Samsung SV-DVD940 Service Manual Download

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Schematic Diagrams

Samsung Electronics

6-15

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6-14 DVD Audio/Video

Summary of Contents for SV-DVD940

Page 1: ...40 DVD VCR PROG STANDBY ON REC EZ VIEW DVI VIDEO OPEN CLOSE ELECTRONICS Samsung Electronics Co Ltd OCT 2003 Printed in Korea AK82 00435A If you want to know additional information which is not included on this Service Manual please refer to the SV DVD540 Training Manual AK82 00401A This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under ...

Page 2: ...otor Load Ass y Separate the Motor Load Ass y 2 When Slider S T approachs the unloading position rotate holder Clutch counterclockwise after inserting screwdriver in the frame s bottom hole in order to wind the unwound tape Refer to Fig 3 If you rotate Gear Worm Œ continuously when tape is unwinding you may cause tape contamination by grease and tape damage Be sure to wind the unwound tape with th...

Page 3: ...erwriters 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 ...

Page 4: ...nched 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 neces...

Page 5: ...d 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 identi fied by shading by or by in th...

Page 6: ...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 7: ... 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 8: ... Assy 3 Make solder land 2 points short on Pick up See Fig 1 4 4 Disassemble 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 9: ...etting 3 When replacing the cylinder ass y be sure to adjust the X Point and Head switching adjustment 4 How to adjust Press the SW706 TEST botton on VCR MAIN PCB to set the adjustment mode If the corresponding adjustment button is pressed the adjustment is performed automatically When the adjustment is completed be sure to turn the power off 2 1 1 a Location of adjustment button of remote control...

Page 10: ...2 2 Alignment and Adjustments Samsung Electronics 2 1 1 b TEST location for adjustment mode setting Fig 2 2 VCR Main PCB Top View TEST SW706 BUTTON ...

Page 11: ... button is pressed the selected number is changescolor See Fig 2 4 5 Press the ENTER button of remote control again to store the option number 6 Turn the Power off 1 NVRAM Option is adjusted in the factory 2 In case Main PCB Micom IC601 and NVRAM IC605 EEPROM are replaced be sure to set the corresponding option number of the required model If the option is not set the unit will not operate CNG OK ...

Page 12: ... 69 SV DVD940 XEN 2 4 5 6 7 8 9 10 11 12 13 32 34 36 38 40 42 47 50 63 65 69 72 SV DVD940 XEC 2 4 5 6 7 8 9 10 11 12 13 32 34 36 38 40 42 47 50 63 65 69 72 SV DVD940 XEE 2 4 5 6 7 8 9 10 11 12 13 32 34 36 38 40 42 47 50 63 65 69 72 SV DVD940 XEG 2 4 5 6 7 9 10 11 12 13 32 34 36 38 40 42 47 50 63 65 69 72 SV DVD940 XET 2 4 5 6 7 9 10 11 12 13 32 34 36 38 40 42 47 50 63 65 69 72 SV DVD940 XEV 2 6 7 ...

Page 13: ...Alignment and Adjustments 2 5 Samsung Electronics 2 2 DVD Adjustment 2 2 1 Location of Test Point Fig 2 5 Location of test Point DVD Main PCB Top Side ...

Page 14: ...Spec and Test Point 2 2 2 Skew Adjustment Test Disc Adjustment Spec Test Point Adjustment Location TDV 533 ENV Ass y Deck Top Side Chapter 14 Flat Waveform DVD Main PCB Top Side See Fig 2 6 See Fig 2 5 Fig 2 6 Ass y Deck Top Side Test Disc Service not Available Table 2 2 ...

Page 15: ...e Oscilloscope Range as follows Voltage 50mV Div Frequency 10m Sec 3 Adjust the Screws A and B See Fig 2 6 using a Hex screwdriver 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 ...

Page 16: ...eference for the transport adjustment To maintain the height of the tape guide and prevent damage do not apply excessive force onto the main base Fig 2 8 Location of Tape Transport Adjustment Fig 2 9 Tape Travel Diagram CYLINDER ASS Y TAKE UP REEL DISK 8 GUIDE POST 9 GUIDE POST SUPPLY REEL DISK CAPSTAN PINCH ROLLER GUIDE ROLLER T GUIDE ROLLER S FULL ERASE HEAD 3 GUIDE POST TENSION POST HEIGHT SCRE...

Page 17: ...e is still observed at the tape guide perform the tilt adjustment of the ACE head 1 ACE Head Assembly Adjustment a ACE HEAD HEIGHT ADJUSTMENT 1 Run the alignment tape Color bar in the playback mode 2 Observe surface of the audio head using a dental mirror 3 Turn screw C clockwise or counterclockwise until the gap of lower tape edge and the lower edge of the control head is about 0 25mm Refer to Fi...

Page 18: ...wer flange of tape guide as shown in Fig 2 12 B 3 If a curl or wrinkle of the tape occurs slightly turn the screw A tilt adjust on the ACE head ass y 4 Reconfirm the ACE head height Fig 2 12 Tape Guide Check c AUDIO AZIMUTH ADJUSTMENT 1 Load alignment tape Mono scope and playback the 7KHz signal 2 Connect channel 1 scope probe to audio output 3 Adjust screw B to achieve maximum audio level See Fig...

Page 19: ...ons then adjustment is operates automatically See Fig 2 1 4 Connect the CH 1 probe to Envelope the CH 2 probe to H D switching pulse and then trigger to CH 1 5 Insert the driver into the X Point adjustment hole and adjust it so that envelope waveform is maximum Test point TP2 Audio Output TP3 Envelope TP4 H D S W Trigger TP5 Control Pulse Fig 2 13 Location of Test point Main PCB Top View AUDIO OUT...

Page 20: ... follows Note a Maximum output of the video RF envelope b Minimum output of the video RF envelope at the entrance side c Minimum output of the video RF envelope at the center point d Maximum output of the video RF envelope at the exit side 4 If the section A in Fig 2 15 does not meet the specification adjust the guide roller S up or down 5 If the section B in Fig 2 15 does not meet the specificati...

Page 21: ...ope CH 1 to the Envelope and CH 2 to the H D SW Pulse for triggering 8 Turn the guide roller heads with a flat head driver to obtain a flat video RF envelope as shown in Fig 2 16 Fig 2 16 Guide Roller S T Height Adjustment IDEAL ENVELOPE SHEIGHTTOOHIGH SHEIGHTTOOLOW THEIGHTTOOHIGH THEIGHTTOOLOW GUIDE ROLLER S GUIDE ROLLER T ...

Page 22: ...E Fig 2 17 Video Envelope Rising when Operation mode Changes from RPS to Play Mode 4 Envelope Check 1 Make recordings on T 120 E 120 and T 160 E 180 tape Make sure the playback output envelope meets the specification as shown in Fig 2 18 2 Play back a self recorded tape recording made on the unit using with T 120 E 120 The video envelope should meet the specification as shown in Fig 2 18 In SP mod...

Page 23: ... ass y drives the disk reel S T through gear idler by rotation of gear center ass y 3 Brake is operated by slider cam at FF REW mode 4 Transportation of accurate driving force is done by gears Gear Center Ass y Note If the spec does not meet the followings specifications replace the holder clutch ass y and then recheck MODE TORQUE g cm GAUGE PB 42 11 Cassette Torquemeter RPS 145 30 Cassette Torque...

Page 24: ...2 16 Alignment and Adjustments Samsung Electronics MEMO ...

Page 25: ...rts List 3 1 Cabinet Assembly 3 2 3 2 VCR Mechanical Parts Top Side 3 4 3 3 VCR Mechanical Parts Bottom Side 3 6 3 4 DVD Mechanical Parts 3 8 You can search for the updated part code through ITSELF web site URL http itself sec samsung co kr Notice ...

Page 26: ... DVD DECK S N A 157 BRACKET FRAME S N A 153 UT01 101 155 701 FUNCTION PCB 603 S M P S PCB 602 DVD MAIN PCB 604 DVI PCB TM401B TM402B 1 21 22 S N A Service Not Available 157 VCR DECK S N A 3 2 601 VCR MAIN PCB LD601A S602A 200 OPEN CLOSE STANDBY ON PROG TRK OK KARAOKE VOLUME ...

Page 27: ...0206B ASSY SORT FUNCTION SV DVD60 XEV SLIM DIV LD601A AC61 00340A HOLDER LED X 11 POM K300 NTR S602A AC61 00341A HOLDER TR X 11 POM K300 NTR TM401B AC97 02280A ASSY CONNECTOR BOARD HIPS94HB SV DVD540 TM402B AK97 00625A ASSY CONNECTOR BOARD HIPS94HB SV DVD540 UT01 AK59 00008E REMOCON SV DVD55 SAMSUNG MODELS 1 200 601 602 SV DVD940 XEF AK97 00542F 3903 000129 AC92 01463M AK92 00342A SV DVD940 XEB AK...

Page 28: ...Electronics 3 2 VCR Mechanical Parts Top Side G001 G555 K546 B410 B440 B448 B452 G546 G060 G520 G527 K188 K182 K110 K240 K248 K350 K330 K140 K340 G070 K470 B474 B473 K250 K530 K490 G530 G420 G450 K502 G510 G480 G560 OPTIONAL OPTIONAL G681 G680 ...

Page 29: ... SUS304 WPB 0 25 G530 AC33 00015A HEAD FE HVFHP0043A PBT3300 2PIN BLACK G546 AC66 00083A LEVER FL DOOR X 11 POM K300 BLU G555 AC66 00032A LEVER UNIT PINCH ASS Y TS 10 G560 AC61 00122A POST 8 GUIDE ASS Y TS 10 POM SUS 303 G680 AC66 00046A LEVER HEAD CLEANER ASS Y TS 10 POM URETH OPTIONAL G681 AC61 50686A SLEEVE HEAD CLEANER POM TS OPTIONAL K110 AC66 10267A REEL DISK S X 9 POM K140 AC66 10268A REEL ...

Page 30: ...Exploded View and Parts List 3 6 Samsung Electronics 3 3 VCR Mechanical Parts Bottom Side G542 B462 B560 B484 B488 B500 B456 B458 B464 B468 K222 K200 K225 K221 B478 B570 B460 B475 B561 ...

Page 31: ... L10 W10 H10 POM M90 44 B478 AC66 00016A LEVER TENSION DRIVE TS 10 SECC E20 20 1 B484 AC66 00078A GEAR LOADING DRIVE X 11 POM K300 B488 AC97 02195A ASSY LEVER LOADING S SECC POM SUS X 11 F B500 AC97 02196A ASSY LEVER LOADING T SECC POM SUS X 11 F B560 AC81 00002A MOTOR CAPSTAN THRUST END PLAY 0 2 MR FG B561 3809 001429 CABLE FLAT 30V 80C 140MM 10P 1 25MM UL28 B570 AC60 10514A SCREW CAPSTAN M2 6 L6...

Page 32: ...Exploded View and Parts List 3 8 Samsung Electronics 3 4 DVD Mechanical Parts H107 S N A H105 H106 H103 H108 H104 H211 H241 H102 H206 H207 H206 H203 H202 H209 H210 900 900 903 903 904 H204 H205 ...

Page 33: ...R CR T1 2 4 3 1 2X25 1 B H106 AK66 00008A GEAR TRAY DP 9 POM H107 AK66 00009A SLIDER HOUSING DP 9 POM H108 AK63 00008B TRAY DISC DP 9 ABS GRAY COMBO H202 AK73 00005A RUBBER INSULATOR DP 9 BUTYL RUBBER H203 AH61 50327A SHAFT P U DP 3 SUS420J2 L84 7 OD3 H204 AK66 00010A GEAR FEED A DP 9 POM H205 AK66 00011A GEAR FEED B DP 9 POM H206 AK61 00032A HOLDER CAM SKEW DP 9 POM BLACK H207 AK31 00004A MOTOR S...

Page 34: ...Exploded View and Parts List 3 10 Samsung Electronics MEMO ...

Page 35: ...RVO PARTS C601 2203 002398 C CER CHIP 22nF 10 50V X7R TP 1608 C602 2401 002095 C AL 47uF 20 25V GP TP 6 3x5 5 C605 2202 000797 C CERAMIC MLC AXIAL 10NF 30 16V Y5S TP C606 2203 000257 C CER CHIP 10nF 10 50V X7R TP 1608 C607 2401 000118 C AL 1000uF 20 10V GP TP 10x12 5 5 C607A 2401 003107 C AL 47uF 20 16V GP TP 5x7 5 C608 2401 002259 C AL 0 1F 80 20 5 5V TP 12 5x11 BACK UP 1HOUR Only C610 2202 00203...

Page 36: ... CER CHIP 47nF 10 25V X7R TP 1608 C331 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 C332 2202 002055 C CERAMIC MLC AXIAL 47nF 80 20 50V Y5V C333 2401 000408 C AL 10uF 20 16V GP TP 3 5x5 2 5 C334 2203 000975 C CER CHIP 47nF 10 25V X7R TP 1608 C334A 2203 000236 C CER CHIP 0 1NF 5 50V C0G TP 1608 C335 2203 001652 C CER CHIP 470nF 80 20 16V Y5V TP 1608 C337 2203 001652 C CER CHIP 470nF 80 20 16V Y5...

Page 37: ...1 8W AA TP 1 8X3 2M R3A26 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM R3A28 2007 000079 R CHIP 1 8Kohm 5 1 10W TP 1608 R3A50 2001 000800 R CARBON 5 1KOHM 5 1 8W AA TP 1 8X3 2M R3A51 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 R3A60 2001 000605 R CARBON 3 6KOHM 5 1 8W AA TP 1 8X3 2M R3Q1 2007 000122 R CHIP 1 2Kohm 5 1 10W TP 1608 R3Q12 2001 000008 R CARBON 15KOHM 5 1 8W AA TP 1 8X3 2MM R3Q2 20...

Page 38: ...01 000408 C AL 10uF 20 16V GP TP 3 5x5 2 5 C4N15 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 C4N16 2401 001502 C AL 47uF 20 16V GP TP 6 3x5 2 5 C4N17 2203 001656 C CER CHIP 0 47nF 5 50V NP0 TP 1608 C4N18 2203 001656 C CER CHIP 0 47nF 5 50V NP0 TP 1608 C4N19 2202 000279 C CERAMIC MLC AXIAL 47pF 5 50V SL TP 3 C4N21 2201 002069 C CERAMIC DISC 0 0015NF 0 25PF 50V C0G T C4N22 2201 002069 C CERAMIC ...

Page 39: ...001134 R CHIP 68ohm 5 1 10W TP 1608 R809 2007 001167 R CHIP 75ohm 5 1 10W TP 1608 R810 2007 000643 R CHIP 270ohm 5 1 10W TP 1608 R811 2007 000643 R CHIP 270ohm 5 1 10W TP 1608 R813 2007 000643 R CHIP 270ohm 5 1 10W TP 1608 R814 2007 000643 R CHIP 270ohm 5 1 10W TP 1608 R815 2007 000643 R CHIP 270ohm 5 1 10W TP 1608 R816 2007 000643 R CHIP 270ohm 5 1 10W TP 1608 R819 2007 000643 R CHIP 270ohm 5 1 1...

Page 40: ... SMALL SIGNAL KSC1623 L NPN 200mW SOT AQ2 0504 000156 TR DIGITAL KSR2103 PNP 200MW 22K 22K SOT AQ3 0501 000341 TR SMALL SIGNAL KSC1623 L NPN 200mW SOT AQ4 0504 000128 TR DIGITAL NPN 200MW 22K 22K SOT 23 TP AQ5 0504 000156 TR DIGITAL KSR2103 PNP 200MW 22K 22K SOT AQ6 0501 000341 TR SMALL SIGNAL KSC1623 L NPN 200mW SOT AQ7 0504 000128 TR DIGITAL NPN 200MW 22K 22K SOT 23 TP AQ8 0504 000156 TR DIGITAL...

Page 41: ...10Kohm 5 1 10W TP 1608 FR17 2007 000088 R CHIP 7 5Kohm 5 1 10W TP 1608 FR18 2007 000092 R CHIP 15Kohm 5 1 10W TP 1608 FR2 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 FR3 2007 000034 R CHIP 1OHM 5 1 4W DA TP 3216 FR4 2007 000034 R CHIP 1OHM 5 1 4W DA TP 3216 FR5 2007 000093 R CHIP 20Kohm 5 1 10W TP 1608 FR6 2007 000090 R CHIP 10Kohm 5 1 10W TP 1608 FR7 2007 000093 R CHIP 20Kohm 5 1 10W TP 1608 FR8 2...

Page 42: ...5 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 SC16 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 SC17 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 SC18 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 SC2 2203 001652 C CER CHIP 470nF 80 20 16V Y5V TP 1608 SC23 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 SC24 2203 000681 C CER CHIP 0 027NF 5 50V C0G TP 1608 SC25 2203 000681 C CER CHIP 0...

Page 43: ...C CER CHIP 100nF 10 16V X7R TP 1608 ZC106 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC107 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC11 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC112 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC114 2203 000236 C CER CHIP 0 1NF 5 50V C0G TP 1608 ZC115 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 ZC12 2203 005148 C CER CHIP 100nF 10 16V X...

Page 44: ...0 C AL 1000UF 20 10V LZ TP 10X16MM 5 C1SD12 2305 001029 C FILM LEAD PEF 10nF 10 630V TP 12x9x12 C1SD13 2305 001029 C FILM LEAD PEF 10nF 10 630V TP 12x9x12 C1SD16 2201 000129 C CERAMIC DISC 0 1NF 10 1KV Y5P TP 7X4M C1SF02 2401 002608 C AL 33uF 20 35V GP TP 5x11 5 C1SS01 2301 001157 C FILM LEAD PEF 47nF 10 275V BK 17 5x12 C1SS02 2301 001157 C FILM LEAD PEF 47nF 10 275V BK 17 5x12 C1SS03 2201 000987 ...

Page 45: ... CER CHIP 100nF 10 16V X7R TP 1608 HC191 2203 000384 C CER CHIP 0 015NF 5 50V C0G TP 1608 HC194 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC199 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC206 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC212 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC232 2203 005148 C CER CHIP 100nF 10 16V X7R TP 1608 HC238 2203 005148 C CER CHIP 100nF 10 16...

Page 46: ...1419 BEAD SMD 220 500 TP 0 3 SCL6 3301 001419 BEAD SMD 220 500 TP 0 3 SCL7 3301 001419 BEAD SMD 220 500 TP 0 3 SCL8 3301 001419 BEAD SMD 220 500 TP 0 3 SCL9 3301 001419 BEAD SMD 220 500 TP 0 3 SCN1 3710 001976 CONNECTOR SOCKET 8P 2R 2mm STRAIGHT AUF SCN2 3710 002039 CONNECTOR SOCKET 4P 2R 2mm STRAIGHT AUF SCON1 3710 001977 CONNECTOR SOCKET 12P 2R 2mm STRAIGHT AUF SCON16 3710 001980 CONNECTOR SOCKE...

Page 47: ...2 PCM1742KE 2CH Audio DAC IC701 PT6961 LED Drive DT701 VIC1 LA73054 Video Amp 6CH S W AUDIO L R AUDIO L R ZIC3 MBM29LV800BA IMB Flash Memory ZIC8 TC74VHCT125 Level Shifter SIC1 S5L1455X DVD CD Processor Digital IC802 BU4053 Output Signal Switch IC501 LA72646 Hi FI Audio Processor IC301 LA71750EM Video Signal Processor IC601 uPD790006GF VCR Main Micom AUDIO L A V Common VIDEO AUDIO R Front A V Jack...

Page 48: ...Block Diagram 5 2 Samsung Electronics This Document can not be used without Samsung s authorization MEMO ...

Page 49: ... 1 8W unless otherwise noted Note Special note Most semiconductor devices are electrostatically sensitive and therefore require the special handling techniques described under the electrostatically sensitive ES devices section of this service manual Note Do not use the part number shown on this drawing for ordering The correct part number is shown in the parts list may be slightly different or ame...

Page 50: ...Schematic Diagrams 6 2 Samsung Electronics This Document can not be used without Samsung s authorization 6 1 S M P S ...

Page 51: ...Schematic Diagrams Samsung Electronics 6 3 This Document can not be used without Samsung s authorization 6 2 Power Drive ...

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Page 63: ...Schematic Diagrams Samsung Electronics 6 15 This Document can not be used without Samsung s authorization 6 14 DVD Audio Video ...

Page 64: ...Schematic Diagrams 6 16 Samsung Electronics This Document can not be used without Samsung s authorization 6 15 DVD DVI ...

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