4 3 TV Letter Box Mode Pan Scan Mode DVD Video Feature 5 Multi Aspect 4 3 Pan Scan 16 9 Wide 4 3 Letter Box Up to 9 angles of view may be stored enabling the viewer to select a specific viewpoint at a given time Especially for the Music Video and Sports Title this provides a more lively image of the scene DVD Video Feature 6 Multi Angle Note Only enab...

Page 14: ... Classify the world into 6 regions and if the DVD Title and the Player s Reginal Code do not agree playback is prohibited Regionnal Coding is optional for the Soft developers Region 0 All Code but the Hardware developers must adopt the appropriate regionnal code for sale Region 1 The United States and its territories Canada Region 2 Europe Japan Greenland Egypt South Africa the Middle East Region ...

Page 15: ... as the conventional LD VCD or Original Film Different Authoring Process are used accoring to the Software developers and this may affect the DVD image quality Authoring Process Remark DVD Video Authoring Process Video Audio Master Surround Audio Master Subtitle Master MPEG 2 Encoding AC 3 MPEG Audio Encoding Cutting Master Disc Production Subtitle Encoding Authoring Process Video Audio Subtitle M...

Page 16: ...ed 1 2 to 1 4m sec Maximum Play Time 74min Video Audio Composite Video 2 channel 1 0Vp p 75ohm load SCART Video R Red 0 7Vp p 75ohm load Video Output G Green 0 7Vp p 75ohm load B Blue 0 7Vp p 75ohm load Composite Video 1 0Vp p 75ohm load Luminance Signal 1 0Vp p 75ohm load Color Signal 0 3Vp p 75ohm load S Video Luminance Signal 1 0Vp p 75ohm load Chrominance Signal 0 3Vp p 75ohm load SCART Jack 2...

Page 17: ...ssembly and Reassembly 5 1 Cabinet and PCB 5 1 1 Top Cabinet Removal 1 Remove 3 Screws Œ on the back Top Cabinet 2 Lift up the Top Cabinet in direction of arrow Œ 3 SCREWS Fig 5 1 Top Cabinet Removal Note Reassembly in reverse order ...

Page 18: ...he Door Tray in direction of arrow A 3 Close Tray Œ and power off Note If Tray Œ doesn t open insert a Screw driver into the Emergency hole ˇ as shown in detailed draw ing and then push it in the direction of arrow B Open Tray manually A Œ TRAY DOOR TRAY Side View ˇ EMERGENCY HOLE SCREW DRIVER B Fig 5 2 Door Tray Removal ...

Page 19: ... Electronics 5 3 2 HOOKS Œ 2 HOOKS ˆ ASS Y FRONT CABINET ˇ 1 HOOK 1 HOOK Fig 5 3 Ass y Front Cabinet Removal 5 1 3 Ass y Front Cabinet Removal 1 Remove Knob Volume Œ and Ass y Front Cabinet 2 Remove Knob Jog ˇ and 5 Screws and Key PCB ˆ ...

Page 20: ...embly DCN1 DCN2 DCN3 DECK ASS Y Œ 3 SCREWS FLAT CABLE CONNECT WIRE MAIN PCB 5 1 4 Ass y Deck Removal 1 Disconnect Flat Cable Connect Wire from DCN1 DCN2 on Main PCB 2 Remove 3 Screws Œ from the Ass y Deck and lift it up Fig 5 4 Ass y Deck Removal ...

Page 21: ...ctronics 5 5 2 SCREWS ˇ JACK PCB ˆ MAIN PCB 4 SCREWS Œ 2 SCREWS Fig 5 5 Main PCB Jack PCB Removal 5 1 5 Main PCB Jack PCB Removal 1 Remove 2 Screws Œ 2 Remove 2 Screws and lift up the Jack PCB ˇ 3 Remove 4 Screws and lift up the Main PCB ˆ ...

Page 22: ...5 6 Samsung Electronics Disassembly and Reaasembly JACK PCB MAIN PCB 5 2 PCB Location Fig 5 6 PCB Location ...

Page 23: ...ider Housing ˇ in the direction arrow A 2 When the Tray Disc comes out a little pull it in the direction arrow B by hand 3 Pull the Tray Disc to disassemble while simultaneously pushing 2 Stoppers ˆ left right in the direction arrow C D Fig 5 7 Tray Disc Removal B ˇ SLIDER HOUSING D TRAY DISC A Œ SCREW DRIVER EMERGENCY HOLE ˆ STOPPER C ˆ STOPPER ...

Page 24: ...3 2 Assy P U Deck Removal 1 Disconnect DCN2 Œ DCN3 2 Lift down the Assy P U Deck ˇ while simultaneously pushing 2 Hooks ˆ in the direction of arrow A B Fig 5 8 Assy P U Deck Removal Œ DCN2 DCN3 ˇ ASSY P U DECK Assembly Point SLIDER HOUSING B A ˆ HOOK HOOK ...

Page 25: ...nd lift up Pulley Gear ˇ 3 Push the Slider Housing ˆ in the direction arrow B and lift up the Gear Tray 4 Lift up the Slider Housing ˆ 5 Remove 2 Screws Ø and lift down the Motor Load Assy 6 Remove Clamper Ass y Fig 5 9 Housing Ass y Removal Œ BELT ˇ PULLEY GEAR GEAR TRAY MOTOR LOAD ASSY Ø 2 SCREWS ˆ SLIDER HOUSING CLAMPER ASSY B HOOK A ...

Page 26: ...sembly and Reaasembly 5 3 4 Sub Chassis Removal 1 Remove the Soldering of Motor Feed wire Œ 2 Remove the 4 Screws 3 Lift up the Ass y Brkt Deck ˇ Fig 5 10 Sub Chassis Removal 4 SCREWS ˇ ASSY BRAK DECK Œ SOLDERING OF MOTOR FEED WIRE ...

Page 27: ...3 Screws ˇ and 3 Holder Cam Skew 3 Remove Shaft Pick Up ˆ and Pick Up Assy Ø 4 Remove Gear Feed A 5 Remove 2 Screws 6 Remove Motor Feed Ass y 7 Remove 3 Screws 8 Remove Motor Spindle Ô Fig 5 11 Ass y Brkt Deck Removal 2 SCREWS 3 SCREWS ˇ 3 SCREWS HOLDER CAM SKEW GEAR FEED B ˆ SHAFT PICK UP GEAR FEED A MOTOR FEED ASS Y Ø PICK UP ASS Y Ô MOTOR SPINDLE Œ HOOK A ...

Page 28: ...Samsung Electronics 6 1 6 Alignment and Adjustment 6 1 Location od Test Point Fig 6 1 Location of Test Point SKEW ...

Page 29: ... Test Point 6 2 Skew Adjustment Test Disc Adjustment Spec Test Point Adjustment Location TDV 533 ENV Screw A B Chapter 14 Flat Waveform Main PCB Component Side Ass y Deck Bottom Side See Fig 6 1 See Fig 6 2 Fig 6 2 Ass y Deck Top Side Test Disc Service not Available Table 6 1 ...

Page 30: ...lloscope Range as follows Voltage 50mV Div Frequency 10m Sec 3 Adjust the Screws A and B See Fig 6 2 using a Hex screwdirvier until you obtain a Flat Waveform and the picture is stable Then go to Chapter 1 and make sure the Waveform is Flat here as well If not you have to go back to Chapter 14 and adjust again If you cannot obtain a Flat waveform then the unit is defective Note The Deck must be in...

Page 31: ... Linear Vreg Vout Vs Ns Vp Np REGULATOR Common power Ex 230V 50 60Hz Fig 7 1 Linear Power Supply Waveform Description Vs t 0 Fig 7 2 Vs t 0 Fig 7 3 Vout t 0 Fig 7 4 Input Common power to transformer Vp The output Vs of transformer is determined by the ratio of 1st Np and 2nd Ns Vs Ns Np x Vp Vout is output DC by diode and condensor ...

Page 32: ...s caused by margin design Greater core size and condensor capacity are ne eded because the transformer works on a single power frequency 3 3 1 b S M P S Pulse width modulation method Terms 1 1st Common power input to 1st winding 2 2nd Circuit followings output winding of transformer 3 f Frequency Switching frequency T Switching cycle 4 Duty Ton T x 100 Transformer Vout Np Vp Switch Vs switch I swi...

Page 33: ...ing switch off Suppress noise High inverted power occurs at switch PIC1 off because of the 1st winding of transformer V LI xdi dt LI Leakage Induction A very high residual voltage exists on both terminals of PQR11 because dt is a very short 2 SNUBBER circuit protects PIC1 from damage through leakage voltage suppression by RC Charges the leakage voltage to PER11 PDS11 PCD11 and discharges to PR1 7 ...

Page 34: ...8V 2 If load of 5 8V terminal decreses or AC inout voltage increases and Vout increases over 5 8V Then PICS2 Vs potential up over 2 5V PICS2 Vc down PICS1 A K potential down PICS1 C E current up PQR12 base current up PQR11 base current down Vout down Maintain 5 8V PRD31 PRD32 Reduce 5 8V overshoot PRS32 PCS32 Prevent PICS2 oscillation for phase correction 7 1 2 d Feedback Control Circuit PR2 PR3 P...

Page 35: ...Removal SNUBBER Power TR Control Circuit Converter Voltage Detection Circuit FLT Driving Circuit 3 3V Rectified Smoothing Circuit 5V Rectified Smoothing Circuit 8V Rectified Smoothing Circuit 8V Rectified Smoothing Circuit 3 3V Rectified VoltageCircuit 5V Rectified VoltageCircuit x2 Motor 8V 1 Port 8V Rectified VoltageCircuit 8V Rectified VoltageCircuit O U T P U T Fig 7 10 ...

Page 36: ... RF signal Fig 7 11 shows the flow of signal generated by the pick up A B C D signals detected from pick up are converted in to RF signal A B C D via RF summing AMP Fig 7 12 shows the waveform equalizing block diagram for the RF signal It outputs to EQout Pin 70 terminal by initially changing switching AMP gain of DVD and CD and then adjust ing the level in RF SUM AGC RF SUM and AGC is Contvolled ...

Page 37: ...L PLLGF VZOCTL RDPF EQ_FREQ EQ_BOOST EQG_CEN X z b B v Z Fig 7 12 The control parameters of DVD EQ and CD EQ are as follows 1 DVD CD EQ control parameter Œ EQG Changes the gain of peak frequency with EQ frequency characteristic EQF Changes the peak frequency with EQ frequency characteristic ...

Page 38: ...ted in main board analizes the key commands of front panel or instructions of remote control through communication with Micom FIC1 GMS81C2020 of front and controls the devices on board to execute the corresponding commands after initializing the devices connected with micom on board at power on 7 3 2 Block Diagram RIC1 RF AMP KS1463 SIC1 and DSP DIGITAL SERVO KS1455 AIC1 D A CONVERTER PCM1742 ZIC1...

Page 39: ...FLASH DSP ZIC1 126 DSPCS DIC1 2 DVD1CS ZIC1 208 CSB SIC1 10 0 Low before trial So to speak the bus is used by time division as shown in Fig 7 14 Two and more devices can t be accessed simultaneously CH1 CH2 CH3 CH4 Fig 7 14 Servo Chip Access CH1 DSPCS ZIC1 123 DSP CHIP SELECT CH2 FLASHCS ZIC1 126 FLASH CHIP SELECT CH3 WR 9ZIC1 129 MICOM OUTPUT WRITE SIGNAL CH4 RD ZIC1 128 MICOM OUTPUT READ SIGNAL ...

Page 40: ...signal created from Pick up 3 SLED Linked SERVO When the tracking actuator inclines outwardly as the object lens follows the track during play the SLED motor moves slightly and counteracts the incline 4 CLV SERVO DISC Motor Control SERVO Controls the disc motor to maintain a constant linear velocity necessary for RF signal 7 4 2 Block Diagram Fig 7 15 DISC DECK RIC1 S5L1463 SIC1 S5L1455 to ZIC1 Va...

Page 41: ...1 FOD Pin8 of RIC1 ABCD Pin39 of SIC1 FEL 2 PLAY When focus loop closes the loop during focus servo on both pin 65 and pin 75 of SIC1 are controlled by VREF voltage approx 1 65V and pin 26 27 of SIC3 are approximately 2 5V 2 TRACKING SERVO 1 NORMAL PLAY MODE Œ For DVD Composite The signal output from PD A B C D of Pick up the tracking error signal pin31 of RIC1 uses the phase difference of A C and...

Page 42: ...SLED LINKED SERVO Normal play mode Move SLED motor slightly by means of PWM signal in SIC1 pin 26 as the tracking actuator moves along with track during play Control to move the entire Pick up as the tracking actuator moves Coarse serach mode In case of long distance search such as chapter serach SIC1 uses MIRR and TZC signal of SIC1 37 159 Then read ID and compute the existing track count after i...

Page 43: ...ious track after mem orizing the last data read from disc until now It takes some times to jump to the previous track and return to the original jump location again The memory will have an empty space because A V decoder reads out data of mem ory When the memory has an empty space where data can be processed and written and the pick up correctly gets to the original location before kick back locat...

Page 44: ...ectronics 7 5 3 Waveform Description It measures the timing that data processed in SIC1 at DVD playback CH1 CH2 CH3 CH4 Fig 7 18 CH1 STROBE SIC1 123 CLOCK CH2 REQ SIC1 124 DATA REQUEST CH3 DACK SIC1 125 DATA ACKNOWLEDGE CH4 SDATA SIC1 126 133 SDATA ...

Page 45: ... Cout CVBS VIC1 6dB AMP CVBS Y R C B G SCIC3 MM1501 R C Fig 7 19 Video Output Block Diagram 7 6 2 NTSC PAL Digital Encoder VADDIS 5E Built in video encode ZIC1 inputted from pin 161 with 27MHz generates HSYNC and VSYNC which are based on video signal ZIC1 is synchronous signals with decoded video signal and control the output timing of 8bit video signal of ITU R601 format The separate signal is en...

Page 46: ...se the level of video encoder output is only 1 1Vpp the level is adjusted with the special amplifier When mute of pin 5 is high active if the pin is floating and connecte to power the output signal is never ouputted CVBS Y C R G B outputted from video encoder are inputted to VIC1 Pin 2 8 6 16 11 14 The signal to which gain is adjusted by amplifier is outputted from jack via 75ohm Resistance VR11 V...

Page 47: ...putted via post filter and amplifier CD and VCD are outputted with only 2 channels audio data and transmit them to Data 0 If DVD of multichannel Source disc if is downmixed and transmit them to Data0 If you want to listen to the multichannel output you have to connect digital output with AC 3 amp or MPEG DTS amp AIC1 PCM1742KE D A CONVERTER POST FILTER POST FILTER AMP AMP ZIC1 Vaddis 5E A V Decode...

Page 48: ...is that data isn t compressed so it is called CD DA LPCM data The 2 channels data is converted through audio decoder 2 channel data and Data 0 and are outputted in digital audio interface Via IEC 958 output process they is transmitted to digital amplifier or AC 3 MPEG DTS amplifier built in the external digital input source with IEC 958 1937 transmission format AUDIO INPUT BUFFER AUDIO OUTPUT BUFF...

Page 49: ...e SIC3 10 11 output are normal Check open state from SIC3 to pick up Check RIC1 and A B C D input Check SIC3 Yes Yes No No A No pick up home positing SIC1 15 SLD output is normal 1 7V 1 8V Check the Sled Motor and connection Check SIC1 Yes No SLED SLED SIC3 32 33 output are normal Check SIC3 Yes No ...

Page 50: ... real voltage difference into 10ohm B No Search Operation MIRR SIC1 37 output is normal Actual velocity occurs at SIC1 15 terminal Actual velocity occurs at SIC3 32 33 terminal Check RIC1 peripheral circuit RFAGCO RIC1 73 output level is normal Check SIC1 peripheral circuit Check SIC3 peripheral circuit No No No No Yes TE occurs in search range Focus On Yes Yes Yes A See Fine Seek Check No Yes Che...

Page 51: ...pick up Check Deck Check RIC1 31 terminal Check SIC3 peripheral circuit Yes Yes Yes Yes Yes Yes Yes No No No No No No No FINE SEEK Check FINE SEEK MIRR signal RIC1 67 is missing 159 signal SIC1 24 is occurs Track incomming is delayed TE is within 2V and 3V Pick up transfer smooth Check RIC1 Peripheral curcuit Check SIC1 Peripheral curcuit Time out due to many jump counts Check SIC1 peripheral circ...

Page 52: ...erpheral circuit and DCN3 connector Yes Yes No No CD VCD DVD L R output error Mixed Audio output Normal DATA 0 is input in AIC4 2 Analog output of AIC4 7 8 Vout is normal Check AVJ2 peripheral soldering shot Check ZIC1 184 output Check ZIC1 179 CD VCD 16 9344MHz DVD 18 432MHz Yes Yes No No AOP4 1 7 output is normal Check AOP1 peripheral circuit Yes No Base terminal level of AQ1 AQ3 are L Check FIC...

Page 53: ...g signals are inputted normally VIC1 2 Yes No Power is normal at VIC1 1 34 Yes No Pin 5 in VIC1 is in high stste Yes Check the connection netween pin 133 in ZIC1 and VIC1 Check the connection betwen VIC1 1 and PDS52 Check the connection between PDS52 and pin 1 in VIC1 Check the soldering of VIC1 No No Check the connection between VIC1 and output jack Pin of VDDP in ZIC1 has normal level Check the ...

Page 54: ...eed back Yes Yes No Yes RGB output error at SCJ1 1 Scart Jack Output voltage at pin 16 in SCJ1 is in 1V 3V RGB signal is outputed at pin 139 145 151 in ZIC1 Check the pin 13 in SCIC1 H state Check SCQ 2 3 circuit See Video output error in RCA jacks Yes Yes No No Yes Œ Check the VIC1 15 H state Check the connection with VIC1 18 21 24 No Check the connection between SCIC1 and VIC1 RGB signal is inpu...

Page 55: ...A jacks Yes Yes No No R signal is outputed normally at pin 4 in SCIC2 Yes No Yes Œ Check the connection between pin 151 in ZIC1 and pin 3 in SCIC2 Check the pin 9 10 11 in SCIC3 H state Œ Check the VIC 15 H state Check the connection with VIC1 18 21 24 No Check the connection between SCIC2 and VIC1 RGB signal is inputed at VIC1 12 14 16 RGB signal is outputed at pin 7 11 15 in SCJ1 No Yes Check th...

Page 56: ... SIC1 KS1455 Servo DSP RIC1 S5L1463 RF Amp DPD FIC1 GMS81C2020 Front Controller ZIC1 Vaddis 5E A V Decoder CVBS Scart Lt Rt A V Decoder AC3 MPEG 5 1 Video Encoder 4DAC AUDIO DSP CSS INPUT FIFO DEMUX AIC4 PCM1742 2 CH Audio DAC 6dB AMP 6dB AMP Down L R DTS Bitstream CVBS Y R C B G ZIC7 2KBit EEROM Post Filter Post Filter Post Filter VIC1 LA73054 SCIC1 MM1647 CVBS Y RGB C L R SCIC3 MM1501 R C Optica...

Page 57: ...Samsung Electronics 10 1 10 Wiring Diagram ...

Page 58: ... Schematic Diagrams 11 1 Power 11 2 AV Decoder Main Micom Key 11 3 Servo 11 4 Front Micom VFD Display 11 5 Video 11 6 Audio Block Identification of PCB Main PCB Component Side Jack PCB Conductor Side 11 2 11 3 11 4 11 5 11 6 11 7 ...

Page 59: ...Schematic Diagrams 11 2 Samsung Electronics 11 1 Power ...

Page 60: ...Schematic Diagrams Samsung Electronics 11 3 Only for DVD P230 OPTOIN 11 2 AV Decoder Main Micom Key ...

Page 61: ...Schematic Diagrams 11 4 Samsung Electronics 11 3 Servo ...

Page 62: ...Schematic Diagrams Samsung Electronics 11 5 11 4 Front Micom VFD Display ...

Page 63: ...Schematic Diagrams 11 6 Samsung Electronics 11 5 Video ...

Page 64: ...Schematic Diagrams Samsung Electronics 11 7 11 6 Audio ...

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