Samsung SV-DVD50 Service Manual
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Samsung SV-DVD50 Service Manual

Samsung SV-DVD50 Service Manual

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See also: Training Manual , Instruction Manual
ELECTRONICS
© Samsung Electronics Co., Ltd. MAR. 2003
Printed in Korea
AK82-00330A
DVD-VCR COMBINATION
Chassis : Diva
SV-DVD50
TRAINING
DVD-VCR COMBINATION
EJECT
STANDBY/ON
PROG
DVD
VCR
AUX
Manual
CONTENTS
3. Product Specification
4. Operating Instructions
7. Circuit Operating Description
9. Troubleshooting

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Summary of Contents for Samsung SV-DVD50

  • Page 1: Table Of Contents

    5. Disassembly and Reassembly 6. Alignment and Adjustment 7. Circuit Operating Description 8. VCR Deck Operating Description EJECT STANDBY/ON PROG 9. Troubleshooting 10. Block Diagram 11. Wiring Diagram 12. Schematic Diagrams © Samsung Electronics Co., Ltd. MAR. 2003 Printed in Korea AK82-00330A...
  • Page 2 IMPORTANT SERVICE GUIDE ◆ MODE SWITCH (PROGRAM SWITCH) ASSEMBLY POINT 1) When installing the ass’y deck on the Main PCB, be sure to align the assembly point of mode switch. ASSEMBLY POINT MAIN PCB Fig. 1 ◆ HOW TO EJECT THE CASSETTE TAPE (If the tape is stuck in the unit) 1) Turn the Gear Worm Œ...

  • Page 3: Precautions

    Metal Part cal return path to the chassis. Any current measured must not exceed 0.5mA. Reverse the instrument power cord plug in the out- ohmmeter let and repeat the test. See Fig. 1-1. Fig. 1-2 Insulation Resistance Test Samsung Electronics...
  • Page 4 (5) antenna wiring. Always inspect in all areas tinuously and new instructions are issued whenev- for pinched, out-of-place, or frayed wiring, Do not er appropriate. change spacing between a component and the printed-circuit board. Check the AC power cord for damage. Samsung Electronics...

  • Page 5: Servicing Precautions

    Components ientified by shading, by( ) or by ( ) in the circuit diagram are important for safety or for the characteristics of the unit. Always replace them with the exact replacement components. Samsung Electronics...
  • Page 6 (6) Do not remove a replacement ESD device from its protective package until immediately before your are ready to install it.(Most replacement ESD devices are packaged with leads electrically short- ed together by conductive foam, aluminum foil or comparable conductive materials). Samsung Electronics...
  • Page 7 ◆ 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. Samsung Electronics...
  • Page 8 3) Make solder land 2 points short on Pick-up. (See Fig. 1-4) 4) Disassembly the Pick-up. Note : If the assembly and disassembly are not done in correct sequence, the Pick-up may be damaged. SOLDER LAND 2 POINTS SHORT PICK-UP ASS'Y Fig. 1-4 Samsung Electronics...

  • Page 9: Reference Information

    Reflective layer Semi-reflective layer Polycarbonate Polycarbonate Dual Side Dual Layer : 17GByte Dual Side Single Layer : 9.5GByte Polycarbonate Polycarbonate Semi-reflective layer Reflective layer Reflective layer Bonding layer Bonding layer Reflective layer Reflective layer Semi-reflective layer Polycarbonate Polycarbonate Samsung Electronics...
  • Page 10 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. Samsung Electronics...
  • Page 11 Recording type Dolby Digital Linear PCM MPEG-1 Layer 2 AUDIO Transmission rate 448Kbps/stream 6.144Mbps/stream 224Kbps 1 Analog CH. Channel 5.1CH/stream 8CH/stream 1 Stream of Dolby Digital 2 Digital CH. (16Bit/44.1KHz) Sampling frequency 48KHz 16, 20, 24Bit/48, 96KHz 16Bit/44.1KHz Samsung Electronics...
  • Page 12 Data loss and enables Time efficient compression. Loss area ◆ MPEG-1 (Fixed compression : Max. 1/140) Amount of data ✓ Frame unit compression. ✓ Compresses all data using the same ratio. Video-CD - Fast movements are jagged, and unnatural Time Samsung Electronics...
  • Page 13 ✓ Various Digital Recordings are possible as shown in the table to the right. Sampling Frequency Bit Rate 16bit 48KHz 20bit 24bit 16bit 96KHz 20bit 24bit ◆ Dolby Digital compatible Audio Mode Channel Format Audio Coding Front Surround (Rear) Remark Mode Mono Stereo Mono Mono Surround Samsung Electronics...
  • Page 14 ◆ 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. Note ; Only enable to be worked correctly by an appropriate data supported this function in Disc. Samsung Electronics...
  • Page 15 ✓ Region 5 : Russia, Eastern Europe, India, Africa. ✓ Region 6 : China. ✓ Region 0 : Worldwide (All Code) ˆ Œ ´ Œ Ø ´ Œ ˇ ˆ ¨ ´ ¨ ◆ Adoptation of the Macrovision System disables the copying on to other media. Samsung Electronics...
  • Page 16 ✓ Different Authoring Process are used accoring to the Software developers, and this may affect the DVD image quality. ⌘ Authoring Process bit stream Video/Audio MPEG-2 Master Encoding Disc Production bit stream Video/Audio Surround Audio AC-3/MPEG Audio Cutting Subtitle Master Encoding Master Multiplexing bit stream Subtitle Subtitle Master Encoding Authoring Process Samsung Electronics...
  • Page 17 3-4 DVD Mechanical Parts - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-8 Notice You can search for the updated part code through ITSELF web site. URL; http://itself.sec.samsung.co.kr Samsung Electronics...

  • Page 18: Cabinet Assembly

    Exploded View and Parts List 3-1 Cabinet Assembly Samsung Electronics...
  • Page 19 Exploded View and Parts List Loc. No Parts No. Description ; Specification Remark Refer to table below ASSY-PANEL FRONT;HIPS V2,SV-DVD50/XEF,03 AK64-00195B DOOR-TRAY;DVD-V3700,ABS94HB,,,,-,SIV, AK64-00334A DOOR-SPRING;DVD-V3500,SWPB,,,,-,, Refer to table below DOOR-CASSETTE;SV-DVD50/XEF,ABS 94HB,,,,- AC61-62032A SPRING ETC-MASK;SV-C130,SUS,4.4,-,-,-,-, AK64-00177B CABINET-TOP;SV-DVD50,PCM,T0.5,-,-,-,SILV AC60-12126A SCREW-BH;-,-,FE,FZY,BH,-,-,4*12,-,- 6003-000275 SCREW-TAPTITE;BH,+,B,M3,L10,BLK ,SWCH101 AC60-10063A SCREW-TAPTITE;-,-,L12,ZPC3,+,-,M3,-,SWRC...

  • Page 20: Vcr Mechanical Parts (Top Side)

    K490 K502 K530 G555 G530 B474 G450 G510 G680 B473 G420 G480 (OPTIONAL) K546 K250 G560 K240 (OPTIONAL) K248 B475 G681 B410 K350 K110 B440 K182 B448 K340 K330 B452 G546 K470 K140 K188 G527 G070 G520 G060 Samsung Electronics...
  • Page 21 BAND-BRAKE ASS’Y;TS-10,-,-,-,-,-,- K330 AC66-30550A LEVER-S.BRAKE ASSY;-,POM+SUS,-,-,-,X-9 K340 AC66-30549A LEVER-T.BRAKE ASSY;-,POM+SUS,-,-,-,X-9 K350 AC61-00106A SPRING ETC-BRAKE;TS-10,SUS304-WPB,-,-,-, K470 AC66-00020A SLIDER-FL DRIVE;TS-10,SECC E20/20,1.0,-, K490 AC61-00120A HOLDER-FL CASS. ASS’Y;TS-10,-,-,-,-,-,- K502 AC61-60561A SPRING ETC-FL.LEVER-LR;X-9,SUS304 WPB,OD K530 AC66-00034A LEVER-FL ARM ASS’Y;TS-10,-,-,-,-,-,-,- K546 AC61-50658A GUIDE-CASS. DOOR;X-9,POM,-,-,-,NTR Samsung Electronics...

  • Page 22: Vcr Mechanical Parts (Bottom Side)

    Exploded View and Parts List 3-3 VCR Mechanical Parts (Bottom Side) G542 B462 B561 B456 B460 B560 B500 B458 B464 B488 B501 B489 B484 B468 K222 K200 K225 K221 B478 B570 Samsung Electronics...
  • Page 23 B501 AC66-00022A LINK-LOADING T;TS-10,SECC E20/20,0.8,-,- B560 AC31-00022A MOTOR BLOWER-CAPSTAN;DMVCMC10A, F2QVB35 B561 3809-001429 CABLE-FLAT;30V,80C,140MM,10P,1.25MM,UL28 B570 AC60-10514A SCREW-CAPSTAN;-,-,M2.6,L6,PH,+,-,-,-,- G542 AC66-60051A BELT-PULLEY;-,5CM-70,2 * 2,-,71.3,-,X-9 K200 AC61-21012A HOLDER-CLUTCH ASSY;X-9,-,-,-,-,-,- K221 AC66-20581A GEAR-CENTER ASSY;-,POM,M=O.5,-,HIGHT T., K222 AC60-30306A FASTENER-WASHER SLIT;-,-,ID2.1,OD5.0,T0. K225 AC66-00006A LEVER-UP DOWN;TS-10,POM,-,-,-,-,NAT,- Samsung Electronics...

  • Page 24: Dvd Mechanical Parts

    Exploded View and Parts List 3-4 DVD Mechanical Parts H107 H105 H106 H102 H103 S.N.A. H108 H104 H241 H211 H206 H206 H203 H207 H202 H205 H204 H210 H209 Samsung Electronics...
  • Page 25 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 SPINDLE;RSM-2606A1,DP-9,350MA,-,-, H209 AK64-00052A CHASSIS-SUB;DP-9,ABS(SR-0320),0,0,0,-,- H210 AK31-00005A MOTOR-FEED ASSY;-,DP-9,-,-,-,-,-,-,-,-,- H211 AK97-00166B ASSY-PICK UP;-,SOH-DSSB,SEM,W/T H241 3809-001409 CABLE-FLAT;30V,80C,230MM,24P,1MM,UL2896 Samsung Electronics...
  • Page 26 Exploded View and Parts List MEMO 3-10 Samsung Electronics...

  • Page 27: Electrical Parts List

    2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C326 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C3S03 2203-000257 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,1608 C327 2203-001211 C-CERAMIC,CHIP;8.2nF,10%,50V,X7R,TP,1608 C3S04 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C328 2203-000257 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,1608 C3S05 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 C329 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 C3S06 2401-001775 C-AL;470nF,20%,50V,GP,TP,4x7,5 C330 2203-000975 C-CERAMIC,CHIP;47nF,10%,25V,X7R,TP,1608, C3S08 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 C331 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 C3S09 2401-001775 C-AL;470nF,20%,50V,GP,TP,4x7,5 Samsung Electronics...
  • Page 28 2401-000118 C-AL;1000uF,20%,10V,GP,TP,10x12.5,5 C525 2401-001250 C-AL;4.7uF,20%,35V,GP,TP,4x5,5 C707 2203-000236 C-CERAMIC,CHIP;0.1NF,5%,50V,C0G,TP,1608 C526 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5 C708 2203-000440 C-CERAMIC,CHIP;1nF,10%,50V,X7R,TP,1608,- C527 2203-000257 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,1608 C709 2203-000440 C-CERAMIC,CHIP;1nF,10%,50V,X7R,TP,1608,- C529 2401-001250 C-AL;4.7uF,20%,35V,GP,TP,4x5,5 C816 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5 C530 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 C817 2203-000257 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,1608 C535 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 C818 2203-000783 C-CERAMIC,CHIP;0.33NF,5%,50V,C0G,TP,1608 Samsung Electronics...
  • Page 29 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 D501 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, FL3A01 2702-000166 INDUCTOR-RADIAL;47uH,5%,6x6.4mm D603 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, 2007-000084 R-CHIP;4.7Kohm,5%,1/16W,DA,TP,1608 D620 0402-000127 DIODE-RECTIFIER;1N4002,100V,1A,DO-41,TP FR10 2007-000090 R-CHIP;10KOHM,5%,1/16W,DA,TP,1608 D688 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, FR11 2007-000090 R-CHIP;10KOHM,5%,1/16W,DA,TP,1608 D692 0402-000127 DIODE-RECTIFIER;1N4002,100V,1A,DO-41,TP FR12 2007-000124 R-CHIP;2.2Kohm,5%,1/16W,DA,TP,1608 D6P01 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, FR13 2007-000124 R-CHIP;2.2Kohm,5%,1/16W,DA,TP,1608 Samsung Electronics...
  • Page 30 1204-001922 IC-VIDEO PROCESS;LA71750M,QFP,100P,-,PLA 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 IC3S01 1204-001921 IC-CHROMA;LA70100M,SOP,30P,375MIL,PLASTI 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 IC4N01 1204-001765 IC-AUDIO PROCESSOR;MSP3417D(PQFP),PQFP,4 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 1204-001766 IC-AUDIO PROCESSOR;MSP3407D(PQFP),PQFP,4 SV-DVD50/XEG/XET Only 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 IC501 1204-001920 IC-AUDIO PROCESSOR;LA72646M,QFP,80P,14X1 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 IC601 AK09-00023A IC MICOM;N128-B08-3BA,SV-DVD50-02,100PI 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5 IC604 AC14-12009W IC-RESET;PST572K,TO-92,R59-1766 2.5V PE10 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5...
  • Page 31 2007-000090 R-CHIP;10KOHM,5%,1/16W,DA,TP,1608 R3A51 2007-000090 R-CHIP;10KOHM,5%,1/16W,DA,TP,1608 R631 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 R3A60 2007-000704 R-CHIP;3.6Kohm,5%,1/16W,DA,TP,1608 R640 2007-000090 R-CHIP;10KOHM,5%,1/16W,DA,TP,1608 R3Q1 2007-000122 R-CHIP;1.2Kohm,5%,1/16W,DA,TP,1608 R641 2007-000077 R-CHIP;470ohm,5%,1/16W,DA,TP,1608 R3Q12 2007-000092 R-CHIP;15Kohm,5%,1/16W,DA,TP,1608 R642 2007-000077 R-CHIP;470ohm,5%,1/16W,DA,TP,1608 R3Q2 2007-000090 R-CHIP;10KOHM,5%,1/16W,DA,TP,1608 R644 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 R3Q3 2007-000076 R-CHIP;330ohm,5%,1/16W,DA,TP,1608 R647 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 Samsung Electronics...
  • Page 32 RE10 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5 R811 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5 R812 2007-001167 R-CHIP;75ohm,5%,1/16W,DA,TP,1608 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 R813 2007-000643 R-CHIP;270ohm,5%,1/16W,DA,TP,1608 2401-002144 C-AL;47uF,20%,16V,GP,TP,5x11,5 R814 2007-000643 R-CHIP;270ohm,5%,1/16W,DA,TP,1608 2401-002144 C-AL;47uF,20%,16V,GP,TP,5x11,5 R815 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 R816 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 R819 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 Samsung Electronics...
  • Page 33 C-CERAMIC,CHIP;0.033NF,5%,50V,C0G,TP,160 SR35 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 2203-002398 C-CERAMIC,CHIP;22nF,10%,50V,X7R,TP,1608 SR36 2007-000074 R-CHIP;100ohm,5%,1/16W,DA,TP,1608 SC31 2203-000626 C-CERAMIC,CHIP;0.022NF,5%,50V,C0G,TP,160 SR39 2007-000116 R-CHIP;120ohm,5%,1/16W,DA,TP,1608 SC32 2203-000815 C-CERAMIC,CHIP;0.033NF,5%,50V,C0G,TP,160 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 SC33 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 SR41 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 SC34 2203-000626 C-CERAMIC,CHIP;0.022NF,5%,50V,C0G,TP,160 SR42 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 SC35 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 SR43 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 Samsung Electronics...
  • Page 34 ZDA885 0403-001083 DIODE-ZENER;UDZ9.1B,9.1V,8.85-9.23V,200m XT601 2801-003318 CRYSTAL-UNIT;32.768KHz,20ppm,28-AAP,12.5 ZDA895 0403-000720 DIODE-ZENER;MTZJ9.1B,9.1V,8.57-9.01V,500 XT602 2801-003139 CRYSTAL-UNIT;8MHz,50ppm,28-AAA,22pF,80oh ZDA896 0403-000720 DIODE-ZENER;MTZJ9.1B,9.1V,8.57-9.01V,500 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 ZDA897 0403-000720 DIODE-ZENER;MTZJ9.1B,9.1V,8.57-9.01V,500 ZC10 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 ZDA898 0403-000720 DIODE-ZENER;MTZJ9.1B,9.1V,8.57-9.01V,500 ZC101 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 ZDS805 0403-001083 DIODE-ZENER;UDZ9.1B,9.1V,8.85-9.23V,200m ZC102 2203-005148 C-CERAMIC,CHIP;100nF,10%,16V,X7R,TP,1608 ZDS806 0403-000720 DIODE-ZENER;MTZJ9.1B,9.1V,8.57-9.01V,500 Samsung Electronics...
  • Page 35 C1SS22 2401-003477 C-AL;330UF,20%,25V,LZ,TP,10X12.5MM, 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 C1SS26 2401-001126 C-AL;330uF,20%,25V,WT,TP,10x12.5,5 ZR40 2007-000074 R-CHIP;100ohm,5%,1/16W,DA,TP,1608 C1SS27 2301-000129 C-FILM,PEF;100nF,5%,50V,TP,10X9X4.3X5,5m ZR41 2007-000078 R-CHIP;1Kohm,5%,1/16W,DA,TP,1608 C901A 2202-002037 C-CERAMIC,MLC-AXIAL;100nF,80-20%,50V,Y5V ZR44 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 CN101 3710-001919 CONNECTOR-SOCKET;16P,1R,2.5MM,ANGLE-F,SN ZR45 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 CN1SS1 3711-000178 CONNECTOR-HEADER;1WALL,2P,1R,3.96mm,STRA ZR46 2007-000070 R-CHIP;0ohm,5%,1/16W,DA,TP,1608 D1P103 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, Samsung Electronics...
  • Page 36 R1SD14 2001-000598 R-CARBON;3.3OHM,5%,1/8W,AA,TP,1.8X3.2MM R1SF05 2001-000527 R-CARBON;22OHM,5%,1/8W,AA,TP,1.8X3.2MM R1SF06 2004-000459 R-METAL;2.2Kohm,1%,1/8W,AA,TP,1.8x3.2m R1SF07 2003-000105 R-METAL OXIDE;0.33ohm,5%,2W,AD,TP,6x16mm R1SQ11 2001-000281 R-CARBON;100OHM,5%,1/8W,AA,TP,1.8X3.2MM R1SR01 2001-000548 R-CARBON;270KOHM,5%,1/8W,AA,TP,1.8X3.2M R1SR02 2001-000548 R-CARBON;270KOHM,5%,1/8W,AA,TP,1.8X3.2M R1SR03 2001-000548 R-CARBON;270KOHM,5%,1/8W,AA,TP,1.8X3.2M R1SS01 2006-000262 R-CEMENT;2.7ohm,10%,2W,CB,TP,7.5x11x20. R1SS08 2001-000793 R-CARBON;47OHM,5%,1/8W,AA,TP,1.8X3.2MM R1SS31 2001-000780 R-CARBON;470OHM,5%,1/8W,AA,TP,1.8X3.2MM R1SS32 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP,1.8X3.2MM 4-10 Samsung Electronics...

  • Page 37: Disassembly And Reassembly

    Œ REMOVE 2 SCREWS ´ RELEASE 2 HOOKS ´ RELEASE 3 HOOKS (Bottom View) Fig. 5-3 Ass’y Front Panel Removal 5-1-4 Function PCB Removal Fig. 5-2 Bottom Cover Removal Œ RELEASE 1 HOOK Fig. 5-4 Function PCB Removal Samsung Electronics...

  • Page 38: Chassis Removal

    5-1-6 VCR Main PCB Removal ΠREMOVE 3 SCREWS When installing the ass'y full deck on the Main PCB, be sure to align the assembly point of mode switch. MODE SWITCH ASSEMBLY POINT Fig. 5-6 VCR Main PCB Removal Samsung Electronics...

  • Page 39: Circuit Board Locations

    Disassembly and Reassembly 5-2 Circuit Board Locations Fig. 5-7 Circuit Board Locations Samsung Electronics...

  • Page 40: Vcr Deck Parts Locations

    5-3-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 5-8 Top parts Location-1 Œ GEAR FL CAM ´ MOTOR LOADING ASS’Y ˇ LEVER FL ARM ASS’Y ¨ HOLDER FL CASSETTE ASS’Y ˆ LEVER FL DOOR Ø SLIDER FL DRIVE Samsung Electronics...
  • Page 41 ´ CYLINDER ASS’Y ˝ GEAR IDLE ˇ ACE HEAD ASS’Y Ô LEVER IDLE ¨ LEVER UNIT PINCH ASS’Y  LEVER T BRAKE ASS’Y ˆ LEVER #9 GUIDE ASS’Y Ò DISK T REEL Ø LEVER TENSION ASS’Y ∏ BAND BRAKE ASS’Y Samsung Electronics...
  • Page 42 Œ GEAR JOINT 1 ´ GEAR JOINT 2 ˇ BRAKET GEAR ¨ MOTOR CAPSTAN ASS’Y ˆ LEVER T LOAD ASS’Y Ø GEAR LOADING DRIVE ∏ LEVER S LOAD ASS’Y ” HOLDER CLUTCH ASS’Y ’ BELT PULLEY ˝ SLIDER CAM Samsung Electronics...
  • Page 43 Lever FL Cassette-R ´ at disassembling and reassembling. Fig. 5-12 Lever FL Door Removal RAIL [B] Œ HOLDER FL ´ LEVER FL CASSETTEE -R CASSETTEE ASS'Y "A" BOSS [A] Fig. 5-11 Holder FL Cassette Ass’y Removal Samsung Electronics...
  • Page 44 Fig. 5-15 Lever FL Arm Ass’y Removal ´ GEAR FL CAM Œ SLIDER FL DRIVE Fig. 5-13 Slider FL Drive Removal Œ GEAR FL CAM GEAR WORM WHEEL POST TIMING POINT Fig. 5-14 Gear FL Cam, Gear Worm Samsung Electronics...
  • Page 45 2) Remove the Loading Motor connecting part of Cable Flat Œ from Connector Waffer ˇ. Œ CABLE FLAT ´ CONNECTOR WAFER ˇ CONNECTOR WAFER Œ GEAR WORM WHEEL Fig. 5-17 Cable Flat Removal Fig. 5-16 Gear Worm Wheel Removal Samsung Electronics...
  • Page 46 Fig.5-18 Motor Loading Ass’y Removal Œ SCREW ´ BRAKET GEAR Fig. 5-19 Bracket Gear, Gear Joint 1,2 Removal Œ GEAR JOINT1 ´ GEAR JOINT2 ˇ SLIDER CAM TIMING POINT 2 TIMING POINT 1 Fig. 5-20 Gear Joint 1,2 Assembly 5-10 Samsung Electronics...
  • Page 47 Fig. 5-21 Gear Loading Drive, Slider Cam, Lever T, S Load Ass’y Removal PIN A PIN D PIN C PIN B ˇ SLIDER CAM Fig. 5-22 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Samsung Electronics 5-11...
  • Page 48 Main Base to the Mark[B]. ˇ BAND BRAKE ASS`Y ´ LEVER TENTION ASS`Y Œ SPRING TENTION LEVER STOPPER "A" Fig. 5-23 Lever Pinch Drive, MARK[B] Lever Tension Drive Removal Fig. 5-24 Lever Tension Ass’y, Band Brake Ass’y Removal 5-12 Samsung Electronics...
  • Page 49 ´ GEAR IDLE "B" ´ GEAR IDLE HOOK "C" HOOK(A) ˇ SPRING BRAKE Œ LEVER S BRAKE ASS'Y HOOK(C) HOOK(B) ´ LEVER T BRAKE ASS`Y Fig. 5-26 Gear Idle Ass’y Removal Fig. 5-25 Lever Brake S, T Ass’y Removal Samsung Electronics 5-13...
  • Page 50 Center Ass'y as shown in detail B. Œ WASHER SLIT ´ HOLDER CLUTCH ASS`Y Fig. 5-27 Disk S, T Reel Removal DETAIL A <BAD> SPRING <GOOD> DETAIL B SPRING <BAD> <GOOD> Fig. 5-28 Holder Clutch Ass’y Removal 5-14 Samsung Electronics...
  • Page 51 ´ GEAR CENTER ASS`Y Fig. 5-31 Guide Cassette Door Removal Fig. 5-29 Lever Up Down Ass’y Removal GEAR CENTER ASS'Y GUIDE LEVER UP DOWN ASS'Y RING GEAR POST HOOK MAIN BASE Fig. 5-30 Lever Up Down Ass’y Removal Samsung Electronics 5-15...
  • Page 52 Œ LEVER UNIT PINCH ASS`Y Œ SPRING #9 GUIDE ´ LEVER #9 GUIDE ASS`Y ´ PLATE JOINT "B" ˇ SPRING PINCH DRIVE Fig. 5-33 Lever #9 Guide Ass’y Removal Fig. 5-32 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal 5-16 Samsung Electronics...
  • Page 53 2) Lift the FE Head ´. 2) Remove the screw Œ. 3) Lift the ACE Head Ass’y ´. Œ FE HEAD Œ SCREW ´ HEAD ACE ASS`Y Fig. 5-34 FE Head Removal Fig. 5-35 ACE Head Removal Samsung Electronics 5-17...
  • Page 54 2) When reinstalling, Don't push down too much on Screw Driver. Œ 3 SCREWS Fig. 5-36 Slider S, T Ass’y Removal ´ PLATE GROUND DECK ˇ CYLINDER ASS'Y Fig. 5-37 Plate Ground Deck, Cylinder Ass’y Removal 5-18 Samsung Electronics...
  • Page 55 Base. There should have no gap between the head of screws and the top side of Main Base. After reinstalling, adjusting the tape transport system again. Œ 3 SCREWS Fig. 5-38 Belt Pulley Removal ´ MOTOR CAPSTAN ASS'Y Fig. 5-39 Motor Capstan Ass’y Removal Samsung Electronics 5-19...
  • Page 56 3) Rotate Gear Worm Œ clockwise using screw driver Œ HOOK again up to the state of eject mode and then pick out the tape.(Refer to Fig.5-42) SLEEVE-HEAD CLEANER FRAME Fig. 5-41 Lever Head Cleaner Ass’y Removal Fig. 5-43 5-20 Samsung Electronics...
  • Page 57 ∆ ∆ ∆ BELT PULLEY HOLDER CLUTCH ASS’Y ∆ GEAR CENTER ASS’Y GEAR IDLE (2Point) LOADING MOTOR BAND BRAKE ASS’Y BRAKE T ASS’Y ◆ : Add Oil ∆ : Cleaning O : Check and replacement in necessary Samsung Electronics 5-21...

  • Page 58: Dvd Deck

    3) Pull the Tray Disc ¨ to disassemble , while simultaneously pushing 2 Stoppers ˆ (left, right) in the direction arrow “C”, “D”. ˆ STOPPER ˇ SLIDER HOUSING "C" ¨ TRAY DISC "B" "A" Œ SCREW DRIVER "D" ´ EMERGENCY HOLE ˆ STOPPER Fig. 5-44 Tray Disc Removal 5-22 Samsung Electronics...
  • Page 59 2) Lift down the Assy P/U Deck ˇ while simultaneously pushing 2 Hooks ¨, ˆ in the direction of arrow “A”, “B”. ¨ HOOK "A" "B" ˆ HOOK <Assembly Point> SLIDER HOUSING Œ DCN2 ˇ ASSY- P/U DECK ´ DCN3 Fig. 5-45 Assy P/U Deck Removal Samsung Electronics 5-23...
  • Page 60 5) Remove 2 Screws Ø and lift down the Motor Load Assy ∏. 6) Remove Clamper Ass’y ”. ´ HOOK "A" "B" Œ BELT ˆ SLIDER HOUSING ¨ GEAR TRAY ” CLAMPER ASSY ˇ PULLEY GEAR ∏ MOTOR LOAD ASSY Ø 2 SCREWS Fig. 5-46 Housing Ass’y Removal 5-24 Samsung Electronics...
  • Page 61 1) Remove the Soldering of Motor Feed (+, - wire) Œ. 2) Remove the 4 Screws ´. 3) Lift up the Ass’y Brkt Deck ˇ. ´ 4 SCREWS ˇ ASSY-BRAK DECK Œ SOLDERING OF MOTOR FEED (+, - WIRE) Fig. 5-47 Sub Chassis Removal Samsung Electronics 5-25...
  • Page 62 ¨ HOLDER CAM SKEW Ø PICK-UP ASS'Y ˆ SHAFT PICK-UP Ô MOTOR SPINDLE ” 2 SCREWS ´ GEAR FEED B ∏ GEAR FEED A ’ MOTOR FEED ASS'Y ˝ 3 SCREWS Œ HOOK "A" Fig. 5-48 Ass’y Brkt Deck Removal 5-26 Samsung Electronics...

  • Page 63: Alignment And Adjustment

    - If the adjustment is completrd, be sure to turn the power off. 6-1-1(a) Location of adjustment button of remote control STANDBY/ON OPEN/CLOSE X-Point (Tracking Center) Adjustment ; NVRAM Option Setting ; Head Switching Adjustment ; Fig. 6-1 Samsung Electronics...
  • Page 64 Alignment and Adjustments 6-1-1(b) TEST location for adjustment mode setting Short-Circuit for few seconds and release. (Just one time) Fig. 6-2 Main PCB (Top View) Samsung Electronics...

  • Page 65: Head Switching Point Adjustment

    2, 4, 5, 6, 7, 9, 10, 11, 12, 13, 15, 32, 34, 36, 38, 40, 42, 45, 47, 61, 63, 65, 69, 72 SV-DVD50/XEC, XEE, XEN 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 32, 34, 36, 38, 40, 42, 45, 47, 61, 63, 65, 69, 72...

  • Page 66: Dvd Adjustment

    Alignment and Adjustments 6-2 DVD Adjustment 6-2-1 Location of Test Point RIC1 RIC1 Fig. 6-5 Location of test Point (Main PCB - Top Side) Samsung Electronics...
  • Page 67 <Table 6-2> 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. 6-6) (See Fig. 6-5) Fig. 6-6 Ass’y Deck (Top Side) Samsung Electronics...
  • Page 68 If you cannot obtain a Flat waveform, then the unit is defective. Note : The Deck must be in a horizontal position. Use both “A” and “B” screws to adjust. Typical Waveform before Adjustment Waveform after Correct Adjustment Fig. 6-7 Envelope Waveform Samsung Electronics...

  • Page 69: Vcr Mechanical Adjustment

    Fig. 6-8 Location of Tape Transport Adjustment PINCH ROLLER FE HEAD CYLINDER ASS'Y GUIDE ROLLER "S" GUIDE ROLLER "T" POST TENSION #8 GUIDE POST #9 GUIDE POST #3 GUIDE POST MAIN BASE ACE HEAD CAPSTAN SHAFT Fig. 6-9 Tape Travel Diagram Samsung Electronics...
  • Page 70 HEIGHT ADJUST X-POSITION ADJUSTING SLIT SCREW (B) SCREW (D) AZIMUTH ADJUST X-POSITION LOCKING Fig. 2-10 Location of ACE Head Adjustment Screw AUDIO HEAD VIDEO HEAD 0 ~ 0 .25 mm CONTROL HEAD Fig. 2-11 ACE Head Height Adjustment Samsung Electronics...
  • Page 71 Fig. 6-12 Tape Guide Check c. AUDIO AZIMUTH ADJUSTMENT 1) Load alignment tape (Mono scope) and playback the 6KHz signal. 2) Connect channel-1 scope probe to audio output. 3) Adjust screw (B) to achieve maximum audio level. (See Fig. 6-10) Samsung Electronics...
  • Page 72 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) CONTROL PULSE HEAD SWITCHING ENVELOPE AUDIO OUTPUT Fig. 6-13 Location of Test point (Main PCB-Top View) 6-10 Samsung Electronics...
  • Page 73 5) If the section B in Fig. 6-15 does not meet the specification, adjust the guide roller T up or down. a b c d c,b,d/a Fig. 2-14 Envelope Waveform Adjustment H'D SWITCHING PULSE ENVELOPE Fig. 2-15 Adjustment Points Samsung Electronics 6-11...
  • Page 74 ) driver to obtain a flat video RF envelope as shown in Fig. 6-16. IDEAL ENVELOPE S HEIGHT TOO HIGH S HEIGHT TOO LOW T HEIGHT TOO HIGH T HEIGHT TOO LOW GUIDE ROLLER S GUIDE ROLLER T Fig. 6-16 Guide Roller S, T Height Adjustment 6-12 Samsung Electronics...
  • Page 75 2) If excessive tape wrinkle is observed, perform the following adjustments in Playback mode : ◆ Tape wrinkle at the guide roller S, T section : Linearity adjustment. ◆ Tape wrinkle at tape guide flange : ACE head assembly coarse adjustment. Samsung Electronics 6-13...
  • Page 76 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. <Table 6-3> MODE TORQUE g/cm GAUGE 42 ± 11 Cassette Torquemeter 145 ± 30 Cassette Torquemeter 6-14 Samsung Electronics...

  • Page 77: Vcr Deck Operating Description

    Tension post Tape sensor Tape loading Reel brake REC-inhibiting SW Pinch lever Idle gear Cassette holder Loading motor cam gear Reel sensor (Front loading setion) (Loading motor drive section) (Front loading setion) Fig. 8-1 Basic Configuration of Mechanism Samsung Electronics...
  • Page 78 Fig. 8-2 Tape Path System Cylinder T slant guide S slant guide ACE head Tension post Capstan No.9 guide Pinch roller FE head No.8 guide T guide roller S guide roller show the locations to be adjusted. Fig. 8-3 Guide Path System Samsung Electronics...
  • Page 79 ACE head No. 8 guide Pinch roller Cylinder Capstan No. 9 guide Tape guide Tension post Tape guide S (Supply) reel disc Idle gear Capstan belt Clutch gear (Clutch mechanism) T (Tape-up) reel disc Fig. 8-4 Reel Drive System Samsung Electronics...
  • Page 80 (9) When the cassette is out, the reverse steps of the above procedure are carried out. Cassette Loading Complete Tape Loading Full Loading Mode Fig. 8-5 Loading motor FL arm lever FL drive slider FL camgear Worm wheel Fig. 8-6 Drive Transmission Path Samsung Electronics...
  • Page 81 No. 8 guide FE head Pinch roller Cylinder Capstan No. 9 guide Tape guide S guide roller Tape guide S (Supply) reel disc Idle gear Capstan belt Clutch gear (Clutch mechanism) T (Tape-up) reel disc Fig. 8-7 Cassette IN/OUT Mode Samsung Electronics...
  • Page 82 In this case, tape tension applied to the cylinder is decreased to protect the tape and to prevent the tape from scratches. Samsung Electronics...
  • Page 83 FE head No. 8 guide Pinch roller Cylinder Capstan No. 9 guide Tape guide Tension post Tape guide S (Supply) reel disc Idle gear Capstan belt Clutch gear (Clutch mechanism) T (Tape-up) reel disc Fig. 8-9 FF/REW Mode Samsung Electronics...
  • Page 84 FE head No. 8 guide Pinch roller Cylinder Capstan No. 9 guide Tape guide Tension post Tape guide S (Supply) reel disc T (Tape-up) reel disc Clutch gear (Clutch mechanism) Capstan belt Idle gear Fig. 8-10 Record/Playback Mode Samsung Electronics...
  • Page 85 FG pulse CTL pulse (Linear time counter) AUDIO Control IIC BUS VIDEO REC control TUNER Cylinder motor control Cylinder Cylinder motor motor drive POWER ON/OFF REC mute FG/PG pulse TV/VCR Fig. 8-11 System Control Block Diagram Samsung Electronics...
  • Page 86 The mechanism operates as shown in Fig. 8-13 according to the timing chart in Fig. 8-14. Note : The Start Sensor is actuated by the horizontal moving of Slider FL Drive and turned on or off by insertion or ejec- tion of a cassette. 8-10 Samsung Electronics...
  • Page 87 T loading lever assembly S loading lever assembly Loading motor Loading drive gear FL cam gear Joint gear 1 Cam slider T brake S brake Pinch drive lever Tension drive lever Joint gear 2 Fig. 8-13 Mechanical Operation Samsung Electronics 8-11...
  • Page 88 VCR Deck Operating Description Fig. 8-14 Mecha Timing Chart 8-12 Samsung Electronics...
  • Page 89 - S BRAKE is detached from S REEL DISC completely. So S REEL DISC is free. Fig. 8-15 2) SOFT BRAKE(during LOADING, STOP 1, FF/REW 1) - The small load is given to S REEL DISC. Fig. 8-16 Samsung Electronics 8-13...
  • Page 90 - T BRAKE is detached from T REEL DISC completely. So T REEL DISC is free. Fig. 8-18 2) SOFT BRAKE (UNLOADING Completion ,STOP 1, FF/REW 2 ) - The small load is given to T REEL DISC. Fig. 8-19 8-14 Samsung Electronics...
  • Page 91 VCR Deck Operating Description 3) REVERSE SEARCH BRAKE (RPS) - The medium load is given to T REEL DISC. Fig. 8-20 4) MAIN BRAKE (on the loading, STOP 2) - The large load is given to T REEL Fig. 8-21 Samsung Electronics 8-15...
  • Page 92 The circuit configuration of the mode sensor drive is shown in Fig. 8-22. CN604 Load (+) IC601 CAPSTAN MOTOR L.M B+ Loading motor DRIVE IC LM L 59 Load (-) AL 5V LM R AL 5V SW603 Mode SW Fig. 8-22 Mode Sensor Drive 8-16 Samsung Electronics...
  • Page 93 After 300msec the loading motor rotates in the forward direction and enters the tape loading operation. T slider assembly S slider assembly No. 9 guide lever Tension arm T brake (soft) S brake (off) Idle lever assembly Fig. 8-23 Cassette-Loading Mode (Position I) Samsung Electronics 8-17...
  • Page 94 ˇ The tension post touches the tape, band brake force is applied, and the tension servo brake mechanism actuates. ¨ Brakes for the reel discs are all off. T slider assembly S slider assembly Tension lever No. 9 guide lever T brake (soft) S brake (off) Fig. 8-24 Tape Loading Operation (Position II) 8-18 Samsung Electronics...
  • Page 95 OFF --> ON, and the capstan motor stops. (2) IC601 makes the loading motor stop after 150ms passed from sensing “ON”. (3) Also IC601 makes the loading motor rotate in the forward direction after 120ms passed. Samsung Electronics 8-19...
  • Page 96 4) The S, T soft brakes are being applied. T slider assembly S slider assembly Pinch assembly (off) Tension lever (off) T brake (soft) S brake (off) Fig. 8-25 Stop Mode (Position V) 8-20 Samsung Electronics...
  • Page 97 IV (playback mode), thus setting the playback standby mode. T slider assembly Pinch assembly (OFF) Tension lever (OFF) No. 9 guide lever (OFF) S brake (OFF) T brake (soft brake) Fig. 8-26 FF/REW 2 Mode (Position VII) Samsung Electronics 8-21...
  • Page 98 (6) The recording speed data identified by IC601 is displayed in the Led module. Pinch assembly (ON) Tension lever (ON) No. 9 guide lever (OFF) S brake (OFF) T brake (OFF) Fig. 8-27 Playback Mode (Position IV) 8-22 Samsung Electronics...
  • Page 99 The tape is taken up at a constant torque by the clutch mechanism. (The mechanical operation is the same as that in the playback mode.) (4) The recording speed data identified by IC601 is displayed on the Led module. Samsung Electronics 8-23...
  • Page 100 (5) The recording speed data identified by IC601 is displayed on the Led module. Pinch assembly (ON) Tension lever (OFF) No. 9 guide lever (ON) S brake (OFF) T brake (RPS brake) Fig. 8-28 RPS Mode (Position III) 8-24 Samsung Electronics...
  • Page 101 (3) After completion of the rewinding for synchronous editing, the cam slider is in the position IV (playback mode), the cylinder motor is rotating, and the capstan motor and the loading motor stop. Samsung Electronics 8-25...
  • Page 102 VCR Deck Operating Description MEMO 8-26 Samsung Electronics...
  • Page 103 Circuit Operating Descriptions 7. Circuit Operating Descriptions 7-1 Power Supply (Free Voltage) (1) Comparsion between Linear Power Supply and S.M.P.S. (a) Linear Vout Vreg REGULATOR Common power (Ex.220V 50Hz) – – (Np) (Ns) Fig. 7-1 Linear Power Supply ◆ Waveform/Description Input : Common power to transformer (Vp).
  • Page 104 Circuit Operating Descriptions ◆ Advantages and disadvantages of linear power supply Change by common power 1) Advantages : Little noise because the output waveform Vout of transformer is sine wave. 2) Disadvantages : Vreg Œ Additional margin is required because Vs is chan- ged (depending on power source).
  • Page 105 Circuit Operating Descriptions (2) Circuit description (FLY-Back PWM (Pulse Width Modulation control) (a) AC Power Rectification/Smoothing Terminal 1) D1SS01, D1SS02, D1SS03, D1SS04 : Convert AC power to DC(Wave rectification). 2) C1SS10 : Smooth the voltage converted to DC. 3) L1SS01, L1SS02, C1SS01, C1SD02 : Noise removal at power input/output. 4) R1SS01 : Rush current limit resistance at the moment of power cord insertion.
  • Page 106 Circuit Operating Descriptions (d) Feedback Control Circuit Trans D1SS13 L1SS05 5.8V IC1SS2 C1SS16 C1SS35 DRAIN & R1SS31 R1SS34 R1SS33 IC1S02 C1SS27 R1SS32 1st GND IC1S03 2.5V R1SS35 2nd GND Fig. 7-8 1) F/B terminal of IC1SF01 determines output duty cycle. 2) C-E(Collector-Emitter) of IC1SF01 and F/B potential of IC1SF01 are same.
  • Page 107 Circuit Operating Descriptions (3) Internal Block Diagram (a) Internal Block Diagram of S.M.P.S. Circuit Smoothing Circuit 33V Rectified Smoothing Circuit Noise Converter Removal 24V Rectified (SNUBBER) Smoothing Circuit Rectified Circuit 5V Rectified 5V Rectified VoltageCircuit(X2) Smoothing Circuit PWM Control 9V Rectified Line Filter Circuit VoltageCircuit...
  • Page 108 Circuit Operating Descriptions 7-2 System Control REMOCON SYSCON DISPLAY MECHA BLOCK IIC COMMON Hi-Fi IC MICOM SERVO EPROM IC TM BLOCK SERVO BLOCK AV BLOCK OSD BLOCK Fig. 7-11 Micom Block Diagram (1) Outline The system control circuit inputs the commands given by the operator to set the mechanism and circuit to the commanded mode.
  • Page 109 Circuit Operating Descriptions Fig. 7-12 Block Diagram...
  • Page 110 Circuit Operating Descriptions (2) Mechanism/Circuit Control When the u-COM inputs operator’s commands via the key input or remote input, the mechanism and circuits are set to the command mode. This function controls mechanism/servo section and audio/video processing section. 1) Cassette Loading Control Controls loading and ejection of a cassette and determines the mechanism operation mode;...
  • Page 111 Circuit Operating Descriptions (3) Program SW Input The mechanism state for each mode is shown in table 7-1 below. The mechanism state is classified into position, and correlation between the switch position and mechanism state is shown in table 7-1, also. Table 7-1 : Prog.
  • Page 112 Circuit Operating Descriptions (5) Stop Mode The VCR enters the stop mode when the stop button is pressed during playback, record, rewind and fast forward mode. When trouble is detected, the VCR enters the stop mode to protect the tape and mechanism or when the tape reaches the end, etc.
  • Page 113 Circuit Operating Descriptions (11) Slow Mode • State input ; Press the still button and next press the FF button on the remote control. • Indication output ; First digit rotates in LED display. • Output at ; IC601 Pin 25 (CAP F/R) : Hi (12) Frame Advance Mode Views one stop-action “frame”...
  • Page 114 Circuit Operating Descriptions (16) Fast Forward Mode Tape fast forward operation using capstan motor. • State input ; Press the rewind button in the stop or fast forward modes. • Indication output ; First digit rotates in LED display. • Output at ; IC601 Pin 25 (CAP F/R) : Hi (17) Rewind Mode...
  • Page 115 Circuit Operating Descriptions (20) Trouble Detection The trouble detection circuits are provided to protect the from damage (Fig. 7-15). The reel lock sensor detects incorrect rotation of supply and take up reel. The reel lock sensor consists of the disk and photo sensor installed at the bottom of the reel disk.
  • Page 116 Circuit Operating Descriptions (23) Tape Counter Control Fig. 7-16 is a simplified diagram of the tape counter control circuit. The tape counter in the u-COM counts the control pulses derived from control head. The control signal on the control track of the tape is picked up by the control head and supplied to pins 85, 86 of IC601.
  • Page 117 Circuit Operating Descriptions (24) Timer/OTR Control The timer can preset 6 programs in one year including daily and weekly programs. Express recording lets the operator record up to 9 hours without programming the timer. (25) Clock Display The clock generator inside of the u-COM counts the oscillation signal of XT601 for the timer clock data. (26) Power Failure Detection u-COM goes to the power failure mode when the 61 port is lower than 4/5 of AD Vcc level.
  • Page 118 Circuit Operating Descriptions 7-3 Servo (1) Outline The servo system is divided into three loops. The cylinder servo controls the rotation of video heads, the capstan servo controls the tape speed, and the tension. In addition it’s necessary to control cylinder motor, especially during trick play in 4H’D models.
  • Page 119 Circuit Operating Descriptions Fig. 7-18 Block Diagram 7-17...
  • Page 120 Circuit Operating Descriptions (2) Capstan Speed Error Detector The capstan speed control operates so as to hold the capstan at a constant rotational speed, by measuring the peri- od of the CFG signal. A digital counter detects the speed deviation from a preset value. The speed error data is added to phase error data in a digital filter.
  • Page 121 Circuit Operating Descriptions (5) Drum Phase Error Detector Drum phase control must start operating after the drum motor is brought to the correct rotational speed by the speed control system . Drum speed control works as follows in record and playback. ◆...
  • Page 122 Circuit Operating Descriptions (7) V-Lock Phase V-lock pulse is used for adjusting the picture’s vertical vibration in trick play (still,slow). The value is varied by tracking up/down key in trick play mode the variable range from 3H to 12H . In trick play mode, the V-LOCK pulse position of CH-1 is variable but CH-2 is fixed.
  • Page 123 Circuit Operating Descriptions 7-4 VCR Video (1) Luminance Signal Recording System CANAL V IN AV V IN AUX V IN TU V OUT VIDEO F. B YNR Y/C 3 MHz CLAMP COMB AV VIDEO OUT QV/QH INSERT CANAL V OUT MAIN DETAIL CLAMP...
  • Page 124 Circuit Operating Descriptions 2) Main Emphasis Circuit The dynamically emphasized luminance signal is now supplied to the main emphasis circuit where all the high frequency components of the signal are boosted more than the low frequency components. The boosting action is required for the high frequency components because in the FM recording method, the noise of the playback signal increases in proportion to the modulated signal frequency or low level signal.
  • Page 125 Circuit Operating Descriptions (2) Luminance Signal Playback System PB EQ DOUBLE PHASE LIMIT DEMOD MA2N FM-EQ DE-EMPHA 91 92 91 93 3.5MHZ FM AGC CLAMP 91 90 YNR Y/C 91 43 DEEMPHA COMB H'D S/W 91 46 NOISE H'D AMP S/W CANCELL PICTURE 6dB AMP...
  • Page 126 Circuit Operating Descriptions 4) FM DEMODULATOR The FM demodulator consists of a stable mono multivibrator balanced modulator (BM) and a LPF. The FM demodulator circuit first converts the FM signal to a pulse width modulator signal. Then the circuit smoothes the PWM signal to demodulate the video signal.
  • Page 127 Circuit Operating Descriptions (3) Chroma Signal Recording System CANAL V IN AV V IN AUX V IN TU V AT VIDEO YNR Y/C 4.43MHz COMB MAIN 1.3MHz BURST CONVERTER EMPHA SP H'D CURRENT REC LUMINANCE SLP H'D IC301 LA71750/30M Fig. 7-23 Chrominance Record Process 1) Outline Fig.
  • Page 128 Circuit Operating Descriptions 2) ACC (Automatic Color Gain Control) Circuit The ACC is used as burst ACC in the LP mode, however it is also used for peak ACC in the SP/SLP mode. The purpose of using two different ACC operations is to improve the overall Chroma S/N ratio during playback. In SP and SLP, there is H-sync alignment.
  • Page 129 Circuit Operating Descriptions (4) Chroma Signal Playback System 91 96 91 92 91 93 1.3 MHz BURST MAIN ACC AMP UP AMP CONV 91 90 BURST 4.43MHz YNR Y/C 4.43MHz DE-EMPHA BPF 1 COMB BPF 2 H'D S/W H'D AMP S/W COLOR PB AMP Y/C MIX...
  • Page 130 Circuit Operating Descriptions 7-5 Hi-Fi Audio (1) Outline Hi-Fi circuit consists of HiFi audio LPF, VCO, BPF, FM detect circuit and switching noise compensator, PRE-AMP etc. Linear audio consists of an ALC circuit,REC EQ circuit and a PB EQ circuit. Hi-Fi and Linear audio share the same input selector,output selector and mute circuit.
  • Page 131 Circuit Operating Descriptions (2) Block Description 1) Input Selector Input selector outputs 1 signal from 4 different signals received. It outputs 1 selected signal from tuner, rear, front. 2) Normal(Linear) Selector Two signals,L-CH and R-CH are inputed to Hi-Fi IC.But,linear audio is capable of receiving only one signal. Therefore the 2 input signals must be selected.
  • Page 132 Circuit Operating Descriptions 14) Hold Pulse It makes standard signal(Pulse) to compensate SW noise. 15) DET(Hi-Fi/LINEAR) From the Hi-Fi envelope inputed from pre-amp,it decides whether the signal passing through L-CH BPF is Hi-Fi or LINEAR tape it’s size(the signal passing through BPF is below 10mVpp, it is not Hi-Fi, therefore, it output linear) 16) DOC(Drop Out Compensation) If demodulation is conducted without properly treating the damage on Hi-Fi envelope caused by scratch on...

  • Page 133: Block Diagram

    Circuit Operating Descriptions 7-6 Linear Audio (1) Block Diagram OUTPUT 12KHz HEAD BIAS LINE PB ON 60KHz REC ON PB ON INPUT Fig. 7-27 Block Diagram (2) Block Description 1) ATT (Attenuation) Line amp is shared between PB mode and E/E mode, which reduces the recorded signal by 20dB and resister. 2) ALC (Auto Level Control) If the signal level is lower than the reference signal (-6dBm) level, the output signal will equal the input signal.
  • Page 134 Circuit Operating Descriptions 5) PB AMP The diagram to the left is the playback amp and the gain input/output are as PB AMP follows. INPUT OUTPUT Av = 1 + The playback characteristic of VHS format can be satisfied by using Z the above equation.
  • Page 135 Circuit Operating Descriptions 7-7 TM (1) Outline RF and frequency synthesized tuning system General description : The receiving circuit consists of both ANT input and output circuits, channel selection cir- cuit, PIF circuit and SIF circuit. The receiving circuit selects a desired broadcast signal from TV signals induced on an antenna and sends stable video and audio signals to their respective processing circuits.
  • Page 136 Circuit Operating Descriptions (3) Modulator Section A. RF Modulator generates, from a baseband video and audio signal, PLL frequency synthesized RF TV channel signal in VHF band. (3ch = 61.25MHz, 4ch = 67.25MHz) B. PLL synthesized audio FM (4.5MHz). C. The 4.43MHz reference frequency for PLL can either be generated internally or input from an external source. VIDEO IN TO TUNER SECTION ANTENNA...
  • Page 137 Circuit Operating Descriptions (4) Tuner Block A. Low pass filter & high pass filter This consists of IF trap circuit and UHF & VHF separation circuit. If the input signal is IF(45.75MHz), this filter prevents interference. B. Single tune & RF AMP This consists of a filter circuit, RF AMP, impedance conversion circuit, image trap and a single tuning circuit.
  • Page 138 Circuit Operating Descriptions (5) IF Block A. SAW FILTER It passes only needed band of the signal that is converted to IF frequency and decrease other band to minimize the effect of adjacent channel. B. IF AMP IF signal ,which is selected in SAW FILTER, is amplified in IF amp frequency enough to be detected. The IF AMP has parallel inputs &...
  • Page 139 Circuit Operating Descriptions 7-8 MTS 1) Outline The Multiplex signal that come from Tuner/demode block(TM block IF DEMOD) enters into the MTS IC11 pin and sap or stereo signal can be detected. The components of the signal are roughly separated 4 areas(stereo,dbx,matrix and sap) 2) STEREO BLOCK (a) L+R(Main)
  • Page 140 Circuit Operating Descriptions PEAK DEV AM-DSB-SC dbx-TV TELEMETRY dbx-TV NR FM 3KHz FM 10KHz 50-15KHz 50-10KHz 6.5f = f15.734KHz Fig. 7-34 Base Band Spectrum 7-38...
  • Page 141 Circuit Operating Descriptions 7-9 OSD The on screen display circuit consist of a character generator decoder, video mixer, sync separator and sync gener- ator, sync detector circuit. The data is decoded and generates characters in syncro with composite video signal applied pin 19. Also the sync detector circuit discriminates the presence of a video signal by detecting sync, if no sync is detected, a blue screen is displayed.
  • Page 142 Circuit Operating Descriptions 7-10 SECAM (1) REC Mode Fig. 7-36 Signal flow in REC mode Video signals which input to Pin 16, pass 4.3MHz BPF, unnecessary component (ex : sync signal) is removed, and take component of chroma signal. And to be flat the characteristics when it is sending by REC-BELL circuit. This REC-BELL circuit is automatically adjusted to be 4.286MHz for center frequency.
  • Page 143 Circuit Operating Descriptions (3) Block Diagram Fig. 7-38 LA70100M Block Diagram 7-41...
  • Page 144 Circuit Operating Descriptions 7-11 Input-Output The output signal of DVD and VCR are inputted to IC802. Because has no copy function. The output signals are detemined by only IC802. JC802 RCA JACK "A/V OUT" IC801 JC801 JK701 SCART JACK SCART2 FRONT JACK A/V OUT "A/V IN"...
  • Page 145 Circuit Operating Descriptions 7-12 DVD System Control (1) Outline The main micom peripheral circuit is composed of 4M EDO ROM (SIC2) for Microcode and data save, 2Kbit EE-PROM (ZIC7) for permanent storage of data needed at power off, 64Mbit SDRAM (ZIC2) for temporary data read and write.
  • Page 146 Circuit Operating Descriptions (3) Waveform Description When micom accesses each device sharing bus, it falls the chip select signal of corresponding chip to (/dspcs : ZIC1-123, /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.
  • Page 147 Circuit Operating Descriptions 7-13 DVD RF (1) RIC1 (S5L1463) S5L1463 is combined with S5L1455 as bipolar IC developed for DVD SERVO system. Main features include DVD waveform equalizing, CD waveform equalizing, focus error signal generation, 3-beam tracking error signal generation, DPD 1-beam tracking error, defect, envelope, MIRR output, Laser Power Control, etc.
  • Page 148 Circuit Operating Descriptions b B v EQIN REAGCO RFEQO RF EQ Fig. 7-43 The control parameters of DVD EQ and CD EQ are as follows. (1) DVD CD EQ control parameter Œ EQG_CEN & EQ_BOOST : Changes the gain of peak frequency with EQ frequency characteristic. ´...
  • Page 149 Circuit Operating Descriptions 7-14 DVD Servo (1) Outline SERVO system of DVD is Compoced of Focusing SERVO, Tracking SERVO, SLED Linked SERVO and CLV SERVO (DISC Motor Control SERVO). 1) Focusing SERVO : Focuses the optical spot output from object lens onto the disc surface. Maintains a uniform distance between object lens of Pick-up and disc (for surface vibration of disc).
  • Page 150 Circuit Operating Descriptions (3) Operation 1) FOCUSING SERVO (a) Focus Input The focus loop is changed from open loop to closed loop, and the triangular waveform moves the object lens up and down (at pin 13 of SIC1 during Focus SERVO ON.) At that time, S curve is input to pin 8 of SIC1. ABCD (pin 34 of RIC1) signal, summing signal of PD A, B, C, D, is generated, and zero cross(1.65V) point occurs when S curve is focused and ABCD signal exceeds a preset,constant value.
  • Page 151 Circuit Operating Descriptions B. SEARCH Mode : Search mode : Fine seek,(Moving the tracking actuator slightly little below 255 track) and coarse search, moving much in use of sled motor. The coarse search will be described in sled linked servo and now, the fine seek is explained shortly.
  • Page 152 Circuit Operating Descriptions 7-15 DVD Data Processor (1) Outline SIC1(S5L1455) performs Sync detection, EFM demodulation and error correction and Spindle motor control (CLV control) after inputting sliced EFM signal of RF signal at disc playback and EFM read clock (PLCK) signal generat- ed from PLL.
  • Page 153 Circuit Operating Descriptions (3) Waveform Description It measures the timing that data processed in SIC1 at DVD playback. Fig. 7-47 • CH1 : STROBE (SIC1-123, CLOCK) • CH2 : REQ (SIC1-124, DATA REQUEST) • CH3 : DACK (SIC1-125, DATA ACKNOWLEDGE) •...
  • Page 154 Circuit Operating Descriptions 7-16 DVD Video (1) Outline ZIC1(A/V decoder with video encoder) diverges from the 27MHz crystal, then generates VSYNC and HSYNC. ZIC1(A/V decoder with video encoder) does RGB encoding, copy guard processing and D/A conversion of 8bit video data internally inputted from video decoder block by Micro Process block. Video signal converted into analog signal is outputted via amplifier of analog part.

  • Page 155: Dvd Audio

    Circuit Operating Descriptions 7-17 DVD Audio (1) Outline A/V decoder (ZIC1 ; Vaddis 5E) is supply to DATA 0 for 2-channel mixed audio output. The audio data transmitted from A/V decoder (ZIC1 ; Vaddis 5E) are converted into analog signal via audio D/A converter and outputted via post filter and amplifier.
  • Page 156 Circuit Operating Descriptions (3) DVD Audio Output Source Data Types : MPEG-1,-2, Dolby Digital, CD-DA, LPCM, WMA ZIC2 (LOCAL DRAM) ZIC1 (Vaddis5E ; A/V DECODER) HOST or DVD/CD INTERFACE RECEIVER IEC-958/1937 IEC-958/1937 AUDIO INPUT DECODER OUTPUT PROCESS INTERFACE BUFFER (IEC-958/1937) Compressed Data WMA 2-Channel LPCM, Decoded (MPEG, Dolby Digital),...
  • Page 157 (uPD790006GF) IC602 EEPROM (S5L1455X) (TC74VHCT125) ZIC7 (24C02) DVD & CD Processor & Digital Level Shifter VCR Main Micom EPROM SIC2 4M EDO RAM IC701 ZIC3 (PT6959) (MBM29LV800BA) LED Drive IMB Flash Memory Front A/V Jack STEREO (DT701) Samsung Electronics 10-1...
  • Page 158 Block Diagram MEMO 10-2 Samsung Electronics...

  • Page 159: Wiring Diagram

    11. Wiring Diagram Samsung Electronics 11-1...
  • Page 160 Block Diagram MEMO 11-2 Samsung Electronics...

  • Page 161: Schematic Diagrams

    12-14 DVD Audio/Video - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12-15 <Component Side> Samsung Electronics 12-1...

  • Page 162: Schematic Diagrams

    Schematic Diagrams 6-1 S.M.P.S. 12-2 Samsung Electronics...

  • Page 163: Power Drive

    Schematic Diagrams 6-2 Power Drive Samsung Electronics 12-3...

  • Page 164: Diaplay/Function

    Schematic Diagrams 6-3 Display/Function DT701 12-4 Samsung Electronics...

  • Page 165: System Control/Servo

    Schematic Diagrams 6-4 System Control/Servo Samsung Electronics 12-5...

  • Page 166: A/V

    Schematic Diagrams 6-5 A/V 12-6 Samsung Electronics...

  • Page 167: Hi-Fi

    Schematic Diagrams 6-6 Hi-Fi Samsung Electronics 12-7...

  • Page 168: A2/Nicam

    Schematic Diagrams 6-7 A2/NICAM 12-8 Samsung Electronics...

  • Page 169: Secam (Option)

    Schematic Diagrams 6-8 SECAM (Option) Samsung Electronics 12-9...

  • Page 170: Osd/Vps/Pdc

    Schematic Diagrams 6-9 OSD/VPS/PDC 12-10 Samsung Electronics...
  • Page 171 Schematic Diagrams 6-10 TM Samsung Electronics 12-11...

  • Page 172: Input-Output

    Schematic Diagrams 6-11 Input-Output 12-12 Samsung Electronics...

  • Page 173: Dvd Av-Decoder

    Schematic Diagrams 6-12 DVD AV-Decoder Samsung Electronics 12-13...

  • Page 174: Dvd Servo

    Schematic Diagrams 6-13 DVD Servo 12-14 Samsung Electronics...

  • Page 175: Dvd Audio/Video

    Schematic Diagrams 6-14 DVD Audio/Video Samsung Electronics 12-15...
  • Page 176 Schematic Diagrams MEMO 12-16 Samsung Electronics...
  • Page 177 9. Troubleshooting Samsung Electronics...
  • Page 178 Troubleshooting Samsung Electronics...
  • Page 179 Troubleshooting Samsung Electronics...
  • Page 180 Troubleshooting Samsung Electronics...
  • Page 181 Troubleshooting Samsung Electronics...
  • Page 182 Troubleshooting Samsung Electronics...
  • Page 183 Troubleshooting Samsung Electronics...
  • Page 184 Troubleshooting Samsung Electronics...
  • Page 185 Troubleshooting Samsung Electronics...
  • Page 186 Troubleshooting 9-10 Samsung Electronics...
  • Page 187 Troubleshooting Samsung Electronics 9-11...
  • Page 188 Troubleshooting 9-12 Samsung Electronics...
  • Page 189 Troubleshooting Samsung Electronics 9-13...
  • Page 190 Troubleshooting 9-14 Samsung Electronics...
  • Page 191 Troubleshooting Samsung Electronics 9-15...
  • Page 192 Troubleshooting 9-16 Samsung Electronics...
  • Page 193 Troubleshooting Samsung Electronics 9-17...
  • Page 194 Troubleshooting 9-18 Samsung Electronics...
  • Page 195 4. Operating Instructions Samsung Electronics...
  • Page 196 Operating Instructions Samsung Electronics...
  • Page 197 Operating Instructions Samsung Electronics...
  • Page 198 Operating Instructions Samsung Electronics...
  • Page 199 Operating Instructions Samsung Electronics...
  • Page 200 Operating Instructions Samsung Electronics...
  • Page 201 Operating Instructions Samsung Electronics...
  • Page 202 Operating Instructions Samsung Electronics...
  • Page 203 Operating Instructions Samsung Electronics...
  • Page 204 Operating Instructions 4-10 Samsung Electronics...
  • Page 205 Operating Instructions Samsung Electronics 4-11...
  • Page 206 Operating Instructions 4-12 Samsung Electronics...
  • Page 207 Operating Instructions Samsung Electronics 4-13...
  • Page 208 Operating Instructions 4-14 Samsung Electronics...
  • Page 209 Operating Instructions Samsung Electronics 4-15...
  • Page 210 Operating Instructions 4-16 Samsung Electronics...
  • Page 211 Operating Instructions Samsung Electronics 4-17...
  • Page 212 Operating Instructions 4-18 Samsung Electronics...
  • Page 213 Operating Instructions Samsung Electronics 4-19...
  • Page 214 Operating Instructions 4-20 Samsung Electronics...
  • Page 215 Operating Instructions Samsung Electronics 4-21...
  • Page 216 Operating Instructions 4-22 Samsung Electronics...
  • Page 217 Operating Instructions Samsung Electronics 4-23...
  • Page 218 Operating Instructions 4-24 Samsung Electronics...
  • Page 219 Operating Instructions Samsung Electronics 4-25...
  • Page 220 Operating Instructions 4-26 Samsung Electronics...
  • Page 221 Operating Instructions Samsung Electronics 4-27...
  • Page 222 Operating Instructions 4-28 Samsung Electronics...
  • Page 223 Operating Instructions Samsung Electronics 4-29...
  • Page 224 Operating Instructions 4-30 Samsung Electronics...
  • Page 225 Operating Instructions Samsung Electronics 4-31...
  • Page 226 Operating Instructions 4-32 Samsung Electronics...

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